Photographic lens assembly, image capture unit and electronic device

Abstract

Photographic lens arrangement comprising seven lens elements (E1, E2, E3, E4, E5, E6, E7), wherein the seven lens elements (E1, E2, E3, E4, E5, E6, E7) are arranged in the order from an object side to an image side along a beam path comprising 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 wherein each of the seven lens elements (E1, E2, E3, E4, E5, E6, 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 negative refractive power, the image-side surface of the second lens element (E2) is concave in a paraxial region of the same, the image-side surface of the third lens element (E3) is convex in a paraxial region of the same, the fourth lens element (E4) has a negative refractive power, the sixth lens element (E6) has a positive refractive power, the object-side surface of the sixth lens element (E6) is convex in a paraxial region of the same, the image-side surface of the sixth lens element (E6) is convex in a paraxial region of the same, and the image-side surface of the seventh lens element (E7) has at least one inflection point (P); where TL is an axial distance between the object-side surface of the first lens element (E1) and an image surface (IMG), f is a focal length of the photographic lens arrangement, R9 is a radius of curvature of the object-side surface of the fifth lens element (E5), R11 is a radius of curvature of the object-side surface of the sixth lens element (E6), and the following conditions are met: 1.80 < TL / f < 4.2 ; and 0.00 < 100 × | R 11 / R 9 | <23.50.

Description

BACKGROUNDTechnical field

[0001] The present disclosure relates to a photographing lens assembly, an image capturing unit, and an electronic device, particularly to a photographing lens assembly and an image capturing unit applicable to an electronic device. Description of the related prior art

[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 has become one of the essential features of an optical system today.

[0003] Furthermore, due to rapid changes in technology, electronic devices equipped with optical systems are becoming increasingly multifunctional for various applications, and therefore, the functionality requirements for the optical systems are increasing. However, for a conventional optical system, it is difficult to achieve a balance between requirements such as high image quality, low sensitivity, appropriate aperture size, miniaturization, and a desirable field of view. OVERVIEW

[0004] According to one aspect of the present disclosure, a photographic lens assembly includes seven lens elements. The seven lens elements are, in order from the 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.

[0005] Preferably, the first lens element has a negative refractive power. Preferably, the image-side surface of the second lens element is concave in a paraxial region thereof. Preferably, the image-side surface of the third lens element is convex in a paraxial region thereof. Preferably, the fourth lens element has a negative refractive power. Preferably, the sixth lens element has a positive refractive power. Preferably, the object-side surface of the sixth lens element is convex in a paraxial region thereof. Preferably, the image-side surface of the sixth lens element is convex in a paraxial region thereof. Preferably, the image-side surface of the seventh lens element has at least one inflection point.

[0006] When an axial distance between the object-side surface of the first lens element and an image surface is TL, a focal length of the photographing lens array is f, a radius of curvature of the object-side surface of the fifth lens element is R9, and a radius of curvature of the object-side surface of the sixth lens element is R11, the following conditions are preferably satisfied: 1.80 <TL / f<4,20;und 0.00<100×|R11 / R9|<23.50.

[0007] According to another aspect of the present disclosure, a photographing lens assembly includes seven lens elements. The seven lens elements are, in order from the 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.

[0008] Preferably, the first lens element has a negative refractive power. Preferably, the image-side surface of the first lens element is concave in a paraxial region thereof. Preferably, the image-side surface of the second lens element is concave in a paraxial region thereof. Preferably, the fourth lens element has a negative refractive power. Preferably, the sixth lens element has a positive refractive power. Preferably, the object-side surface of the sixth lens element is convex in a paraxial region thereof. Preferably, the image-side surface of the sixth lens element is convex in a paraxial region thereof. Preferably, the image-side surface of the seventh lens element has at least one inflection point.

[0009] When an axial distance between the object-side surface of the first lens element and an image surface is TL, a focal length of the photographing lens array is f, a focal length of the first lens element is f1, a focal length of the fourth lens element is f4, a focal length of the sixth lens element is f6, an axial distance between the first lens element and the second lens element is T12, an axial distance between the second lens element and the third lens element is T23, an axial distance between the third lens element and the fourth lens element is T34, an axial distance between the fourth lens element and the fifth lens element is T45, a center thickness of the second lens element is CT2, a radius of curvature of the object-side surface of the first lens element is R1, and a radius of curvature of the object-side surface of the sixth lens element is R11, the following conditions are preferably satisfied: 1.80 <TL / f<4,20; 1.85<(|f / f1|+|f / f6|) / |f / f4|<12.50; 0.10<(T12+T23) / CT2<1.80; 0.50<(|R1|+|R11|) / f<10.00; and (T23+T34) / (T12+T45)<1.85.

[0010] According to another aspect of the present disclosure, a photographing lens assembly includes seven lens elements. The seven lens elements are, in order from the 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.

[0011] Preferably, the first lens element has a negative refractive power. Preferably, the object-side surface of the first lens element is concave in a paraxial region thereof. Preferably, the sixth lens element has a positive refractive power. Preferably, the image-side surface of the seventh lens element has at least one inflection point.

[0012] When an axial distance between the object-side surface of the first lens element and an image surface is TL, a focal length of the photographing lens array is f, a sum of the center thicknesses of all lens elements of the photographing lens array is ΣCT, a sum of the axial distances between each of all adjacent lens elements of the photographing lens array is ΣAT, a focal length of the fifth lens element is f5, a focal length of the sixth lens element is f6, an axial distance between the object-side surface of the first lens element and the image-side surface of the seventh lens element is TD, a center thickness of the first lens element is CT1, a center thickness of the second lens element is CT2, a center thickness of the fourth lens element is CT4, and a center thickness of the fifth lens element is CT5, the following conditions are preferably satisfied: 1.80 <TL / f<4,10 2.65<∑CT / ∑AT<10.00; 0.00≤|f6 / f5<0.55;| 1.85<10×f / TD<3.90; and 1.40<(CT2+CT5) / (CT1+CT4).

[0013] According to another aspect of the foregoing disclosure, an image capturing unit comprises one of the above photographing lens assemblies and an image sensor, wherein the image sensor is arranged on the image surface of the photographing lens assembly.

