Optical lens assembly for imaging, image acquisition unit and electronic device

Abstract

An optical lens assembly for imaging, comprising seven lens elements (E1, E2, E3, E4, E5, E6, and E7), wherein the seven lens elements (E1, E2, E3, E4, E5, E6, and E7) are, in order from an object side to an image side along an optical path, a first lens element (E1), a second lens element (E2), a third lens element (E3), a fourth lens element (E4), a fifth lens element (E5), a sixth lens element (E6), and a seventh lens element (E7), and each of the seven lens elements (E1, E2, E3, E4, E5, E6, and E7) has an object-side surface facing the object side and an image-side surface facing the image side; wherein the first lens element (E1) has a positive refractive power, the object-side surface of the second lens element (E2) is convex in a paraxial region thereof, the fourth lens element (E4) has a positive refractive power, the image-side surface of the fourth lens element (E4) is convex in a paraxial region thereof, the image-side surface of the fifth lens element (E5) is convex in a paraxial region thereof, the image-side surface of the fifth lens element (E5) has at least one inflection point (P); wherein, when an imaged object is located at an infinite object distance, the optical lens assembly is in a first state for imaging; and where a sum of the central thicknesses of all lens elements of the imaging optical lens assembly is ΣCT, a central thickness of the first lens element (E1) is CT1, a sum of axial distances between each of all adjacent lens elements of the imaging optical lens assembly is ΣAT, an axial distance between the first lens element (E1) and the second lens element (E2) is T12, an axial distance between the object-side surface of the second lens element (E2) and an image surface (IMG) is Dr3i, an axial distance between the image-side surface of the seventh lens element (E7) and the image surface (IMG) is BL, a focal length of the imaging optical lens assembly in the first state is fL, a composite focal length of the second lens element (E2), the third lens element (E3), and the fourth lens element (E4) is f234, and the following conditions are met: 0.40 < ∑ CT / ∑ AT<1 .58; 1,10 < Dr 3 i / BL<3 ,50; 0,50 < fL / f234 < 2,60 ; und 0,05 < T 12 < CT 1 < 6,00.

Description

BACKGROUNDField of expertise

[0001] The present disclosure relates to an optical lens assembly for imaging, an image capture unit, and an electronic device, particularly to an optical lens assembly for imaging and an image capture unit that can be used in an electronic device. Description of related technology

[0002] With the development of semiconductor manufacturing technology, the performance of image sensors has improved and their pixel size has been reduced. Therefore, high image quality is now one of the essential features of an optical system.

[0003] In recent years, the trend in electronic products has been toward slimmer and lighter designs, making it difficult for conventional camera lenses to meet the requirements of high specifications and miniaturization, especially for microlenses with large apertures or telephoto lenses. Conventional telephoto lens technologies are gradually becoming insufficient to meet these requirements (e.g., too long overall length, too small aperture, poor quality, or insufficient compactness). Therefore, different optical features or configurations with optical axis deflection are required to overcome these challenges. Due to the thickness of electronic devices, some optical systems are cut in the lens barrel or lens elements to reduce the length in a single axial direction, which contributes to space savings in the module.Additionally, reflective elements can be used to achieve different light path directions in the optical system, giving the lens more flexibility in terms of space requirements to achieve the telephoto effect of a long focal length.

[0004] With rapid technological advancements, electronic devices equipped with optical systems tend to be multifunctional for various applications, increasing the requirements for the functionality of the optical systems. However, with conventional optical systems, it is difficult to achieve a balance between image quality, sensitivity, aperture size, size, or field of view. Therefore, the present disclosure provides an optical system equipped with a reflective element that achieves high image quality for both long-distance and close-up photography through the design of lens groups. This not only meets market demands but also increases the flexibility of the lens in capturing images. SUMMARY

[0005] According to one aspect of the present disclosure, an optical lens assembly for imaging comprises seven lens elements. The seven lens elements are, in order from an object side to an image side along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, and a seventh lens element. Each of the seven lens elements has an object-side surface facing the object side and an image-side surface facing the image side.

[0006] Preferably, the first lens element has a positive refractive power. Preferably, the object-side surface of the second lens element is convex in a paraxial region thereof. Preferably, the fourth lens element has a positive refractive power. Preferably, the image-side surface of the fourth lens element is convex in a paraxial region thereof. Preferably, the image-side surface of the fifth lens element is convex in a paraxial region thereof. Preferably, the image-side surface of the fifth lens element has at least one inflection point. When an imaged object is located at an infinite object distance, the optical lens assembly is in a first state for imaging.

[0007] When a sum of the central thicknesses of all lens elements of the imaging optical lens assembly is ΣCT, a central thickness of the first lens element is CT1, a sum of axial distances between each of all adjacent lens elements of the imaging optical lens assembly is ΣAT, an axial distance between the first lens element and the second lens element is T12, an axial distance between the object-side surface of the second lens element and an image surface is Dr3i, an axial distance between the image-side surface of the seventh lens element and the image surface BL, a focal length of the imaging optical lens assembly in the first state is fL, and a combined focal length of the second lens element, the third lens element, and the fourth lens element is f234, the following conditions are preferably satisfied: 0.40<∑CT / ∑AT<1.58; 1.10 <Dr3i / BL<3,50; 0.50 <fL / f234<2,30; und 0.05 <T12 / CT1<6,00.

[0008] According to another aspect of the present disclosure, an optical lens assembly for imaging comprises seven lens elements. The seven lens elements are, in order from an object side to an image side along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, and a seventh lens element. Each of the seven lens elements has an object-side surface facing the object side and an image-side surface facing the image side.

[0009] Preferably, the first lens element has a positive refractive power. Preferably, the object-side surface of the first lens element is convex in a paraxial region thereof. Preferably, the fifth lens element has a negative refractive power. Preferably, the object-side surface of the fifth lens element is concave in a paraxial region thereof. Preferably, the image-side surface of the fifth lens element is convex in a paraxial region thereof. Preferably, the image-side surface of the fifth lens element has at least one inflection point.

[0010] When a sum of the central thicknesses of all lens elements of the imaging optical lens assembly is ΣCT, a sum of the axial distances between each of all adjacent lens elements of the imaging optical lens assembly is ΣAT, an axial distance between the object-side surface of the second lens element and an image surface is Dr3i, an axial distance between the image-side surface of the seventh lens element and the image surface is BL, a radius of curvature of the image-side surface of the third lens element is R6, a radius of curvature of the image-side surface of the fourth lens element is R8, a focal length of the first lens element is f1, a focal length of the fourth lens element is f4, and a focal length of the fifth lens element is f5, the following conditions are preferably satisfied: 0.60<∑CT / ∑AT<1.58; 1.10 <Dr3i / BL<3,50; −5.00 <R6 / R8<−0,05; und −2.50<(f4+f5) / f1<1.20.

[0011] According to another aspect of the present disclosure, an image capture unit comprises one of the aforementioned imaging optical lens assemblies and an image sensor, wherein the image sensor is arranged on the image surface of the imaging optical lens assembly.

[0012] According to another aspect of the present disclosure, an electronic device comprises the aforementioned image capture unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The disclosure can be better understood by reading the following detailed description of the embodiments with reference to the accompanying drawings: Fig. 1 is a schematic view of an image acquisition unit in a first state and a second state according to the first embodiment of the present disclosure; Fig.2 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image sensing unit in the first state according to the first embodiment; Fig. 3 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image acquisition unit in the second state according to the first embodiment; Fig. 4 is a schematic view of an image acquisition unit in a first state and a second state according to the second embodiment of the present disclosure; Fig. 5 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit in the first state according to the second embodiment; Fig. 6 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit in the second state according to the second embodiment; Fig.7 is a schematic view of an image acquisition unit in a first state and a second state according to the third embodiment of the present disclosure; Fig. 8 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit in the first state according to the third embodiment; Fig. 9 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit in the second state according to the third embodiment; Fig. 10 is a schematic view of an image acquisition unit in a first state and a second state according to the fourth embodiment of the present disclosure; Fig. 11 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit in the first state according to the fourth embodiment; Fig.12 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit in the second state according to the fourth embodiment; Fig. 13 is a schematic view of an image acquisition unit in a first state and a second state according to the fifth embodiment of the present disclosure; Fig. 14 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit in the first state according to the fifth embodiment; Fig. 15 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit in the second state according to the fifth embodiment; Fig. 16 is a schematic view of an image acquisition unit in a first state and a second state according to the sixth embodiment of the present disclosure; Fig.17 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit in the first state according to the sixth embodiment; Fig. 18 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit in the second state according to the sixth embodiment; Fig. 19 is a schematic view of an image acquisition unit in a first state and a second state according to the seventh embodiment of the present disclosure; Fig. 20 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit in the first state according to the seventh embodiment; Fig. 21 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit in the second state according to the 7th embodiment; Fig.22 is a schematic view of an image acquisition unit in a first state and a second state according to the 8th embodiment of the present disclosure; Fig. 23 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit in the first state according to the 8th embodiment; Fig. 24 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit in the second state according to the 8th embodiment; Fig. 25 is a schematic view of an image acquisition unit in a first state and a second state according to the ninth embodiment of the present disclosure; Fig. 26 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit in the first state according to the ninth embodiment; Fig.27 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit in the second state according to the ninth embodiment; Fig. 28 is a perspective view of an image acquisition unit according to the 10th embodiment of the present disclosure; Fig. 29 is a perspective view of an electronic device according to the 11th embodiment of the present disclosure; Fig. 30 is another perspective view of the electronic device in Fig. 29; Fig. 31 is a block diagram of the electronic device in Fig. 29; Fig. 32 is a schematic view of an electronic device according to the 12th embodiment of the present disclosure; Fig. 33 is another schematic view of the electronic device in Fig. 32; Fig.34 is a perspective view of an electronic device according to the 13th embodiment of the present disclosure; Fig. 35 shows a schematic view of ET6L, ET7L, SAG7R1L, SAG7R2L, Y6R2L and Y7R1L when the image acquisition unit according to the first embodiment of the present disclosure is in the first state; Fig. 36 shows a schematic view of inflection points and critical points on lens surfaces when the image acquisition unit according to the first embodiment of the present disclosure is in the first state; Fig. 37 shows a schematic view of a configuration of reflective elements and the associated light path deflection in the image capture unit in the first state according to the first embodiment; Fig.38 shows a schematic view of another configuration of reflective elements and the associated light path deflection in the image capture unit in the first state according to the first embodiment; Fig. 39 shows a schematic view of one form of aperture stop according to the present disclosure; Fig. 40 shows a schematic view of another form of aperture stop according to the present disclosure; Fig. 41 to Fig. 43 each show a schematic view of a configuration of a reflective element in an optical lens assembly for imaging according to an embodiment of the present disclosure; and Fig. 44 and Fig. 45 each show a schematic view of a configuration of two reflective elements in an optical lens assembly for imaging according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0014] An optical lens assembly for imaging comprises seven lens elements. The seven lens elements are, in order from an object side to an image side along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, and a seventh lens element. Each of the seven lens elements of the optical lens assembly for imaging has an object-side surface and an image-side surface.

[0015] When an imaged object is located at an infinite object distance, the imaging optical lens assembly is in a first state. When an imaged object is located at a finite object distance, the imaging optical lens assembly is in a second state. When an imaged object is moved from an infinite object distance to a finite object distance within 150 mm, some of the seven lens elements in the imaging optical lens assembly are moved along an optical axis for focus adjustment, and the imaging optical lens assembly is transitioned from the first state to the second state. Therefore, this is beneficial for saving module space for the imaging optical lens assembly while enabling both long-distance and close-up photography functions, thereby expanding the application range of the product.Conversely, when an imaged object is moved from a finite object distance within 150 mm to an infinite object distance, some of the seven lens elements in the imaging optical lens assembly are moved along the optical axis for focus adjustment, and the imaging optical lens assembly is transferred from the second state to the first state. The object distance refers to an axial distance from an imaged object to the object-side surface of a lens element closest to the object side in the imaging optical lens assembly (i.e., the object-side surface of the first lens element). Furthermore, the finite object distance may be within 100 mm. Furthermore, the finite object distance may be within 80 mm. When an object distance is greater than 10000 mm, it can be regarded as an infinite object distance shooting condition. See . Fig.1, which shows a schematic view of an image acquisition unit in a first state (infinite object distance) and a second state (finite object distance) according to the first embodiment of the present disclosure, wherein the upper part of Fig. 1 is a schematic view of the optical lens assembly for imaging in the first state and the lower part of Fig. 1 is a schematic view of the optical lens assembly for imaging in the second state.

[0016] According to the present disclosure, the imaging optical lens assembly may further include a reflective element disposed along the optical path between an imaged object and the first lens element. Therefore, it is advantageous to provide different optical path directions for the imaging optical lens assembly, thereby making the spatial configuration more flexible, facilitating miniaturization, and reducing mechanical constraints. Moreover, the imaging optical lens assembly may further include another reflective element disposed along the optical path between the seventh lens element and an image surface. Therefore, it is advantageous to provide different optical paths for the imaging optical lens assembly, thereby saving space and achieving a telephoto effect of a long focal length.

[0017] The first lens element may have a positive refractive power. Therefore, it is advantageous for reducing the size of the imaging optical lens assembly and controlling the shooting angle. The object-side surface of the first lens element may be convex in a paraxial region thereof. Therefore, it is advantageous for improving the light-converging ability of the first lens element, thereby achieving miniaturization of the imaging optical lens assembly.

[0018] The object-side surface of the second lens element may be convex in a paraxial region thereof. Therefore, it is advantageous for adjusting the refractive power of the second lens element to correct spherical aberration.

[0019] The image-side surface of the third lens element may be concave in a paraxial region thereof. Therefore, it is advantageous to adjust the refraction direction of the light rays of the third lens element to compensate for the optical path and correct spherical aberration.

[0020] The fourth lens element may have a positive refractive power. Therefore, it is beneficial for adjusting the light paths of all fields of view to achieve a balance between the total path length and the image quality of the imaging optical lens assembly. The image-side surface of the fourth lens element may be convex in a paraxial region thereof. Therefore, it is beneficial for improving the light-converging ability of the fourth lens element to reduce the total path length of the imaging optical lens assembly.

[0021] The fifth lens element may have a negative refractive power. Therefore, it is advantageous for balancing the refractive power distribution of the imaging optical lens assembly and correcting aberrations to improve image quality. The object-side surface of the fifth lens element may be concave in a paraxial region thereof. Therefore, it is advantageous for working with a movable focus adjustment to receive light in various states incident on the object-side surface of the fifth lens element. The image-side surface of the fifth lens element may be convex in a paraxial region thereof. Therefore, it is advantageous for balancing the backfocal length of the imaging optical lens assembly and correcting aberrations.

[0022] The object-side surface of the fifth lens element may have at least one inflection point. Therefore, it is advantageous for controlling the peripheral light path of the object-side surface of the fifth lens element to correct off-axis aberrations. The image-side surface of the fifth lens element may have at least one inflection point. Therefore, it is advantageous for balancing the peripheral light paths under different shooting conditions to reduce distortion and correct aberrations, thereby improving image quality. See Fig. 36, which shows a schematic view of the inflection points P on the lens surfaces when the image acquisition unit according to the first embodiment of the present disclosure is in the first state. In Fig.36, the object-side surface and the image-side surface of the first lens element E1, the object-side surface of the second lens element E2, the image-side surface of the third lens element E3, the image-side surface of the fourth lens element E4, the object-side surface of the fifth lens element E5 and the object-side surface and the image-side surface of the seventh lens element E7 each have one inflection point P, the object-side surface of the third lens element E3, the image-side surface of the fifth lens element E5 and the object-side surface and the image-side surface of the sixth lens element E6 each have two inflection points P, and the object-side surface of the fourth lens element E4 has three inflection points P. Fig.The first embodiment of the present disclosure shown in Figure 36 is merely exemplary. Each of the lens elements in various embodiments of the present disclosure may have one or more inflection points. Additionally, the number of inflection points is calculated only within the range of the optical maximum effective diameter of each lens element. The optical maximum effective diameter range of each lens element may be defined as the range through which the light ray tracing lines of the optical lens assembly for imaging pass in the first state.

[0023] At least one surface of at least one of the first lens element, the second lens element, the third lens element, the fourth lens element, and the fifth lens element may have at least one critical point in an off-axis region thereof. Therefore, it is beneficial for increasing the variation in the shape of the lens surface to correct off-axis aberrations. Furthermore, at least one surface of at least one of the fifth lens element and the sixth lens element may have at least one critical point in an off-axis region thereof. The at least one surface of a single lens element having at least one critical point in an off-axis region thereof refers to the fact that at least one of the object-side surfaces and the image-side surfaces of a single lens element may have at least one critical point in an off-axis region thereof. See Fig.36, which shows a schematic view of the critical points C on the lens surfaces when the image acquisition unit according to the first embodiment of the present disclosure is in the first state. In Fig. 36, the image-side surface of the first lens element E1, the object-side surface and the image-side surface of the third lens element E3, the object-side surface and the image-side surface of the fourth lens element E4, the object-side surface and the image-side surface of the fifth lens element E5, the object-side surface and the image-side surface of the sixth lens element E6, and the object-side surface and the image-side surface of the seventh lens element E7 each have a critical point C in an off-axis region thereof. Fig.The first embodiment of the present disclosure shown in Figure 36 is merely exemplary. Each of the lens elements in various embodiments of the present disclosure may have one or more critical points in an off-axis region thereof. Additionally, the number of critical points is calculated only within the range of the maximum optical effective diameter of each lens element.

[0024] Each of at least two lens elements in the imaging optical lens assembly may have an Abbe number of less than 30.0. Therefore, it is advantageous for correcting chromatic aberrations across multiple object distances to effectively improve image quality. Furthermore, each of at least two lens elements in the imaging optical lens assembly may have an Abbe number of less than 25.5.

[0025] When the sum of the central thicknesses of all lens elements of the imaging optical lens assembly is ΣCT and the sum of the axial distances between each of all adjacent lens elements of the imaging optical lens assembly is ΣAT, the following condition can be satisfied: 0.40 < ΣCT / ΣAT < 1.58. Therefore, it is favorable for balancing the spatial configuration of the imaging optical lens assembly and maintaining high light gathering quality across multiple object distances. Furthermore, the following condition can also be satisfied: 0.60 < ΣCT / ΣAT < 1.58. Furthermore, the following condition can also be satisfied: 0.50 < ΣCT / ΣAT < 1.45. Furthermore, the following condition can also be satisfied: 0.70 ≤ ZCT / XZAT ≤ 1.31.

[0026] When an axial distance between the object-side surface of the second lens element and the image surface is Dr3i and an axial distance between the image-side surface of the seventh lens element and the image surface BL is satisfied, the following condition can be satisfied: 1.10 < Dr3i / BL < 3.50. Therefore, in order to compensate for the amount of movement of the lens elements and maintain the backfocal length within a limited spatial configuration, it is advantageous to ensure that the optical lens assembly for imaging has a sufficient backfocal length to accommodate other optical elements. In addition, the following condition can also be satisfied: 1.40 < Dr3i / BL < 3.20. In addition, the following condition can also be satisfied: 1.60 < Dr3i / BL < 3.00. In addition, the following condition can also be satisfied: 1.91 ≤ Dr3i / BL ≤ 2.74.

[0027] When a focal length of the imaging optical lens assembly in the first state is fL and a combined focal length of the second lens element, the third lens element, and the fourth lens element is f234, the following condition may be satisfied: 0.50 < fL / f234 < 2.30. Therefore, it is advantageous to adjust the refractive power of the second lens element, the third lens element, and the fourth lens element so as to facilitate the alignment of the optical path and the control of the total path length of the imaging optical lens assembly during the focusing operation. In addition, the following condition may also be satisfied: 0.80 < fL / f234 < 2.00. Furthermore, the following condition may also be satisfied: 1.20 ≤ fL / f234 ≤ 1.84.

[0028] When an axial distance between the first lens element and the second lens element is T12 and a central thickness of the first lens element is CT1, the following condition can be satisfied: 0.05 < T12 / CT1 < 6.00. Therefore, it is advantageous for the distance between the first lens element and the second lens element to be effectively controlled by the central thickness of the first lens element to prevent the total path length of the optical lens assembly for imaging from becoming excessively long and to reduce manufacturing tolerances. In addition, the following condition can also be satisfied: 0.10 < T12 / CT1 < 5.50. In addition, the following condition can also be satisfied: 0.18 ≤ T12 / CT1 ≤ 4.49.

[0029] When the radius of curvature of the image-side surface of the third lens element is R6 and the radius of curvature of the image-side surface of the fourth lens element is R8, the following condition can be satisfied: -5.00 < R6 / R8 < -0.05. Therefore, it is advantageous to effectively control the angles of deflection of light in the third lens element and the fourth lens element to mutually correct central spherical aberration. Furthermore, the following condition can also be satisfied: -3.50 < R6 / R8 < -0.05. Furthermore, the following condition can also be satisfied: -2.00 < R6 / R8 < -0.10. Furthermore, the following condition can also be satisfied: -1.70 ≤ R6 / R8 ≤ -0.24.

[0030] When a focal length of the first lens element is f1, a focal length of the fourth lens element is f4, and a focal length of the fifth lens element is f5, the following condition may be satisfied: -2.50 < (f4 + f5) / f1 < 1.20. Therefore, it is advantageous for adjusting the refractive power distribution of the optical lens assembly for imaging to correct aberrations and reduce sensitivity. In addition, the following condition may also be satisfied: -1.70 < (f4 + f5) / f1 < 0.70. In addition, the following condition may also be satisfied: -1.20 < (f4 + f5) / f1 < 0.60. In addition, the following condition may also be satisfied: -0.73 ≤ (f4 + f5) / f1 ≤ 0.28.

[0031] When the axial distance between the object-side surface of the first lens element and the image surface is TL and the focal length of the imaging optical lens assembly in the first state is fL, the following condition can be satisfied: 0.70 < TL / fL < 1.90. Therefore, it is advantageous for balancing the field of view and the size of the imaging optical lens assembly. Furthermore, the following condition can also be satisfied: 0.80 < TL / fL < 1.70. Furthermore, the following condition can also be satisfied: 0.90 < TL / fL < 1.50.

[0032] When the central thickness of the sixth lens element is CT6 and the central thickness of the seventh lens element is CT7, the following condition can be satisfied: 0.20 < CT6 / CT7 < 1.45. Therefore, it is advantageous to control the ratio of the central thickness of the sixth lens element and the seventh lens element to reduce the size of the optical lens assembly for imaging while considering the manufacturing constraints of the lens elements. Furthermore, the following condition can also be satisfied: 0.25 < CT6 / CT7 < 1.35.

[0033] When the axial distance between the object-side surface of the first lens element and the image surface is TL and a maximum image height of the imaging optical lens assembly (which may be half a diagonal length of an effective photosensitive area of ​​an image sensor) is ImgH, the following condition can be satisfied: 3.60 < TL / ImgH < 4.80. Therefore, this is beneficial for forming a telephoto structure and achieving a balance between the total path length and the image height of the imaging optical lens assembly. In addition, the following condition can also be satisfied: 3.70 < TL / ImgH < 4.70.

[0034] When the radius of curvature of the object-side surface of the second lens element is R3 and the radius of curvature of the image-side surface of the third lens element is R6, the following condition can be satisfied: 0.10 < R6 / R3 < 2.30. Therefore, it is advantageous for the surface shape of the object-side surface of the second lens element to match the surface shape of the image-side surface of the third lens element, thereby correcting aberrations across different fields of view. Furthermore, the following condition can also be satisfied: 0.20 < R6 / R3 < 2.00.

[0035] When the radius of curvature of the object-side surface of the first lens element is R1 and the radius of curvature of the image-side surface of the fifth lens element is R10, the following condition can be satisfied: -1.80 < R10 / R1 < 0.60. Therefore, it is advantageous to equalize the optical path during the focus adjustment process to reduce stray light. Furthermore, the following condition can also be satisfied: -1.60 < R10 / R1 < 0.30. Furthermore, the following condition can also be satisfied: -1.40 < R10 / R1 < -0.01.

[0036] When the axial distance between the fifth lens element and the sixth lens element is T56 and the center thickness of the first lens element is CT1, the following condition can be satisfied: 0.15 < T56 / CT1 < 3.50. Therefore, it is advantageous for the center thickness of the first lens element to limit the distance between the fifth lens element and the sixth lens element, thereby increasing the space utilization of the optical lens assembly for imaging. Furthermore, the following condition can also be satisfied: 0.25 < T56 / CT1 < 3.30.

[0037] When the central thickness of the fifth lens element is CT5, the central thickness of the sixth lens element is CT6, and the focal length of the sixth lens element is f6, the following condition can be satisfied: -0.80 < 10×(CT5+CT6) / f6 < 0.90. Therefore, it is advantageous to utilize the refractive power of the sixth lens element to control the central thickness of the fifth element and the sixth lens element, thereby reducing the size of the optical lens assembly for imaging. Furthermore, the following condition can also be satisfied: -0.65 < 10×(CT5+CT6) / f6 < 0.80.

[0038] When a displacement parallel to the optical axis from an axial vertex of the object-side surface of the seventh lens element to a position of the maximum effective radius of the object-side surface of the seventh lens element while the optical lens assembly for imaging is in the first state is SAG7R1L, and a displacement parallel to the optical axis from an axial vertex of the image-side surface of the seventh lens element to a position of the maximum effective radius of the image-side surface of the seventh lens element while the optical lens assembly for imaging is in the first state is SAG7R2L, the following condition can be satisfied: -0.80 < SAG7R1USAG7R2L < 3.80. Therefore, it is advantageous for controlling the angle of incidence of light entering the image surface and improving the curvature of field.In addition, the following condition may also be met: -0.50 < SAG7R1USAG7R2L < 3.50. See . Fig. 35, which shows a schematic view of SAG7R1L and SAG7R2L while the image acquisition unit according to the first embodiment of the present disclosure is in the first state. When the direction from the axial vertex of a surface to the position of the maximum effective radius of the same surface faces the image side of the imaging optical lens assembly, the value of the shift is positive; when the direction from the axial vertex of the surface to the position of the maximum effective radius of the same surface faces the object side of the imaging optical lens assembly, the value of the shift is negative.

[0039] When a distance parallel to the optical axis between a position of the maximum effective radius of the object-side surface of the sixth lens element and a position of the maximum effective radius of the image-side surface of the sixth lens element when the optical lens assembly for imaging is in the first state is ET6L and the central thickness of the sixth lens element is CT6, the following condition can be satisfied: 0.30 < ET6L / CT6 < 2.70. Therefore, this is favorable for adjusting the peripheral light path to correct distortion. In addition, the following condition can also be satisfied: 0.40 < ET6L / CT6 < 2.50. See Fig. 35, which shows a schematic view of ET6L when the image acquisition unit according to the first embodiment of the present disclosure is in the first state.

[0040] When the axial distance between the third lens element and the fourth lens element is T34, and the axial distance between the fourth lens element and the fifth lens element is T45, the following condition can be satisfied: 0.00 ≤ T34 / T45 < 3.50. Therefore, it is advantageous to adjust the axial distances at the front and rear surfaces of the fourth lens element to compensate for the relative position of the fourth lens element during the focus adjustment process and improve the assembly yield of the imaging optical lens assembly. Furthermore, the following condition can also be satisfied: 0.02 < T34 / T45 < 3.00.

[0041] When the axial distance between the first lens element and the second lens element is T12, a focal length of the imaging optical lens assembly is f, and the axial distance between the image-side surface of the seventh lens element and the image surface is BL, the following condition can be satisfied: 0.00 ≤ T12 / f+T12 / BL < 1.25. Therefore, it is advantageous for controlling the total path length while enabling the movable focus function of the imaging optical lens assembly, and advantageous for the spatial arrangement of the mechanism and other components. In addition, the following condition can also be satisfied: 0.02 < T12 / f+T12 / BL < 1.15. The focal length (f) of the imaging optical lens assembly may refer to the focal length of the imaging optical lens assembly in different focusing states.For example, the focal length (f) of the imaging optical lens assembly may refer to the focal length (fL) of the imaging optical lens assembly in the first state (infinite object distance) or to the focal length (fS) of the imaging optical lens assembly in the second state (finite object distance).

[0042] When the radius of curvature of the image-side surface of the fourth lens element is R8, the radius of curvature of the image-side surface of the fifth lens element is R10, and the focal length of the optical lens assembly for imaging in the first state is fL, the following condition can be satisfied: 0.20 < (|R8| + |R10|) / fL < 2.00. Therefore, it is advantageous to match the curvature of the image-side surface of the fourth lens element and the image-side surface of the fifth lens element to correct astigmatism. In addition, the following condition can also be satisfied: 0.30 < (|R8| + |R10|) / fL < 1.80.