[0014] According to another aspect of the present disclosure, an electronic device comprises the above image capture unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The disclosure can be better understood by reading the following detailed description of the embodiments, with reference to the accompanying drawings as follows: Fig. 1 shows a schematic view of an image acquisition unit 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 according to the first embodiment; Fig. 3 shows a schematic view of an image acquisition unit according to the second embodiment of the present disclosure; Fig. 4 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image sensing unit according to the second embodiment; Fig. 5 shows a schematic view of an image acquisition unit according to the third embodiment of the present disclosure; Fig. 6 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image sensing unit according to the third embodiment; Fig. 7 shows a schematic view of an image acquisition unit according to the fourth embodiment of the present disclosure; Fig.8 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image sensing unit according to the fourth embodiment; Fig. 9 shows a schematic view of an image acquisition unit according to the fifth embodiment of the present disclosure; Fig. 10 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image sensing unit according to the fifth embodiment; Fig. 11 shows a schematic view of an image acquisition unit according to the sixth embodiment of the present disclosure; Fig. 12 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image sensing unit according to the sixth embodiment; Fig. 13 shows a schematic view of an image acquisition unit according to the seventh embodiment of the present disclosure; Fig.14 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image sensing unit according to the seventh embodiment; Fig. 15 shows a schematic view of an image acquisition unit according to the eighth embodiment of the present disclosure; Fig. 16 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image sensing unit according to the eighth embodiment; Fig. 17 shows a schematic view of an image acquisition unit according to the ninth embodiment of the present disclosure; Fig. 18 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image sensing unit according to the ninth embodiment; Fig. 19 shows a perspective view of an image acquisition unit according to the tenth embodiment of the present disclosure; Fig.20 is a perspective view of an electronic device according to the eleventh embodiment of the present disclosure; Fig. 21 shows another perspective view of the electronic device in Fig. 20; Fig. 22 shows a perspective view of an electronic device according to the twelfth embodiment of the present disclosure; Fig. 23 shows another perspective view of the electronic device in Fig. 22; Fig. 24 shows a block diagram of the electronic device in Fig. 22; Fig. 25 shows a perspective view of an electronic device according to the thirteenth embodiment of the present disclosure; Fig. 26 shows a perspective view of an electronic device according to the fourteenth embodiment of the present disclosure; Fig.27 shows a schematic view of inflection points on lens surfaces, critical points on lens surfaces, Yc11, Yc61 and Yc72, according to the first embodiment of the present disclosure; Fig. 28 shows a schematic view of ET6, ET7, SAG7R1, Y6R1, Y6R2 and Y7R1 according to the first embodiment of the present disclosure; Fig. 29 is a schematic view showing a configuration of a light redirecting element in a photographing lens assembly according to an embodiment of the present disclosure; Fig. 30 shows a schematic view of another configuration of a light-directing element in a photographing lens assembly according to an embodiment of the present disclosure; and Fig. 31 shows a schematic view of a configuration of two light redirecting elements in a photographing lens assembly according to an embodiment of the present disclosure. Detailed description

[0016] A photographic lens arrangement has seven lens elements. The seven lens elements are, in order from the object side to an image side along a light 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.

[0017] The first lens element has a negative refractive power. This is advantageous for enlarging the angle of view to obtain a relatively wide range of image information. The object-side surface of the first lens element may be concave in a paraxial region thereof. Therefore, it is well suited for correcting aberrations caused by incident light from a wide angle of view. The image-side surface of the first lens element may be concave in a paraxial region thereof. Therefore, it is advantageous to adjust the lens shape of the first lens element and harmonize the optical path to achieve an appropriate balance between the angle of view and the image size.

[0018] The object-side surface of the second lens element may be convex in a paraxial region thereof. Therefore, it is advantageous for effectively receiving light from a wide angle of view and adjusting the deflection angle of the optical path, thereby reducing the outer diameter of the photographing lens assembly at the lens end. The image-side surface of the second lens element may be concave in a paraxial region thereof. Therefore, it is well suited for correcting aberrations such as spherical aberration and coma, thus improving image quality.

[0019] The third lens element may have a positive refractive power. This is advantageous for converging light to reduce the size of the photographing lens assembly. The object-side surface of the third lens element may be convex in a paraxial region thereof. Therefore, it is advantageous for cooperating with the lens shape of the image-side surface of the second lens element to further correct aberrations. The image-side surface of the third lens element may be convex in a paraxial region thereof. Therefore, it is favorable for converging light to prevent inefficient light convergence at the periphery due to insufficient light redirection.

[0020] The fourth lens element can have a negative refractive power. Therefore, it is advantageous for adjusting the optical path to enlarge the image area and is also advantageous for correcting aberrations such as spherical aberration that arise during reduction.

[0021] The sixth lens element may have a positive refractive power. Therefore, it is advantageous for converging light and reducing the length of the photographing lens assembly on the image side thereof. The object-side surface of the sixth lens element may be convex in a paraxial region thereof. Therefore, it is advantageous for preventing light divergence and reducing the flange focal distance while reducing the field curvature. The image-side surface of the sixth lens element may be convex in a paraxial region thereof. Therefore, it is advantageous for correcting the field curvature and correcting the distortion of the photographing lens assembly to improve image quality.

[0022] The seventh lens element may have a negative refractive power. Therefore, it is advantageous to effectively control the flange focal distance to prevent an excessively long overall length of the lens unit. The image-side surface of the seventh lens element may be concave in a paraxial region thereof. Therefore, it is advantageous to reduce the field curvature and reduce the flange focal distance to prevent an excessively long overall length.

[0023] According to the present disclosure, the object-side surface and / or the image-side surface of the sixth lens element may have at least one inflection point. Therefore, it is advantageous for improving the aberration correction capability of the sixth lens element at the periphery thereof, and it is also advantageous for reducing the surface reflection of light from the large angle of view. Furthermore, the object-side surface of the sixth lens element may have at least one inflection point. Therefore, it is advantageous for increasing the design flexibility of the peripheral lens shape of the object-side surface of the sixth lens element, and it is also advantageous for balancing the convergence quality of the incident light from the large angle of view. Furthermore, the image-side surface of the seventh lens element has at least one inflection point.Therefore, it is advantageous to adjust the angle of incidence of light on the image surface to prevent vignetting at the edge of the image and simultaneously correct distortion. It is recommended to . Fig. 27, which shows a schematic view of an inflection point P on the object-side surface of the sixth lens element E6, the image-side surface of the sixth lens element E6, and the image-side surface of the seventh lens element E7 according to the first embodiment of the present disclosure. The above-mentioned inflection points P on the object-side surface of the sixth lens element, the image-side surface of the sixth lens element, and the image-side surface of the seventh lens element in Fig. 27 are exemplary. Each of the lens surfaces in various embodiments of the present disclosure may also have one or more inflection points.

[0024] According to the present disclosure, the object-side surface and / or the image-side surface of each of the lens elements of the photographing lens assembly can be aspherical. Therefore, it is advantageous to eliminate optical design constraints and easily harmonize the optical path to achieve target specifications.

[0025] According to the present disclosure, at least four lens elements of the photographing lens assembly can be made of plastic. This can reduce manufacturing costs and effectively improve the manufacturability of aspherical lens elements.

[0026] According to the present disclosure, the photographing lens assembly may further include an aperture stop that can be arranged between the first lens element and the third lens element. Therefore, it is advantageous for effectively reducing the overall length of the photographing lens assembly and achieving a high-brightness imaging effect while maintaining the specifications of a relatively wide viewing angle for photographing and a relatively long imaging range. Furthermore, the aperture stop may also be arranged between the second lens element and the third lens element.

[0027] 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 photographing lens assembly is f, the following condition is satisfied: 1.80 < TL / f < 4.20. This is beneficial for achieving a balance between the total length and the angle of view. Furthermore, the following condition can also be satisfied: 1.80 < TL / f < 4.10. Furthermore, the following condition can also be satisfied: 1.95 < TL / f < 4.00. Furthermore, the following condition can also be satisfied: 3.08 ≤ TL / f ≤ 3.78.

[0028] When the radius of curvature of the object-side surface of the fifth lens element is R9 and the radius of curvature of the object-side surface of the sixth lens element is R11, the following condition can be satisfied: 0.00 < 100×|R11 / R9| < 23.50. Therefore, it is advantageous to coordinate the lens shapes of the object-side surface of the fifth lens element and the object-side surface of the sixth lens element, thereby facilitating the adjustment of the optical path at the image end of the photographing lens assembly and improving image quality. Furthermore, the following condition can also be satisfied: 0.00 < 100×|R11 / R9| < 22.00. Furthermore, the following condition can also be satisfied: 0.11 ≤ 100×|R11 / R9| ≤ 19.34.

[0029] When the focal length of the photographing lens assembly is f, 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 sixth lens element is f6, the following condition can be satisfied: 1.85 < (|f / f1|+|f / f6|) / |f / f4| < 12.50. Therefore, it is advantageous to adjust the refractive power of the first lens element, the fourth lens element, and the sixth lens element to balance the convergence or divergence of light from the wide angle of view, thereby improving the convergence quality at different angles of view. In addition, the following condition can also be satisfied: 1.85 < (|f / f1|+|f / f6|) / |f / f4| < 8.00. In addition, the following condition can also be satisfied: 2.05 < (|f / f1|+|f / f6|) / |f / f4| < 7.00. In addition, the following condition can also be satisfied: 2.64 ≤ (|f / f1|+|f / f6|) / |f / f4| ≤ 4.76.

[0030] When the axial distance between the first lens element and the second lens element is T12, the axial distance between the second lens element and the third lens element is T23, and the center thickness of the second lens element is CT2, the following condition can be satisfied: 0.10 < (T12 + T23) / CT2 < 1.80. This is advantageous for adjusting the arrangement space of the second lens element to reduce the size of the photographing lens array on the object side thereof. Furthermore, the following condition can also be satisfied: 0.15 < (T12 + T23) / CT2 < 1.70. Furthermore, the following condition can also be satisfied: 0.20 < (T12 + T23) / CT2 < 1.70. Furthermore, the following condition can also be satisfied: 0.62 ≤ (T12 + T23) / CT2 ≤ 1.29.

[0031] When the radius of curvature of the object-side surface of the first lens element is R1, the radius of curvature of the object-side surface of the sixth lens element is R11, and the focal length of the photographing lens assembly is f, the following condition can be satisfied: 0.50 < (|R1| + |R11|) / f < 10.00. Therefore, it is advantageous to adjust the ratio of the total focal length with respect to the radius of curvature of the object-side surface of the first lens element and the radius of curvature of the object-side surface of the sixth lens element so that the two lens surfaces have relatively curved lens shapes, thereby effectively controlling the optical path and thus enlarging the image area. In addition, the following condition can also be satisfied: 0.80 < (IR11 + IR111) / f < 7.00. In addition, the following condition can also be satisfied: 1.30 < (|R1|+|R11|) / f < 6.30. In addition, the following condition can also be satisfied: 1.80 ≤ (|R1|+|R11|) / f ≤ 4.08.

[0032] When the axial distance between the first lens element and the second lens element is T12, the axial distance between the second lens element and the third lens element is T23, 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: (T23+T34) / (T12+T45) < 1.85. Therefore, it is advantageous to balance the spatial arrangement of the lens elements in order to reduce the sensitivity of the photographing lens assembly. In addition, the following condition can also be satisfied: 0.05 < (T23+T34) / (T12+T45) < 1.68. In addition, the following condition can also be satisfied: 0.17 ≤ (T23+T34) / (T12+T45) ≤ 0.68.

[0033] When the sum of the center thicknesses of all lens elements of the photographing lens array is ΣAT and the sum of the axial distances between all adjacent lens elements of the photographing lens array is ΣAT, the following condition can be satisfied: 2.65 < ΣCT / ΣAT < 10.00. Therefore, it is advantageous to arrange all lens elements closely to effectively utilize the space. Furthermore, the following condition can also be satisfied: 2.75 < ΣCT / ΣAT < 9.50. Furthermore, the following condition can also be satisfied: 2.90 ≤ ΣCT / ΣAT ≤ 5.11.

[0034] When the focal length of the fifth lens element is f5 and the focal length of the sixth lens element is f6, the following condition can be satisfied: 0.00 ≤ |f6 / f5| < 0.55. Therefore, it is advantageous to balance the overall refractive power of the photographing lens assembly and correct aberrations and distortions by controlling the refractive ratio of the fifth and sixth lens elements. Furthermore, the following condition can also be satisfied: 0.00 ≤ |f6 / f5| < 0.48. Furthermore, the following condition can also be satisfied: 0.00 ≤ |f6 / f5| ≤ 0.38.

[0035] When the focal length of the photographing lens assembly is f, and an axial distance between the object-side surface of the first lens element and the image-side surface of the seventh lens element is TD, the following condition can be satisfied: 1.85 < 10×f / TD < 3.90. Therefore, it is advantageous to effectively reduce the size of the lens unit to prevent an excessively long overall length u. In addition, the following condition can also be satisfied: 2.50 < 10×f / TD < 3.80. In addition, the following condition can also be satisfied: 2.80 < 10×f / TD < 3.70. In addition, the following condition can also be satisfied: 3.08 ≤ 10×f / TD ≤ 3.82.

[0036] When a center thickness of the first lens element is CT1, the center thickness of the second lens element is CT2, the center thickness of the fourth lens element is CT4, and the center thickness of the fifth lens element is CT5, the following condition can be satisfied: 1.40 < (CT2 + CT5) / (CT1 + CT4). Therefore, it is advantageous to adjust the arrangement space of the lens elements to reduce the manufacturing tolerance. In addition, the following condition can also be satisfied: 1.40 < (CT2 + CT5) / (CT1 + CT4) < 4.60. Furthermore, the following condition can also be satisfied: 1.50 < (CT2 + CT5) / (CT1 + CT4) < 3.00. Furthermore, the following condition can also be satisfied: 1.72 ≤ (CT2 + CT5) / (CT1 + CT4) ≤ 2.12.

[0037] When the center thickness of the fifth lens element is CT5 and the center thickness of the sixth lens element is CT6, the following condition can be satisfied: 0.80 < CT6 / CT5 < 3.50. Therefore, it is advantageous to adjust the ratio of the center thicknesses of the fifth and sixth lens elements to balance the refractive power arrangement of the fifth and sixth lens elements, thereby harmonizing the optical path of the photographing lens assembly on its image side. Furthermore, the following condition can also be satisfied: 0.90 < CT6 / CT5 < 3.00.