[0043] When the focal length of the first lens element is f1 and the focal length of the second lens element is f2, the following condition can be satisfied: -2.00 < f1 / f2 < 6.00. Therefore, it is beneficial for controlling the convergence or scattering of light at the front end of the imaging optical lens assembly for aberration correction and improving the light gathering quality across the entire field of view. Furthermore, the following condition can also be satisfied: -1.80 < f1 / f2 < 5.80. Furthermore, the following condition can also be satisfied: -1.50 < f1 / f2 < 5.50.

[0044] When the maximum field of view of the imaging optical lens assembly (FOV) is 15.0 degrees ≤ FOV ≤ 40.0 degrees, the following condition can be met: 15.0 degrees ≤ FOV ≤ 40.0 degrees. Therefore, it is beneficial to ensure that the imaging optical lens assembly has a suitable field of view to meet the product application requirements. In addition, the following condition can also be met: 20.0 degrees ≤ FOV ≤ 40.0 degrees.

[0045] When the focal length of the imaging optical lens assembly in the first state is fL and the focal length of the imaging optical lens assembly in the second state is fS, the following condition can be satisfied: 1.10 < fL / fS < 1.80. Therefore, it is advantageous for the imaging optical lens assembly to have a specific range for both long-distance and close-up shooting, thereby improving its functional usability. Furthermore, the following condition can also be satisfied: 1.20 < fL / fS < 1.70.

[0046] When a sum of the distances parallel to the optical axis between a position of the maximum effective radius of the object-side surface and a position of the maximum effective radius of the image-side surface of each of the lens elements of the imaging optical lens assembly while the imaging optical lens assembly is in the first state is ΣETL and the sum of the central thicknesses of all the lens elements of the imaging optical lens assembly is ΣCT, the following condition can be satisfied: 0.40 < ΣETL / ΣCT < 1.20. Therefore, it is advantageous for controlling the total edge thickness of the imaging optical lens assembly to provide space for accommodating the mechanism and improving manufacturability. In addition, the following condition can also be satisfied: 0.50 < ΣETL / ΣCT < 1.10.

[0047] When a distance parallel to the optical axis between the position of the maximum effective radius of the object-side surface of the seventh lens element and the position of the maximum effective radius of the image-side surface of the seventh lens element while the imaging optical lens assembly is in the first state is ET7L and the central thickness of the seventh lens element is CT7, the following condition can be satisfied: 0.30 < ET7L / CT7 < 2.20. Therefore, it is advantageous for reducing the size at the image-side end of the imaging optical lens assembly and for correcting astigmatism and distortion. In addition, the following condition can also be satisfied: 0.40 < ET7L / CT7 < 2.00. See Fig. 35, which shows a schematic view of ET7L when the image acquisition unit is in the first state according to the first embodiment of the present disclosure.

[0048] When a maximum effective radius of the image-side surface of the sixth lens element is Y6R2L while the optical lens assembly for imaging is in the first state, and a maximum effective radius of the object-side surface of the seventh lens element is Y7R1L while the optical lens assembly for imaging is in the first state, the following condition can be satisfied: 0.70 < Y7R1L / Y6R2L < 1.50. Therefore, it is advantageous for reducing the deflection angle of the peripheral light to prevent total internal reflection and increase the relative illumination of the peripheral field of view. In addition, the following condition can also be satisfied: 0.80 < Y7R1L / Y6R2L < 1.40. See Fig. 35, which shows a schematic view of Y6R2L and Y7R1L while the image acquisition unit is in the first state according to the first embodiment of the present disclosure.

[0049] According to the present disclosure, the optical lens assembly for imaging may further include an aperture stop. Therefore, it is advantageous to ensure that the optical lens assembly for imaging has a suitable entrance pupil and the field of view is controlled to achieve a telephotography effect. Furthermore, the aperture stop may have a major axis direction and a minor axis direction that are perpendicular to the optical axis and different from each other, and an effective radius of the aperture stop in the major axis direction is different from an effective radius of the aperture stop in the minor axis direction. Therefore, it is advantageous to adjust the shape of the aperture stop to reduce stray light. See, for example, Fig. 39 and Fig. 40, which show schematic views of non-circular aperture stops according to the present disclosure, wherein Fig.39 shows a schematic view of one form of aperture stop according to the present disclosure and Fig. 40 shows a schematic view of another form of aperture stop according to the present disclosure. As in Fig. 39, in some configurations of the present disclosure, a shape of an aperture stop ST is elliptical, and the aperture stop ST has a major axis direction LX and a minor axis direction SY perpendicular to an optical axis OA. The major axis direction LX and the minor axis direction SY are two different directions, and an effective radius Ra of the aperture stop ST in the major axis direction LX is larger than an effective radius Rb of the aperture stop ST in the minor axis direction SY. As shown in Fig.40, in some configurations of the present disclosure, an aperture stop ST is configured to have cut edges on an outer periphery thereof, and the aperture stop ST has a major axis direction LX and a minor axis direction SY perpendicular to an optical axis OA. The major axis direction LX and the minor axis direction SY are two different directions, and an effective radius Ra of the aperture stop ST in the major axis direction LX is larger than an effective radius Rb of the aperture stop ST in the minor axis direction SY.

[0050] According to the present disclosure, the above features and conditions can be used in numerous combinations to achieve corresponding effects.

[0051] According to the present disclosure, the lens elements of the imaging optical lens assembly can be made of either glass or plastic material. When the lens elements are made of glass material, the refractive power distribution of the imaging optical lens assembly can be more flexible, and the influence on imaging caused by a change in ambient temperature can be reduced. The glass lens element can be manufactured either by grinding or molding. When the lens elements are made of plastic material, the manufacturing cost can be effectively reduced. Furthermore, surfaces of each of the lens elements can be arranged to be spherical or aspherical. Spherical lens elements are easy to manufacture.The design of aspherical lens elements allows for more control variables to eliminate aberrations and reduce the required number of lens elements, effectively shortening the overall path length of the optical lens assembly for imaging. Additionally, the aspherical surfaces can be formed by plastic injection molding or glass molding.

[0052] According to the present disclosure, when a lens surface is aspherical, it means that the lens surface has an aspherical shape in its entire optically effective area or one or more portions thereof.

[0053] According to the present disclosure, one or more of the lens elements may optionally contain an additive that creates light absorption and interference effects and modifies the transmittance of the lens elements in a specific wavelength range to reduce unwanted stray light or color variations. For example, the additive may optionally filter out light in the wavelength range of 600 nm to 800 nm to reduce excessive red light and / or near-infrared light, or optionally filter out light in the wavelength range of 350 nm to 450 nm to prevent excessive blue light and / or near-ultraviolet light from interfering with the final image. The additive may be homogeneously blended with a plastic material used to manufacture a blended-material lens element by injection molding. Furthermore, the additive may be applied to the lens surfaces to achieve the aforementioned effects.

[0054] According to the present disclosure, each of an object-side surface and an image-side surface has a paraxial region and an off-axis region. The paraxial region refers to the region of the surface where light rays travel close to the optical axis, and the off-axis region refers to the region of the surface far from the paraxial region. Specifically, unless otherwise specified, when the lens element has a convex surface, it means that the surface is convex in the paraxial region thereof; when the lens element has a concave surface, it means that the surface is concave in the paraxial region thereof.Furthermore, if a portion of the refractive power, radius of curvature, or focal point of a lens element is not defined, it means that the portion of the refractive power, radius of curvature, or focal point of the lens element is located in the paraxial region thereof.

[0055] According to the present disclosure, an inflection point is a point on the surface of the lens element where the surface changes from concave to convex, or vice versa. A critical point is an off-axis point on the lens surface where its tangent is perpendicular to the optical axis.

[0056] According to the present disclosure, the image surface of the imaging optical lens assembly may be flat or curved based on the corresponding image sensor, in particular, a curved surface that is concave and faces the object side of the imaging optical lens assembly.

[0057] According to the present disclosure, an image correction unit, such as a field flattener, can optionally be arranged between the lens element located along the optical path closest to the image side of the imaging optical lens assembly and the image surface to correct aberrations such as field curvature. The optical properties of the image correction unit, such as curvature, thickness, refractive index, position, and surface shape (convex or concave surface with spherical, aspherical, diffractive, or Fresnel types), can be adjusted according to the design of the image acquisition unit. In general, a preferred image correction unit is, for example, a thin transparent element having a concave object-side surface and a planar image-side surface, with the thin transparent element arranged near the image surface.

[0058] According to the present disclosure, at least one reflective element, such as a prism or a reflective mirror, may optionally be provided, although the present disclosure is not limited thereto. Therefore, the imaging optical lens assembly can be arranged more spatially flexibly. The surface of the prism or the reflective mirror can be planar, spherical, aspherical, or a freeform shape, so that the imaging optical lens assembly can be arranged more spatially flexibly. Moreover, if the surface of the prism is, for example, spherical, aspherical, or a freeform shape, the prism can also have a refractive power, thereby enabling it to converge or disperse light. The reflective element can be arranged between an imaged object and the image surface to reduce the size of the imaging optical lens assembly.The optical path can be deflected once, twice, three times, or more by a single reflective element. Furthermore, the reflective element may have at least one reflective surface, and the angle between the optical axis and a normal direction of the reflective surface is not limited to 45 degrees but may be other angles depending on the spatial arrangement. The optical path along an optical axis on the object side may be deflected by the reflective element to an optical axis on the image side. The angle between a vector of the optical axis on the object side and that on the image side may be any angle, not limited to 0, 90, or 180 degrees.Additionally, to reduce the size of the optical lens assembly for imaging, the length and width of the reflecting mirror may be different from each other, and the length, width, and height of the prism may be different from each other. The surface of the reflecting element (e.g., the surface of the prism or the reflecting mirror) may be planar, spherical, aspherical, or a freeform shape according to the optical design requirements, but the present disclosure is not limited thereto. The reflecting element may consist of more than one prism depending on the design requirements. The prism may be made of glass material or plastic material depending on the design requirements.In addition, the prism with the optical path deflection function and the light condensing or diffusing function is not one of the lens elements; that is, the prism with the optical path deflection function and the light condensing or diffusing function is not included in the seven lens elements of the imaging optical lens assembly.

[0059] Further see Fig. 41 to Fig. 43, each showing a schematic view of a configuration of a reflective element in an optical lens assembly for imaging according to an embodiment of the present disclosure. As in Fig. 41 to Fig. 43, the optical lens assembly for imaging may include, in order from an imaged object (not shown in the figures) to an image surface IMG along a propagation direction of an optical path, a reflecting element LF, a lens group LG, a filter FT, and the image surface IMG.

[0060] In Fig. 41, the reflecting element LF is a prism and has, in series along a propagation direction of the light on the beam path, a first light-transmitting surface LP1, a reflecting surface RF1, and a second light-transmitting surface LP2. The beam path enters the reflecting element LF through the first light-transmitting surface LP1 and reaches the reflecting surface RF1 along a first optical axis OA1. The reflecting surface RF1 deflects the beam path from the first optical axis OA1 to a second optical axis OA2, and the beam path then passes the second light-transmitting surface LP2, passes through the lens group LG and the filter FT, and finally reaches the image surface IMG along the second optical axis OA2. As shown in Fig.41, both the first light-transmitting surface LP1 and the second light-transmitting surface LP2 of the reflective element LF may be planar.

[0061] In Fig. 42, the reflective element LF is a flat reflecting mirror with a reflecting surface RF1. The beam path reaches the reflecting surface RF1 along a first optical axis OA1. The reflecting surface RF1 deflects the beam path from the first optical axis OA1 to a second optical axis OA2. The beam path then passes through the lens group LG and the filter FT and finally reaches the image surface IMG along the second optical axis OA2.

[0062] In Fig.43, the reflective element LF is a prism and has, in series along a propagation direction of the light on the beam path, a first light-transmitting surface LP1, a reflective surface RF1, and a second light-transmitting surface LP2. The beam path enters the reflective element LF through the first light-transmitting surface LP1 and reaches the reflective surface RF1 along a first optical axis OA1. The reflective surface RF1 deflects the beam path from the first optical axis OA1 to a second optical axis OA2, whereupon the beam path passes through the second light-transmitting surface LP2, passes through the lens group LG and the filter FT, and finally strikes the image surface IMG along the second optical axis OA2. As shown in Fig.43, both the first light-transmitting surface LP1 and the second light-transmitting surface LP2 of the reflective element LF may be curved.

[0063] See also Fig. 44 and Fig. 45, each showing a schematic view of a configuration of two reflective elements in an optical lens assembly for imaging according to an embodiment of the present disclosure. As in Fig. 44 and Fig.45, the optical lens assembly for imaging may include, in order from an imaged object (not shown in the figures) to an image surface IMG along a propagation direction of a light path, a first reflective element LF1, a lens group LG, a filter FT, a second reflective element LF2, and the image surface IMG. The light path enters the first reflective element LF1 and reaches the first reflective surface RF1 along a first optical axis OA1, and the first reflective surface RF1 deflects the light path from the first optical axis OA1 to a second optical axis OA2. The light path passes through the lens group LG and the filter FT along the second optical axis OA2.The beam then enters the second reflective element LF2 and reaches the second reflective surface RF2 along the second optical axis OA2. The second reflective surface RF2 deflects the beam from the second optical axis OA2 to a third optical axis OA3. The beam finally reaches the image surface IMG along the third optical axis OA3. Fig. 44, each of the first reflecting element LF1 and the second reflecting element LF2 may be a prism. In Fig. 45, the first reflecting element LF1 and the second reflecting element LF2 may be a prism and a flat reflecting mirror, respectively.

[0064] The imaging optical lens assembly may optionally be provided with three or more reflective elements, and the present disclosure is not limited to the type, number, and position of the reflective elements of the embodiments disclosed in the above-mentioned figures.

[0065] According to the present disclosure, the optical lens assembly for imaging may include at least one diaphragm, such as an aperture diaphragm, a diaphragm stop, or a field diaphragm stop. The diaphragm stop or the field diaphragm stop is configured to eliminate stray light and thereby improve the image quality thereof.

[0066] According to the present disclosure, an aperture stop can be configured as a front stop or a center stop. A front stop disposed between an imaged object and the first lens element can provide a larger distance between an exit pupil of the imaging optical lens assembly and the image surface to create a telecentric effect, thereby improving the image sensing efficiency of an image sensor (e.g., CCD or CMOS). A center stop disposed between the first lens element and the image surface is advantageous for increasing the viewing angle of the imaging optical lens assembly, thereby providing a wider field of view for the same.

[0067] According to the present disclosure, the optical lens assembly for imaging may include an aperture control unit. The aperture control unit may be a mechanical component or a light modulator that can control the size and shape of the aperture through electricity or electrical signals. The mechanical component may include a movable element, such as a diaphragm assembly or a light-shielding film. The light modulator may include a shielding element, such as a filter, an electrochromic material, or a liquid crystal layer. The aperture control unit controls the amount of incident light or the exposure time to enhance the ability to adjust image quality. Furthermore, the aperture control unit may be the aperture stop of the present disclosure, which changes the f-number to achieve various imaging effects, such as depth of field or lens sensitivity.

[0068] According to the present disclosure, the imaging optical lens assembly may further include one or more optical elements for limiting the shape of the light passing through the imaging optical lens assembly. Each optical element may be, for example, but not limited to, a filter, a polarizer, etc., and each optical element may be, for example, but not limited to, a single-piece element, a composite component, a thin film, etc. The optical element may be disposed on the object side or the image side of the imaging optical lens assembly, or between two adjacent lens elements, to transmit light in a specific shape and thereby meet application requirements.

[0069] According to the present disclosure, the optical lens assembly for imaging may include at least one optical lens element, an optical element, or a substrate having at least one surface with an anti-reflection layer. The anti-reflection layer can effectively reduce stray light resulting from light reflection at the interface. The anti-reflection layer may be disposed in an optically ineffective region of an object-side surface or an image-side surface of the optical lens element, or a connecting surface between the object-side surface and the image-side surface. The optical element may be a light-blocking element, an annular spacer, a tube element, a cover glass, a blue glass, a filter, a color filter, a light path-deflecting element (e.g., a reflective element), a prism, a mirror, etc.The carrier may be a base for holding a lens assembly, a microlens disposed on an image sensor, a substrate surrounding the image sensor, a glass plate for protecting the image sensor, etc.

[0070] According to the present disclosure, the object side and the image side are defined according to the direction of the optical axis, and the axial optical data is calculated along the optical axis. Furthermore, when the optical axis is deflected by a reflective element, the axial optical data is also calculated along the deflected optical axis.

[0071] In accordance with the above description of the present disclosure, the following specific embodiments are provided for further explanation. 1. Embodiment

[0072] Fig.1 is a schematic view of an image acquisition unit in a first state and a second state according to the first embodiment of the present disclosure. Fig. 2 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit in the first state according to the 1st embodiment. Fig. 3 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit in the second state according to the first embodiment. Furthermore, the upper part of Fig. 1 the schematic view of the optical lens assembly for imaging in the first state, and the lower part of Fig. Figure 1 shows the schematic view of the optical lens assembly for imaging in the second state. Fig.1, the image acquisition unit 1 includes the imaging optical lens assembly (the reference numeral of which is omitted) of the present disclosure and an image sensor IS. The imaging optical lens assembly includes, in order from an object side to an image side along an optical path, a first reflective element E8, a stop S1, a first lens element E1, a stop S2, a second lens element E2, a third lens element E3, a fourth lens element E4, a stop S3, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, a second reflective element E9, a filter E10, and an image surface IMG. Further, the imaging optical lens assembly has a movable group Gm, and the movable group Gm includes the stop S2, the second lens element E2, the third lens element E3, and the fourth lens element E4.The imaging optical lens assembly includes seven lens elements (E1, E2, E3, E4, E5, E6, and E7), with no additional lens element disposed between each of the adjacent seven lens elements. Additionally, no additional lens element is disposed along an optical axis between the first lens element E1 and the first reflective element E8, and no additional lens element is disposed along the optical axis between the seventh lens element E7 and the second reflective element E9.

[0073] When an imaged object is placed at an infinite object distance, the optical lens assembly for imaging is in the first state as shown in the upper part of Fig. 1. When an imaged object is located at a finite object distance, the optical lens assembly for imaging is in the second state, as shown in the lower part of Fig.1. When an imaged object is moved from an infinite object distance to a finite object distance, the movable group Gm is moved along the optical axis for focus adjustment, and the imaging optical lens assembly is transferred from the first state to the second state. Conversely, when an imaged object is moved from a finite object distance to an infinite object distance, the movable group Gm is moved along the optical axis for focus adjustment, and the imaging optical lens assembly is transferred from the second state to the first state. Specifically, the movable group Gm is moved along the optical axis toward the object side during the focus adjustment process when the imaging optical lens assembly is transferred from the first state to the second state. It should be noted that all elements (e.g.,the diaphragm, the lens element and / or the aperture stop) in the movable group Gm are immobile relative to each other during the focus adjustment process.

[0074] The first reflective element E8 is made of glass and is arranged along the optical path between an imaged object and the first lens element E1. It does not affect the focal length of the optical lens assembly for imaging. The first reflective element E8 is a prism with a light path deflection function.

[0075] The first lens element E1 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The first lens element E1 is made of glass material and has both the object-side surface and the image-side surface aspherical. The object-side surface of the first lens element E1 has an inflection point. The image-side surface of the first lens element E1 has an inflection point. The image-side surface of the first lens element E1 has a critical point in an off-axis region thereof.

[0076] The second lens element E2 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The second lens element E2 is made of plastic material and has both the object-side and image-side surfaces aspherical. The object-side surface of the second lens element E2 has an inflection point.

[0077] The third lens element E3 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The third lens element E3 is made of plastic and has the object-side surface and the image-side surface both aspherical. The object-side surface of the third lens element E3 has two inflection points. The image-side surface of the third lens element E3 has one inflection point. The object-side surface of the third lens element E3 has a critical point in an off-axis region thereof. The image-side surface of the third lens element E3 has a critical point in an off-axis region thereof.

[0078] The fourth lens element E4 with positive refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has the object-side surface and the image-side surface both aspherical. The object-side surface of the fourth lens element E4 has three inflection points. The image-side surface of the fourth lens element E4 has one inflection point. The object-side surface of the fourth lens element E4 has a critical point in an off-axis region thereof. The image-side surface of the fourth lens element E4 has a critical point in an off-axis region thereof.

[0079] The fifth lens element E5 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The fifth lens element E5 is made of plastic material and has the object-side surface and the image-side surface both aspherical. The object-side surface of the fifth lens element E5 has one inflection point. The image-side surface of the fifth lens element E5 has two inflection points. The object-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof. The image-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof.

[0080] The sixth lens element E6 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has the object-side surface and the image-side surface both aspherical. The object-side surface of the sixth lens element E6 has two inflection points. The image surface of the sixth lens element E6 has two inflection points. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof. The image surface of the sixth lens element E6 has a critical point in an off-axis region thereof.

[0081] The seventh lens element E7 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The seventh lens element E7 is made of plastic material and has the object-side surface and the image-side surface both aspherical. The object-side surface of the seventh lens element E7 has an inflection point. The image-side surface of the seventh lens element E7 has an inflection point. The object-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof. The image-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof.

[0082] The second reflective element E9 is made of glass material and is arranged along the optical path between the seventh lens element E7 and the image surface IMG. It does not affect the focal length of the optical lens assembly for imaging. The second reflective element E9 is a prism with a beam path deflection function. To simplify the illustration, Fig. 1, the deflection effect on the beam path caused by the first reflective element E8 and the second reflective element E9 is not shown. However, the first reflective element E8 and the second reflective element E9 can have different configurations depending on the actual design requirements, thereby producing different deflection effects on the beam path. See, for example, Fig. 37 and Fig.38, each showing a schematic view of a configuration of reflective elements and the associated beam path deflection in the image capture unit in the first state according to the first embodiment.

[0083] In Fig. 37 and Fig.38, the beam path enters the first reflective element E8 and reaches the first reflective surface RF1 along a first optical axis OA1, and the first reflective surface RF1 deflects the beam path from the first optical axis OA1 to a second optical axis OA2. The beam path passes through the diaphragm S1, the first lens element E1, the diaphragm S2, the second lens element E2, the third lens element E3, the fourth lens element E4, the diaphragm S3, the fifth lens element E5, the sixth lens element E6, and the seventh lens element E7 along the second optical axis OA2. The beam path then enters the second reflective element E9 and reaches the second reflective surface RF2 along the second optical axis OA2, and the second reflective surface RF2 deflects the beam path from the second optical axis OA2 to a third optical axis OA3.The beam path passes through filter E10 and finally reaches the image surface IMG along the third optical axis OA3. Furthermore, the first reflecting element E8 deflects the beam path once, and the second reflecting element E9 also deflects the beam path once.

[0084] In the configuration according to Fig.37, a normal direction of the first reflecting surface RF1 may be at an angle of 45.0 degrees to both the first optical axis OA1 and the second optical axis OA2, a normal direction of the second reflecting surface RF2 may be at an angle of 45.0 degrees to both the second optical axis OA2 and the third optical axis OA3, and an angle between an optical axis vector on the object side (e.g., the first optical axis OA1) and an optical axis vector on the image side (e.g., the third optical axis OA3) may be 180 degrees. That is, the optical axis vector on the object side and the optical axis vector on the image side may point in opposite directions.

[0085] In the configuration according to Fig.38, a normal direction of the first reflecting surface RF1 may be at an angle of 45.0 degrees to both the first optical axis OA1 and the second optical axis OA2, a normal direction of the second reflecting surface RF2 may be at an angle of 45.0 degrees to both the second optical axis OA2 and the third optical axis OA3, and an angle between an optical axis vector on the object side (e.g., the first optical axis OA1) and an optical axis vector on the image side (e.g., the third optical axis OA3) may be 0 degrees. That is, the optical axis vector on the object side and the optical axis vector on the image side may be in the same direction.

[0086] The filter E10 is made of glass and is located between the second reflective element E9 and the image surface IMG. It does not affect the focal length of the imaging optical lens assembly. The image sensor IS is located on or near the image surface IMG of the imaging optical lens assembly.

[0087] The equation of the aspherical surface profiles of the aforementioned lens elements of the first embodiment is expressed as follows: X(Y)=(Y2 / R) / (1+sqrt(1−(1+k)×(Y / R)2))+∑i(Ai)×(Yi) , where X is the displacement parallel to an optical axis from an axial vertex on the aspherical surface to a point at a distance Y from the optical axis on the aspherical surface; Y is the vertical distance from the point on the aspherical surface to the optical axis; R is the radius of curvature; k is the conical coefficient; and Ai is the i-th aspherical coefficient, where i can be, but is not limited to, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28 and 30 in embodiments.

[0088] When a focal length of the optical lens assembly for imaging in the first state is fL, an f-number of the optical lens assembly for imaging in the first state is FnoL, and half of a maximum field of view of the optical lens assembly for imaging in the first state is HFOVL, these parameters have the following values: fL = 16.67 millimeters (mm), FnoL = 1.80, and HFOVL = 17.2 degrees.

[0089] When a focal length of the optical lens assembly for imaging in the second state is fS, an F-number of the optical lens assembly for imaging in the second state is FnoS, and half of a maximum field of view of the optical lens assembly for imaging in the second state is HFOVS, these parameters have the following values: fS = 12.40 mm, FnoS = 2.22, and HFOVS = 15.2 degrees.

[0090] An axial distance between an imaged object and the object-side surface of a lens element closest to the object side in the imaging optical lens assembly (ie, the object-side surface of the first lens element E1) is called an object distance, and an axial distance between the imaged object and the first reflective element E8 is D0. In this embodiment, an axial distance between the image-side surface of the first lens element E1 and the stop S2 is D1, and an axial distance between the image-side surface of the fourth lens element E4 and the stop S3 is D2. The values ​​of the object distances D0, D1, and D2 may change depending on whether the imaging optical lens assembly is in the first state or the second state for focus adjustment.While the optical lens assembly for imaging is in the first state, the following conditions are met: object distance = ∞ (infinity); D0 = ∞ (infinity); D1 = 4.449 mm; and D2 = 0.752 mm. While the optical lens assembly for imaging is in the second state, the following conditions are met: object distance = 68.680 mm; D0 = 60.00 mm; D1 = 2.365 mm; and D1 = 2.836 mm.

[0091] When the maximum field of view of the imaging optical lens assembly in the first state is FOVL, the following condition is satisfied: FOVL = 34.4 degrees.

[0092] When the maximum field of view of the optical lens assembly for imaging in the second state is FOVS, the following condition is satisfied: FOVS = 30.4 degrees.

[0093] It is noted that the values ​​of Dr3i, f, T12 and T45 may change in some of the following conditions depending on whether the imaging optical lens assembly for focus adjustment is in the first state or the second state.

[0094] An axial distance between the object-side surface of the second lens element E2 and the image surface IMG is Dr3i, and an axial distance between the image-side surface of the seventh lens element E7 and the image surface IMG is BL. When the optical lens assembly for imaging is in the first state, the following condition is satisfied: Dr3i / BL = 2.22. When the optical lens assembly for imaging is in the second state, the following condition is satisfied: Dr3i / BL = 2.50.

[0095] An axial distance between the first lens element E1 and the second lens element E2 is T12, a focal length of the imaging optical lens assembly is f, and the axial distance between the image-side surface of the seventh lens element E7 and the image surface IMG is BL. When the imaging optical lens assembly is in the first state, the following condition is satisfied: T12 / f+T12 / BL = 0.66. When the imaging optical lens assembly is in the second state, the following condition is satisfied: T12 / f+T12 / BL = 0.28. In this embodiment, an axial distance between two adjacent lens elements is a distance in a paraxial region between two adjacent lens surfaces of the two adjacent lens elements.

[0096] The axial distance between the first lens element E1 and the second lens element E2 is T12, and a central thickness of the first lens element E1 is CT1. When the optical lens assembly for imaging is in the first state, the following condition is satisfied: T12 / CT1 = 2.76. When the optical lens assembly for imaging is in the second state, the following condition is satisfied: T12 / CT1 = 1.07.

[0097] When an axial distance between the fifth lens element E5 and the sixth lens element E6 is T56 and the central thickness of the first lens element E1 is CT1, the following condition is satisfied: T56 / CT1 = 0.72.

[0098] An axial distance between the third lens element E3 and the fourth lens element E4 is T34, and an axial distance between the fourth lens element E4 and the fifth lens element E5 is T45. When the optical lens assembly for imaging is in the first state, the following condition is satisfied: T34 / T45 = 1.90. When the optical lens assembly for imaging is in the second state, the following condition is satisfied: T34 / T45 = 0.53.

[0099] When the focal length of the optical lens assembly for imaging in the first state is fL and the focal length of the optical lens assembly for imaging in the second state is fS, the following condition is satisfied: fL / fS = 1.34.

[0100] When an axial distance between the object-side surface of the first lens element E1 and the image surface IMG is TL and the focal length of the optical lens assembly for imaging in the first state is fL, the following condition is satisfied: TL / fL = 1.27.

[0101] When the axial distance between the object-side surface of the first lens element E1 and the image surface IMG is TL and a maximum image height of the optical lens assembly for imaging is ImgH, the following condition is satisfied: TL / ImgH = 4.05.

[0102] When the focal length of the optical lens assembly for imaging in the first state is fL and a composite focal length of the second lens element E2, the third lens element E3 and the fourth lens element E4 is f234, the following condition is satisfied: fL / f234 = 1.23.

[0103] When a focal length of the first lens element E1 is f1 and a focal length of the second lens element E2 is f2, the following condition is satisfied: f1 / f2 = 2.83.

[0104] When a focal length of the first lens element E1 is f1, a focal length of the fourth lens element E4 is f4, and a focal length of the fifth lens element E5 is f5, the following condition is satisfied: (f4+f5) / f1 = -0.26.

[0105] When a radius of curvature of the image-side surface of the fourth lens element E4 is R8, a radius of curvature of the image-side surface of the fifth lens element E5 is R10, and the focal length of the optical lens assembly for imaging in the first state is fL, the following condition is satisfied: (|R8|+|R10|) / fL = 0.86.

[0106] When a radius of curvature of the object-side surface of the first lens element E1 is R1 and the radius of curvature of the image-side surface of the fifth lens element E5 is R10, the following condition is satisfied: R10 / R1 = -0.35.

[0107] When a radius of curvature of the object-side surface of the second lens element E2 is R3 and a radius of curvature of the image-side surface of the third lens element E3 is R6, the following condition is satisfied: R6 / R3 = 0.73.

[0108] When a radius of curvature of the image-side surface of the third lens element E3 is R6 and the radius of curvature of the image-side surface of the fourth lens element E4 is R8, the following condition is satisfied: R6 / R8 = -0.48.

[0109] When a sum of the central thicknesses of all lens elements of the imaging optical lens assembly is ΣCT and a sum of the axial distances between each of all adjacent lens elements of the imaging optical lens assembly is ΣAT, the following condition is satisfied: ΣCT / ΣAT = 0.87. In these embodiments, ΣCT is the sum of the central thickness of the first lens element E1, a central thickness of the second lens element E2, a central thickness of the third lens element E3, a central thickness of the fourth lens element E4, a central thickness of the fifth lens element E5, a central thickness of the sixth lens element E6, and a central thickness of the seventh lens element E7.Furthermore, in this embodiment, ΣAT is the sum of the axial distance between the first lens element E1 and the second lens element E2, an axial distance between the second lens element E2 and the third lens element E3, the axial distance between the third lens element E3 and the fourth lens element E4, the axial distance between the fourth lens element E4 and the fifth lens element E5, the axial distance between the fifth lens element E5 and the sixth lens element E6, and an axial distance between the sixth lens element E6 and the seventh lens element E7.

[0110] When the central thickness of the fifth lens element E5 is CT5, the central thickness of the sixth lens element E6 is CT6, and a focal length of the sixth lens element E6 is f6, the following condition is satisfied: 10×(CT5+CT6) / f6 = 0.0043.

[0111] If the central thickness of the sixth lens element E6 is CT6 and the central thickness of the seventh lens element E7 is CT7, the following condition is satisfied: CT6 / CT7 = 0.30.

[0112] When a sum of the distances parallel to the optical axis between a position of the maximum effective radius of the object-side surface and a position of the maximum effective radius of the image-side surface of each lens element of the imaging optical lens assembly while the imaging optical lens assembly is in the first state is ΣETL, and the sum of the central thicknesses of all lens elements of the imaging optical lens assembly is ΣCT, the following condition is satisfied: ΣETL / ΣCT = 0.76. In this embodiment, ΣETL is the sum of a distance parallel to the optical axis between a position of the maximum effective radius of the object-side surface of the first lens element E1 and a position of the maximum effective radius of the image-side surface of the first lens element E1 while the imaging optical lens assembly is in the first state.a distance parallel to the optical axis between a position of the maximum effective radius of the object-side surface of the second lens element E2 and a position of the maximum effective radius of the image-side surface of the second lens element E2 while the optical lens assembly for imaging is in the first state, a distance parallel to the optical axis between a position of the maximum effective radius of the object-side surface of the third lens element E3 and a position of the maximum effective radius of the image-side surface of the third lens element E3 while the optical lens assembly for imaging is in the first state, a distance parallel to the optical axis between a position of the maximum effective radius of the object-side surface of the fourth lens element E4 and a position of the maximum effective radius of the image-side surface of the fourth lens element E4,while the optical lens assembly for imaging is in the first state, a distance parallel to the optical axis between a position of the maximum effective radius of the object-side surface of the fifth lens element E5 and a position of the maximum effective radius of the image-side surface of the fifth lens element E5, while the optical lens assembly for imaging is in the first state, a distance parallel to the optical axis between a position of the maximum effective radius of the object-side surface of the sixth lens element E6 and a position of the maximum effective radius of the image-side surface of the sixth lens element E6, while the optical lens assembly for imaging is in the first state,a distance parallel to the optical axis between a position of the maximum effective radius of the object-side surface of the seventh lens element E7 and a position of the maximum effective radius of the image-side surface of the seventh lens element E7 while the optical lens assembly for imaging is in the first state.

[0113] When the distance parallel to the optical axis between the position of the maximum effective radius of the object-side surface of the sixth lens element E6 and the position of the maximum effective radius of the image-side surface of the sixth lens element E6 is ET6L and the central thickness of the sixth lens element E6 is CT6, the following condition is satisfied: ET6L / CT6 = 0.80.

[0114] When the distance parallel to the optical axis between the position of the maximum effective radius of the object-side surface of the seventh lens element E7 and the position of the maximum effective radius of the image-side surface of the seventh lens element E7 is ET7L and the central thickness of the seventh lens element E7 is CT7, the following condition is satisfied: ET7L / CT7 = 1.16.

[0115] When a maximum effective radius of the image-side surface of the sixth lens element E6 is Y6R2L and a maximum effective radius of the object-side surface of the seventh lens element E7 is Y7R1L, the following condition is satisfied: Y7R1L / Y6R2L = 1.07.

[0116] When a displacement parallel to the optical axis from an axial vertex of the object-side surface of the seventh lens element E7 to the position of the maximum effective radius of the object-side surface of the seventh lens element E7 is SAG7R1L, and a displacement parallel to the optical axis from an axial vertex of the image-side surface of the seventh lens element E7 to the position of the maximum effective radius of the image-side surface of the seventh lens element E7 is SAG7R2L, the following condition is satisfied: SAG7R1L / SAG7R2L = 1.59. In this embodiment, the direction of SAG7R1L points toward the object side of the imaging optical lens assembly, and the value of SAG7R1L is negative; the direction of SAG7R2L points toward the object side of the imaging optical lens assembly, and the value of SAG7R2L is negative.

[0117] The detailed optical data of the first embodiment are listed in Table 1A and Table 1B, and the data of the aspherical surfaces are listed in Table 1C below. TABLE 1A 1. Embodiment Surface# radius of curvature thickness material index Abbé # focal length 0 object Plano D0 1 Prism 1 Plano 8,000 Glass 1,847 23,8 - 2 Plano 1,605 3 aperture Plano -0,925 4 Lens 1 11,7655 (ASP) 1,235 Glass 1,569 56,0 31.38 5 33,2057 (ASP) D1 6 aperture Plano -1,043 7 Lens 2 6,7218 (ASP) 2,288 plastic 1,534 56,0 11.10 8 -44,3445 (ASP) 0,337 9 Lens 3 10,1831 (ASP) 0,418 plastic 1,656 21,3 -15.01 10 4,9249 (ASP) 1,521 11 Lens 4 -73,4127 (ASP) 0,511 plastic 1,584 28,2 20.11 12 -10,1551 (ASP) D2 13 aperture Plano 0,046 14 Lens 5 -3,2504 (ASP) 0,400 plastic 1,639 23,5 -28.37 15 -4,1510 (ASP) 0,892 16 Lens 6 28,2879 (ASP) 0,360 plastic 1,656 21,3 1770.10 17 28,8480 (ASP) 0,381 18 Lens 7 76,1980 (ASP) 1,193 plastic 1,529 45,4 -18.00 19 8,4231 (ASP) 0,350 20 Prism 2 Plano 6,600 Glass 1,847 23,8 - 21 Plano 0,200 22 filter Plano 0,210 Glass 1,517 64,2 - 23 Plano 0,100 24 Picture Plano - Note: Reference wavelength is 587.6 nm (d-line). An effective radius of the aperture S1 (surface 3) is 5.080 mm. An effective radius of the aperture S2 (surface 6) is 3.908 mm. An effective radius of the aperture S3 (area 13) is 2.736 mm. The optical lens assembly for imaging may further comprise an aperture stop, wherein the Position of the aperture diaphragm depending on the object distance or depending on the arrangement of the front reflective element (the first reflective element) or the cut edge(s) of the lens element(s).

[0118] Table 1A lists the radius of curvature, thickness, and focal length in millimeters (mm). Surface numbers 0-24 indicate the surfaces arranged sequentially along the optical axis from the object side to the image side. TABLE 1B Values ​​of optical and physical parameters / definitions First state (infinite object distance) Second state (finite object distance) fL [mm] 16,67 fS [mm] 12,40 FnoL 1,80 FnoS 2,22 HFOVL [degree] 17,2 HFOVS [degree] 15,2 Object distance [mm] ∞ Object distance [mm] 68,680 D0 [mm] ∞ D0 [mm] 60,000 D1 [mm] 4,449 D1 [mm] 2,365 D2 [mm] 0,752 D2 [mm] 2,836

[0119] Table 1B shows optical and physical parameters / definitions of the imaging optical lens assembly for the first state and the second state under various focusing conditions. It should be understood that only two movable focus states (i.e., the first state and the second state) are disclosed in this embodiment, but the present disclosure is not limited thereto. In addition to the first state and the second state, the imaging optical lens assembly in this embodiment may also have other movable focus states with different focal lengths between the first state and the second state to accommodate focusing conditions for other object distances.

[0120] In Table 1B, the movable group Gm of the imaging optical lens assembly is moved according to the change in the object distance for focus adjustment. For example, when an imaged object is moved from an infinite object distance to a finite object distance, the movable group Gm for focus adjustment is moved along the optical axis toward the object side, so that the imaging optical lens assembly is transferred from the first state to the second state.Specifically, when the object distance changes from an infinite object distance to a finite object distance of 68.680 mm, the optical lens assembly for imaging is transferred from the first state to the second state, the axial distance D1 between the image-side surface of the first lens element E1 and the diaphragm S2 decreases from 4.449 mm in the first state to 2.365 mm in the second state, and the axial distance D2 between the image-side surface of the fourth lens element E4 and the diaphragm S3 increases from 0.752 mm in the first state to 2.836 mm in the second state. In other words, as the object distance decreases, the movable group Gm is moved toward the object side along the optical axis during the focus adjustment operation. TABLE 1C Aspherical coefficients Surface # 4 5 7 8 k = 0,0000E+00 0,0000E+00 0,0000E+00 0,0000E+00 A4 = -1,13366906E-04 -1,17437233E-04 -1,42360308E-04 -3,43885283E-03 A6 = -1,21350444E-05 -2,10528724E-05 9,37536482E-06 2,14628023E-03 A8 = 3,69636752E-06 7,30399971E-06 1,75942047E-06 -9,76506779E-04 A10 = -1,08569705E-06 -1,90341904E-06 -6,01856897E-06 3,24952267E-04 A12 = 2,20875552E-07 3,33050871E-07 3,30909487E-06 -8,64671378E-05 A14 = -3,21293764E-08 -4,15987384E-08 -1,04700382E-06 1,83175102E-05 A16 = 3,32964310E-09 3,80517550E-09 2,13243351E-07 -3,01699286E-06 A18 = -2,44100067E-10 -2,55978686E-10 -2,92052265E-08 3,78336148E-07 A20 = 1,24921151E-11 1,24926053E-11 2,72159735E-09 -3,54550507E-08 A22 = -4,34929974E-13 -4,28607076E-13 -1,70441811E-10 2,42813414E-09 A24 = 9,79594202E-15 9,76033729E-15 6,86998624E-12 -1,17533142E-10 A26 = -1,28523263E-16 -1,31984313E-16 -1,61111772E-13 3,79953418E-12 A28 = 7,45236477E-19 7,99980994E-19 1,67136949E-15 -7,34847323E-14 A30 = - - - 6,42435966E-16 Surface # 9 10 11 12 k = 0,0000E+00 0,0000E+00 0,0000E+00 0,0000E+00 A4 = -1,66754707E-02 -1,56700725E-02 4,31072705E-04 1,45082785E-03 A6 = 5,36359325E-03 4,14614015E-03 7,45140899E-04 3,85550828E-04 A8 = -1,95051621E-03 -1,47561415E-03 -4,05072221E-04 1,11188311 E-05 A10 = 5,10412788E-04 3,42520542E-04 1,65651066E-04 -7,57203281E-05 A12 = -9,90923095E-05 -5,06051464E-05 -5,86720516E-05 4,32828754E-05 A14 = 1,47530743E-05 3,65349816E-06 1,46404925E-05 -1,51069987E-05 A16 = -1,66796543E-06 2,76640603E-07 -2,46331387E-06 3,50715156E-06 A18 = 1,38713121E-07 -1,15608550E-07 2,76506648E-07 -5,41791580E-07 A20 = -8,12699449E-09 1,61427885E-08 -1,96673824E-08 5,49160501E-08 A22 = 3,15476082E-10 -1,31919451E-09 7,92187288E-10 -3,47769485E-09 A24 = -7,26677660E-12 6,61366612E-11 -1,36238064E-11 1,22791930E-10 A26 = 7,52615392E-14 -1,89287753E-12 - -1,79623354E-12 A28 = - 2,38183632E-14 - - Surface # 14 15 16 17 k = 0,0000E+00 0,0000E+00 0,0000E+00 0,0000E+00 A4 = 6,01413311E-02 5,94503525E-02 1,40301478E-02 6,83249146E-03 A6 = -1,53866870E-02 -1,43373245E-02 -1,52480690E-02 -1,52422024E-02 A8 = 4,36376255E-03 2,69418595E-03 5,00585041E-03 7,31369818E-03 A10 = -1,11658919E-03 3,53322840E-04 9,87036906E-04 -1,28092356E-03 A12 = 2,51325144E-04 -6,54723185E-04 -2,15184751E-03 -7,02964710E-04 A14 = -4,76195356E-05 3,38637425E-04 1,25381318E-03 6,19036961E-04 A16 = 7,28842384E-06 -1,06735096E-04 -4,26178669E-04 -2,40493908E-04 A18 = -8,46869058E-07 2,23429490E-05 9,16565864E-05 5,84106692E-05 A20 = 6,85532481E-08 -3,11660917E-06 -1,18525937E-05 -9,42880828E-06 A22 = -3,38317769E-09 2,78562445E-07 6,46282006E-07 1,00455061E-06 A24 = 7,58291518E-11 -1,44364722E-08 5,07675952E-08 -6,63659783E-08 A26 = - 3,29829168E-10 -1,16298430E-08 2,25535103E-09 A28 = - - 8,07741622E-10 -1,04690684E-11 A30 = - - -2,09271169E-11 -1,08733821E-12 Surface # 18 19 k = 0,0000E+00 0,0000E+00 A4 = -5,83673379E-03 -6,65460657E-03 A6 = -3,41879680E-03 -6,53313166E-04 A8 = 1,52197934E-03 7,33474109E-04 A10 = 2,02720079E-04 -3,33977080E-04 A12 = -4,94191047E-04 9,93529427E-05 A14 = 2,61417812E-04 -2,09061271E-05 A16 = -8,12292336E-05 3,18413292E-06 A18 = 1,68335626E-05 -3,53845344E-07 A20 = -2,40683928E-06 2,86499120E-08 A22 = 2,37535291E-07 -1,67099840E-09 A24 = -1,57900187E-08 6,84458203E-11 A26 = 6,67544872E-10 -1,87399992E-12 A28 = -1,58995986E-11 3,09714246E-14 A30 = 1,56631189E-13 -2,35830931E-16

[0121] In Table 1C, k represents the conic coefficient of the aspherical surface profile equation. A4-A30 represent the aspherical coefficients ranging from the 4th to the 30th order. The tables shown below for each embodiment are the corresponding schematic parameter and aberration curves, and the definitions of the tables are the same as in Table 1A and Table 1C of the first embodiment. Therefore, no further explanation is given in this regard. 2. Embodiment

[0122] Fig. 4 is a schematic view of an image acquisition unit in a first state and a second state according to the second embodiment of the present disclosure. Fig. 5 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit in the first state according to the second embodiment. Fig.Fig. 6 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit in the second state according to the second embodiment. In addition, the upper part of Fig. 4 the schematic view of the optical lens assembly for imaging in the first state and the lower part of Fig. 4 shows the schematic view of the optical lens assembly for imaging in the second state. In Fig.4, the image acquisition unit 2 includes the imaging optical lens assembly (the reference numeral of which is omitted) of the present disclosure and an image sensor IS. The imaging optical lens assembly includes, in order from an object side to an image side along an optical path, a first reflective element E8, a stop S1, a first lens element E1, a second lens element E2, a stop S2, a third lens element E3, a fourth lens element E4, a stop S3, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, a second reflective element E9, a filter E10, and an image surface IMG. Further, the imaging optical lens assembly has a movable group Gm, and the movable group Gm includes the second lens element E2, the stop S2, the third lens element E3, and the fourth lens element E4.The imaging optical lens assembly includes seven lens elements (E1, E2, E3, E4, E5, E6, and E7), with no additional lens element disposed between each of the adjacent seven lens elements. Additionally, no additional lens element is disposed between the first lens element E1 and the first reflective element E8 along an optical axis, and no additional lens element is disposed between the seventh lens element E7 and the second reflective element E9 along the optical axis.

[0123] When an imaged object is placed at an infinite object distance, the optical lens assembly for imaging is in the first state as shown in the upper part of Fig. 4. When an imaged object is at a finite object distance, the optical lens assembly for imaging is in the second state, as shown in the lower part of Fig.4. When an imaged object is moved from an infinite object distance to a finite object distance, the movable group Gm is moved along the optical axis for focus adjustment, and the imaging optical lens assembly is transferred from the first state to the second state. Conversely, when an imaged object is moved from a finite object distance to an infinite object distance, the movable group Gm is moved along the optical axis for focus adjustment, and the imaging optical lens assembly is transferred from the second state to the first state. Specifically, the movable group Gm is moved along the optical axis toward the object side during the focus adjustment process when the imaging optical lens assembly is transferred from the first state to the second state. It should be noted that all elements (e.g.,the diaphragm, the lens element and / or the aperture stop) in the movable group Gm are immobile relative to each other during the focusing process.

[0124] The first reflective element E8 is made of glass and is arranged along the optical path between an imaged object and the first lens element E1. It does not affect the focal length of the optical lens assembly for imaging. The first reflective element E8 is a prism with a light path deflection function.

[0125] The first lens element E1 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The first lens element E1 is made of plastic material and has both the object-side surface and the image-side surface aspherical.

[0126] The second lens element E2 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The second lens element E2 is made of plastic material and has the object-side surface and the image-side surface both aspherical. The object-side surface of the second lens element E2 has an inflection point. The image-side surface of the second lens element E2 has an inflection point. The object-side surface of the second lens element E2 has a critical point in an off-axis region thereof. The image-side surface of the second lens element E2 has a critical point in an off-axis region thereof.

[0127] The third lens element E3 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The third lens element E3 is made of plastic material and has the object-side surface and the image-side surface both aspherical. The object-side surface of the third lens element E3 has an inflection point. The image-side surface of the third lens element E3 has an inflection point. The object-side surface of the third lens element E3 has a critical point in an off-axis region thereof. The image-side surface of the third lens element E3 has a critical point in an off-axis region thereof.

[0128] The fourth lens element E4 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has both the object-side surface and the image-side surface aspherical. The object-side surface of the fourth lens element E4 has two inflection points. The image-side surface of the fourth lens element E4 has one inflection point. The object-side surface of the fourth lens element E4 has a critical point in an off-axis region thereof.

[0129] The fifth lens element E5 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The fifth lens element E5 is made of plastic material and has both the object-side surface and the image-side surface aspherical. The object-side surface of the fifth lens element E5 has two inflection points. The image-side surface of the fifth lens element E5 has one inflection point. The image-side surface of the fifth lens element E5 has one critical point in an off-axis region thereof.

[0130] The sixth lens element E6 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has the object-side surface and the image-side surface both aspherical. The object-side surface of the sixth lens element E6 has two inflection points. The image-side surface of the sixth lens element E6 has two inflection points. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof. The image-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof.

[0131] The seventh lens element E7 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The seventh lens element E7 is made of plastic material and has both the object-side surface and the image-side surface aspherical. The image-side surface of the seventh lens element E7 has an inflection point. The image-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof.

[0132] The second reflective element E9 is made of glass material and is arranged along the optical path between the seventh lens element E7 and the image surface IMG. It does not affect the focal length of the optical lens assembly for imaging. The second reflective element E9 is a prism with a beam path deflection function. To simplify the illustration, Fig. 4, the deflection of the beam path caused by the first reflective element E8 and the second reflective element E9 is not shown. However, the first reflective element E8 and the second reflective element E9 may have different configurations depending on the actual design requirements, thereby achieving different deflection effects on the beam path. In addition, the first reflective element E8 and the second reflective element E9 of this embodiment may each have a configuration corresponding, for example, to one of the configurations shown in Fig. 37 and Fig. 38 shown configurations, which can be accessed with reference to the above descriptions Fig. 37 and Fig. 38, without repeating the details in this regard.

[0133] The filter E10 is made of glass and is located between the second reflective element E9 and the image surface IMG. It does not affect the focal length of the imaging optical lens assembly. The image sensor IS is located on or near the image surface IMG of the imaging optical lens assembly.

[0134] The detailed optical data of the 2nd embodiment are shown in Table 2A and Table 2B, and the data of the aspherical surfaces are shown in Table 2C below. TABLE 2A 2. Embodiment Surface# radius of curvature thickness material index Abbé # focal length 0 object Plano D0 1 Prism 1 Plano 7,800 Glass 1,847 23,8 - 2 Plano 1,555 3 aperture Plano -0,875 4 Lens 1 8,4530 (ASP) 1,911 plastic 1,544 56,0 15,32 5 -541,5340 (ASP) D1 6 Lens 2 9,2982 (ASP) 0,400 plastic 1,697 16,3 -31,86 7 6,4386 (ASP) 0,421 8 aperture Plano -0,190 9 Lens 3 5,2504 (ASP) 1,118 plastic 1,511 56,8 -213,70 10 4,6488 (ASP) 1,149 11 Lens 4 8,3046 (ASP) 1,259 plastic 1,515 56,4 8,05 12 -7,8560 (ASP) D2 13 aperture Plano 0,519 14 Lens 5 -2,7372 (ASP) 0,286 plastic 1,551 44,8 -6,74 15 -10,8022 (ASP) 2,639 16 Lens 6 41,1220 (ASP) 0,339 plastic 1,697 16,3 62,88 17 661,2668 (ASP) 1,025 18 Lens 7 -23,7039 (ASP) 0,447 plastic 1,544 56,0 -34,13 19 86,2718 (ASP) 0,500 20 Prism 2 Plano 6,300 Glass 1,847 23,8 - 21 Plano 0,180 22 filter Plano 0,210 Glass 1,517 64,2 - 23 Plano 0,821 24 Picture Plano - Note: Reference wavelength is 587.6 nm (d-line). An effective radius of the aperture S1 (surface 3) is 4.396 mm. An effective radius of the aperture S2 (surface 8) is 3,330 mm. An effective radius of the aperture S3 (area 13) is 2.557 mm. The optical lens assembly for imaging may further comprise an aperture stop, wherein the Position of the aperture diaphragm depending on the object distance or depending on the arrangement of the front reflective element (the first reflective element) or the cut edge(s) of the lens element(s).

[0135] In this embodiment, an axial distance between the image-side surface of the first lens element E1 and the object-side surface of the second lens element E2 is D1. The values ​​of the object distances D0, D1, and D2 may change depending on whether the optical lens assembly is in the first state for imaging or the second state for focus adjustment (as shown in Table 2B below). Except for the above definition of D1 in this paragraph, the definitions of the parameters shown in Table 2B are the same as those given in the 1st embodiment, with corresponding values ​​for the 2nd embodiment; therefore, no further explanations will be given. TABLE 2B Values ​​of optical and physical parameters / definitions First state (infinite object distance) Second state (finite object distance) fL [mm] 21,38 fS [mm] 13,30 FnoL 2,50 FnoS 3,05 HFOVL [degree] 12,9 HFOVS [degree] 12,4 Object distance [mm] ∞ Object distance [mm] 63,480 D0 [mm] ∞ D0 [mm] 55,000 D1 [mm] 1,957 D1 [mm] 0,344 D2 [mm] 0,369 D2 [mm] 1,982

[0136] It should be understood that only two movable focus states (i.e., the first state and the second state) are disclosed in this embodiment, but the present disclosure is not limited thereto. In addition to the first state and the second state, the imaging optical lens assembly in this embodiment may also have other movable focus states with different focal lengths between the first state and the second state to accommodate focusing conditions for different object distances.

[0137] In Table 2B, the movable group Gm of the imaging optical lens assembly is moved according to the change in the object distance for focus adjustment. For example, when an imaged object is moved from an infinite object distance to a finite object distance, the movable group Gm for focus adjustment is moved along the optical axis toward the object side, so that the imaging optical lens assembly is transferred from the first state to the second state.Specifically, when the object distance changes from infinity to a finite object distance of 63.480 mm, the imaging optical lens assembly is transitioned from the first state to the second state, the axial distance D1 between the image-side surface of the first lens element E1 and the object-side surface of the second lens element E2 decreases from 1.957 mm in the first state to 0.344 mm in the second state, and the axial distance D2 between the image-side surface of the fourth lens element E4 and the diaphragm S3 increases from 0.369 mm in the first state to 1.982 mm in the second state. In other words, as the object distance decreases, the movable group Gm is moved along the optical axis toward the object side during the focus adjustment operation. TABLE 2C Aspherical coefficients Surface # 4 5 6 7 k = 0,0000E+00 0,0000E+00 0,0000E+00 0,0000E+00 A4 = -2,25140773E-05 -1,91812768E-04 2,56759561E-03 6,95917515E-03 A6 = 5,66723526E-08 -1,75447562E-06 -3,35535837E-03 -8,21027599E-03 A8 = -5,63926030E-08 3,22181738E-07 1,52495279E-03 4,47828187E-03 A10 = 4,27368375E-09 -9,44715456E-09 -5,93159489E-04 -1,82885846E-03 A12 = - 1,48742105E-10 1,78924145E-04 5,44053209E-04 A14 = - - -4,36291056E-05 -1,22549703E-04 A16 = - - 8,87725534E-06 2,19229078E-05 A18 = - - -1,47992110E-06 -3,20215915E-06 A20 = - - 1,92961227E-07 3,79105522E-07 A22 = - - -1,87356513E-08 -3,50028404E-08 A24 = - - 1,29006117E-09 2,38020350E-09 A26 = - - -5,91189553E-11 -1,10495194E-10 A28 = - - 1,61145504E-12 3,09859047E-12 A30 = - - -1,97300936E-14 -3,93731249E-14 Surface # 9 10 11 12 k = 0,0000E+00 0,0000E+00 0,0000E+00 0,0000E+00 A4 = -1,36328257E-03 -1,18528884E-02 -3,54954239E-03 5,14186148E-04 A6 = -6,34531419E-03 -1,39944889E-03 -6,02328657E-04 -3,54730158E-04 A8 = 3,79218757E-03 1,21093379E-03 1,23194782E-04 1,24719031E-04 A10 = -1,46700773E-03 -6,17841772E-04 -3,56801259E-05 -7,51853714E-05 A12 = 3,90474723E-04 2,35940564E-04 7,92925362E-06 3,29562917E-05 A14 = -7,24765523E-05 -6,72207447E-05 -7,62354011E-07 -9,51413792E-06 A16 = 9,44335268E-06 1,43265804E-05 -6,71585278E-08 1,84123799E-06 A18 = -8,60761603E-07 -2,29032494E-06 2,72416223E-08 -2,40831418E-07 A20 = 5,36470805E-08 2,72911766E-07 -3,08358997E-09 2,10588187E-08 A22 = -2,15999606E-09 -2,38173239E-08 1,60651773E-10 -1,17745400E-09 A24 = 4,95791676E-11 1,47431157E-09 -3,26977644E-12 3,78660053E-11 A26 = -4,70762934E-13 -6,11773447E-11 - -5,26893090E-13 A28 = - 1,52436479E-12 - - A30 = - -1,72297567E-14 - - Surface # 14 15 16 17 k = 0,0000E+00 0,0000E+00 0,0000E+00 0,0000E+00 A4 = 9,59169480E-02 8,35045188E-02 -5,38146916E-03 -4,25133020E-03 A6 = -4,84182138E-02 -4,19731630E-02 -5,01517087E-03 -3,37961431E-03 A8 = 2,22841354E-02 1,76935106E-02 6,05645917E-03 2,66077483E-03 A10 = -7,71835558E-03 -5,95692238E-03 -7,45392484E-03 -3,44277971E-03 A12 = 1,92948189E-03 1,76140661E-03 5,95695383E-03 2,82680420E-03 A14 = -3,28753271E-04 -5,32354369E-04 -3,11882029E-03 -1,43954595E-03 A16 = 3,52822149E-05 1,60300962E-04 1,11863736E-03 4,87272861E-04 A18 = -1,99012383E-06 -3,95202938E-05 -2,82173913E-04 -1,13960511E-04 A20 = 2,24723172E-08 6,87685215E-06 5,05499478E-05 1,87034369E-05 A22 = 2,06637135E-09 -7,70370894E-07 -6,39786374E-06 -2,14885752E-06 A24 = - 4,95937518E-08 5,59174849E-07 1,69159708E-07 A26 = - -1,39296824E-09 -3,21021492E-08 -8,68492081E-09 A28 = - - 1,08904314E-09 2,61718975E-10 A30 = - - -1,65397043E-11 -3,50828327E-12 Surface # 18 19 k = 0,0000E+00 0,0000E+00 A4 = -6,11521435E-03 -7,98096923E-03 A6 = -4,50717243E-05 8,39512944E-04 A8 = 1,27165802E-03 1,84353221E-04 A10 = -2,21889045E-03 -7,56507236E-04 A12 = 1,70692725E-03 5,88494013E-04 A14 = -7,83690162E-04 -2,51539468E-04 A16 = 2,39351202E-04 6,96421226E-05 A18 = -5,09633856E-05 -1,32747624E-05 A20 = 7,70043418E-06 1,78281866E-06 A22 = -8,24201680E-07 -1,68833098E-07 A24 = 6,11720522E-08 1,10528733E-08 A26 = -2,99614611E-09 -4,76593865E-10 A28 = 8,71015133E-11 1,21879746E-11 A30 = -1,13773245E-12 -1,40119501E-13

[0138] In Embodiment 2, the equation for the aspherical surface profiles of the aforementioned lens elements is the same as that of Embodiment 1. The definitions of these parameters, shown in Table 2D below, are also the same as those given in Embodiment 1, with corresponding values ​​for Embodiment 2; therefore, explanations will not be repeated.