[0038] When the focal length of the photographing lens assembly is f, and the combined focal length of the third lens element and the fourth lens element is f34, the following condition can be satisfied: 0.25 < |f / f34| < 1.25. Therefore, it is advantageous to adjust the refractive power of the third and fourth lens elements to harmonize the deflection direction of light from a wide angle of view. Furthermore, the following condition can also be satisfied: 0.25 < |f / f34| < 1.00.

[0039] When the radius of curvature of the object-side surface of the sixth lens element is R11, the radius of curvature of the image-side surface of the sixth lens element is R12, and the focal length of the photographing lens assembly is f, the following condition can be satisfied: 0.50 < (|R11| + |R12|) / f < 15.00. Therefore, it is advantageous to ensure a relatively strong radius of curvature of the lens shape of the sixth lens element, thereby converging the light and reducing the overall length. In addition, the following condition can also be satisfied: 0.80 < (|R11| + |R12|) / f < 10.00. Furthermore, the following condition can also be satisfied: 1.00 < (|R11| + |R12|) / f < 5.00.

[0040] 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 first lens element is R2, the following condition can be satisfied: 0.00 < |R1+R2| / |R1-R2| < 1.50. This is beneficial for effectively balancing the radii of curvature of the object-side surface and the image-side surface of the first lens element to reduce aberrations caused by incident light from a wide angle of view. Furthermore, the following condition can also be satisfied: 0.00 < |R1+R2| / |R1-R2| < 1.20.

[0041] When the center thickness of the sixth lens element is CT6 and the center thickness of the seventh lens element is CT7, the following condition can be met: 0.30 < CT7 / CT6 < 1.05. This is beneficial for reducing the manufacturing tolerance and thus the yield.

[0042] When the focal length of the first lens element is f1 and the focal length of the third lens element is f3, the following condition can be met: 0.10 < |f1 / f3| < 5.00. Therefore, it is advantageous to effectively balance the refractive power of the first and third lens elements, thereby increasing the photographic viewing angle and correcting off-axis aberrations. Furthermore, the following condition can also be met: 0.50 < |f1 / f3| < 4.00.

[0043] When the radius of curvature of the object-side surface of the seventh lens element is R13 and the radius of curvature of the image-side surface of the seventh lens element is R14, the following condition can be met: -0.30 < (R13 + R14) / (R13 - R14) < 10.00. Therefore, it is advantageous to adjust the radii of curvature of the object-side surface and the image-side surface of the seventh lens element, thereby correcting the distortion of the photographing lens assembly. Furthermore, the following condition can also be met: 0.00<(R13+R14) / (R13−R14)<8.00.

[0044] When the entrance pupil diameter of the photographing lens array is EPD and the maximum image height of the photographing lens array (which may be half the diagonal length of the effective photosensitive area of ​​the image sensor) is ImgH, the following condition can be met: 0.20 < EPD / ImgH < 0.50. Therefore, it is advantageous to increase the relative illuminance in the peripheral field of view and achieve a balance between illuminance, depth of field, and image size.

[0045] When a maximum effective radius of the object-side surface of the sixth lens element is Y6R1 and a maximum effective radius of the object-side surface of the seventh lens element is Y7R1, the following condition can be met: 1.00 < Y7R1 / Y6R1 < 1.25. Therefore, it is advantageous to adjust the optically effective radii of the object-side surface of the sixth lens element and the object-side surface of the seventh lens element, thereby preventing total internal reflection of the peripheral light due to an excessively large deflection angle. Fig. 28, which shows a schematic view of Y6R1 and Y7R1 according to the first embodiment of the present disclosure.

[0046] When a vertical distance between a critical point on the image-side surface of the seventh lens element and an optical axis is Yc72 and a maximum effective radius of the image-side surface of the sixth lens element is Y6R2, the following condition can be satisfied: 0.70 < Yc72 / Y6R2 < 1.15. Therefore, it is advantageous to increase the flexibility of the lens surfaces and thereby improve the image quality of light from a wide angle of view and the responsiveness of the image sensor. Reference is made to Fig. 27 and Fig. 28, which are schematic views showing Yc72 and Y6R2 according to the first embodiment of the present disclosure. The above-mentioned critical point C on the image-side surface of the seventh lens element in Fig.27 is exemplary. Each of the lens surfaces in various embodiments of the present disclosure may also have one or more critical points in an off-axis region thereof.

[0047] When the maximum absolute value of a distortion aberration on the image surface at different angles of view is |DIST|max, the following condition can be met: 30.0% < |DIST|max < 80.0%. Therefore, it is beneficial to effectively control image quality and thus prevent image deformation and distortion. In addition, the following condition can also be met: 35.0% < |DIST|max < 70.0%.

[0048] When the maximum angle of view of a photographing lens array is FOV, the following condition can be met: 138.0 degrees < FOV < 180.0 degrees. Therefore, it is advantageous to standardize the viewing angle specification to achieve a balance between the wide angle of view and the image quality of the photographing lens array. Furthermore, the following condition can also be met: 138.0 degrees < FOV < 170.0 degrees. Furthermore, the following condition can also be met: 140.0 degrees < FOV < 160.0 degrees.

[0049] When the axial distance between the first lens element and the second lens element is T12 and the center thickness of the third lens element is CT3, the following condition can be met: 0.10 < T12 / CT3 < 0.90. Therefore, it is advantageous to increase manufacturability and thereby even out the size distribution of the lens unit at the lens end. Furthermore, the following condition can also be met: 0.25 < T12 / CT3 < 0.90.

[0050] When the focal length of the fourth lens element is f4 and the focal length of the sixth lens element is f6, the following condition can be met: -10.50 < f4 / f6 < -1.00. Therefore, it is advantageous to combine the refractive power of the fourth and sixth lens elements to correct aberrations and astigmatism and adjust the angle of view. Furthermore, the following condition can also be met: -6.50 < f4 / f6 < -1.00.

[0051] When the radius of curvature of the object-side surface of the first lens element is R1 and a radius of curvature of the image-side surface of the second lens element is R4, the following condition can be satisfied: 0.00 < |(R1+R4) / (R1-R4)| < 2.20. Therefore, it is advantageous to adjust the radius of curvature of the object-side surface of the first lens element so that light from the wide angle of view can enter the photographing lens assembly, compensating by adjusting the radius of curvature of the image-side surface of the second lens element, thereby preventing excessive aberrations. In addition, the following condition can also be satisfied: 0.00 < |(R1+R4) / (R1-R4)| < 1.50. In addition, the following condition can also be satisfied: 0.00 < |(R1+R4) / (R1-R4)| < 0.80.

[0052] When the focal length of the first lens element is f1 and the focal length of the seventh lens element is f7, the following condition can be met: 0.00 < f1 / f7 < 1.50. Therefore, it is advantageous to adjust the refractive power of the first and seventh lens elements, thereby improving the balance of the photographing lens arrangement. Furthermore, the following condition can also be met: 0.00 < f1 / f7 < 1.30.

[0053] When the axial distance between the first lens element and the second lens element is T12, the axial distance between the second lens element and the third lens element is T23, and the center thickness of the second lens element is CT2, the following condition can be satisfied: 0.20 < T12 / (CT2+T23) < 3.00. Therefore, it is advantageous to balance the spatial arrangement of the lens elements and thus reduce the length of the photographing lens assembly at the lens end. In addition, the following condition can also be satisfied: 0.20 < T12 / (CT2+T23) < 1.50.

[0054] When the Abbe number of the second lens element is V2, the Abbe number of the fourth lens element is V4, and the Abbe number of the fifth lens element is V5, the following condition can be satisfied: 0.30 < (V2 + V4) / V5 < 1.80. Therefore, appropriate selection of the materials of the second, fourth, and fifth lens elements is beneficial for effectively correcting the chromatic aberration of the photographing lens assembly, preventing image overlap, and thus improving image quality. Furthermore, the following condition can also be satisfied: 0.50 < (V2 + V4) / V5 < 1.50.

[0055] When a displacement parallel to the optical axis from an axial vertex on the object-side surface of the seventh lens element to the position of the maximum effective radius on the object-side surface of the seventh lens element is SAG7R1, and the center thickness of the seventh lens element is CT7, the following condition can be satisfied: -2.00 < SAG7R1 / CT7 < - 0.50. Therefore, it is advantageous to compensate for the degree of curvature of the peripheral lens shape of the object-side surface of the seventh lens element, thereby increasing the viewing angle and correcting the distortion. Fig.28, which shows a schematic view of SAG7R1 according to the first embodiment of the present disclosure. When the direction from the axial vertex of a surface to the position of the maximum effective radius of the same surface is toward the image side of the photographing lens assembly, the displacement value is positive; when the direction from the axial vertex of the surface to the position of the maximum effective radius of the same surface is toward the object side of the photographing lens assembly, the displacement value is negative.

[0056] When the radius of curvature of the object-side surface of the third lens element is R5 and the radius of curvature of the image-side surface of the third lens element is R6, the following condition can be satisfied: 0.18 < (R5+R6) / (R5-R6) < 1.00. Therefore, it is advantageous to control the optical path, thereby increasing the photographic viewing angle and enlarging the image area. Furthermore, the following condition can also be satisfied: 0.25 < (R5+R6) / (R5-R6) < 1.00.

[0057] When the axial distance between the first lens element and the second lens element is T12 and the center thickness of the seventh lens element is CT7, the following condition can be met: 0.10 < T12 / CT7 < 1.35. Therefore, a constraint between the center thickness of the seventh lens element and the axial distance between the first and second lens elements is advantageous for improving space utilization and manufacturability. Furthermore, the following condition can also be met: 0.30 < T12 / CT7 < 1.28.

[0058] When the focal length of the photographing lens assembly is f and the focal length of the third lens element is f3, the following condition can be satisfied: 0.60 < |f / f3| < 2.00. Therefore, it is advantageous to have sufficient refractive power of the third lens element, which facilitates the optical path adjustment of a wide-angle lens. Furthermore, the following condition can also be satisfied: 0.70 < |f / f3| < 1.50.

[0059] When a distance parallel to an optical axis between a maximum effective radius position of the object-side surface of the sixth lens element and a maximum effective radius position of the image-side surface of the sixth lens element is ET6, and a distance parallel to the optical axis between a maximum effective radius position of the object-side surface of the seventh lens element and the maximum effective radius position of the image-side surface of the seventh lens element is ET7, the following condition can be satisfied: 2.40 < ET7 / ET6 < 6.00. Therefore, adjusting the edge thicknesses of the sixth and seventh lens elements is advantageous to support the incidence of light with the large image angle into the image surface. In addition, the following condition can also be satisfied: 2.90 < ET7 / ET6 < 5.50. Fig.28, which shows a schematic view of ET6 and ET7 according to the first embodiment of the present disclosure.

[0060] When the vertical distance between a critical point on the object-side surface of the first lens element and the optical axis is Yc11 and the vertical distance between a critical point on the object-side surface of the sixth lens element and the optical axis is Yc61, the following condition can be satisfied: 0.75 < Yc61 / Yc11 < 1.80. Therefore, it is advantageous to increase the image size and reduce the outer diameter of the lens unit, thereby preventing total internal reflection of the peripheral light. Fig.27, which shows a schematic view of Yc11 and Yc61 according to the first embodiment of the present disclosure. The above-mentioned critical points C on the object-side surface of the first lens element and the object-side surface of the sixth lens element in Fig. 27 are exemplary. Each of the lens surfaces in various embodiments of the present disclosure may also have one or more critical points in an off-axis region thereof.

[0061] According to the present disclosure, the above features and conditions can be used in various combinations to achieve corresponding effects.

[0062] According to the present disclosure, the lens elements of the photographing lens assembly can be made of either a glass or a plastic material. When the lens elements are made of a glass material, the refractive power distribution of the photographing lens assembly can be more flexible, and the influence on imaging caused by external ambient temperature changes can be reduced. The glass lens element can be manufactured by either grinding or molding. When the lens elements are made of a plastic material, manufacturing costs can be effectively reduced. Furthermore, surfaces of each lens element can be spherical or aspherical. Spherical lens elements are easy to manufacture.An aspherical lens element design allows for more control variables to eliminate aberrations and reduce the required number of lens elements, effectively shortening the overall length of the photographic lens assembly. Furthermore, the aspherical surfaces can be formed by plastic injection molding or glass molding.

[0063] According to the present disclosure, when a lens surface is aspheric, it means that the lens surface has an aspherical shape over its entire optically effective area or one or more regions thereof.

[0064] According to the present disclosure, to reduce unwanted stray light or color variations, one or more lens element materials may optionally include an additive that creates light absorption and interference effects and modifies the transmittance of the lens element in a specific wavelength range. 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 may optionally filter out light in the wavelength range of 350 nm to 450 nm to reduce excessive blue light and near-ultraviolet light, respectively, to prevent interference with the final image. The additive may be homogeneously blended with a plastic material for use in the manufacture of a blended-material lens element by injection molding. Furthermore, the additive may be applied to the lens surfaces to achieve the aforementioned effects.According to the present disclosure, each object-side surface and 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 near the optical axis, and the off-axis region refers to the region of the surface far from the paraxial region. Unless otherwise specified, specifically, when the lens element has a convex surface, this means that the surface is convex in the paraxial region thereof; when the lens element has a concave surface, this means that the surface is concave in the paraxial region thereof. Furthermore, when a power range or focal point of a lens element is undefined, this means that the power range or focal point of the lens element lies in the paraxial region thereof.

[0065] 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.