[0139] In addition, these parameters from Table 2A to Table 2C can be calculated as the following values ​​and satisfy the following conditions: TABLE 2D Values ​​of optical and physical parameters / definitions fL [mm] 21,38 fL / fS 1,61 FnoL 2,50 TL / fL 1,01 HFOVL [degree] 12,9 TL / lmgH 4,33 FOVL [degree] 25,8 fL / f234 1,84 Dr3i / BL (first state) 2,22 f1 / f2 -0,48 T12 / f+T12 / BL (first state) 0,34 (f4+f5) / f1 0,09 T12 / CT1 (first state) 1,02 (|R8|+|R10|) / fL 0,87 T56 / CT1 (first state) 1,38 R10 / R1 -1,28 T34 / T45 (first state) 1,29 R6 / R3 0,50 fS [mm] 13,30 R6 / R8 -0,59 FnoS 3,05 ΣCT / ΣAT 0,73 HFOVS [degree] 12,4 10×(CT5+CT6) / f6 0,10 FOVS [degrees] 24,8 CT6 / CT7 0,76 Dr3i / BL (second state) 2,42 ΣETL / ΣCT 0,76 T12 / f+T12 / BL (second state) 0,07 ET6L / CT6 0,74 T12 / CT1 (second state) 0,18 ET7L / CT7 0,85 T56 / CT1 (second state) 1,38 Y7R1L / Y6R2L 1,05 T34 / T45 (second state) 0,46 SAG7R1L / SAG7R2L 0,95 3. Embodiment

[0140] Fig. 7 is a schematic view of an image acquisition unit in a first state and a second state according to the third embodiment of the present disclosure. Fig.8 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit in the first state according to the 3rd embodiment. Fig. Fig. 9 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit in the second state according to the third embodiment. In Fig.7, the image acquisition unit 3 includes the imaging optical lens assembly (the reference numeral of which is omitted) of the present disclosure and an image sensor IS. The imaging optical lens assembly includes, in order from an object side to an image side along an optical path, a first reflective element E8, a stop S1, a first lens element E1, a second lens element E2, a third lens element E3, a stop S2, a fourth lens element E4, a stop S3, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, a second reflective element E9, a filter E10, and an image surface IMG. Further, the imaging optical lens assembly has a movable group Gm, and the movable group Gm includes the second lens element E2, the third lens element E3, the stop S2, and the fourth lens element E4.The imaging optical lens assembly includes seven lens elements (E1, E2, E3, E4, E5, E6, and E7), with no additional lens element disposed between each of the adjacent seven lens elements. Furthermore, no additional lens element is disposed between the first lens element E1 and the first reflective element E8 along an optical axis, and no additional lens element is disposed between the seventh lens element E7 and the second reflective element E9 along the optical axis.

[0141] When an imaged object is placed at an infinite object distance, the optical lens assembly for imaging is in the first state as shown in the upper part of Fig. 7. When an imaged object is located at a finite object distance, the optical lens assembly for imaging is in the second state, as shown in the lower part of Fig.7. When an imaged object is moved from an infinite object distance to a finite object distance, the movable group Gm is moved along the optical axis for focus adjustment, and the imaging optical lens assembly is transferred from the first state to the second state. Conversely, when an imaged object is moved from a finite object distance to an infinite object distance, the movable group Gm is moved along the optical axis for focus adjustment, and the imaging optical lens assembly is transferred from the second state to the first state. Specifically, the movable group Gm is moved along the optical axis toward the object side during the focus adjustment process when the imaging optical lens assembly is transferred from the first state to the second state. It should be noted that all elements (e.g.,the diaphragm, the lens element and / or the aperture stop) in the movable group Gm are immobile relative to each other during the focus adjustment process.

[0142] The first reflective element E8 is made of glass and is arranged along the optical path between an imaged object and the first lens element E1. It does not affect the focal length of the optical lens assembly for imaging. The first reflective element E8 is a prism with a light path deflection function.

[0143] The first lens element E1 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The first lens element E1 is made of plastic material and has both the object-side surface and the image-side surface aspherical.

[0144] The second lens element E2 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The second lens element E2 is made of plastic material and has both the object-side surface and the image-side surface aspherical. The object-side surface of the second lens element E2 has an inflection point. The image-side surface of the second lens element E2 has an inflection point.

[0145] The third lens element E3 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The third lens element E3 is made of plastic material and has both the object-side surface and the image-side surface aspherical. The object-side surface of the third lens element E3 has an inflection point. The image-side surface of the third lens element E3 has an inflection point. The image-side surface of the third lens element E3 has a critical point in an off-axis region thereof.

[0146] The fourth lens element E4 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has both the object-side surface and the image-side surface aspherical. The object-side surface of the fourth lens element E4 has an inflection point. The image-side surface of the fourth lens element E4 has an inflection point.

[0147] The fifth lens element E5 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The fifth lens element E5 is made of plastic material and has the object-side surface and the image-side surface both aspherical. The object-side surface of the fifth lens element E5 has an inflection point. The image-side surface of the fifth lens element E5 has an inflection point. The object-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof. The image-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof.

[0148] The sixth lens element E6 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has the object-side surface and the image-side surface both aspherical. The object-side surface of the sixth lens element E6 has two inflection points. The image-side surface of the sixth lens element E6 has two inflection points. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof. The image-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof.

[0149] The seventh lens element E7 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The seventh lens element E7 is made of plastic material and has the object-side surface and the image-side surface both aspherical. The object-side surface of the seventh lens element E7 has an inflection point. The image-side surface of the seventh lens element E7 has an inflection point. The object-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof. The image-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof.

[0150] The second reflective element E9 is made of glass material and is arranged along the optical path between the seventh lens element E7 and the image surface IMG. It does not affect the focal length of the optical lens assembly for imaging. The second reflective element E9 is a prism with a beam path deflection function. To simplify the illustration, Fig.7, the deflection effect on the beam path caused by the first reflective element E8 and the second reflective element E9 is not shown. However, the first reflective element E8 and the second reflective element E9 may have different configurations depending on the actual design requirements, thereby achieving different deflection effects on the beam path. In addition, the first reflective element E8 and the second reflective element E9 of this embodiment may each have a configuration that corresponds, for example, to one of the configurations in Fig. 37 and Fig. 38, to which reference is made in the above descriptions Fig. 37 and Fig. 38, and the relevant details are not repeated.

[0151] The filter E10 is made of glass and is located between the second reflective element E9 and the image surface IMG. It does not affect the focal length of the imaging optical lens assembly. The image sensor IS is located on or near the image surface IMG of the imaging optical lens assembly.

[0152] The detailed optical data of the third embodiment are shown in Table 3A and Table 3B, and the data of the aspherical surfaces are shown in Table 3C below. TABLE 3A 3. Embodiment Surface# radius of curvature thickness material index Abbé # focal length 0 object Plano D0 1 Prism 1 Plano 8,200 Glass 1,847 23,8 - 2 Plano 1,446 3 aperture Plano -0,766 4 Lens 1 11,4722 (ASP) 1,411 plastic 1,544 55,9 19,31 5 -117,6471 (ASP) D1 6 Lens 2 8,1782 (ASP) 0,952 plastic 1,642 22,5 -19,63 7 4,7334 (ASP) 0,166 8 Lens 3 4,1551 (ASP) 0,563 plastic 1,544 56,0 94,13 9 4,3061 (ASP) 0,449 10 aperture Plano 0,170 11 Lens 4 6,4008 (ASP) 2,787 plastic 1,534 56,0 8,72 12 -14,4988 (ASP) D2 13 aperture Plano 0,198 14 Lens 5 -2,9037 (ASP) 0,370 plastic 1,511 56,8 -12,93 15 -5,4032 (ASP) 1,337 16 Lens 6 20,3118 (ASP) 0,420 plastic 1,615 25,4 -23,92 17 8,4609 (ASP) 0,100 18 Lens 7 6,1996 (ASP) 0,993 plastic 1,551 44,8 48,97 19 7,5920 (ASP) 0,500 20 Prism 2 Plano 6,500 Glass 1,847 23,8 - 21 Plano 0,200 22 filter Plano 0,210 Glass 1,517 64,2 - 23 Plano 0,413 24 Picture Plano - Note: Reference wavelength is 587.6 nm (d-line). An effective radius of the aperture S1 (surface 3) is 4.205 mm. An effective radius of the aperture S2 (surface 10) is 2.827 mm. An effective radius of the aperture S3 (area 13) is 2.474 mm. The optical lens assembly for imaging may further comprise an aperture stop, wherein the position of the aperture stop can be adjusted depending on the object distance or depending on the arrangement of the front reflective element (the first reflective element) or the trimmed edge(s) of the lens element(s).

[0153] In this embodiment, an axial distance between the image-side surface of the first lens element E1 and the object-side surface of the second lens element E2 is D1. The values ​​of the object distances D0, D1, and D2 may change depending on whether the optical lens assembly is in the first state for imaging or the second state for focus adjustment (as shown in Table 3B below). Except for the definition of D1 given above in this paragraph, the definitions of the parameters given in Table 3B are the same as those given in the first embodiment, with corresponding values ​​for the third embodiment; therefore, no further explanations will be given. TABLE 3B Values ​​of optical and physical parameters / definitions First state (infinite object distance) Second state (finite object distance) fL [mm] 17,14 fS [mm] 11,89 FnoL 2,22 FnoS 2,92 HFOVL [degree] 16,4 HFOVS [degree] 14,9 Object distance [mm] ∞ Object distance [mm] 58,880 D0 [mm] ∞ D0 [mm] 50,000 D1 [mm] 3,100 D1 [mm] 0,743 D2 [mm] 0,666 D2 [mm] 3,023

[0154] It should be understood that only two movable focus states (i.e., the first state and the second state) are disclosed in this embodiment, but the present disclosure is not limited thereto. In addition to the first state and the second state, the imaging optical lens assembly in this embodiment may also have other movable focus states with different focal lengths between the first state and the second state to accommodate focusing conditions for different object distances.

[0155] In Table 3B, the movable group Gm of the imaging optical lens assembly is moved for focus adjustment according to the change in the object distance. For example, when an imaged object is moved from an infinite object distance to a finite object distance, the movable group Gm for focus adjustment is moved along the optical axis toward the object side, so that the imaging optical lens assembly is transferred from the first state to the second state.Specifically, when the object distance changes from infinity to a finite object distance of 58.880 mm, the imaging optical lens assembly is transitioned from the first state to the second state, the axial distance D1 between the image-side surface of the first lens element E1 and the object-side surface of the second lens element E2 decreases from 3.100 mm in the first state to 0.743 mm in the second state, and the axial distance D2 between the image-side surface of the fourth lens element E4 and the diaphragm S3 increases from 0.666 mm in the first state to 3.023 mm in the second state. In other words, as the object distance decreases, the movable group Gm is moved along the optical axis toward the object side during the focus adjustment operation. TABLE 3C Aspherical coefficients Surface # 4 5 6 7 k = 0,0000E+00 0,0000E+00 0,0000E+00 0,0000E+00 A4 = -4,81606923E-05 -7,15149322E-05 -1,54497255E-03 3,41837184E-03 A6 = 1,63257061E-06 1,90799265E-06 -4,51409211E-04 -5,25102307E-03 A8 = -1,94475903E-07 -2,03966189E-07 -2,22572157E-04 6,85645659E-04 A10 = 6,10410805E-09 1,09522547E-08 2,96184569E-04 1,13953135E-03 A12 = - -1,46237767E-10 -1,73298991E-04 -9,83175274E-04 A14 = - - 6,51448456E-05 4,35825071E-04 A16 = - - -1,70588357E-05 -1,27926403E-04 A18 = - - 3,20069926E-06 2,64590207E-05 A20 = - - -4,32511714E-07 -3,90644774E-06 A22 = - - 4,16512751E-08 4,07674222E-07 A24 = - - -2,78153064E-09 -2,92410404E-08 A26 = - - 1,22111415E-10 1,36649676E-09 A28 = - - -3,16195100E-12 -3,74084865E-11 A30 = - - 3,65066224E-14 4,56098290E-13 Surface # 8 9 11 12 k = 0,0000E+00 0,0000E+00 0,0000E+00 0,0000E+00 A4 = -1,56560601E-04 -1,05280332E-02 -2,29522637E-03 1,90848475E-03 A6 = -6,20606975E-03 -1,28770125E-03 -1,90684099E-04 -4,76033129E-04 A8 = 1,38363166E-03 -6,66132440E-05 -2,78458175E-05 8,03823606E-04 A10 = 8,54498962E-04 1,05827161E-03 1,21871308E-04 -7,64572201\E-04 A12 = -7,76930083E-04 -9,01859120E-04 -6,57985478E-05 4,80899815E-04 A14 = 3,11065566E-04 4,64601141E-04 1,92257882E-05 -2,03960757E-04 A16 = -7,90956882E-05 -1,70547559E-04 -3,57366717E-06 5,92813280E-05 A18 = 1,36809855E-05 4,59466918E-05 4,33436525E-07 -1,18264343E-05 A20 = -1,60554699E-06 -9,06145061E-06 -3,33149831E-08 1,59143124E-06 A22 = 1,22068712E-07 1,28820358E-06 1,47751841E-09 -1,37969161E-07 A24 = -5,40454962E-09 -1,28228431E-07 -2,88853600E-11 6,95425684E-09 A26 = 1,05402287E-10 8,47017241E-09 - -1,54772807E-10 A28 = - -3,33245370E-10 - - A30 = - 5,90612884E-12 - - Surface # 14 15 16 17 k = 0,0000E+00 0,0000E+00 0,0000E+00 0,0000E+00 A4 = 8,14608873E-02 7,33993982E-02 6,55408615E-03 3,00952325E-04 A6 = -2,97673110E-02 -2,54735442E-02 -1,74827748E-02 -1,94391453E-02 A8 = 1,07978631E-02 6,69517725E-03 1,11381721E-02 1,51267616E-02 A10 = -3,18404536E-03 -7,01452848E-04 -6,85790153E-03 -8,74973092E-03 A12 = 7,45056063E-04 -3,87372321E-04 3,48528881E-03 3,91229810E-03 A14 = -1,32315452E-04 2,63550018E-04 -1,32481875E-03 -1,34562236E-03 A16 = 1,70942622E-05 -8,85895869E-05 3,56493041E-04 3,55074771E-04 A18 = -1,50578031E-06 1,95595418E-05 -6,23330415E-05 -7,13311154E-05 A20 = 8,04995680E-08 -2,93570684E-06 5,27153885E-06 1,07492088E-05 A22 = -1,94764505E-09 2,89269922E-07 3,54015416E-07 -1,18723919E-06 A24 = - -1,68889589E-08 -1,59900473E-07 9,27250481E-08 A26 = - 4,42650974E-10 2,00417708E-08 -4,82580399E-09 A28 = - - -1,22084159E-09 1,49543986E-10 A30 = - - 3,05555627E-11 -2,07984156E-12 Surface # 18 19 k = 0,0000E+00 0,0000E+00 A4 = -1,26772499E-02 -9,97027545E-03 A6 = -3,07387109E-03 2,23670214E-03 A8 = 5,43585615E-03 -5,47817881E-04 A10 = -3,06692159E-03 1,82278480E-04 A12 = 1,10232423E-03 -6,55781225E-05 A14 = -2,82908007E-04 1,78460053E-05 A16 = 5,37286665E-05 -3,40807022E-06 A18 = -7,63969517E-06 4,57550793E-07 A20 = 8,12139795E-07 -4,33773402E-08 A22 = -6,36712488E-08 2,88299136E-09 A24 = 3,57435657E-09 -1,31071564E-10 A26 = -1,35916656E-10 3,86797817E-12 A28 = 3,13486850E-12 -6,63908058E-14 A30 = -3,31011845E-14 4,98569860E-16

[0156] In the third embodiment, the equation for the aspherical surface profiles of the aforementioned lens elements is the same as the equation for the first embodiment. The definitions of these parameters, shown in Table 3D below, are also the same as those given in the first embodiment, with corresponding values ​​for the third embodiment; therefore, explanations will not be repeated.

[0157] In addition, these parameters from Table 3A to Table 3C can be calculated as the following values ​​and satisfy the following conditions: TABLE 3D Values ​​of optical and physical parameters / definitions fL [mm] 17,14 fL / fS 1,44 FnoL 2,22 TL / fL 1,25 HFOVL [degree] 16,4 TL / ImgH 4,18 FOVL [degree] 32,8 fL / f234 1,20 Dr3i / BL (first state) 2,17 f1 / f2 -0,98 T12 / f+T12 / BL (first state) 0,58 (f4+f5) / f1 -0,22 T12 / CT1 (first state) 2,20 (|R8|+|R10|) / fL 1,16 T56 / CT1 (first state) 0,95 R10 / R1 -0,47 T34 / T45 (first state) 0,72 R6 / R3 0,53 fS [mm] 11,89 R6 / R8 -0,30 FnoS 2,92 ΣCT / ΣAT 1,21 HFOVS [degree] 14,9 10×(CT5+CT6) / f6 -0,33 FOVS [degrees] 29,8 CT6 / CT7 0,42 Dr3i / BL (second state) 2,47 ΣETL / ΣCT 0,86 T12 / f+T12 / BL (second state) 0,16 ET6L / CT6 1,59 T12 / CT1 (second state) 0,53 ET7L / CT7 0,69 T56 / CT1 (second state) 0,95 Y7R1L / Y6R2L 1,17 T34 / T45 (second state) 0,19 SAG7R1L / SAG7R2L 2,98 4. Embodiment

[0158] Fig. 10 is a schematic view of an image acquisition unit in a first state and a second state according to the fourth embodiment of the present disclosure. Fig.11 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit in the first state according to the fourth embodiment. Fig. Fig. 12 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit in the second state according to the fourth embodiment. In Fig.10, the image acquisition unit 4 includes the imaging optical lens assembly (the reference numeral of which is omitted) of the present disclosure and an image sensor IS. The imaging optical lens assembly includes, in order from an object side to an image side along an optical path, a first reflective element E8, a stop S1, a first lens element E1, a stop S2, a second lens element E2, a third lens element E3, a stop S3, a fourth lens element E4, a stop S4, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, a second reflective element E9, a filter E10, and an image surface IMG. Further, the imaging optical lens assembly includes a movable group Gm, and the movable group Gm includes the stop S2, the second lens element E2, the third lens element E3, the stop S3, and the fourth lens element E4.The imaging optical lens assembly includes seven lens elements (E1, E2, E3, E4, E5, E6, and E7), with no additional lens element disposed between each of the seven adjacent lens elements. Additionally, no additional lens element is disposed between the first lens element E1 and the first reflective element E8 along an optical axis, and no additional lens element is disposed between the seventh lens element E7 and the second reflective element E9 along the optical axis.

[0159] When an imaged object is placed at an infinite object distance, the optical lens assembly for imaging is in the first state as shown in the upper part of Fig. 10. When an imaged object is located at a finite object distance, the optical lens assembly for imaging is in the second state, as shown in the lower part of Fig.10. When an imaged object is moved from an infinite object distance to a finite object distance, the movable group Gm is moved along the optical axis for focus adjustment, and the imaging optical lens assembly is transferred from the first state to the second state. Conversely, when an imaged object is moved from a finite object distance to an infinite object distance, the movable group Gm is moved along the optical axis for focus adjustment, and the imaging optical lens assembly is transferred from the second state to the first state. Specifically, the movable group Gm is moved along the optical axis toward the object side during the focus adjustment process when the imaging optical lens assembly is transferred from the first state to the second state. It should be noted that all elements (e.g.,the diaphragm, the lens element and / or the aperture stop) in the movable group Gm are immobile relative to each other during the focus adjustment process.

[0160] The first reflective element E8 is made of glass and is arranged along the optical path between an imaged object and the first lens element E1. It does not affect the focal length of the optical lens assembly for imaging. The first reflective element E8 is a prism with a light path deflection function.

[0161] The first lens element E1 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The first lens element E1 is made of glass material and has both the object-side surface and the image-side surface aspherical. The object-side surface of the first lens element E1 has an inflection point. The image-side surface of the first lens element E1 has an inflection point.

[0162] The second lens element E2 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The second lens element E2 is made of plastic material and has both the object-side surface and the image-side surface aspherical. The object-side surface of the second lens element E2 has an inflection point. The image-side surface of the second lens element E2 has an inflection point. The image-side surface of the second lens element E2 has a critical point in an off-axis region thereof.

[0163] The third lens element E3 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The third lens element E3 is made of plastic material and has the object-side surface and the image-side surface both aspherical. The object-side surface of the third lens element E3 has two inflection points. The image-side surface of the third lens element E3 has one inflection point. The object-side surface of the third lens element E3 has a critical point in an off-axis region thereof. The image-side surface of the third lens element E3 has a critical point in an off-axis region thereof.

[0164] The fourth lens element E4 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has the object-side surface and the image-side surface both aspherical. The object-side surface of the fourth lens element E4 has two inflection points. The image-side surface of the fourth lens element E4 has one inflection point. The object-side surface of the fourth lens element E4 has two critical points in an off-axis region thereof. The image-side surface of the fourth lens element E4 has one critical point in an off-axis region thereof.

[0165] The fifth lens element E5 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The fifth lens element E5 is made of plastic material and has the object-side surface and the image-side surface both aspherical. The object-side surface of the fifth lens element E5 has an inflection point. The image-side surface of the fifth lens element E5 has an inflection point. The object-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof. The image-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof.

[0166] The sixth lens element E6 with positive refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has both an object-side surface and an image-side surface that are aspherical. The object-side surface of the sixth lens element E6 has an inflection point. The image-side surface of the sixth lens element E6 has an inflection point.

[0167] The seventh lens element E7 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The seventh lens element E7 is made of plastic material and has both the object-side surface and the image-side surface aspherical. The object-side surface of the seventh lens element E7 has three inflection points. The image-side surface of the seventh lens element E7 has three inflection points. The image-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof.

[0168] The second reflective element E9 is made of glass material and is arranged along the optical path between the seventh lens element E7 and the image surface IMG. It does not affect the focal length of the optical lens assembly for imaging. The second reflective element E9 is a prism with a beam path deflection function. To simplify the illustration, Fig.10, the deflection effect on the beam path caused by the first reflective element E8 and the second reflective element E9 is not shown. However, the first reflective element E8 and the second reflective element E9 can have different configurations depending on the actual design requirements, thereby producing different deflection effects on the beam path. In addition, the first reflective element E8 and the second reflective element E9 of this embodiment can each have a configuration corresponding, for example, to one of the configurations shown in Fig. 37 and Fig. 38 shown configurations, which can be accessed with reference to the above descriptions Fig. 37 and Fig. 38, without repeating the details in this regard.

[0169] The filter E10 is made of glass and is located between the second reflective element E9 and the image surface IMG. It does not affect the focal length of the imaging optical lens assembly. The image sensor IS is located on or near the image surface IMG of the imaging optical lens assembly.

[0170] The detailed optical data of the fourth embodiment are shown in Table 4A and Table 4B, and the data of the aspherical surfaces are shown in Table 4C below. TABLE 4A 4. Embodiment Surface# radius of curvature thickness material index Abbé # focal length 0 object Plano D0 1 Prism 1 Plano 8,350 Glass 1,847 23,8 - 2 Plano 2,023 3 aperture Plano -1,343 4 Lens 1 8,9044 (ASP) 1,895 Glass 1,497 81,6 22,48 5 40,6962 (ASP) D1 6 aperture Plano -1,010 7 Lens 2 5,9785 (ASP) 1,328 plastic 1,544 56,0 18,69 8 13,3735 (ASP) 0,459 9 Lens 3 9,1919 (ASP) 0,430 plastic 1,660 20,4 -24,79 10 5,7755 (ASP) 0,976 11 aperture Plano 0,073 12 Lens 4 217,9183 (ASP) 0,681 plastic 1,544 56,0 16,21 13 -9,1798 (ASP) D2 14 aperture Plano 0,121 15 Lens 5 -3,4626 (ASP) 0,400 plastic 1,566 37,4 -16,62 16 -5,7084 (ASP) 1,356 17 Lens 6 -20,4874 (ASP) 0,504 plastic 1,669 19,5 2596,79 18 -20,4483 (ASP) 0,050 19 Lens 7 -39,4068 (ASP) 0,506 plastic 1,544 56,0 -19,72 20 14,8097 (ASP) 0,380 21 Prism 2 Plano 6,900 Glass 1,847 23,8 - 22 Plano 0,150 23 filter Plano 0,210 Glass 1,517 64,2 - 24 Plano 0,670 25 Picture Plano - Note: Reference wavelength is 587.6 nm (d-line). An effective radius of the aperture S1 (surface 3) is 4,900 mm. An effective radius of the aperture S2 (surface 6) is 3.599 mm. An effective radius of the aperture S3 (surface 11) is 3.088 mm. An effective radius of the aperture S4 (area 14) is 2.223 mm. The optical lens assembly for imaging may further comprise an aperture stop, and the position of the aperture stop may be adjusted depending on the object distance or depending on the arrangement of the front reflective element (the first reflective element) or the trimmed edge(s) of the lens element(s).

[0171] In this embodiment, an axial distance between the image-side surface of the fourth lens element E4 and the diaphragm S4 is D2. The values ​​of the object distances D0, D1, and D2 may change depending on whether the optical lens assembly is in the first state for imaging or the second state for focus adjustment (as shown in Table 4B below). Except for the above definition of D2 in this paragraph, the definitions of the parameters shown in Table 4B are the same as those of the first embodiment, with corresponding values ​​for the fourth embodiment; therefore, no further explanations will be given. TABLE 4B Values ​​of optical and physical parameters / definitions First state (infinite object distance) Second state (finite object distance) fL [mm] 18,81 fS [mm] 13,02 FnoL 1,93 FnoS 2,47 HFOVL [degree] 15,0 HFOVS [degree] 13,4 Object distance [mm] ∞ Object distance [mm] 69,030 D0 [mm] ∞ D0 [mm] 60,000 D1 [mm] 4,847 D1 [mm] 2,747 D2 [mm] 0,754 D2 [mm] 2,854

[0172] It should be understood that only two movable focus states (i.e., the first state and the second state) are disclosed in this embodiment, but the present disclosure is not limited thereto. In addition to the first state and the second state, the imaging optical lens assembly in this embodiment may also have other movable focus states with different focal lengths between the first state and the second state to accommodate focusing conditions for different object distances.

[0173] In Table 4B, the movable group Gm of the imaging optical lens assembly is moved according to the change in the object distance for focus adjustment. For example, when an imaged object is moved from an infinite object distance to a finite object distance, the movable group Gm for focus adjustment is moved along the optical axis toward the object side, so that the imaging optical lens assembly is transferred from the first state to the second state.Specifically, when the object distance changes from an infinite object distance to a finite object distance of 69.030 mm, the optical lens assembly for imaging is transferred from the first state to the second state, the axial distance D1 between the image-side surface of the first lens element E1 and the diaphragm S2 decreases from 4.847 mm in the first state to 2.747 mm in the second state, and the axial distance D2 between the image-side surface of the fourth lens element E4 and the diaphragm S4 increases from 0.754 mm in the first state to 2.854 mm in the second state. In other words, as the object distance decreases, the movable group Gm is moved toward the object side along the optical axis during the focus adjustment operation. TABLE 4C Aspherical coefficients Surface # 4 5 7 8 k = 0.0000E+00 0,0000E+00 0,0000E+00 0,0000E+00 A4 = -1,61463256E-04 -1,26192622E-04 -3,73871589E-06 -2,71295255E-03 A6 = 3,94533894E-05 -3,93986927E-05 1,09240102E-04 2,30940746E-03 A8 = -2,43352309E-05 3,46531915E-05 5,56937519E-05 -1,14785113E-03 A10 = 1,01164494E-05 -1,45490160E-05 -8,83204920E-05 5,19412571E-04 A12 = -2,79138020E-06 3,77790992E-06 5,55044502E-05 -2,31737739E-04 A14 = 5,21821659E-07 -6,65076120E-07 -2,22365730E-05 8,18370381E-05 A16 = -6,79552130E-08 8,26314296E-08 6,05522695E-06 -2,10137295E-05 A18 = 6,27446495E-09 -7,38625475E-09 -1,14895885E-06 3,87826480E-06 A20 = -4,13203035E-10 4,77562904E-10 1,53312615E-07 -5,13816697E-07 A22 = 1,92745688E-11 -2,21582897E-11 -1,43154466E-08 4,84041438E-08 A24 = -6,22040984E-13 7,19907013E-13 9,14661977E-10 -3,16187558E-09 A26 = 1,32079186E-14 -1,55592287E-14 -3,80517054E-11 1,36032725E-10 A28 = -1,65983929E-16 2,01040500E-16 9,27374688E-13 -3,46441519E-12 A30 = 9,35346571E-19 -1,17544191E-18 -1,00294796E-14 3,95465039E-14 Surface # 9 10 12 13 k = 0,0000E+00 0,0000E+00 0,0000E+00 0,0000E+00 A4 = -1,46469001E-02 -1,46918150E-02 -2,45487027E-03 -3,99226567E-05 A6 = 5,28016601E-03 4,44129231E-03 7,35416884E-04 1,76525861E-04 A8 = -1,95351838E-03 -1,78743668E-03 -6,76102256E-04 -2,66813794E-05 A10 = 4,58999526E-04 4,73983133E-04 3,89069514E-04 -6,93815866E-05 A12 = -8,25294182E-05 -1,02739194E-04 -1,55221854E-04 8,22786291E-05 A14 = 1,45954302E-05 2,44507060E-05 4,38682388E-05 -4,28817838E-05 A16 = -2,54438534E-06 -5,88142438E-06 -8,58835470E-06 1,34769505E-05 A18 = 3,49403431E-07 1,09467851E-06 1,12403068E-06 -2,73410525E-06 A20 = -3,25319804E-08 -1,41176672E-07 -9,27434065E-08 3,60211344E-07 A22 = 1,89491144E-09 1,22725347E-08 4,32669850E-09 -2,97050404E-08 A24 = -6,22330812E-11 -7,03596380E-10 -8,65618768E-11 1,38902730E-09 A26 = 8,80707059E-13 2,53677946E-11 - -2,80246381E-11 A28 = - -5,16399391E-13 - - A30 = - 4,45027496E-15 - - Surface # 15 16 17 18 k = 0,0000E+00 0,0000E+00 0,0000E+00 0,0000E+00 A4 = 6,61627752E-02 6,55648447E-02 2,33305874E-02 2,50678317E-02 A6 = -1,84779814E-02 -1,88505770E-02 -2,73953984E-02 -4,13352040E-02 A8 = 5,85034355E-03 1,11633327E-02 2,63519006E-02 4,59647484E-02 A10 = -2,66090605E-03 -1,19884097E-02 -2,54424922E-02 -3,94307919E-02 A12 = 1,49156114E-03 1,03484393E-02 1,76187556E-02 2,41331798E-02 A14 = -6,66929775E-04 -6,09978124E-03 -8,10600290E-03 -1,07304157E-02 A16 = 2,05181026E-04 2,46780396E-03 2,26022874E-03 3,53081682E-03 A18 = -4,17307917E-05 -6,87855955E-04 -2,45401619E-04 -8,63772848E-04 A20 = 5,36964433E-06 1,29960172E-04 -6,86975412E-05 1,55791748E-04 A22 = -3,96384452E-07 -1,58979876E-05 3,48034359E-05 -2,03022081E-05 A24 = 1,28025699E-08 1,13586079E-06 -7,02481375E-06 1,84689937E-06 A26 = - -3,59723763E-08 7,87554969E-07 -1,10625831E-07 A28 = - - -4,79633962E-08 3,90239837E-09 A30 = - - 1,24114798E-09 -6,11937951E-11 Surface # 19 20 k = 0,0000E+00 0,0000E+00 A4 = -1,40608418E-02 -2,51072426E-02 A6 = -1,36691786E-02 1,19419596E-02 A8 = 2,92226565E-02 -4,61004617E-03 A10 = -2,45051669E-02 1,68490886E-03 A12 = 1,26551481E-02 -5,50462514E-04 A14 = -4,39124416E-03 1,47685154E-04 A16 = 1,05871607E-03 -3,15920473E-05 A18 = -1,80074694E-04 5,25616895E-06 A20 = 2,16579619E-05 -6,58497375E-07 A22 = -1,82156286E-06 5,99354115E-08 A24 = 1,04077052E-07 -3,80271383E-09 A26 = -3,81134961E-09 1,58449080E-10 A28 = 7,94337276E-11 -3,88459705E-12 A30 = -6,96700232E-13 4,24127058E-14

[0174] In the fourth embodiment, the equation for the aspherical surface profiles of the aforementioned lens elements is the same as the equation for the first embodiment. The definitions of these parameters, shown in Table 4D below, are also the same as those given in the first embodiment, with corresponding values ​​for the fourth embodiment; therefore, explanations will not be repeated.

[0175] In addition, these parameters can be calculated from Tables 4A to 4C as the following values ​​and satisfy the following conditions: TABLE 4D Values ​​of optical and physical parameters / definitions fL [mm] 18,81 fL / fS 1,44 FnoL 1,93 TL / fL 1,15 HFOVL [degree] 15,0 TL / lmgH 4,23 FOVL [degree] 30,0 fL / f234 1,33 Dr3i / BL (first state) 1,92 f1 / f2 1,20 T12 / f+T12 / BL (first state) 0,67 (f4+f5) / f1 -0,02 T12 / CT1 (first state) 2,02 (|R8|+|R10|) / fL 0,79 T56 / CT1 (first state) 0,72 R10 / R1 -0,64 T34 / T45 (first state) 1,20 R6 / R3 0,97 fS [mm] 13,02 R6 / R8 -0,63 FnoS 2,47 ΣCT / ΣAT 0,75 HFOVS [degree] 13,4 10×(CT5+CT6) / f6 0,0035 FOVS [degrees] 26,8 CT6 / CT7 1,00 Dr3i / BL (second state) 2,17 ΣETL / ΣCT 0,70 T12 / f+T12 / BL (second state) 0,34 ET6L / CT6 0,85 T12 / CT1 (second state) 0,92 ET7L / CT7 1,02 T56 / CT1 (second state) 0,72 Y7R1L / Y6R2L 1,12 T34 / T45 (second state) 0,35 SAG7R1L / SAG7R2L 1,03 5. Embodiment

[0176] Fig. 13 is a schematic view of an image acquisition unit in a first state and a second state according to the 5th embodiment of the present disclosure. Fig.14 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit in the first state according to the 5th embodiment. Fig. Fig. 15 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit in the second state according to the fifth embodiment. Fig.13, the image acquisition unit 5 includes the imaging optical lens assembly (the reference numeral of which is omitted) of the present disclosure and an image sensor IS. The imaging optical lens assembly includes, in order from an object side to an image side along an optical path, a first reflective element E8, a stop S1, a first lens element E1, a second lens element E2, a third lens element E3, a stop S2, a fourth lens element E4, a stop S3, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, a second reflective element E9, a filter E10, and an image surface IMG. Further, the imaging optical lens assembly has a movable group Gm, and the movable group Gm includes the second lens element E2, the third lens element E3, the stop S2, and the fourth lens element E4.The imaging optical lens assembly includes seven lens elements (E1, E2, E3, E4, E5, E6, and E7), with no additional lens element disposed between each of the adjacent seven lens elements. Additionally, no additional lens element is disposed between the first lens element E1 and the first reflective element E8 along an optical axis, and no additional lens element is disposed between the seventh lens element E7 and the second reflective element E9 along the optical axis.

[0177] When an imaged object is placed at an infinite object distance, the optical lens assembly for imaging is in the first state as shown in the upper part of Fig. 13. When an imaged object is located at a finite object distance, the optical lens assembly for imaging is in the second state, as shown in the lower part of Fig.13. When an imaged object is moved from an infinite object distance to a finite object distance, the movable group Gm is moved along the optical axis for focus adjustment, and the imaging optical lens assembly is transferred from the first state to the second state. Conversely, when an imaged object is moved from a finite object distance to an infinite object distance, the movable group Gm is moved along the optical axis for focus adjustment, and the imaging optical lens assembly is transferred from the second state to the first state. Specifically, the movable group Gm is moved along the optical axis toward the object side during the focus adjustment process when the imaging optical lens assembly is transferred from the first state to the second state. It should be noted that all elements (e.g.,the diaphragm, the lens element and / or the aperture stop) in the movable group Gm are immobile relative to each other during the focusing process.

[0178] The first reflective element E8 is made of glass and is arranged along the optical path between an imaged object and the first lens element E1. It does not affect the focal length of the optical lens assembly for imaging. The first reflective element E8 is a prism with a light path deflection function.

[0179] The first lens element E1 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The first lens element E1 is made of plastic material and has both the object-side surface and the image-side surface aspherical.

[0180] The second lens element E2 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The second lens element E2 is made of plastic material and has both the object-side surface and the image-side surface aspherical. The object-side surface of the second lens element E2 has an inflection point. The image-side surface of the second lens element E2 has an inflection point. The object-side surface of the second lens element E2 has a critical point in an off-axis region thereof.

[0181] The third lens element E3 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The third lens element E3 is made of plastic material and has both the object-side surface and the image-side surface aspherical. The object-side surface of the third lens element E3 has an inflection point. The image-side surface of the third lens element E3 has an inflection point. The image-side surface of the third lens element E3 has a critical point in an off-axis region thereof.

[0182] The fourth lens element E4 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has both the object-side surface and the image-side surface aspherical. The object-side surface of the fourth lens element E4 has two inflection points. The image-side surface of the fourth lens element E4 has one inflection point.

[0183] The fifth lens element E5 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The fifth lens element E5 is made of plastic material and has both the object-side surface and the image-side surface aspherical. The object-side surface of the fifth lens element E5 has an inflection point. The image-side surface of the fifth lens element E5 has an inflection point. The image-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof.

[0184] The sixth lens element E6 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has the object-side surface and the image-side surface both aspherical. The object-side surface of the sixth lens element E6 has two inflection points. The image-side surface of the sixth lens element E6 has two inflection points. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof. The image-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof.

[0185] The seventh lens element E7 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The seventh lens element E7 is made of plastic material and has the object-side surface and the image-side surface both aspherical. The object-side surface of the seventh lens element E7 has an inflection point. The image-side surface of the seventh lens element E7 has an inflection point. The object-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof. The image-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof.

[0186] The second reflective element E9 is made of glass material and is arranged along the optical path between the seventh lens element E7 and the image surface IMG. It does not affect the focal length of the optical lens assembly for imaging. The second reflective element E9 is a prism with a beam path deflection function. To simplify the illustration, Fig. 13, the optical path deflection caused by the first reflective element E8 and the second reflective element E9 is not shown. However, the first reflective element E8 and the second reflective element E9 may have various configurations depending on the actual design requirements, thereby achieving different optical path deflection effects. In addition, the first reflective element E8 and the second reflective element E9 of this embodiment may each have a configuration corresponding, for example, to one of the configurations shown in Fig. 37 and Fig. 38 shown configurations, which can be referred to with reference to the above descriptions Fig. 37 and Fig. 38, and the relevant details are not repeated.

[0187] The filter E10 is made of glass and is located between the second reflective element E9 and the image surface IMG. It does not affect the focal length of the imaging optical lens assembly. The image sensor IS is located on or near the image surface IMG of the imaging optical lens assembly.

[0188] The detailed optical data of the 5th embodiment are shown in Table 5A and Table 5B, and the data of the aspherical surfaces are shown in Table 5C below. TABLE 5A 5. Embodiment Surface# radius of curvature thickness material index Abbé # focal length 0 object Plano D0 1 Prism 1 Plano 8,200 Glass 1,847 23,8 - 2 Plano 1,728 3 aperture Plano -1,048 4 Lens 1 9,4974 (ASP) 1,667 plastic 1,544 56,0 19,92 5 71,9708 (ASP) D1 6 Lens 2 7,9958 (ASP) 0,518 plastic 1,669 19,5 -22,76 7 5,1064 (ASP) 0,050 8 Lens 3 3,9976 (ASP) 0,700 plastic 1,544 56,0 44,69 9 4,4891 (ASP) 0,399 10 aperture Plano -0,162 11 Lens 4 9,4385 (ASP) 3,329 plastic 1,544 56,0 10,27 12 -11,9834 (ASP) D2 13 aperture Plano 0,301 14 Lens 5 -2,9119 (ASP) 0,380 plastic 1,511 56,8 -10,94 15 -6,3489 (ASP) 1,287 16 Lens 6 15,7989 (ASP) 0,420 plastic 1,587 28,3 -43,08 17 9,6299 (ASP) 0,100 18 Lens 7 6,2994 (ASP) 0,798 plastic 1,544 56,0 72,11 19 7,1694 (ASP) 0,570 20 Prism 2 Plano 6,500 Glass 1,847 23,8 - 21 Plano 0,160 22 filter Plano 0,210 Glass 1,517 64,2 - 23 Plano 0,599 24 Picture Plano - Note: Reference wavelength is 587.6 nm (d-line). An effective radius of the aperture S1 (surface 3) is 4.620 mm. An effective radius of the aperture S2 (surface 10) is 2.923 mm. An effective radius of the aperture S3 (area 13) is 2.435 mm. The optical lens assembly for imaging may further comprise an aperture stop, wherein the position of the aperture stop can be adjusted depending on the object distance or depending on the arrangement of the front reflective element (the first reflective element) or the trimmed edge(s) of the lens element(s).

[0189] In this embodiment, an axial distance between the image-side surface of the first lens element E1 and the object-side surface of the second lens element E2 is D1. The values ​​of the object distances D0, D1, and D2 may change depending on whether the optical lens assembly is in the first state for imaging or the second state for focus adjustment (as shown in Table 5B below). Except for the above definition of D1 in this paragraph, the definitions of the parameters shown in Table 5B are the same as those of the first embodiment with corresponding values ​​for the fifth embodiment; therefore, no further explanations will be given. TABLE 5B Values ​​of optical and physical parameters / definitions First state (infinite object distance) Second state (finite object distance) fL [mm] 16,67 fS [mm] 12,15 FnoL 1,80 FnoS 2,93 HFOVL [degree] 17,2 HFOVS [degree] 14,2 Object distance [mm] ∞ Object distance [mm] 58,880 D0 [mm] ∞ D0 [mm] 50,000 D1 [mm] 3,400 D1 [mm] 0,962 D2 [mm] 0,580 D2 [mm] 3,018

[0190] It should be understood that only two movable focus states (i.e., the first state and the second state) are disclosed in this embodiment, but the present disclosure is not limited thereto. In addition to the first state and the second state, the imaging optical lens assembly in this embodiment may also have other movable focus states with different focal lengths between the first state and the second state to accommodate focusing conditions for different object distances.

[0191] In Table 5B, the movable group Gm of the imaging optical lens assembly is moved according to the change in the object distance for focus adjustment. For example, when an imaged object is moved from an infinite object distance to a finite object distance, the movable group Gm for focus adjustment is moved along the optical axis toward the object side, so that the imaging optical lens assembly is transferred from the first state to the second state.Specifically, when the object distance changes from infinity to a finite object distance of 58.880 mm, the imaging optical lens assembly is transitioned from the first state to the second state, the axial distance D1 between the image-side surface of the first lens element E1 and the object-side surface of the second lens element E2 decreases from 3.400 mm in the first state to 0.962 mm in the second state, and the axial distance D2 between the image-side surface of the fourth lens element E4 and the diaphragm S3 increases from 0.580 mm in the first state to 3.018 mm in the second state. In other words, as the object distance decreases, the movable group Gm is moved along the optical axis toward the object side during the focus adjustment operation. TABLE 5C Aspherical coefficients Surface # 4 5 6 7 k = 0,0000E+00 0,0000E+00 0,0000E+00 0,0000E+00 A4 = -7,08900609E-06 -7,28591927E-05 -5,47748033E-05 -1,54089379E-03 A6 = 7,58658552E-07 1,10235577E-06 -4,32251861E-04 3,47231323E-03 A8 = -1,77956388E-08 -3,56244444E-08 -2,99557579E-04 -5,24240774E-03 A10 = 7,41712273E-10 2,45848895E-09 2,13678915E-04 3,61396070E-03 A12 = 1,76359087E-11 -3,65701156E-11 -9,08614400E-05 -1,66166609E-03 A14 = - - 2,75484539E-05 5,50079015E-04 A16 = - - -6,04240716E-06 -1,34752430E-04 A18 = - - 9,44664548E-07 2,45968224E-05 A20 = - - -1,00945881E-07 -3,32643574E-06 A22 = - - 6,71272729E-09 3,28055548E-07 A24 = - - -2,02522687E-10 -2,29260735E-08 A26 = - - -4,46783416E-12 1,07813766E-09 A28 = - - 5,44756583E-13 -3,07399702E-11 A30 = - - -1,24417685E-14 4,04002401E-13 Surface # 8 9 11 12 k = 0,0000E+00 0,0000E+00 0,0000E+00 0,0000E+00 A4 = -8,75187519E-03 -9,76566035E-03 -1,13312601E-03 1,79668200E-03 A6 = 5,08248594E-03 5,11797003E-04 2,38159638E-04 -2,80973597E-04 A8 = -5,82686427E-03 -7,56139668E-04 -9,26784363E-04 5,71397453E-04 A10 = 3,74432049E-03 2,35467590E-04 6,84962282E-04 -5,46837462E-04 A12 = -1,56498511E-03 1,23354376E-04 -3,20028551E-04 3,47883393E-04 A14 = 4,55026521E-04 -1,48669951E-04 1,01665987E-04 -1,49866228E-04 A16 = -9,40495125E-05 7,13132599E-05 -2,15183468E-05 4,44311570E-05 A18 = 1,37603070E-05 -2,09360932E-05 2,95120729E-06 -9,06509253E-06 A20 = -1,38999351E-06 4,09481333E-06 -2,50654871E-07 1,24917931E-06 A22 = 9,19722554E-08 -5,45572722E-07 1,19613027E-08 -1,10940904E-07 A24 = -3,57822260E-09 4,91145188E-08 -2,45146506E-10 5,72664479E-09 A26 = 6,19098901E-11 -2,86927369E-09 - -1,30426231E-10 A28 = - 9,85368964E-11 - - A30 = - -1,51479847E-12 - - Surface # 14 15 16 17 k = 0,0000E+00 0,0000E+00 0,0000E+00 0,0000E+00 A4 = 7,88448934E-02 7,14406109E-02 1,20734551E-02 1,49950758E-02 A6 = -3,08331001E-02 -2,66674758E-02 -1,78126418E-02 -2,63134180E-02 A8 = 1,20415473E-02 7,69150151E-03 9,26837396E-03 1,52509168E-02 A10 = -3,97555505E-03 -1,09547193E-03 -4,32580374E-03 -6,61061964E-03 A12 = 1,10122637E-03 -3,25752663E-04 1,62263103E-03 2,29795929E-03 A14 = -2,50160584E-04 2,83071662E-04 -4,17167781E-04 -6,49635588E-04 A16 = 4,53396123E-05 -1,03472960E-04 4,56278774E-05 1,49236977E-04 A18 = -6,24027939E-06 2,40332283E-05 1,34909187E-05 -2,75094879E-05 A20 = 6,03710843E-07 -3,72394276E-06 -7,74414087E-06 3,96727115E-06 A22 = -3,60449298E-08 3,73598036E-07 1,86822364E-06 -4,31480372E-07 A24 = 9,89000148E-10 -2,19739477E-08 -2,69469662E-07 3,37170839E-08 A26 = - 5,75418758E-10 2,39063850E-08 -1,76687437E-09 A28 = - - -1,20780083E-09 5,51135077E-11 A30 = - - 2,66885509E-11 -7,67709477E-13 Surface # 18 19 k = 0,0000E+00 0,0000E+00 A4 = -3,18076403E-03 -1,04782402E-02 A6 = -9,32142812E-03 2,31382510E-03 A8 = 6,92283864E-03 -5,74337583E-04 A10 = -2,82091173E-03 1,88034101E-04 A12 = 8,19170287E-04 -6,13075898E-05 A14 = -1,82808778E-04 1,52981136E-05 A16 = 3,17827194E-05 -2,76471405E-06 A18 = -4,26719801E-06 3,57909310E-07 A20 = 4,35164709E-07 -3,27613807E-08 A22 = -3,29487584E-08 2,06671447E-09 A24 = 1,78989367E-09 -8,55875831E-11 A26 = -6,58474657E-11 2,11194639E-12 A28 = 1,46754573E-12 -2,45750065E-14 A30 = -1,49467747E-14 4,09030069E-17

[0192] In the 5th embodiment, the equation of the aspherical surface profiles of the aforementioned lens elements is the same as the equation of the 1st embodiment. The definitions of these parameters, shown in Table 5D below, are also the same as those given in the 1st embodiment, with corresponding values ​​for the 5th embodiment; therefore, explanations will not be repeated.

[0193] In addition, these parameters from Table 5A to Table 5C can be calculated as the following values ​​and satisfy the following conditions: TABLE 5D Values ​​of optical and physical parameters / definitions fL [mm] 16,67 fL / fS 1,37 FnoL 1,80 TL / fL 1,23 HFOVL [degree] 17,2 TL / ImgH 4,26 FOVL [degree] 34,4 fL / f234 1,24 Dr3i / BL (first state) 2,08 f1 / f2 -0,88 T12 / f+T12 / BL (first state) 0,61 (f4+f5) / f1 -0,03 T12 / CT1 (first state) 2,04 (|R8|+|R10|) / fL 1,03 T56 / CT1 (first state) 0,77 R10 / R1 -0,67 T34 / T45 (first state) 0,27 R6 / R3 0,56 fS [mm] 12,15 R6 / R8 -0,37 FnoS 2,93 ΣCT / ΣAT 1,31 HFOVS [degree] 14,2 10×(CT5+CT6) / f6 -0,19 FOVS [degrees] 28,4 CT6 / CT7 0,53 Dr3i / BL (second state) 2,39 ΣETL / ΣCT 0,84 T12 / f+T12 / BL (second state) 0,20 ET6L / CT6 1,32 T12 / CT1 (second state) 0,58 ET7L / CT7 0,63 T56 / CT1 (second state) 0,77 Y7R1L / Y6R2L 1,18 T34 / T45 (second state) 0,07 SAG7R1L / SAG7R2L 2,15 6. Embodiment

[0194] Fig. 16 is a schematic view of an image acquisition unit in a first state and a second state according to the 6th embodiment of the present disclosure. Fig.17 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit in the first state according to the 6th embodiment. Fig. Fig. 18 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit in the second state according to the 6th embodiment. In Fig.16, the image acquisition unit 6 includes the imaging optical lens assembly (the reference numeral of which is omitted) of the present disclosure and an image sensor IS. The imaging optical lens assembly includes, in order from an object side to an image side along an optical path, a first reflective element E8, a stop S1, a first lens element E1, a stop S2, a second lens element E2, a third lens element E3, a fourth lens element E4, a stop S3, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, a second reflective element E9, a filter E10, and an image surface IMG. Further, the imaging optical lens assembly has a movable group Gm, and the movable group Gm includes the stop S2, the second lens element E2, the third lens element E3, the fourth lens element E4, the stop S3, and the fifth lens element E5.The imaging optical lens assembly includes seven lens elements (E1, E2, E3, E4, E5, E6, and E7), with no additional lens element disposed between each of the seven adjacent lens elements. Furthermore, no additional lens element is disposed between the first lens element E1 and the first reflective element E8 along an optical axis, and no additional lens element is disposed between the seventh lens element E7 and the second reflective element E9 along the optical axis.

[0195] When an imaged object is placed at an infinite object distance, the optical lens assembly for imaging is in the first state as shown in the upper part of Fig. 16. When an imaged object is located at a finite object distance, the optical lens assembly for imaging is in the second state, as shown in the lower part of Fig.16. When an imaged object is moved from an infinite object distance to a finite object distance, the movable group Gm is moved along the optical axis for focus adjustment, and the imaging optical lens assembly is transferred from the first state to the second state. Conversely, when an imaged object is moved from a finite object distance to an infinite object distance, the movable group Gm is moved along the optical axis for focus adjustment, and the imaging optical lens assembly is transferred from the second state to the first state. Specifically, the movable group Gm is moved along the optical axis toward the object side during the focus adjustment process when the imaging optical lens assembly is transferred from the first state to the second state. It should be noted that all elements (e.g.,the diaphragm, the lens element and / or the aperture stop) in the movable group Gm are immobile relative to each other during the focus adjustment process.

[0196] The first reflective element E8 is made of glass and arranged along the optical path between an imaged object and the first lens element E1. It does not affect the focal length of the optical lens assembly for imaging. The first reflective element E8 is a prism with a beam path deflection function.

[0197] The first lens element E1 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The first lens element E1 is made of glass material and has both the object-side surface and the image-side surface aspherical. The object-side surface of the first lens element E1 has an inflection point. The image surface of the first lens element E1 has an inflection point.

[0198] The second lens element E2 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The second lens element E2 is made of plastic material and has both the object-side and image-side surfaces aspherical. The object-side surface of the second lens element E2 has an inflection point.

[0199] The third lens element E3 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The third lens element E3 is made of plastic material and has the object-side surface and the image-side surface both aspherical. The object-side surface of the third lens element E3 has two inflection points. The image-side surface of the third lens element E3 has one inflection point. The object-side surface of the third lens element E3 has a critical point in an off-axis region thereof. The image-side surface of the third lens element E3 has a critical point in an off-axis region thereof.

[0200] The fourth lens element E4 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has both the object-side surface and the image-side surface aspherical. The image-side surface of the fourth lens element E4 has three inflection points. The image-side surface of the fourth lens element E4 has a critical point in an off-axis region thereof.

[0201] The fifth lens element E5 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The fifth lens element E5 is made of plastic material and has the object-side surface and the image-side surface both aspherical. The object-side surface of the fifth lens element E5 has an inflection point. The image-side surface of the fifth lens element E5 has an inflection point. The object-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof. The image-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof.

[0202] The sixth lens element E6 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has both the object-side surface and the image-side surface aspherical. The object-side surface of the sixth lens element E6 has an inflection point. The image-side surface of the sixth lens element E6 has an inflection point.

[0203] The seventh lens element E7 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The seventh lens element E7 is made of plastic material and has the object-side surface and the image-side surface both aspherical. The object-side surface of the seventh lens element E7 has an inflection point. The image-side surface of the seventh lens element E7 has an inflection point. The object-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof. The image-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof.

[0204] The second reflective element E9 is made of glass material and is arranged along the optical path between the seventh lens element E7 and the image surface IMG. It does not affect the focal length of the optical lens assembly for imaging. The second reflective element E9 is a prism with a beam path deflection function. To simplify the illustration, Fig.16, the deflection effect on the beam path caused by the first reflective element E8 and the second reflective element E9 is not shown. However, the first reflective element E8 and the second reflective element E9 can have different configurations depending on the actual design requirements, whereby different deflection effects on the beam path can be achieved. In addition, the first reflective element E8 and the second reflective element E9 of this embodiment can each have a configuration that, for example, corresponds to one of the configurations shown in Fig. 37 and Fig. 38 shown configurations, which can be accessed with reference to the above descriptions Fig. 37 and Fig. 38, without repeating the details in this regard.

[0205] The filter E10 is made of glass and is located between the second reflective element E9 and the image surface IMG. It does not affect the focal length of the imaging optical lens assembly. The image sensor IS is located on or near the image surface IMG of the imaging optical lens assembly.