[0066] According to the present disclosure, the image surface of the photographing lens array may be flat or curved based on the corresponding image sensor, in particular, a curved surface that is concave toward the object side of the photographing lens array.

[0067] According to the present disclosure, an image capturing unit, such as a field flattener, can optionally be arranged between the lens element closest to the image side of the photographing lens assembly along the optical path and the image surface for correcting 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, including spherical, aspherical, diffractive, or Fresnel types), can be adjusted according to the design of the image capturing unit. In general, for example, a preferred image correction unit is a thin transparent element having a concave object-side surface and a planar image-side surface, and the thin transparent element is arranged near the image surface.

[0068] According to the present disclosure, at least one light deflecting element, such as a prism or a mirror, which may have a planar, spherical, aspherical, or free-form surface, may optionally be arranged between an imaged object and the image surface on the imaging beam path, so that the photographing lens arrangement can be more flexible in the spatial arrangement, and therefore the dimensions of an electronic device are not limited by the overall length of the photographing lens arrangement. Particular attention is paid to Fig. 29 and Fig. 30. Fig. 29 is a schematic view showing a configuration of a light deflecting element in a photographing lens assembly according to an embodiment of the present disclosure, and Fig. 30 shows a schematic view of another configuration of a light-directing element in a photographing lens assembly according to an embodiment of the present disclosure. In Fig. 29 and Fig. 30, the photographing lens arrangement may comprise, in the order from an imaged object (not shown in the figures) to an image surface IMG along a beam path, a first optical axis OA1, a light deflecting element LF, and a second optical axis OA2. The light deflecting element LF may be arranged between the imaged object and a lens group LG of the photographing lens arrangement as shown in Fig. 29, or may be arranged between a lens group LG of the photographing lens assembly and the image surface IMG as shown in Fig. 30 shown. In addition, Fig. 31, which shows a schematic view of a configuration of two light-directing elements in a photographing lens assembly according to an embodiment of the present disclosure. In Fig.31, the photographing lens arrangement may include, in the order from an imaged object (not shown in the figures) to an image surface IMG along a light path, a first optical axis OA1, a first light deflecting element LF1, a second optical axis OA2, a second light deflecting element LF2, and a third optical axis OA3. The first light deflecting element LF1 is arranged between the imaged object and a lens group LG of the photographing lens arrangement, the second light deflecting element LF2 is arranged between the lens group LG of the photographing lens arrangement and the image surface IMG, and the light travel direction in the first optical axis OA1 may be the same as the light travel direction in the third optical axis OA3, as shown in Fig.31. The photographing lens assembly may optionally be equipped with three or more light-directing elements, and the present disclosure is not limited to the type, quantity, and position of the light-directing elements of the embodiments disclosed in the preceding figures.

[0069] According to the present disclosure, the photographing lens assembly may include at least one diaphragm, such as an aperture diaphragm, a Lyot diaphragm, or a field diaphragm. The Lyot diaphragm or the field diaphragm is adjusted to eliminate stray light and thereby improve image quality. According to the present disclosure, an aperture diaphragm may be configured as a front diaphragm or a center diaphragm. A front diaphragm, disposed between an imaged object and the first lens element, may provide a longer distance between an exit pupil of the photographing 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 central aperture disposed between the first lens element and the image surface is advantageous for increasing the angle of view of the photographing lens assembly and thereby providing a wider field of view therefor.

[0070] According to the present disclosure, the photographing lens assembly 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 blade array or a light-shielding sheet. 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 image effects, such as depth of field or light intensity.

[0071] According to the present disclosure, the photographing lens assembly may include one or more optical elements to define the shape of light passing through the photographing lens assembly. Each optical element may be, but is not limited to, a filter, a polarizer, etc., and each optical element may be, but is not limited to, a single element, a composite component, a thin film, etc. The optical element may be located on the object side or the image side of the photographing lens assembly, or between any two adjacent lens elements to transmit light in a specific shape to meet the requirements of the application.

[0072] According to the present disclosure, the photographing lens assembly may include at least one optical lens element, an optical element, or a support having at least one surface with an anti-reflection layer. The anti-reflection layer can effectively reduce stray light caused by light reflection at the interface. The anti-reflection layer may be disposed in an optically ineffective region of an object-side 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 folding element, a prima, a mirror, etc.The carrier may be a base for supporting a lens array, a microlens arranged on an image sensor, a substrate surrounding the image sensor, a glass plate for protecting the image sensor, etc.

[0073] 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 folded by a light deflecting element, the axial optical data is also calculated along the folded optical axis.

[0074] In accordance with the above description of the present disclosure, the following specific embodiments are provided for further explanation. First embodiment

[0075] Fig. 1 shows a schematic view of an image acquisition unit according to the first embodiment of the present disclosure. Fig.Figure 2 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the first embodiment. Fig.1, the image sensing unit 1 includes the photographing lens array (the reference numeral of which is omitted) of the present disclosure and an image sensor IS. The photographing lens array includes, in order from an object side to an image side along an optical axis, a first lens element E2, a stop S1, a second lens element E2, an aperture stop ST, a third lens element E3, a stop S2, a fourth lens element E4, a fifth lens element E5, a stop S3, a sixth lens element E6, a seventh lens element E7, a filter E8, and an image surface IMG. The photographing lens array includes seven lens elements (E1, E2, E3, E4, E5, E6, and E7), with no additional lens elements disposed between any of the adjacent seven lens elements.

[0076] The first lens element E1 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof. The first lens element E1 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the first lens element E1 has two inflection points. The image-side surface of the first lens element E1 has one inflection point. The object-side surface of the first lens element E1 has a critical point in an off-axis region thereof.

[0077] The second lens element E2 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof. The second lens element E2 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the second lens element E2 has an inflection point. The third lens element E3 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is convex in a paraxial region thereof. The third lens element E3 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the third lens element E3 has an inflection point.The fourth lens element E4 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 fourth lens element E4 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The image-side surface of the fourth lens element E4 has two inflection points. The image-side surface of the fourth lens element E4 has a critical point in an off-axis region thereof.

[0078] The fifth lens element E5 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof. The fifth lens element E5 is made of a plastic material and has the object-side surface and the image-side surface, both of which are 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 three inflection points. The image-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof.

[0079] The sixth lens element E6 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is convex in a paraxial region thereof. The sixth lens element E6 is made of a plastic material and has the object-side surface and the image-side surface, both of which are 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 three inflection points. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof.

[0080] The seventh lens element E7 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof. The seventh lens element E7 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the seventh lens element E7 has two inflection points. The object-side surface of the seventh lens element E7 has two inflection points. The object-side surface of the seventh lens element E7 has a critical point in a region thereof offset from the axis. The image-side surface of the seventh lens element E7 has a critical point in a region thereof offset from the axis.

[0081] The E8 filter is made of glass and is located between the seventh lens element E7 and the image surface IMG. It does not affect the focal length of the lens assembly. The IS image sensor is located on or near the image surface IMG of the lens assembly.

[0082] The equation of the aspherical surface profiles of the above 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 A is the i-th aspherical coefficient, and in this embodiment, i may be 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, and 30, but is not limited thereto.

[0083] In the photographing lens array of the image sensing unit 1 according to the first embodiment, when a focal length of the photographing lens array is f, an F-number of the photographing lens array is Fno, and half of a maximum angle of view of the photographing lens array is HFOV, these parameters have the following values: f = 2.19 millimeters (mm), Fno = 2.03, and HFOV = 74.9 degrees.

[0084] When the maximum angle of view of the photographing lens array is FOV, the following condition is satisfied: FOV = 149.8 degrees.

[0085] 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 photographing lens array is f, the following condition is satisfied: TL / f = 3.47.

[0086] When the entrance pupil diameter of the photographing lens array is EPD and the maximum image height of the photographing lens array is ImgH, the following condition is satisfied: EPD / ImgH = 0.30.

[0087] When the focal length of the photographing lens array is f, and an axial distance between the object-side surface of the first lens element E1 and the image-side surface of the seventh lens element E7 is TD, the following condition is satisfied: 10×f / TD = 3.50.

[0088] When the focal length of the photographing lens array is f and a focal length of the third lens element E3 is f3, the following condition is satisfied: |f / f3| = 1.02.

[0089] If a focal length of the first lens element E1 is f1 and the focal length of the third lens element E3 is f3, the following condition is satisfied: f1 / f3 = 1.24.

[0090] If the focal length of the first lens element E1 is f1 and a focal length of the seventh lens element E7 is f7, the following condition is satisfied: |f1 / f7| = 0.63.

[0091] When a focal length of the fourth lens element E4 is f4 and a focal length of the sixth lens element E6 is f6, the following condition is satisfied: |f8 / f4| = -2.54.

[0092] If a focal length of the fifth lens element E5 is f5 and the focal length of the sixth lens element E6 is f6, the following condition is satisfied: |f6 / f3| = 0.37.

[0093] When a focal length of the photographing lens assembly is f, and a combined focal length of the third lens element E3 and the fourth lens element E4 is f34, the following condition is satisfied: |f / f34| = 0.67.

[0094] When the focal length of the photographing lens array is f, the focal length of the first lens element E1 is f1, the focal length of the fourth lens element E4 is f4, and the focal length of the sixth lens element E6 is f6, the following condition is satisfied: (|f / f1|+ |f / f6|) / |f / f4| = 4.43.

[0095] When a radius of curvature of the object-side surface of the first lens element E1 is R1 and a radius of curvature of the image-side surface of the first lens element E1 is R2, the following condition is satisfied: |R1+R2| / |R1-R2| = 0.07.

[0096] When the radius of curvature of the object-side surface of the first lens element E1 is R1 and a radius of curvature of the image-side surface of the second lens element E2 is R4, the following condition is satisfied: |(R1+R4) / (R1-R4)| = 0.14.

[0097] When the radius of curvature of the object-side surface of the first lens element E1 is R1, a radius of curvature of the object-side surface of the sixth lens element E6 is R11, and the focal length of the photographing lens array is f, the following condition is satisfied: (|R1|+|R11|) / f = 1.98.

[0098] When a radius of curvature of the object-side surface of the third lens element E3 is R5 and a radius of curvature of the image-side surface of the third lens element E3 is R6, the following condition is satisfied: (R5+R6) / (R5-R6) = 0.46.

[0099] When a radius of curvature of the object-side surface of the fifth lens element E5 is R9 and the radius of curvature of the object-side surface of the sixth lens element E6 is R11, the following condition is satisfied: 100× |R11 / R9| = 16.83.

[0100] When the radius of curvature of the object-side surface of the sixth lens element E6 is R11, a radius of curvature of the image-side surface of the sixth lens element E6 is R12, and the focal length of the photographing lens array is f, the following condition is satisfied: (|R1|+|R11|) / f = 1.84.

[0101] When a radius of curvature of the object-side surface of the seventh lens element E7 is R13 and a radius of curvature of the image-side surface of the seventh lens element E7 is R14, the following condition is satisfied: (R13+R14) / (R13-R14) = 2.82.

[0102] When the sum of the center thicknesses of all the lens elements of the photographing lens array is ΣAT and the sum of the axial distances between all the adjacent lens elements of the photographing lens array is ΣAT, the following condition is satisfied: ΣCT / ΣAT = 4.50. In this embodiment, the axial distance between two adjacent lens elements is a distance in a paraxial region between two adjacent lens surfaces of two adjacent lens elements. In this embodiment, ΣCT is the sum of the center thicknesses of the first lens element E1, the second lens element E2, the third lens element E3, the fourth lens element E4, the fifth lens element E5, the sixth lens element E6, and the seventh lens element E7.In this embodiment, ΣAT is a sum of axial distances between the first lens element E1 and the second lens element E2, the second lens element E2 and the third lens element E3, the third lens element E3 and the fourth lens element E4, the fourth lens element E4 and the fifth lens element E5, the fifth lens element E5 and the sixth lens element E6, and the sixth lens element E6 and the seventh lens element E7.

[0103] When the center thickness of the sixth lens element E6 is CT6 and a center thickness of the seventh lens element E7 is CT7, the following condition is satisfied: CT7 / CT6 = 0.54.

[0104] When a center thickness of the first lens element E1 is CT1, a center thickness of the second lens element E2 is CT2, a center thickness of the fourth lens element E4 is CT4, and a center thickness of the fifth lens element E5 is CT5, the following condition is satisfied: (CT2+CT5) / (CT1+CT4) = 2.12.

[0105] When an axial distance between the first lens element E1 and the second lens element E2 is T12, an axial distance between the second lens element E2 and the third lens element E3 is T23, and the center thickness of the second lens element E2 is CT2, the following condition is satisfied: T12 / (CT2+T23)=0.34.

[0106] When the axial distance between the first lens element E1 and the second lens element E2 is T12, the axial distance between the second lens element E2 and the third lens element E3 is T23, and the center thickness of the second lens element E2 is CT2, the following condition is satisfied: (T12+T23) / CT=0.68.

[0107] When the axial distance between the first lens element E1 and the second lens element E2 is T12, and a center thickness of the third lens element E3 is CT3, the following condition is satisfied: T12 / CT3 = 0.40.

[0108] When the axial distance between the first lens element E1 and the second lens element E2 is T12, and the center thickness of the seventh lens element E7 is CT7, the following condition is satisfied: T12 / CT7 = 0.65.

[0109] If the central thickness of the fifth lens element is E5 CT5 and the central thickness of the sixth lens element is E6 CT6, the following condition is satisfied: CT6 / CT5=1.70.

[0110] When the axial distance between the first lens element E1 and the second lens element E2 is T12, the axial distance between the second lens element E2 and the third lens element E3 is T23, 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, the following condition is satisfied: (T23+T34) / (T12+T45)=0.64.