[0206] The detailed optical data of the sixth embodiment are shown in Table 6A and Table 6B, and the data of the aspherical surfaces are shown in Table 6C below. TABLE 6A 6. Embodiment Surface# radius of curvature thickness material index Abbé # focal length 0 object Plano D0 1 Prism 1 Plano 7,800 Glass 1,847 23,8 - 2 Plano 2,700 3 aperture Plano -1,259 4 Lens 1 7,9542 (ASP) 1,166 Glass 1,567 42,8 36,22 5 12,2894 (ASP) D1 6 aperture Plano -1,000 7 Lens 2 5,9162 (ASP) 2,453 plastic 1,544 56,0 8,41 8 -17,2775 (ASP) 0,050 9 Lens 3 16,9429 (ASP) 0,527 plastic 1,686 18,4 -9,35 10 4,5953 (ASP) 0,271 11 Lens 4 21,6607 (ASP) 0,636 plastic 1,697 16,3 14,67 12 -19,1544 (ASP) 0,152 13 aperture Plano 0,148 14 Lens 5 -3,2054 (ASP) 0,400 plastic 1,587 28,3 -41,24 15 -3,8649 (ASP) D2 16 Lens 6 9,9781 (ASP) 0,476 plastic 1,544 56,0 -17,34 17 4,7678 (ASP) 1,867 18 Lens 7 15,7537 (ASP) 1,347 plastic 1,614 25,6 -87,26 19 11,7767 (ASP) 0,270 20 Prism 2 Plano 6,000 Glass 1,847 23,8 - 21 Plano 0,150 22 filter Plano 0,210 Glass 1,517 64,2 - 23 Plano 0,146 24 Picture Plano - Note: Reference wavelength is 587.6 nm (d-line). An effective radius of the aperture S1 (surface 3) is 5,000 mm. An effective radius of the aperture S2 (surface 6) is 3.565 mm. An effective radius of the aperture S3 (area 13) is 3.062 mm. The optical lens assembly for imaging may further comprise an aperture stop, wherein the position of the aperture stop can be adjusted depending on the object distance or depending on the arrangement of the front reflective element (the first reflective element) or the trimmed edge(s) of the lens element(s).

[0207] In this embodiment, an axial distance between the image-side surface of the fifth lens element E5 and the object-side surface of the sixth lens element E6 is D2. The values ​​of the object distances D0, D1, and D2 may change depending on whether the optical lens assembly is in the first state for imaging or the second state for focus adjustment (as shown in Table 6B below). Except for the above definition of D2 in this paragraph, the definitions of the parameters shown in Table 6B are the same as those given in the first embodiment, with corresponding values ​​for the sixth embodiment; therefore, no further explanations will be given. TABLE 6B Values ​​of optical and physical parameters / definitions First state (infinite object distance) Second state (finite object distance) fL [mm] 17,1 fS [mm] 13,22 FnoL 1,88 FnoS 2,43 HFOVL [degree] 16,6 HFOVS [degree] 14,2 Object distance [mm] ∞ Object distance [mm] 74,241 D0 [mm] ∞ D0 [mm] 65,000 D1 [mm] 6,237 D1 [mm] 3,737 D2 [mm] 0,986 D2 [mm] 3,486

[0208] It should be understood that only two movable focus states (i.e., the first state and the second state) are disclosed in this embodiment, but the present disclosure is not limited thereto. In addition to the first state and the second state, the imaging optical lens assembly in this embodiment may also have other movable focus states with different focal lengths between the first state and the second state to accommodate focusing conditions for different object distances.

[0209] In Table 6B, the movable group Gm of the imaging optical lens assembly is moved according to the change in the object distance for focus adjustment. For example, when an imaged object is moved from an infinite object distance to a finite object distance, the movable group Gm for focus adjustment is moved along the optical axis toward the object side, so that the imaging optical lens assembly is transferred from the first state to the second state.Specifically, when the object distance changes from infinity to a finite object distance of 74.241 mm, the optical lens assembly for imaging is transferred from the first state to the second state, the axial distance D1 between the image-side surface of the first lens element E1 and the diaphragm S2 decreases from 6.237 mm in the first state to 3.737 mm in the second state, and the axial distance D2 between the image-side surface of the fifth lens element E5 and the object-side surface of the sixth lens element E6 increases from 0.986 mm in the first state to 3.486 mm in the second state. In other words, as the object distance decreases, the movable group Gm is moved along the optical axis toward the object side during the focus adjustment operation. TABLE 6C Aspherical coefficients Surface # 4 5 7 8 k = 0,0000E+00 0,0000E+00 0,0000E+00 0,0000E+00 A4 = -1,57730572E-04 -1,73695853E-04 -2,66394657E-04 -2,16891943E-02 A6 = 2,58243430E-05 7,13872970E-06 -1,35463622E-05 3,14439069E-02 A8 = -1,55487283E-05 -8,47774025E-06 -3,20583052E-05 -2,36152723E-02 A10 = 4,59325546E-06 2,92696606E-06 2,40602315E-05 1,13781843E-02 A12 = -8,77593250E-07 -6,21411012E-07 -1,08094779E-05 -3,86764889E-03 A14 = 1,14115449E-07 8,89333748E-08 3,15036580E-06 9,67553078E-04 A16 = -1,03635941E-08 -8,87897682E-09 -6,19795428E-07 -1,81436073E-04 A18 = 6,63292415E-10 6,24691436E-10 8,38734304E-08 2,56264118E-05 A20 = -2,97671229E-11 -3,08053606E-11 -7,82724512E-09 -2,71116984E-06 A22 = 9,16214100E-13 1,04068257E-12 4,94975099E-10 2,11329642E-07 A24 = -1,84196137E-14 -2,29203312E-14 -2,02499987E-11 -1,17609095E-08 A26 = 2,17910688E-16 2,96316288E-16 4,83138659E-13 4,41520208E-10 A28 = -1,15120132E-18 -1,70541083E-18 -5,09479115E-15 -1,00052988E-11 A30 = - - - 1,03247446E-13 Surface # 9 10 11 12 k = 0,0000E+00 0,0000E+00 0,0000E+00 0,0000E+00 A4 = -3,54094218E-02 -2,18385291E-02 9,33986841E-03 2,34931583E-02 A6 = 3,18182220E-02 3,45066231E-03 -1,21106362E-02 -1,57514003E-02 A8 = -1,96780778E-02 2,28214950E-03 6,19371845E-03 5,68946860E-03 A10 = 8,00655858E-03 -2,57087735E-03 -2,01005287E-03 -1,48972638E-03 A12 = -2,26491894E-03 1,33847926E-03 5,30811608E-04 3,02149975E-04 A14 = 4,55405818E-04 -4,36165806E-04 -1,19850766E-04 -3,80530581E-05 A16 = -6,53476670E-05 9,44663484E-05 2,06209690E-05 -5,84533804E-07 A18 = 6,63100517E-06 -1,39818007E-05 -2,41049308E-06 1,29399692E-06 A20 = -4,64051497E-07 1,42627848E-06 1,76297467E-07 -2,47152464E-07 A22 = 2,12806873E-08 -9,89858472E-08 -7,23435267E-09 2,31134176E-08 A24 = -5,75031466E-10 4,47622205E-09 1,26900438E-10 -1,10923785E-09 A26 = 6,93550484E-12 -1,19212613E-10 - 2,18095348E-11 A28 = - 1,42131595E-12 - - Surface # 14 15 16 17 k = 0,0000E+00 0,0000E+00 0,0000E+00 0,0000E+00 A4 = 4,68802655E-02 2,65073929E-02 -3,40029053E-03 -3,87986724E-03 A6 = -2,05055902E-02 -7,84776496E-03 3,38274788E-04 1,32486901E-04 A8 = 1,10945045E-02 4,97085375E-03 -8,18793559E-05 2,93836948E-04 A10 = -4,40157254E-03 -1,91315694E-03 7,46051734E-05 -2,84104085E-04 A12 = 1,37222087E-03 6,31094844E-04 -8,61304005E-05 1,33512849E-04 A14 = -3,20719892E-04 -1,83516972E-04 5,49875440E-05 -3,81652966E-05 A16 = 5,28084089E-05 4,23079819E-05 -2,15378476E-05 6,76950833E-06 A18 = -5,86993761E-06 -7,21141652E-06 5,60227061E-06 -6,50125869E-07 A20 = 4,19217357E-07 8,63531347E-07 -1,00253867E-06 1,65973577E-09 A22 = -1,74088387E-08 -6,79370509E-08 1,24320264E-07 8,48214527E-09 A24 = 3,20480597E-10 3,12455909E-09 -1,05079830E-08 -1,17775525E-09 A26 = - -6,32715323E-11 5,77828221E-10 8,06781063E-11 A28 = - - -1,86340986E-11 -2,91492518E-12 A30 = - - 2,67333927E-13 4,43594267E-14 Surface # 18 19 k = 0,0000E+00 0,0000E+00 A4 = -2,30344319E-03 -2,86411609E-03 A6 = 4,94732659E-04 -5,60106103E-05 A8 = -4,51385491E-04 7,89535293E-05 A10 = 2,89019487E-04 -3,81506688E-05 A12 = -1,26664127E-04 1,15567908E-05 A14 = 3,90345332E-05 -2,39124149E-06 A16 = -8,63776602E-06 3,50362472E-07 A18 = 1,38796371E-06 -3,71494902E-08 A20 = -1,62208344E-07 2,87462171E-09 A22 = 1,36531671E-08 -1,61357698E-10 A24 = -8,06780654E-10 6,40757449E-12 A26 = 3,17757871E-11 -1,70446746E-13 A28 = -7,49235983E-13 2,71345436E-15 A30 = 7,99941066E-15 -1,94142777E-17

[0210] In the sixth embodiment, the equation of the aspherical surface profiles of the aforementioned lens elements is the same as the equation of the first embodiment. The definitions of these parameters, shown in Table 6D below, are also the same as those given in the first embodiment, with corresponding values ​​for the sixth embodiment; therefore, explanations thereof will not be repeated. Note that the values ​​of Dr3i, f, T12, and T56 may change in some of the following conditions depending on whether the imaging optical lens assembly for focus adjustment is in the first state or the second state.

[0211] In addition, these parameters from Table 6A to Table 6C can be calculated as the following values ​​and satisfy the following conditions: TABLE 6D Values ​​of optical and physical parameters / definitions fL [mm] 17,10 fL / fS 1,29 FnoL 1,88 TL / fL 1,32 HFOVL [degree] 16,6 TL / ImgH 4,34 FOVL [degree] 33,2 fL / f234 1,49 Dr3i / BL (first state) 2,37 f1 / f2 4,30 T12 / f+T12 / BL (first state) 1,08 (f4+f5) / f1 -0,73 T12 / CT1 (first state) 4,49 (|R8|+|R10|) / fL 1,35 T56 / CT1 (first state) 0,85 R10 / R1 -0,49 T34 / T45 (first state) 0,90 R6 / R3 0,78 fS [mm] 13,22 R6 / R8 -0,24 FnoS 2,43 ΣCT / ΣAT 0,80 HFOVS [degree] 14,2 10×(CT5+CT6) / f6 -0,51 FOVS [degrees] 28,4 CT6 / CT7 0,35 Dr3i / BL (second state) 2,74 ΣETL / ΣCT 0,83 T12 / f+T12 / BL (second state) 0,61 ET6L / CT6 2,30 T12 / CT1 (second state) 2,35 ET7L / CT7 0,87 T56 / CT1 (second state) 2,99 Y7R1L / Y6R2L 1,13 T34 / T45 (second state) 0,90 SAG7R1L / SAG7R2L -0,25 7. Embodiment

[0212] Fig.19 is a schematic view of an image acquisition unit in a first state and a second state according to the 7th embodiment of the present disclosure. Fig. 20 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit in the first state according to the 7th embodiment. Fig. Fig. 21 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit in the second state according to the 7th embodiment. In Fig.19, the image acquisition unit 7 includes the imaging optical lens assembly (the reference numeral of which is omitted) of the present disclosure and an image sensor IS. The imaging optical lens assembly includes, in order from an object side to an image side along an optical path, a first reflective element E8, a stop S1, a first lens element E1, a stop S2, a second lens element E2, a third lens element E3, a stop S3, a fourth lens element E4, a stop S4, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, a second reflective element E9, a filter E10, and an image surface IMG. Further, the imaging optical lens assembly includes a movable group Gm, and the movable group Gm includes the stop S2, the second lens element E2, the third lens element E3, the stop S3, and the fourth lens element E4.The imaging optical lens assembly includes seven lens elements (E1, E2, E3, E4, E5, E6, and E7), with no additional lens element disposed between each of the adjacent seven lens elements. Furthermore, no additional lens element is disposed between the first lens element E1 and the first reflective element E8 along an optical axis, and no additional lens element is disposed between the seventh lens element E7 and the second reflective element E9 along the optical axis.

[0213] When an imaged object is placed at an infinite object distance, the optical lens assembly for imaging is in the first state as shown in the upper part of Fig. 19. When an imaged object is located at a finite object distance, the optical lens assembly for imaging is in the second state, as shown in the lower part of Fig.19. When an imaged object is moved from an infinite object distance to a finite object distance, the movable group Gm is moved along the optical axis for focus adjustment, and the imaging optical lens assembly is transferred from the first state to the second state. Conversely, when an imaged object is moved from a finite object distance to an infinite object distance, the movable group Gm is moved along the optical axis for focus adjustment, and the imaging optical lens assembly is transferred from the second state to the first state. Specifically, the movable group Gm is moved toward the object side along the optical axis during the focus adjustment process when the imaging optical lens assembly is transferred from the first state to the second state. It should be noted that all elements (e.g.,the diaphragm, the lens element and / or the aperture stop) in the movable group Gm are immobile relative to each other during the focus adjustment process.

[0214] The first reflective element E8 is made of glass and is arranged along the optical path between an imaged object and the first lens element E1. It does not affect the focal length of the optical lens assembly for imaging. The first reflective element E8 is a prism with a light path deflection function.

[0215] The first lens element E1 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The first lens element E1 is made of glass material and has both the object-side surface and the image-side surface aspherical. The object-side surface of the first lens element E1 has an inflection point. The image-side surface of the first lens element E1 has an inflection point.

[0216] The second lens element E2 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The second lens element E2 is made of plastic material and has both the object-side surface and the image-side surface aspherical. The object-side surface of the second lens element E2 has an inflection point. The image-side surface of the second lens element E2 has an inflection point. The image-side surface of the second lens element E2 has a critical point in an off-axis region thereof.

[0217] The third lens element E3 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The third lens element E3 is made of plastic material and has both the object-side and image-side surfaces aspherical. The object-side surface of the third lens element E3 has an inflection point. The image-side surface of the third lens element E3 has an inflection point.

[0218] The fourth lens element E4 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has both the object-side surface and the image-side surface aspherical. The object-side surface of the fourth lens element E4 has two inflection points. The image-side surface of the fourth lens element E4 has one inflection point. The object-side surface of the fourth lens element E4 has two critical points in an off-axis region thereof.

[0219] The fifth lens element E5 with negative refractive power has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The fifth lens element E5 is made of plastic material and has the object-side surface and the image-side surface both aspherical. The object-side surface of the fifth lens element E5 has an inflection point. The image-side surface of the fifth lens element E5 has an inflection point. The object-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof. The image-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof.

[0220] The sixth lens element E6 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has the object-side surface and the image-side surface both aspherical. The object-side surface of the sixth lens element E6 has two inflection points. The image-side surface of the sixth lens element E6 has two inflection points. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof. The image-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof.

[0221] The seventh lens element E7 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The seventh lens element E7 is made of plastic material and has both the object-side surface and the image-side surface aspherical. The object-side surface of the seventh lens element E7 has three inflection points. The image-side surface of the seventh lens element E7 has two inflection points. The image-side surface of the seventh lens element E7 has two critical points in an off-axis region.

[0222] The second reflective element E9 is made of glass and is arranged along the optical path between the seventh lens element E7 and the image surface IMG. It does not affect the focal length of the optical lens assembly for imaging. The second reflective element E9 is a prism with a beam path deflection function. To simplify the illustration, Fig.19, the deflection effect on the beam path caused by the first reflective element E8 and the second reflective element E9 is not shown. However, the first reflective element E8 and the second reflective element E9 can have different configurations depending on the actual design requirements, thereby producing different deflection effects on the beam path. In addition, the first reflective element E8 and the second reflective element E9 of this embodiment can each have a configuration corresponding, for example, to one of the configurations shown in Fig. 37 and Fig. 38 shown configurations, which can be accessed with reference to the above descriptions Fig. 37 and Fig. 38, without repeating the details in this regard.

[0223] The filter E10 is made of glass and is located between the second reflective element E9 and the image surface IMG. It does not affect the focal length of the imaging optical lens assembly. The image sensor IS is located on or near the image surface IMG of the imaging optical lens assembly.

[0224] The detailed optical data of the 7th embodiment are shown in Table 7A and Table 7B, and the data of the aspherical surfaces are shown in Table 7C below. TABLE 7A 7. Embodiment Surface # radius of curvature thickness material index Abbé # focal length 0 object Plano D0 1 Prism 1 Plano 8,350 Glass 1,847 23,8 - 2 Plano 1,775 3 aperture Plano -1,095 4 Lens 1 9,5335 (ASP) 1,394 Glass 1,497 81,6 31,82 5 22,8285 (ASP) D1 6 aperture Plano -0,907 7 Lens 2 7,2475 (ASP) 1,919 plastic 1,544 56,0 14,65 8 72,2385 (ASP) 0,455 9 Lens 3 5,8188 (ASP) 0,430 plastic 1,660 20,4 -21,08 10 3,9821 (ASP) 1,544 11 aperture Plano 0,023 12 Lens 4 99,8749 (ASP) 0,811 plastic 1,544 56,0 16,42 13 -9,7806 (ASP) D2 14 aperture Plano 0,035 15 Lens 5 -4,0259 (ASP) 0,400 plastic 1,566 37,4 -21,20 16 -6,2766 (ASP) 1,252 17 Lens 6 239,0391 (ASP) 0,479 plastic 1,669 19,5 -141,83 18 67,8699 (ASP) 0,256 19 Lens 7 -10,8000 (ASP) 0,450 plastic 1,544 56,0 -20,70 20 -267,6550 (ASP) 0,380 21 Prism 2 Plano 6,900 Glass 1,847 23,8 - 22 Plano 0,270 23 filter Plano 0,210 Glass 1,517 64,2 - 24 Plano 0,593 25 Picture Plano - Note: Reference wavelength is 587.6 nm (d-line). An effective radius of the aperture S1 (surface 3) is 4.916 mm. An effective radius of the aperture S2 (surface 6) is 3.984 mm. An effective radius of the aperture S3 (surface 11) is 3.174 mm. An effective radius of the aperture S4 (area 14) is 2.338 mm. The optical lens assembly for imaging may further comprise an aperture stop, and the position of the aperture stop may be adjusted depending on the object distance or depending on the arrangement of the front reflective element (the first reflective element) or the trimmed edge(s) of the lens element(s).

[0225] In this embodiment, an axial distance between the image-side surface of the fourth lens element E4 and the diaphragm S4 is D2. The values ​​of the object distances D0, D1, and D2 may change depending on whether the optical lens assembly is in the first state for imaging or the second state for focus adjustment (as shown in Table 7B below). Except for the above definition of D2 in this paragraph, the definitions of the parameters shown in Table 7B are the same as those of the first embodiment with corresponding values ​​for the seventh embodiment; therefore, no further explanation will be given. TABLE 7B Values ​​of optical and physical parameters / definitions First state (infinite object distance) Second state (finite object distance) fL [mm] 18,85 fS [mm] 13,25 FnoL 1,93 FnoS 2,37 HFOVL [degree] 16,0 HFOVS [degree] 14,2 Object distance [mm] ∞ Object distance [mm] 69,030 D0 [mm] ∞ D0 [mm] 60,000 D1 [mm] 4,921 D1 [mm] 2,821 D2 [mm] 0,870 D2 [mm] 2,970

[0226] It should be understood that only two movable focus states (i.e., the first state and the second state) are disclosed in this embodiment, but the present disclosure is not limited thereto. In addition to the first state and the second state, the imaging optical lens assembly in this embodiment may also have other movable focus states with different focal lengths between the first state and the second state to accommodate focusing conditions for different object distances.

[0227] In Table 7B, the movable group Gm of the imaging optical lens assembly is moved according to the change in the object distance for focus adjustment. For example, when an imaged object is moved from an infinite object distance to a finite object distance, the movable group Gm for focus adjustment is moved along the optical axis toward the object side, so that the imaging optical lens assembly is transferred from the first state to the second state.Specifically, when the object distance changes from an infinite object distance to a finite object distance of 69.030 mm, the optical lens assembly for imaging is transferred from the first state to the second state, the axial distance D1 between the image-side surface of the first lens element E1 and the diaphragm S2 decreases from 4.921 mm in the first state to 2.821 mm in the second state, and the axial distance D2 between the image-side surface of the fourth lens element E4 and the diaphragm S4 increases from 0.870 mm in the first state to 2.970 mm in the second state. In other words, as the object distance decreases, the movable group Gm is moved toward the object side along the optical axis during the focus adjustment operation. TABLE 7C Aspherical coefficients Surface # 4 5 7 8 k = 0,0000E+00 0,0000E+00 0,0000E+00 0,0000E+00 A4 = -1,15737569E-04 -1,28724923E-04 -1,69408663E-05 1,01768254E-03 A6 = 1,24877526E-05 -9,02998222E-06 4,62407599E-05 -1,47337412E-04 A8 = -9,76335358E-06 3,46005423E-06 -8,28052347E-05 8,44293898E-05 A10 = 3,97143467E-06 -8,98389326E-07 5,56924699E-05 -6,43814463E-05 A12 = -1,04647171E-06 1,05291449E-07 -2,42771325E-05 2,62388771E-05 A14 = 1,85284890E-07 2,02954191E-10 7,11892843E-06 -7,10917013E-06 A16 = -2,28231322E-08 -1,96001593E-09 -1,45860974E-06 1,36909017E-06 A18 = 1,99441437E-09 3,18384141E-10 2,12910440E-07 -1,91450203E-07 A20 = -1,24423106E-10 -2,81655952E-11 -2,22636784E-08 1,94940865E-08 A22 = 5,50204470E-12 1,58827863E-12 1,65462855E-09 -1,42919540E-09 A24 = -1,68365946E-13 -5,86360485E-14 -8,52703389E-11 7,33514574E-11 A26 = 3,38861176E-15 1,37684345E-15 2,89458709E-12 -2,49518083E-12 A28 = -4,03305280E-17 -1,86980531E-17 -5,81673924E-14 5,04101965E-14 A30 = 2,14952981E-19 1,11938150E-19 5,23820091E-16 -4,56826982E-16 Surface # 9 10 12 13 k = 0,0000E+00 0,0000E+00 0,0000E+00 0,0000E+00 A4 = -8,24441822E-03 -1,12542053E-02 -1,23084555E-03 -1,37199308E-04 A6 = 5,80766699E-04 5,49464815E-04 -2,01328421E-04 -1,37533891E-04 A8 = 1,09222476E-04 3,33443572E-04 1,35638327E-04 8,59921535E-05 A10 = -1,24610627E-04 -3,35968156E-04 -7,71670958E-05 -3,78951625E-05 A12 = 4,80200648E-05 1,66737664E-04 3,47322244E-05 1,60897013E-05 A14 = -1,13647559E-05 -5,61915582E-05 -1,06792049E-05 -4,64748820E-06 A16 = 1,79415922E-06 1,36226985E-05 2,11887908E-06 7,70950065E-07 A18 = -1,89620376E-07 -2,42287004E-06 -2,64748498E-07 -5,50867804E-08 A20 = 1,30744179E-08 3,17735710E-07 2,01720511E-08 -2,28015539E-09 A22 = -5,55781430E-10 -3,04289262E-08 -8,55569557E-10 7,21721797E-10 A24 = 1,29410464E-11 2,06796772E-09 1,54193450E-11 -4,95328206E-11 A26 = -1,21675349E-13 -9,41933597E-11 - 1,17622905E-12 A28 = - 2,56780469E-12 - - A30 = - -3,15311733E-14 - - Surface # 15 16 17 18 k = 0,0000E+00 0,0000E+00 0,0000E+00 0,0000E+00 A4 = 5,47196547E-02 5,58086239E-02 5,29718521E-03 -7,26164844E-04 A6 = -1,28437716E-02 -1,28796921E-02 -7,07476546E-03 -7,57761555E-03 A8 = 2,19729262E-03 4,64564421 E-03 -1,55665394E-03 6,29881316E-03 A10 = 7,02690642E-05 -4,09253242E-03 7,36640146E-03 -4,77171865E-03 A12 = -2,09803491E-04 3,41312716E-03 -9,31983559E-03 2,33389090E-03 A14 = 8,20850700E-05 -1,91945345E-03 7,08735305E-03 -6,37238822E-04 A16 = -1,90557626E-05 7,25387460E-04 -3,60918629E-03 4,56513209E-05 A18 = 2,91947955E-06 -1,85977374E-04 1,28055548E-03 3,25809979E-05 A20 = -2,90854033E-07 3,19673435E-05 -3,20946007E-04 -1,38791060E-05 A22 = 1,71428727E-08 -3,52937667E-06 5,65893626E-05 2,83815691E-06 A24 = -4,53739689E-10 2,26235808E-07 -6,86096954E-06 -3,51099054E-07 A26 = - -6,39958372E-09 5,43774403E-07 2,66785925E-08 A28 = - - -2,53240573E-08 -1,14898858E-09 A30 = - - 5,24545357E-10 2,15007456E-11 Surface # 19 20 k = 0,0000E+00 0,0000E+00 A4 = -5,26048510E-03 -4,31434489E-03 A6 = 3,20199330E-03 4,19339541E-03 A8 = 2,58257953E-03 -1,77207824E-03 A10 = -4,18858467E-03 5,61262270E-04 A12 = 2,93109002E-03 -1,33181552E-04 A14 = -1,29512422E-03 1,86103415E-05 A16 = 3,92237147E-04 -3,37192106E-07 A18 = -8,41927093E-05 -4,33547587E-07 A20 = 1,29594077E-05 9,75718568E-08 A22 = -1,42294979E-06 -1,15107607E-08 A24 = 1,08807750E-07 8,42674671E-10 A26 = -5,50211881E-09 -3,83635042E-11 A28 = 1,65228192E-10 9,95855218E-13 A30 = -2,22891260E-12 -1,12435832E-14

[0228] In the 7th embodiment, the equation of the aspherical surface profiles of the aforementioned lens elements is the same as the equation of the 1st embodiment. The definitions of these parameters, shown in Table 7D below, are also the same as those given in the 1st embodiment, with corresponding values ​​for the 7th embodiment; therefore, explanations will not be repeated.

[0229] In addition, these parameters can be calculated from Tables 7A to 7C as the following values ​​and satisfy the following conditions: TABLE 7D Values ​​of optical and physical parameters / definitions fL [mm] 18,85 fL / fS 1,42 FnoL 1,93 TL / fL 1,20 HFOVL [degree] 16,0 TL / ImgH 4,15 FOVL [degree] 32,0 fL / f234 1,44 Dr3i / BL (first state) 2,07 f1 / f2 2,17 T12 / f+T12 / BL (first state) 0,69 (f4+f5) / f1 -0,15 T12 / CT1 (first state) 2,88 (|R8|+|R10|) / fL 0,85 T56 / CT1 (first state) 0,90 R10 / R1 -0,66 T34 / T45 (first state) 1,73 R6 / R3 0,55 fS [mm] 13,25 R6 / R8 -0,41 FnoS 2,37 ΣCT / ΣAT 0,70 HFOVS [degree] 14,2 10×(CT5+CT6) / f6 -0,06 FOVS [degrees] 28,4 CT6 / CT7 1,06 Dr3i / BL (second state) 2,32 ΣETL / ΣCT 0,73 T12 / f+T12 / BL (second state) 0,37 ET6L / CT6 0,88 T12 / CT1 (second state) 1,37 ET7L / CT7 1,06 T56 / CT1 (second state) 0,90 Y7R1L / Y6R2L 1,12 T34 / T45 (second state) 0,52 SAG7R1L / SAG7R2L 1,08 8. Embodiment

[0230] Fig. 22 is a schematic view of an image acquisition unit in a first state and a second state according to the 8th embodiment of the present disclosure. Fig.23 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit in the first state according to the 8th embodiment. Fig. Fig. 24 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit in the second state according to the 8th embodiment. In Fig.22, the image acquisition unit 8 includes the imaging optical lens assembly (the reference numeral of which is omitted) of the present disclosure and an image sensor IS. The imaging optical lens assembly includes, in order from an object side to an image side along an optical path, a first reflective element E8, a stop S1, a first lens element E1, a stop S2, a second lens element E2, a third lens element E3, a stop S3, a fourth lens element E4, a stop S4, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, a second reflective element E9, a filter E10, and an image surface IMG. Further, the imaging optical lens assembly has a movable group Gm, and the movable group Gm includes the stop S2, the second lens element E2, the third lens element E3, the stop S3, and the fourth lens element E4.The imaging optical lens assembly includes seven lens elements (E1, E2, E3, E4, E5, E6, and E7), with no additional lens element disposed between each of the seven adjacent lens elements. Additionally, no additional lens element is disposed between the first lens element E1 and the first reflective element E8 along an optical axis, and no additional lens element is disposed between the seventh lens element E7 and the second reflective element E9 along the optical axis.

[0231] When an imaged object is placed at an infinite object distance, the optical lens assembly for imaging is in the first state as shown in the upper part of Fig. 22. When an imaged object is located at a finite object distance, the optical lens assembly for imaging is in the second state, as shown in the lower part of Fig.22. When an imaged object is moved from an infinite object distance to a finite object distance, the movable group Gm is moved along the optical axis for focus adjustment, and the imaging optical lens assembly is transferred from the first state to the second state. Conversely, when an imaged object is moved from a finite object distance to an infinite object distance, the movable group Gm is moved along the optical axis for focus adjustment, and the imaging optical lens assembly is transferred from the second state to the first state. Specifically, the movable group Gm is moved along the optical axis toward the object side during the focus adjustment process when the imaging optical lens assembly is transferred from the first state to the second state. It should be noted that all elements (e.g.,the diaphragm, the lens element and / or the aperture stop) in the movable group Gm are immobile relative to each other during the focusing process.

[0232] The first reflective element E8 is made of glass and is arranged along the optical path between an imaged object and the first lens element E1. It does not affect the focal length of the optical lens assembly for imaging. The first reflective element E8 is a prism with a light path deflection function.

[0233] The first lens element E1 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The first lens element E1 is made of glass material and has both the object-side surface and the image-side surface spherical.

[0234] The second lens element E2 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The second lens element E2 is made of plastic material and has the object-side surface and the image-side surface both aspherical. The object-side surface of the second lens element E2 has one inflection point. The image-side surface of the second lens element E2 has two inflection points. The object-side surface of the second lens element E2 has a critical point in an off-axis region thereof. The image-side surface of the second lens element E2 has a critical point in an off-axis region thereof.

[0235] The third lens element E3 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The third lens element E3 is made of plastic material and has the object-side surface and the image-side surface both aspherical. The object-side surface of the third lens element E3 has two inflection points. The image-side surface of the third lens element E3 has one inflection point. The object-side surface of the third lens element E3 has a critical point in an off-axis region thereof. The image-side surface of the third lens element E3 has a critical point in an off-axis region thereof.

[0236] The fourth lens element E4 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has both the object-side surface and the image-side surface aspherical. The object-side surface of the fourth lens element E4 has two inflection points. The image-side surface of the fourth lens element E4 has one inflection point. The object-side surface of the fourth lens element E4 has two critical points in an off-axis region thereof.

[0237] The fifth lens element E5 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The fifth lens element E5 is made of plastic material and has the object-side surface and the image-side surface both aspherical. The object-side surface of the fifth lens element E5 has an inflection point. The image-side surface of the fifth lens element E5 has an inflection point. The object-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof. The image-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof.

[0238] The sixth lens element E6 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has the object-side surface and the image-side surface both aspherical. The object-side surface of the sixth lens element E6 has two inflection points. The image-side surface of the sixth lens element E6 has two inflection points. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof. The image-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof.

[0239] The seventh lens element E7 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The seventh lens element E7 is made of plastic material and has both the object-side surface and the image-side surface aspherical. The object-side surface of the seventh lens element E7 has three inflection points. The image-side surface of the seventh lens element E7 has two inflection points. The image-side surface of the seventh lens element E7 has two critical points in an off-axis region thereof.

[0240] The second reflective element E9 is made of glass and is arranged along the optical path between the seventh lens element E7 and the image surface IMG. It does not affect the focal length of the optical lens assembly for imaging. The second reflective element E9 is a prism with a beam path deflection function. To simplify the illustration, Fig.22, the deflection effect on the beam path caused by the first reflective element E8 and the second reflective element E9 is not shown. However, the first reflective element E8 and the second reflective element E9 can have different configurations depending on the actual design requirements, thereby producing different deflection effects on the beam path. In addition, the first reflective element E8 and the second reflective element E9 of this embodiment can each have a configuration corresponding, for example, to one of the configurations shown in Fig. 37 and Fig. 38 shown configurations, which can be accessed with reference to the above descriptions Fig. 37 and Fig. 38, without repeating the details in this regard.

[0241] The filter E10 is made of glass and is located between the second reflective element E9 and the image surface IMG. It does not affect the focal length of the imaging optical lens assembly. The image sensor IS is located on or near the image surface IMG of the imaging optical lens assembly.

[0242] The detailed optical data of the 8th embodiment are shown in Table 8A and Table 8B, and the data of the aspherical surfaces are shown in Table 8C below. TABLE 8A 8. Embodiment Surface # radius of curvature thickness material index Abbé # focal length 0 object Plano D0 1 Prism 1 Plano 8,350 Glass 1,847 23,8 - 2 Plano 2,298 3 aperture Plano -1,618 4 Lens 1 8,2862 (SPH) 2,184 Glass 1,497 81,6 20,07 5 44,6175 (SPH) D1 6 aperture Plano -0,855 7 Lens 2 5,2077 (ASP) 0,961 plastic 1,544 56,0 42,53 8 6,2832 (ASP) 0,920 9 Lens 3 13,0540 (ASP) 0,430 plastic 1,660 20,4 -28,60 10 7,6160 (ASP) 0,812 11 aperture Plano 0,000 12 Lens 4 21,9634 (ASP) 0,916 plastic 1,544 56,0 11,12 13 -8,2257 (ASP) D2 14 aperture Plano 0,142 15 Lens 5 -3,0914 (ASP) 0,400 plastic 1,566 37,4 -16,95 16 -4,7739 (ASP) 1,178 17 Lens 6 244,3416 (ASP) 0,507 plastic 1,669 19,5 -113,95 18 58,0577 (ASP) 0,123 19 Lens 7 -11,2761 (ASP) 0,502 plastic 1,544 56,0 -20,87 20 -1679,5438 (ASP) 0,380 21 Prism 2 Plano 6,900 Glass 1,847 23,8 - 22 Plano 0,180 23 filter Plano 0,210 Glass 1,517 64,2 - 24 Plano 0,716 25 Picture Plano - Note: Reference wavelength is 587.6 nm (d-line). An effective radius of the aperture S1 (surface 3) is 5.126 mm. An effective radius of the aperture S2 (surface 6) is 3.522 mm. An effective radius of the aperture S3 (surface 11) is 3.097 mm. An effective radius of the aperture S4 (area 14) is 2.204 mm. The optical lens assembly for imaging may further comprise an aperture stop, wherein the position of the aperture stop can be adjusted depending on the object distance or depending on the arrangement of the front reflective element (the first reflective element) or the trimmed edge(s) of the lens element(s).

[0243] In this embodiment, an axial distance between the image-side surface of the fourth lens element E4 and the diaphragm S4 is D2. The values ​​of the object distances D0, D1, and D2 may change depending on whether the optical lens assembly is in the first state for imaging or the second state for focus adjustment (as shown in Table 8B below). Except for the above definition of D2 in this paragraph, the definitions of the parameters shown in Table 8B are the same as those of the first embodiment with corresponding values ​​for the eighth embodiment; therefore, no further explanations will be given. TABLE 8B Values ​​of optical and physical parameters / definitions First state (infinite object distance) Second state (finite object distance) fL [mm] 18,95 fS [mm] 12,96 FnoL 1,91 FnoS 2,46 HFOVL [degree] 14,9 HFOVS [degree] 13,8 Object distance [mm] ∞ Object distance [mm] 69,030 D0 [mm] ∞ D0 [mm] 60,000 D1 [mm] 4,424 D1 [mm] 2,324 D2 [mm] 0,721 D2 [mm] 2,821

[0244] It should be understood that only two movable focus states (i.e., the first state and the second state) are disclosed in this embodiment, but the present disclosure is not limited thereto. In addition to the first state and the second state, the imaging optical lens assembly in this embodiment may also have other movable focus states with different focal lengths between the first state and the second state to accommodate focusing conditions for different object distances.

[0245] In Table 8B, the movable group Gm of the imaging optical lens assembly is moved according to the change in the object distance for focus adjustment. For example, when an imaged object is moved from an infinite object distance to a finite object distance, the movable group Gm for focus adjustment is moved along the optical axis toward the object side, so that the imaging optical lens assembly is transferred from the first state to the second state.Specifically, when the object distance changes from an infinite object distance to a finite object distance of 69.030 mm, the optical lens assembly for imaging is transferred from the first state to the second state, the axial distance D1 between the image-side surface of the first lens element E1 and the stop S2 decreases from 4.424 mm in the first state to 2.324 mm in the second state, and the axial distance D2 between the image-side surface of the fourth lens element E4 and the stop S4 increases from 0.721 mm in the first state to 2.821 mm in the second state. In other words, as the object distance decreases, the movable group Gm is moved toward the object side along the optical axis during the focus adjustment operation. TABLE 8C Aspherical coefficients Surface # 7 8 9 10 k = 0,0000E+00 0,0000E+00 0,0000E+00 0,0000E+00 A4 = -1,07396381E-03 -2,48162364E-03 -1,23728122E-02 -1,22715988E-02 A6 = 1,75811728E-04 -1,00987229E-04 1,61608507E-03 1,79684891E-03 A8 = -1,87320003E-04 2,60136807E-04 -6,57595405E-04 -8,33352058E-04 A10 = 8,84121229E-05 -3,05176277E-04 3,39902347E-04 4,75050358E-04 A12 = -2,69426512E-05 1,88173138E-04 -1,37489059E-04 -2,19850639E-04 A14 = 4,83882608E-06 -7,52036922E-05 3,74854123E-05 7,12452956E-05 A16 = -3,66513967E-07 2,04744717E-05 -6,85928840E-06 -1,64655460E-05 A18 = -4,65034244E-08 -3,89368514E-06 8,52382860E-07 2,80370528E-06 A20 = 1,73692024E-08 5,22720204E-07 -7,13892075E-08 -3,55277533E-07 A22 = -2,47867013E-09 -4,93532951E-08 3,86689285E-09 3,30702515E-08 A24 = 2,09117486E-10 3,20727994E-09 -1,22313534E-10 -2,18818267E-09 A26 = -1,08380229E-11 -1,36562322E-10 1,71331720E-12 9,70885619E-11 A28 = 3,19900116E-13 3,42800283E-12 - -2,58368575E-12 A30 = -4,12374099E-15 -3,84209502E-14 - 3,11230550E-14 Surface # 12 13 15 16 k = 0,0000E+00 0,0000E+00 0,0000E+00 0,0000E+00 A4 = -1,02338039E-03 8,00044561E-04 7,89411549E-02 7,90188571E-02 A6 = 2,06409911E-04 -8,35569077E-05 -2,25246967E-02 -2,18199516E-02 A8 = -1,93816262E-04 1,55086278E-04 4,43886532E-03 7,79070409E-03 A10 = 4,53187309E-05 -1,77230286E-04 2,83305063E-04 -6,71286769E-03 A12 = 1,50772199E-05 1,24916051E-04 -5,52194088E-04 6,08387286E-03 A14 = -1,52038781E-05 -5,32881001E-05 1,95310100E-04 -3,71513271E-03 A16 = 4,76188534E-06 1,41235421E-05 -3,62913931E-05 1,50859831E-03 A18 = -7,64950176E-07 -2,38534498E-06 3,46842562E-06 -4,13375370E-04 A20 = 6,79511390E-08 2,58573538E-07 -7,38079257E-08 7,58053767E-05 A22 = -3,17919260E-09 -1,75323585E-08 -1,47790104E-08 -8,92839233E-06 A24 = 6,13114779E-11 6,81498136E-10 9,67497370E-10 6,10903659E-07 A26 = - -1,16638370E-11 - -1,84583473E-08 Surface # 17 18 19 20 k = 0,0000E+00 0,0000E+00 0,0000E+00 0,0000E+00 A4 = 1,82987342E-02 3,88438755E-03 -1,69960851E-02 -1,10308760E-02 A6 = -2,19995529E-02 -1,58158650E-02 9,24979745E-03 9,69317033E-03 A8 = 1,93145226E-02 2,02299266E-02 5,36639619E-03 -4,49116406E-03 A10 = -1,81040233E-02 -1,95232541E-02 -8,61616335E-03 1,60998310E-03 A12 = 1,26120441E-02 1,24991190E-02 5,15375866E-03 -4,62022331 E-04 A14 = -6,13445174E-03 -5,55792526E-03 -1,84150975E-03 1,00280121E-04 A16 = 2,06023359E-03 1,78210101E-03 4,29638399E-04 -1,61551961E-05 A18 = -4,66546597E-04 -4,18388586E-04 -6,68571053E-05 1,92710247E-06 A20 = 6,66839076E-05 7,17312918E-05 6,82347253E-06 -1,68224194E-07 A22 = -4,80512736E-06 -8,82270530E-06 -4,23774593E-07 1,03596693E-08 A24 = -7,81768390E-08 7,52203615E-07 1,19349342E-08 -4,16129057E-10 A26 = 4,56349018E-08 -4,18637965E-08 2,17034185E-10 9,13355178E-12 A28 = -3,37008663E-09 1,35650571E-09 -2,53783632E-11 -5,03462885E-14 A30 = 8,28044966E-11 -1,92353442E-11 5,30440123E-13 -1,12652863E-15

[0246] In the 8th embodiment, the equation of the aspherical surface profiles of the aforementioned lens elements is the same as the equation of the 1st embodiment. The definitions of these parameters, shown in Table 8D below, are also the same as those given in the 1st embodiment, with corresponding values ​​for the 8th embodiment; therefore, explanations will not be repeated.

[0247] In addition, these parameters from Table 8A to Table 8C can be calculated as the following values ​​and satisfy the following conditions: TABLE 8D Values ​​of optical and physical parameters / definitions fL [mm] 18,95 fL / fS 1,46 FnoL 1,91 TL / fL 1,15 HFOVL [degree] 14,9 TL / lmgH 4,25 FOVL [degree] 29,8 fL / f234 1,39 Dr3i / BL (first state) 1,91 f1 / f2 0,47 T12 / f+T12 / BL (first state) 0,61 (f4+f5) / f1 -0,29 T12 / CT1 (first state) 1,63 (|R8|+|R10|) / fL 0,69 T56 / CT1 (first state) 0,54 R10 / R1 -0,58 T34 / T45 (first state) 0,94 R6 / R3 1,46 fS [mm] 12,96 R6 / R8 -0,93 FnoS 2,46 ΣCT / ΣAT 0,79 HFOVS [degree] 13,8 10×(CT5+CT6) / f6 -0,08 FOVS [degrees] 27,6 CT6 / CT7 1,01 Dr3i / BL (second state) 2,16 ΣETL / ΣCT 0,68 T12 / f+T12 / BL (second state) 0,29 ET6L / CT6 0,83 T12 / CT1 (second state) 0,67 ET7L / CT7 1,11 T56 / CT1 (second state) 0,54 Y7R1L / Y6R2L 1,09 T34 / T45 (second state) 0,27 SAG7R1L / SAG7R2L 1,23 9. Embodiment

[0248] Fig. 25 is a schematic view of an image acquisition unit in a first state and a second state according to the 9th embodiment of the present disclosure. Fig.26 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit in the first state according to the 9th embodiment. Fig. Fig. 27 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit in the second state according to the ninth embodiment. In Fig.25, the image acquisition unit 9 includes the imaging optical lens assembly (the reference numeral of which is omitted) of the present disclosure and an image sensor IS. The imaging optical lens assembly includes, in order from an object side to an image side along an optical path, a first reflective element E8, a stop S1, a first lens element E1, a stop S2, a second lens element E2, a third lens element E3, a fourth lens element E4, a stop S3, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, a second reflective element E9, a filter E10, and an image surface IMG. Further, the imaging optical lens assembly has a movable group Gm, and the movable group Gm includes the stop S2, the second lens element E2, the third lens element E3, and the fourth lens element E4.The imaging optical lens assembly includes seven lens elements (E1, E2, E3, E4, E5, E6, and E7), with no additional lens element disposed between each of the adjacent seven lens elements. Furthermore, no additional lens element is disposed between the first lens element E1 and the first reflective element E8 along an optical axis, and no additional lens element is disposed between the seventh lens element E7 and the second reflective element E9 along the optical axis.

[0249] When an imaged object is at an infinite object distance, the optical lens assembly for imaging is in the first state as shown in the upper part of Fig. 25. When an imaged object is located at a finite object distance, the optical lens assembly for imaging is in the second state, as shown in the lower part of Fig.25. When an imaged object is moved from an infinite object distance to a finite object distance, the movable group Gm is moved along the optical axis for focus adjustment, and the imaging optical lens assembly is transferred from the first state to the second state. Conversely, when an imaged object is moved from a finite object distance to an infinite object distance, the movable group Gm is moved along the optical axis for focus adjustment, and the imaging optical lens assembly is transferred from the second state to the first state. Specifically, the movable group Gm is moved along the optical axis toward the object side during the focus adjustment process when the imaging optical lens assembly is transferred from the first state to the second state. It should be noted that all elements (e.g.,the diaphragm, the lens element and / or the aperture stop) in the movable group Gm are immobile relative to each other during the focus adjustment process.

[0250] The first reflective element E8 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is planar in a paraxial region thereof. The first reflective element E8 is made of glass material and arranged along the optical path between an imaged object and the first lens element E1. The first reflective element E8 is a prism with an optical path deflection function.

[0251] The first lens element E1 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The first lens element E1 is made of glass material and has both the object-side surface and the image-side surface aspherical. The object-side surface of the first lens element E1 has an inflection point. The image-side surface of the first lens element E1 has an inflection point.

[0252] The second lens element E2 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The second lens element E2 is made of glass material and has both the object-side and image-side surfaces aspherical. The object-side surface of the second lens element E2 has an inflection point.

[0253] The third lens element E3 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The third lens element E3 is made of plastic material and has the object-side surface and the image-side surface both aspherical. The object-side surface of the third lens element E3 has an inflection point. The image-side surface of the third lens element E3 has an inflection point. The object-side surface of the third lens element E3 has a critical point in an off-axis region thereof. The image-side surface of the third lens element E3 has a critical point in an off-axis region thereof.

[0254] The fourth lens element E4 with positive refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has both the object-side surface and the image-side surface aspherical. The object-side surface of the fourth lens element E4 has an inflection point. The image-side surface of the fourth lens element E4 has an inflection point.

[0255] The fifth lens element E5 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The fifth lens element E5 is made of plastic material and has the object-side surface and the image-side surface both aspherical. The object-side surface of the fifth lens element E5 has an inflection point. The image-side surface of the fifth lens element E5 has an inflection point. The object-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof. The image-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof.

[0256] The sixth lens element E6 with positive refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has both an object-side surface and an image-side surface that are aspherical. The object-side surface of the sixth lens element E6 has an inflection point. The image-side surface of the sixth lens element E6 has an inflection point.

[0257] The seventh lens element E7 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The seventh lens element E7 is made of plastic material and has the object-side surface and the image-side surface both aspherical. The object-side surface of the seventh lens element E7 has two inflection points. The image-side surface of the seventh lens element E7 has one inflection point. The object-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof. The image-side surface of the seventh lens element E7 has a critical point in an off-axis region thereof.

[0258] The second reflective element E9 is made of glass material and is arranged along the optical path between the seventh lens element E7 and the image surface IMG. It does not affect the focal length of the optical lens assembly for imaging. The second reflective element E9 is a prism with a beam path deflection function. To simplify the illustration, Fig.25, the deflection effect on the beam path caused by the first reflective element E8 and the second reflective element E9 is not shown. However, the first reflective element E8 and the second reflective element E9 can have different configurations depending on the actual design requirements, thereby producing different deflection effects on the beam path. In addition, the first reflective element E8 and the second reflective element E9 of this embodiment can each have a configuration corresponding, for example, to one of the configurations shown in Fig. 37 and Fig. 38 shown configurations, which can be accessed with reference to the above descriptions Fig. 37 and Fig. 38, without repeating the details in this regard.

[0259] The filter E10 is made of glass and is located between the second reflective element E9 and the image surface IMG. It does not affect the focal length of the imaging optical lens assembly. The image sensor IS is located on or near the image surface IMG of the imaging optical lens assembly.

[0260] The detailed optical data of the 9th embodiment are shown in Table 9A and Table 9B, and the data of the aspherical surfaces are shown in Table 9C below. TABLE 9A 9. Embodiment Surface # radius of curvature thickness material index Abbé # focal length 0 object Plano D0 1 Prism 1 153,846 8,000 Glass 1,855 36,6 179,84 2 Plano 0,580 3 aperture Plano 0,100 4 Lens 1 9,5402 (ASP) 0,854 Glass 1,517 64,2 53,41 5 14,1342 (ASP) D1 6 aperture Plano -1,250 7 Lens 2 6,5867 (ASP) 2,423 Glass 1,517 64,2 10,75 8 -30,9824 (ASP) 0,302 9 Lens 3 33,3283 (ASP) 0,378 plastic 1,697 16,3 -24,91 10 11,3636 (ASP) 1,996 11 Lens 4 -9,5563 (ASP) 0,513 plastic 1,566 37,4 36,60 12 -6,6667 (ASP) D2 13 aperture Plano 0,000 14 Lens 5 -4,1182 (ASP) 0,400 plastic 1,551 44,8 -21,54 15 -6,5256 (ASP) 1,111 16 Lens 6 -45,6969 (ASP) 0,838 plastic 1,697 16,3 19,53 17 -10,5700 (ASP) 0,211 18 Lens 7 12,7683 (ASP) 0,646 plastic 1,615 25,4 -10,33 19 4,1592 (ASP) 0,300 20 Prism 2 Plano 6,400 Glass 1,804 46,6 - 21 Plano 0,180 22 filter Plano 0,210 Glass 1,517 64,2 - 23 Plano 0,109 24 Picture Plano - Note: Reference wavelength is 587.6 nm (d-line). An effective radius of the aperture S1 (surface 3) is 5.073 mm. An effective radius of the aperture S2 (surface 6) is 4.103 mm. An effective radius of the aperture S3 (area 13) is 2.948 mm. The optical lens assembly for imaging may further comprise an aperture stop, and the position of the aperture stop may be adjusted depending on the object distance or depending on the arrangement of the front reflective element (the first reflective element) or the trimmed edge(s) of the lens element(s).

[0261] The values ​​of the object distance D0, D1, and D2 may change depending on whether the imaging optical lens assembly for focus adjustment is in the first state or the second state (as shown in Table 9B below). The definitions of the parameters shown in Table 9B are the same as those given in the first embodiment, with corresponding values ​​for the ninth embodiment; therefore, no further explanation is given. TABLE 9B Values ​​of optical and physical parameters / definitions First state (infinite object distance) Second state (finite object distance) fL [mm] 16,85 fS [mm] 12,12 FnoL 1,76 FnoS 2,22 HFOVL [degree] 16,8 HFOVS [degree] 14,4 Object distance [mm] ∞ Object distance [mm] 63,680 D0 [mm] ∞ D0 [mm] 55,000 D1 [mm] 4,450 D1 [mm] 2,050 D2 [mm] 0,738 D2 [mm] 3,138

[0262] It should be understood that only two movable focus states (i.e., the first state and the second state) are disclosed in this embodiment, but the present disclosure is not limited thereto. In addition to the first state and the second state, the imaging optical lens assembly in this embodiment may also have other movable focus states with different focal lengths between the first state and the second state to accommodate focusing conditions for different object distances.

[0263] In Table 9B, the movable group Gm of the imaging optical lens assembly is moved according to the change in the object distance for focus adjustment. For example, when an imaged object is moved from an infinite object distance to a finite object distance, the movable group Gm for focus adjustment is moved along the optical axis toward the object side, so that the imaging optical lens assembly is transferred from the first state to the second state.Specifically, when the object distance changes from an infinite object distance to a finite object distance of 63.680 mm, the optical lens assembly for imaging is transferred from the first state to the second state, the axial distance D1 between the image-side surface of the first lens element E1 and the diaphragm S2 decreases from 4.450 mm in the first state to 2.050 mm in the second state, and the axial distance D2 between the image-side surface of the fourth lens element E4 and the diaphragm S3 increases from 0.738 mm in the first state to 3.138 mm in the second state. In other words, as the object distance decreases, the movable group Gm is moved toward the object side along the optical axis during the focus adjustment operation. TABLE 9C Aspherical coefficients Surface # 4 5 7 8 k = 0,0000E+00 0,0000E+00 0,0000E+00 0,0000E+00 A4 = -2,66491143E-04 -2,92780669E-04 -2,18421396E-04 -4,42500385E-04 A6 = 1,70031018E-05 1,99932103E-05 3,11770197E-05 2,76155610E-04 A8 = -9,36598862E-06 -1,30767295E-05 -2,48047968E-05 2,77298491E-05 A10 = 2,12242379E-06 3,85994734E-06 1,12705589E-05 -5,01308303E-05 A12 = -2,84096209E-07 -7,07220354E-07 -3,17582108E-06 1,67811703E-05 A14 = 2,14169109E-08 8,42443744E-08 5,84260315E-07 -3,20878527E-06 A16 = -6,55104302E-10 -6,71504721E-09 -7,27746623E-08 4,04633592E-07 A18 = -2,85555399E-11 3,59731197E-10 6,19020132E-09 -3,47976691E-08 A20 = 3,70634150E-12 -1,27036363E-11 -3,54137028E-10 2,02262361E-09 A22 = -1,58509552E-13 2,80848795E-13 1,30142107E-11 -7,60146889E-11 A24 = 3,27592411E-15 -3,47155506E-15 -2,76941946E-13 1,66602311E-12 A26 = -2,73665246E-17 1,78726497E-17 2,58529280E-15 -1,61562936E-14 Surface # 9 10 11 12 k = 0,0000E+00 0,0000E+00 0,0000E+00 0,0000E+00 A4 = -1,91690331E-03 -1,43018134E-03 -7,05582682E-04 5,30500986E-04 A6 = 5,82395374E-04 2,92279666E-04 4,99798907E-05 1,14670515E-06 A8 = -1,15317155E-06 3,26612091E-05 8,83965547E-05 1,84076496E-04 A10 = -9,45759681E-05 -9,08193973E-05 -3,55934362E-05 -1,04517294E-04 A12 = 3,52847869E-05 3,34991082E-05 7,88738108E-06 4,19096807E-05 A14 = -7,21096284E-06 -7,05592446E-06 -8,76008981E-07 -1,18827734E-05 A16 = 9,73756571E-07 1,00139906E-06 2,29383174E-08 2,42159397E-06 A18 = -9,05374724E-08 -9,96844548E-08 6,95740563E-09 -3,48051184E-07 A20 = 5,74971534E-09 6,95761554E-09 -9,75944941E-10 3,42044825E-08 A22 = -2,38331146E-10 -3,31413961E-10 5,36460938E-11 -2,17868901E-09 A24 = 5,80596669E-12 1,01461837E-11 -1,11720745E-12 8,07917099E-11 A26 = -6,29497464E-14 -1,76563172E-13 - -1,32067240E-12 A28 = - 1,28259971E-15 - - Surface # 14 15 16 17 k = 0,0000E+00 0,0000E+00 0,0000E+00 0,0000E+00 A4 = 4,57883830E-02 4,52045105E-02 7,66303676E-03 1,51046044E-03 A6 = -1,10257014E-02 -1,02191353E-02 -5,70781009E-03 -1,17375500E-03 A8 = 2,70078122E-03 2,00418687E-03 3,74238367E-03 5,43027672E-04 A10 = -6,03944735E-04 -2,84576863E-04 -3,24025212E-03 -8,89805116E-04 A12 = 1,22565804E-04 1,12613118E-05 2,31820730E-03 8,04847726E-04 A14 = -2,12456579E-05 9,33489184E-06 -1,19899526E-03 -4,32818124E-04 A16 = 2,90768858E-06 -3,58679510E-06 4,41275653E-04 1,52338257E-04 A18 = -2,89994789E-07 7,39066747E-07 -1,16265782E-04 -3,68457969E-05 A20 = 1,93714821E-08 -9,70915035E-08 2,19743545E-05 6,24934161E-06 A22 = -7,65521884E-10 8,08235284E-09 -2,95312175E-06 -7,43190658E-07 A24 = 1,34334994E-11 -3,89790869E-10 2,75276575E-07 6,07225090E-08 A26 = - 8,32172158E-12 -1,69078147E-08 -3,24579016E-09 A28 = - - 6,14980757E-10 1,02130654E-10 A30 = - - -1,00268396E-11 -1,43257357E-12 Surface # 18 19 k = 0,0000E+00 0,0000E+00 A4 = -3,08710157E-02 -3,41827251E-02 A6 = 8,13475401E-03 8,43316228E-03 A8 = -2,29538378E-03 -2,28110373E-03 A10 = 4,57896593E-04 5,36261939E-04 A12 = 3,71299373E-05 -1,05739034E-04 A14 = -7,80010207E-05 1,70146806E-05 A16 = 3,41989690E-05 -2,20140603E-06 A18 = -8,88007793E-06 2,25294929E-07 A20 = 1,54068799E-06 -1,78210348E-08 A22 = -1,83566016E-07 1,05407363E-09 A24 = 1,48713998E-08 -4,44692429E-11 A26 = -7,83881568E-10 1,24476380E-12 A28 = 2,42542390E-11 -2,03257115E-14 A30 = -3,34168062E-13 1,42348955E-16

[0264] In the 9th embodiment, the equation of the aspherical surface profiles of the aforementioned lens elements is the same as the equation of the 1st embodiment. The definitions of these parameters, shown in Table 9D below, are also the same as those given in the 1st embodiment, with corresponding values ​​for the 9th embodiment; therefore, explanations will not be repeated.

[0265] In addition, these parameters from Table 9A to Table 9C can be calculated as the following values ​​and satisfy the following conditions: TABLE 9D Values ​​of optical and physical parameters / definitions fL [mm] 16,85 fL / fS 1,39 FnoL 1,76 TL / fL 1,23 HFOVL [degree] 16,8 TL / lmgH 4,02 FOVL [degree] 33,6 fL / f234 1,31 Dr3i / BL (first state) 2,33 f1 / f2 4,97 T12 / f+T12 / BL (first state) 0,63 (f4+f5) / f1 0,28 T12 / CT1 (first state) 3,75 (|R8|+|R10|) / fL 0,78 T56 / CT1 (first state) 1,30 R10 / R1 -0,68 T34 / T45 (first state) 2,70 R6 / R3 1,73 fS [mm] 12,12 R6 / R8 -1,70 FnoS 2,22 ΣCT / ΣAT 0,80 HFOVS [degree] 14,4 10×(CT5+CT6) / f6 0,63 FOVS [degrees] 28,8 CT6 / CT7 1,30 Dr3i / BL (second state) 2,66 ΣETL / ΣCT 0,77 T12 / f+T12 / BL (second state) 0,18 ET6L / CT6 0,52 T12 / CT1 (second state) 0,94 ET7L / CT7 1,78 T56 / CT1 (second state) 1,30 Y7R1L / Y6R2L 1,04 T34 / T45 (second state) 0,64 SAG7R1L / SAG7R2L 3,06 10. Embodiment

[0266] Fig.28 is a perspective view of an image sensing unit according to the 10th embodiment of the present disclosure. In this embodiment, an image sensing unit 100 is a camera module including a lens unit 101, a driving device 102, an image sensor 103, and an image stabilizer 104. The lens unit 101 includes the imaging optical lens assembly disclosed in the first embodiment, a barrel, and a holding member (the reference numerals of which are omitted) for holding the imaging optical lens assembly. However, the lens unit 101 may alternatively be provided with the imaging optical lens assembly disclosed in other embodiments of the present disclosure, and the present disclosure is not limited thereto.The imaging light is collimated in the lens unit 101 of the image acquisition unit 100 to form an image with the drive device 102, which is used to focus the image onto the image sensor 103, and the formed image is then digitally transmitted to another electronic component for further processing.

[0267] The drive device 102 may have an autofocus function, and the drive device 102 may use various drive configurations, such as lead screws, voice coil motors (VCMs), microelectromechanical systems (MEMS), piezoelectric systems, shape memory alloys, spring-like, or spherical drive systems, but the present disclosure is not limited thereto. The drive device 102 is advantageous for obtaining a better imaging position for the lens unit 101, so that a clear image of the imaged object can be captured by the lens unit 101 at different object distances. The image sensor 103 (for example, CMOS or CCD), which may have high light sensitivity and low noise, is arranged on the image surface of the optical lens assembly for imaging to achieve higher image quality.

[0268] The image stabilizer 104, such as an accelerometer, a gyro sensor, and a Hall-effect sensor, is configured to cooperate with the drive device 102 to provide optical image stabilization (OIS). The drive device 102, which cooperates with the image stabilizer 104, is advantageous for compensating for pan and tilt of the lens unit 101 to reduce motion blur during exposure. In some cases, compensation can be provided by electronic image stabilization (EIS) using image processing software, thereby improving image quality in dynamic scenarios or low-light conditions.Some movable elements in the image acquisition unit 100 can be driven by the drive device 102 to compensate for image tilt in real time, thereby achieving optical image stabilization. For example, the drive device 102 can drive the movable elements, such as the movable group of the optical lens assembly for imaging and the image sensor 103, to move in directions parallel to, inclined to, or perpendicular to the optical axis. However, the present disclosure is not limited to the above-mentioned drive configurations. 11. Embodiment

[0269] Fig. 29 is a perspective view of an electronic device according to the 11th embodiment of the present disclosure, Fig. 30 is another perspective view of the electronic device in Fig. 29 and Fig. 31 is a block diagram of the electronic device in Fig. 29.

[0270] In this embodiment, an electronic device 200 is a smartphone that includes the image capture unit 100 according to the 10th embodiment, an image capture unit 100a, an image capture unit 100b, an image capture unit 100c, an image capture unit 100d, an image capture unit 100e, a flash module 201, a focus assist module 202, an image signal processor 203, a display module 204, and an image software processor 205. The image capture unit 100, the image capture unit 100a, and the image capture unit 100b are arranged on the same side of the electronic device 200, and each of the image capture units 100, 100a, and 100b has a single focal point. The focus assist module 202 may be a laser distance meter or a TOF (Time of Flight) module, but the present disclosure is not limited thereto.The image capture unit 100c, the image capture unit 100d, the image capture unit 100e, and the display module 204 are arranged on the opposite side of the electronic device 200, and the display module 204 may be a user interface, so the image capture units 100c, 100d, and 100e may be front-facing cameras of the electronic device 200 for taking selfies, but the present disclosure is not limited thereto. Furthermore, each of the image capture units 100a, 100b, 100c, 100d, and 100e may include the optical lens assembly for imaging according to the present invention and have a similar configuration to the image capture unit 100. Specifically, each of the image acquisition units 100a, 100b, 100c, 100d, and 100e may include a lens unit, a drive device, an image sensor, and an image stabilizer, and may also include a reflective element for deflecting the optical path.In addition, each of the lens units of the image acquisition units 100a, 100b, 100c, 100d, and 100e may include the imaging optical lens assembly of the present disclosure, a tube, and a holding member for holding the imaging optical lens assembly.

[0271] The image capture unit 100 is a telephoto image capture unit with a light path deflection function, the image capture unit 100a is a wide-angle image capture unit, the image capture unit 100b is an ultra-wide-angle image capture unit, the image capture unit 100c is a wide-angle image capture unit, the image capture unit 100d is an ultra-wide-angle image capture unit, and the image capture unit 100e is a TOF image capture unit. In this embodiment, the image capture units 100, 100a, and 100b have different fields of view, so that the electronic device 200 can have different magnification ratios to meet the requirement of the optical zoom functionality. In addition, the image capture unit 100e can determine depth information of the imaged object. In addition, the light deflection configuration of the image capture unit 100 can, for example, be one of the Fig. 41 to Fig.45 shown configurations, to which reference is made in the preceding descriptions Fig. 41 to Fig. 45, and the details thereof will not be repeated. Furthermore, each of the image acquisition units 100a, 100b, 100c, 100d, and 100e may also have a light redirection configuration, for example, corresponding to one of the configurations shown in Fig. 41 to Fig. 45 shown configurations, to which reference is made in the above descriptions Fig. 41 to Fig. 45, and the details thereof will not be repeated. In this embodiment, the electronic device 200 includes a plurality of image capture units 100, 100a, 100b, 100c, 100d, and 100e, but the present disclosure is not limited to the number and arrangement of the image capture units.

[0272] When a user captures images of an object 206, the light beams are collimated in the image capture unit 100, the image capture unit 100a, or the image capture unit 100b to create images, and the flash module 201 is activated to provide light assistance. The focus assist module 202 detects the object distance of the imaged object 206 to achieve fast autofocusing. The image signal processor 203 is configured to optimize the captured image to improve image quality. The light beam emitted by the focus assist module 202 can be either conventional infrared light or laser light. Additionally, the light beams can be collimated in the image capture unit 100c, 100d, or 100e to create images.The display module 204 may include a touchscreen, and the user may interact with the display module 204 and the image software processor 205, which has multiple functions for capturing images and performing image processing. Alternatively, the user may capture images using a physical button. The image processed by the image software processor 205 may be displayed on the display module 204. 12. Embodiment

[0273] Fig. 32 is a schematic view of an electronic device according to the 12th embodiment of the present disclosure, and Fig. 33 is another schematic view of the electronic device in Fig. 32.

[0274] In this embodiment, an electronic device 300 is a smartphone that includes the image capture unit 100 as disclosed in the 10th embodiment, an image capture unit 100f, an image capture unit 100g, an image capture unit 100h, and a display module 304. As shown in Fig. As shown in Figure 32, the image capture unit 100, the image capture unit 100f, and the image capture unit 100g are arranged on the same side of the electronic device 300, and each of the image capture units 100, 100f, and 100g has a single focal point. As shown in Fig.As shown in Figure 33, the image capture unit 100h and the display module 304 are arranged on the opposite side of the electronic device 300, so that the image capture unit 100h may be a front-facing camera of the electronic device 300 for taking selfies, but the present disclosure is not limited thereto. Further, each of the image capture units 100f, 100g, and 100h may include the optical lens assembly for imaging of the present disclosure and have a similar configuration to the image capture unit 100. Specifically, each of the image capture units 100f, 100g, and 100h may include a lens unit, a driving device, an image sensor, and an image stabilizer.In addition, each of the lens units of the image acquisition units 100f, 100g, and 100h may include the imaging optical lens assembly of the present disclosure, a tube, and a holding member for holding the imaging optical lens assembly.

[0275] The image capture unit 100 is a telephoto image capture unit, the image capture unit 100f is a wide-angle image capture unit, the image capture unit 100g is an ultra-wide-angle image capture unit, and the image capture unit 100h is a wide-angle image capture unit. In this embodiment, the image capture units 100, 100f, and 100g have different fields of view, so that the electronic device 300 can have different magnification ratios to meet the requirement of optical zoom functionality. Furthermore, the image capture unit 100h, as shown in Fig.33, have a non-circular opening, and the tube or lens elements in the image capture unit 100h may have cut edges at their edges to conform to the shape of the non-circular opening. Therefore, the length of the major axis and / or the minor axis of the image capture unit 100h can be further reduced, which is advantageous for reducing the size of the image capture unit 100h, increasing the ratio of the area of ​​the display module 304 to that of the electronic device 300, and reducing the thickness of the electronic device 300, thereby achieving compactness. In addition, at least one lens element of the optical lens assembly for imaging may have a non-circular optically effective area after the at least one lens element is cut at its periphery.In this embodiment, the electronic device 300 includes a plurality of image acquisition units 100, 100f, 100g, and 100h, but the present disclosure is not limited to the number and arrangement of the image acquisition units. 13. Embodiment

[0276] Fig. 34 is a perspective view of an electronic device according to the 13th embodiment of the present disclosure.

[0277] In this embodiment, an electronic device 400 is a smartphone that includes the image capture unit 100 according to the 10th embodiment, an image capture unit 100i, an image capture unit 100j, an image capture unit 100k, an image capture unit 100m, an image capture unit 100n, an image capture unit 100p, an image capture unit 100q, an image capture unit 100r, a flash module 401, a focus assist module, an image signal processor, a display module, and an image software processor (not shown). The image capture units 100, 100i, 100j, 100k, 100m, 100n, 100p, 100q and 100r are arranged on the same side of the electronic device 400, while the display module is arranged on the opposite side of the electronic device 400.Furthermore, each of the image acquisition units 100i, 100j, 100k, 100m, 100n, 100p, 100q, and 100r may include the imaging optical lens assembly of the present disclosure and have a similar configuration to the image acquisition unit 100, the details of which will not be repeated.

[0278] The image acquisition unit 100 is a telephoto image acquisition unit with a beam path deflection function, the image acquisition unit 100i is a wide-angle image acquisition unit, the image acquisition unit 100j is a telephoto image acquisition unit with a beam path deflection function, the image acquisition unit 100k is a wide-angle image acquisition unit, the image acquisition unit 100m is an ultra-wide-angle image acquisition unit, the image acquisition unit 100n is an ultra-wide-angle image acquisition unit, the image acquisition unit 100p is a telephoto image acquisition unit, the image acquisition unit 100q is a telephoto image acquisition unit, and the image acquisition unit 100r is a TOF image acquisition unit.In this embodiment, the image capture units 100, 100i, 100j, 100k, 100m, 100n, 100p, and 100q have different fields of view, so that the electronic device 400 can have different magnification ratios to meet the requirement of optical zoom functionality. Furthermore, the image capture unit 100r can determine depth information of the imaged object. Furthermore, the light redirection configuration of the image capture units 100 and 100j can, for example, be one of the configurations shown in FIG. Fig. 41 to Fig. 45 shown structures, which can be accessed with reference to the above descriptions. Fig. 41 to Fig.45, and the details thereof will not be repeated. In this embodiment, the electronic device 400 includes a plurality of image capture units 100, 100i, 100j, 100k, 100m, 100n, 100p, 100q, and 100r, but the present disclosure is not limited to the number and arrangement of the image capture units. When a user captures images of an object, the light beams in the image capture unit 100, 100i, 100j, 100k, 100m, 100n, 100p, 100q, or 100r are condensed to form images, and the flash module 401 is activated for light support. Furthermore, the subsequent processes are performed similarly to the above-mentioned embodiments, and the details thereof will not be repeated.

[0279] The smartphones in the embodiments serve only as examples to show the image sensing unit of the present disclosure installed in an electronic device, and the present disclosure is not limited thereto. The image sensing unit can optionally be applied to optical systems with a movable focus. Furthermore, the imaging optical lens assembly of the image sensing unit has good aberration correction capability and high image quality, and can be applied to 3D image sensing applications (three-dimensional image sensing applications) in products such as digital cameras, mobile devices, digital tablets, smart TVs, network monitoring devices, dashboard cameras, vehicle rearview cameras, multi-camera devices, image recognition systems, motion sensor input devices, unmanned aerial vehicles, wearable devices, portable video recorders, and other electronic imaging devices.

[0280] The foregoing description has been made for the purpose of illustration with reference to specific embodiments. It should be noted that TABLES 1A-9D show different data for the various embodiments; however, the data for the various embodiments were obtained from experiments. The embodiments were chosen and described in order to best explain the principles of the disclosure and their practical applications to enable others skilled in the art to best utilize the disclosure and various embodiments with various modifications as are suited to the particular use contemplated. The above-illustrated embodiments and the accompanying drawings are exemplary and are not intended to be exhaustive or to limit the scope of the present disclosure to the precise forms disclosed. Many modifications and variations are possible in light of the above teachings.

Claims

[1] An optical lens assembly for imaging, comprising seven lens elements (E1, E2, E3, E4, E5, E6, and E7), the seven lens elements (E1, E2, E3, E4, E5, E6, and E7) being, in order from an object side to an image side along an optical path, a first lens element (E1), a second lens element (E2), a third lens element (E3), a fourth lens element (E4), a fifth lens element (E5), a sixth lens element (E6), and a seventh lens element (E7), and each of the seven lens elements (E1, E2, E3, E4, E5, E6, and E7) has an object-side surface facing the object side and an image-side surface facing the image side; wherein the first lens element (E1) has a positive refractive power, the object-side surface of the second lens element (E2) is convex in a paraxial region thereof, the fourth lens element (E4) has a positive refractive power, the image-side surface of the fourth lens element (E4) is convex in a paraxial region thereof, the image-side surface of the fifth lens element (E5) is convex in a paraxial region thereof, the image-side surface of the fifth lens element (E5) has at least one inflection point (P); wherein, when an imaged object is located at an infinite object distance, the optical lens assembly is in a first state for imaging; and where a sum of the central thicknesses of all lens elements of the imaging optical lens assembly is ΣCT, a central thickness of the first lens element (E1) is CT1, a sum of axial distances between each of all adjacent lens elements of the imaging optical lens assembly is ΣAT, an axial distance between the first lens element (E1) and the second lens element (E2) is T12, an axial distance between the object-side surface of the second lens element (E2) and an image surface (IMG) is Dr3i, an axial distance between the image-side surface of the seventh lens element (E7) and the image surface (IMG) is BL, a focal length of the imaging optical lens assembly in the first state is fL, a composite focal length of the second lens element (E2), the third lens element (E3), and the fourth lens element (E4) is f234, and the following conditions are met: 0.40<∑CT / ∑AT<1.58; 1.10 <Dr3i / BL<3,50; 0.50 <fL / f234<2,60; und 0.05 <T12<CT1<6,00. [2] An imaging optical lens assembly according to claim 1, wherein the fifth lens element (E5) has a negative refractive power. [3] An imaging optical lens assembly according to claim 1, wherein an axial distance between the object-side surface of the first lens element (E1) and the image surface (IMG) is TL, the focal length of the imaging optical lens assembly in the first state is fL, and the following condition is satisfied: 0.70 <TL / fL<1,90. [4] The imaging optical lens assembly according to claim 1, wherein a central thickness of the sixth lens element (E6) is CT6, a central thickness of the seventh lens element (E7) is CT7, an axial distance between the object-side surface of the first lens element (E1) and the image surface (IMG) is TL, a maximum image height of the imaging optical lens assembly is ImgH, and the following conditions are satisfied: 0.20 <CT6 / CT7<1,45; und 3.70 <TL / ImgH<4,70. [5] An imaging optical lens assembly according to claim 1, wherein each of at least two lens elements in the imaging optical lens assembly has an Abbe number less than 30.0; and wherein a radius of curvature of the object-side surface of the second lens element (E2) is R3, a radius of curvature of the image-side surface of the third lens element (E3) is R6, and the following condition is satisfied: 0.10 <R6 / R3<2,30. [6] An optical lens assembly for imaging according to claim 1, wherein a radius of curvature of the object-side surface of the first lens element (E1) is R1, a radius of curvature of the image-side surface of the fifth lens element (E5) is R10, and the following condition is satisfied: −1.80 <R10 / R1<0,60. [7] An imaging optical lens assembly according to claim 1, wherein an axial distance between the fifth lens element (E5) and the sixth lens element (E6) is T56, the central thickness of the first lens element (E1) is CT1, and the following condition is satisfied: 0.15 <T56 / CT1<3,50. [8] An imaging optical lens assembly according to claim 1, wherein a central thickness of the fifth lens element (E5) is CT5, a central thickness of the sixth lens element (E6) is CT6, a focal length of the sixth lens element (E6) is f6, and the following condition is satisfied: −0.80<10×(CT5+CT6) / f6<0.

90. [9] The imaging optical lens assembly according to claim 1, wherein a displacement parallel to an optical axis from an axial vertex of the object-side surface of the seventh lens element (E7) to a position of the maximum effective radius of the object-side surface of the seventh lens element (E7) when the imaging optical lens assembly is in the first state is SAG7R1L, a displacement parallel to the optical axis from an axial vertex of the image-side surface of the seventh lens element (E7) to a position of the maximum effective radius of the image-side surface of the seventh lens element (E7) when the imaging optical lens assembly is in the first state is SAG7R2L,a distance parallel to the optical axis between a position of the maximum effective radius of the object-side surface of the sixth lens element (E6) and a position of the maximum effective radius of the image-side surface of the sixth lens element (E6) when the optical lens assembly for imaging is in the first state is ET6L, a central thickness of the sixth lens element (E6) is CT6, and the following conditions are met: −0.80 <SAG7R1L / SAG7R2L<3,80; und 0.30 <ET6L / CT6<2,70. [10] An imaging optical lens assembly according to claim 1, wherein when an imaged object is located at a finite object distance, the imaging optical lens assembly is in a second state; and wherein when an imaged object is moved from an infinite object distance to a finite object distance within 150 mm, some of the seven lens elements (E1, E2, E3, E4, E5, E6 and E7) in the imaging optical lens assembly are moved along an optical axis for focus adjustment and the imaging optical lens assembly is transferred from the first state to the second state. [11] An optical lens assembly for imaging according to claim 1, further comprising a reflective element (E8) arranged along the optical path between an imaged object and the first lens element (E1). [12] An image sensing unit (1, 100) comprising: the imaging optical lens assembly according to claim 1; and an image sensor (IS, 103) disposed on the image surface (IMG) of the imaging optical lens assembly. [13] An electronic device (200) comprising: the image capture unit (1, 100) according to claim 12. [14] An optical lens assembly for imaging, comprising seven lens elements (E1, E2, E3, E4, E5, E6 and E7), wherein the seven lens elements (E1, E2, E3, E4, E5, E6 and E7) are, in order from an object side to an image side along an optical path, a first lens element (E1), a second lens element (E2), a third lens element (E3), a fourth lens element (E4), a fifth lens element (E5), a sixth lens element (E6) and a seventh lens element (E7), and each of the seven lens elements (E1, E2, E3, E4, E5, E6 and E7) has an object-side surface facing the object side and an image-side surface facing the image side; wherein the first lens element (E1) has a positive refractive power, the object-side surface of the first lens element (E1) is convex in a paraxial region thereof, the fifth lens element (E5) has a negative refractive power, the object-side surface of the fifth lens element (E5) is concave in a paraxial region thereof, the image-side surface of the fifth lens element (E5) is convex in a paraxial region thereof, and the image-side surface of the fifth lens element (E5) has at least one inflection point (P);and wherein a sum of the central thicknesses of all the lens elements of the imaging optical lens assembly is ΣCT, a sum of the axial distances between each of all the adjacent lens elements of the imaging optical lens assembly is ΣAT, an axial distance between the object-side surface of the second lens element (E2) and an image surface (IMG) is Dr3i, an axial distance between the image-side surface of the seventh lens element (E7) and the image surface (IMG) is BL, a radius of curvature of the image-side surface of the third lens element (E3) is R6, a radius of curvature of the image-side surface of the fourth lens element (E4) is R8, a focal length of the first lens element (E1) is f1, a focal length of the fourth lens element (E4) is f4, a focal length of the fifth lens element (E5) is f5, and the following conditions are satisfied:; 0.60<∑CT / ∑AT<1.58; 1.10 <Dr3i / BL<3,50; −5.00 <R6 / R8<−0,05; und −2.50<(f4+f5) / f1<1.

20. [15] An imaging optical lens assembly according to claim 14, wherein the fourth lens element (E4) has a positive refractive power and the image-side surface of the third lens element (E3) is concave in a paraxial region thereof. [16] An imaging optical lens assembly according to claim 14, wherein at least one of the object-side surface and the image-side surface of at least one of the first lens element (E1), the second lens element (E2), the third lens element (E3), the fourth lens element (E4), and the fifth lens element (E5) has at least one critical point (C) in an off-axis region thereof. [17] An imaging optical lens assembly according to claim 14, wherein the object-side surface of the fifth lens element (E5) has at least one inflection point (P); and wherein an axial distance between the first lens element (E1) and the second lens element (E2) is T12, a central thickness of the first lens element (E1) is CT1, and the following condition is satisfied: 0.05 <T12 / CT1<6,00. [18] An imaging optical lens assembly according to claim 14, wherein an axial distance between the first lens element (E1) and the second lens element (E2) is T12, an axial distance between the third lens element (E3) and the fourth lens element (E4) is T34, an axial distance between the fourth lens element (E4) and the fifth lens element (E5) is T45, a focal length of the imaging optical lens assembly is f, the axial distance between the image-side surface of the seventh lens element (E7) and the image surface (IMG) is BL, and the following conditions are satisfied: 0.00≤T34 / T45<3.50; and 0.00≤T12 / f+T12 / BL<1.

25. [19] An imaging optical lens assembly according to claim 14, wherein, when an imaged object is located at an infinite object distance, the imaging optical lens assembly is in a first state; and wherein the radius of curvature of the image-side surface of the fourth lens element (E4) is R8, a radius of curvature of the image-side surface of the fifth lens element (E5) is R10, a focal length of the imaging optical lens assembly in the first state is fL, and the following condition is satisfied: 0.20<(|R8|+|R10|) / fL<2.

00. [20] An optical lens assembly for imaging according to claim 14, wherein the focal length of the first lens element (E1) is f1, a focal length of the second lens element (E2) is f2, the focal length of the fourth lens element (E4) is f4, the focal length of the fifth lens element (E5) is f5, and the following conditions are satisfied: −2.00 <f1 / f2<6,00; und −1.70<(f4+f5) / f1<0.

70. [21] An imaging optical lens assembly according to claim 14, wherein an axial distance between the object-side surface of the first lens element (E1) and the image surface (IMG) is TL, a maximum image height of the imaging optical lens assembly is ImgH, and the following condition is satisfied: 3.60 <TL / ImgH<4,80. [22] The imaging optical lens assembly according to claim 14, wherein a maximum field of view of the imaging optical lens assembly is FOV and the following condition is satisfied: 15.0 degrees≤FOV≤40.0 degrees. [23] An optical lens assembly for imaging according to claim 22, further comprising two reflective elements (E8, E9), one of the two reflective elements (E8, E9) being arranged along the optical path between an imaged object and the first lens element (E1) and the other of the two reflective elements (E8, E9) being arranged along the optical path between the seventh lens element (E7) and the image surface (IMG). [24] An imaging optical lens assembly according to claim 14, wherein, when an imaged object is located at an infinite object distance, the imaging optical lens assembly is in a first state; when an imaged object is located at a finite object distance, the imaging optical lens assembly is in a second state; and wherein, when an imaged object is moved from an infinite object distance to a finite object distance within 100 mm, some of the seven lens elements (E1, E2, E3, E4, E5, E6, and E7) in the imaging optical lens assembly are moved along an optical axis for focus adjustment, and the imaging optical lens assembly is transferred from the first state to the second state. [25] An imaging optical lens assembly according to claim 24, wherein a focal length of the imaging optical lens assembly in the first state is fL, a focal length of the imaging optical lens assembly in the second state is fS, and the following condition is satisfied: 1.10 <fL / fS<1,80. [26] An imaging optical lens assembly according to claim 14, wherein, when an imaged object is located at an infinite object distance, the imaging optical lens assembly is in a first state; and wherein a sum of distances parallel to an optical axis between a position of the maximum effective radius of the object-side surface and a position of the maximum effective radius of the image-side surface of each lens element of the imaging optical lens assembly when the imaging optical lens assembly is in the first state is ΣETL, the sum of the central thicknesses of all the lens elements of the imaging optical lens assembly is ΣCT, and the following condition is satisfied: 0.40<∑ETL / ∑CT<1.

20. [27] An imaging optical lens assembly according to claim 14, wherein, when an imaged object is located at an infinite object distance, the imaging optical lens assembly is in a first state;and wherein a distance parallel to an optical axis between a position of the maximum effective radius of the object-side surface of the seventh lens element (E7) and a position of the maximum effective radius of the image-side surface of the seventh lens element (E7) when the optical lens assembly for imaging is in the first state is ET7L, a central thickness of the seventh lens element (E7) is CT7, a maximum effective radius of the image-side surface of the sixth lens element (E6) when the optical lens assembly for imaging is in the first state is Y6R2L, a maximum effective radius of the object-side surface of the seventh lens element (E7) when the optical lens assembly for imaging is in the first state is Y7R1L, and the following conditions are satisfied:; 0.30 <ET7L / CT7<2,20; und 0.70 <Y7R1L / Y6R2L<1,50. [28] An imaging optical lens assembly according to claim 14, wherein, when an imaged object is located at an infinite object distance, the imaging optical lens assembly is in a first state; and wherein the sum of the central thicknesses of all lens elements of the imaging optical lens assembly is ΣCT, a central thickness of the first lens element (E1) is CT1, the sum of the axial distances between each of all adjacent lens elements of the imaging optical lens assembly is ΣAT, an axial distance between the first lens element (E1) and the second lens element (E2) is T12, the axial distance between the object-side surface of the second lens element (E2) and the image surface (IMG) is Dr3i, the axial distance between the image-side surface of the seventh lens element (E7) and the image surface (IMG) is BL, a focal length of the imaging optical lens assembly in the first state is fL,the focal length of the first lens element (E1) is f1, the focal length of the fourth lens element (E4) is f4, the focal length of the fifth lens element (E5) is f5, a combined focal length of the second lens element (E2), the third lens element (E3) and the fourth lens element (E4) is f234, the radius of curvature of the image-side surface of the third lens element (E3) is R6, the radius of curvature of the image-side surface of the fourth lens element (E4) is R8, and the following conditions are met: 0.70≤∑CT / ∑AT≤1.31; 1.91≤Dr3i / BL≤2.74; 1.20≤fL / f234≤18.4; 0.18≤T12 / CT1≤4.49; −1.70≤R6 / R8≤−0.24; and −0.73≤(f4+f5) / f1≤0.28.

Images