[0111] When an Abbe number of the second lens element E2 is V2, an Abbe number of the fourth lens element E4 is V4, and an Abbe number of the fifth lens element E5 is V5, the following condition is satisfied: (V2+V4) / V5 = 0.84.

[0112] When a displacement parallel to the optical axis from an axial vertex on the object-side surface of the seventh lens element E7 to the position of the maximum effective radius on the object-side surface of the seventh lens element E7 is SAG7R1, and the center thickness of the seventh lens element E7 is CT7, the following condition is satisfied: SAG7R1 / CT7 = -1.30.

[0113] When a distance parallel to an optical axis between a maximum effective radius position of the object-side surface of the sixth lens element E6 and a maximum effective radius position of the image-side surface of the sixth lens element E6 is ET6, and a distance parallel to the optical axis between the maximum effective radius position of the object-side surface of the seventh lens element E7 and a maximum effective radius position of the image-side surface of the seventh lens element E7 is ET7, the following condition is satisfied: ET7 / ET6 = 4.22.

[0114] When a maximum effective radius of the object-side surface of the sixth lens element E6 is Y6R1 and the maximum effective radius of the object-side surface of the seventh lens element E7 is Y7R1, the following condition is satisfied: Y7R1 / Y6R1 = 1.14.

[0115] When a vertical distance between a critical point on the image-side surface of the seventh lens element E7 and the optical axis is Yc72 and a maximum effective radius of the image-side surface of the sixth lens element E6 is Y6R2, the following condition is satisfied: Yc72 / Y6R2 = 0.84.

[0116] When the vertical distance between a critical point on the object-side surface of the first lens element E1 and the optical axis is Yc11 and the vertical distance between a critical point on the object-side surface of the sixth lens element E6 and the optical axis is Yc61, the following condition is satisfied: Yc61 / Yc11 = 1.12.

[0117] When a maximum value of an absolute value of a distortion aberration on the image surface IMG at different image angles is |DIST|max, the following condition is satisfied: |DIST|max = 56.1%.

[0118] The detailed optical data of the first embodiment are shown in Table 1A and the data of the aspherical surface are shown in Table 1B. TABLE 1A 1st embodiment f = 2.19 mm, Fno = 2.03, HFOV = 74.9 deg. Area # radius of curvature thickness material index Abbé # focal length 0 object plan Infinite 1 Lens 1 -2.7083 (ASP) 0.457 plastic 1.529 45.4 -2.67 2 3.1343 (ASP) 0.702 3 aperture plan -0.300 4 Lens 2 2.2330 (ASP) 0.936 plastic 1.639 23.5 7.29 5 3.5921 (ASP) 0.292 6 Aperture diaphragm plan -0.054 7 Lens 3 4.0932 (ASP) 1.005 plastic 1.544 56.0 2.15 8 -1.4959 (ASP) -0.230 9 aperture plan 0.338 10 Lens 4 -8.4403 (ASP) 0.300 plastic 1.639 23.5 -5.05 11 5.2899 (ASP) 0.141 12 Lens 5 -9.7303 (ASP) 0.672 plastic 1.544 56.0 -5.31 13 4.2070 (ASP) 0.111 14 aperture plan 0.030 15 Lens 6 1.6372 (ASP) 1.145 plastic 1.544 56.0 1.99 16 -2.4016 (ASP) 0.112 17 Lens 7 2.3992 (ASP) 0.620 plastic 1.639 23.5 -4.24 18 1.1436 (ASP) 0.500 19 filter plan 0.210 Glass 1.517 64.2 - 20 plan 0.626 21 image plan - Note: Reference wavelength is 587.6 nm (D-line). An effective radius of the aperture S1 (area 3) is 1,306 mm. An effective radius of the aperture S2 (area 9) is 0.873 mm. An effective radius of the aperture S3 (area 14) is 1,876 mm. TABLE 1B Aspherical coefficients Area # 1 2 4 5 k = 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 A4 = 2.623401861E-01 2.143050630E-01 5.759128029E-02 7.639585534E-02 A6 = -2.826883779E-01 7.818247344E-01 -2.005148875E-01 4.448736610E-01 A8 = 2.642491907E-01 -6.595480688E+00 9.244961905E-01 -7.576086351E+00 A10 = -1.949943971E-01 2.799966034E+01 -3.750843041E+00 8.714458215E+01 A12 = 1.108917131E-01 -7.985497033E+01 1.182835459E+01 -6.941311901E+02 A14 = -4.811299711E-02 1.620572509E+02 -2.806966566E+01 3.908276280E+03 A16 = 1.584440390E-02 -2.391722748E+02 4.950917142E+01 -1.575911436E+04 A18 = -3.933784005E-03 2.587850206E+02 -6.463832089E+01 4.580157813E+04 A20 = 7.275464724E-04 -2.048951416E+02 6.213927080E+01 -9. 578609649E+04 A22 = -9.818094071E-05 1.172130392E+02 -4.341833020E+01 1.423901752E+05 A24 = 9.335548496E-06 -4.712164080E+01 2.145471636E+01 -1.463761572E+05 A26 = -5.886919679E-07 1.262056657E+01 -7.109075083E+00 9.864783155E+04 A28 = 2.191328182E-08 -2.020900698E+00 1.417298019E+00 -3.910570411E+04 A30 = -3.601582675E-10 1.462922683E-01 -1.284963947E-01 6.892983840E+03 Area # 7 8 10 11 k = 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 A4 = -1.644750162E-02 3.211095417E-02 -1.722884608E-01 -1.576100744E-01 A6 = 2.326585427E+00 -3.947099420E-01 9.117841120E-02 2.693661059E-01 A8 = -4.974855117E+01 2.599049511E+00 -1.963391645E+00 -1.490682473E+00 A10 = 6.573509122E+02 -1.181120237E+01 1.502138736E+01 5.170911011E+00 A12 = -5.805156102E+03 2.812556903E+01 -6.895656233E+01 -1.035148098E+01 A14 = 3.569204881E+04 2.451594277E+01 2.152071434E+02 9.407164325E+00 A16 = -1.566651565E+05 -4.652887703E+02 -4.783552352E+02 7.946234485E+00 A18 = 4.971263907E+05 1.834799211E+03 7.654713373E+02 -3.797214740E+01 A20 = -1.141960587E+06 -4.169640338E+03 -8.743435542E+02 5.846264696E+01 A22 = 1.878728214E+06 6.142309154E+03 6.928954959E+02 -5.311846795E+01 A24 = -2.155074233E+06 -5.962976123E+03 -3.582872830E+02 3.091642720E+01 A26 = 1.634326228E+06 3.690630337E+03 1.053018812E+02 -1. 137801410E+01 A28 = -7.350461047E+05 -1.321117260E+03 -1.105516785E+01 2.422085028E+00 A30= 1.481207361E+05 2.081544975E+02 -1.053919455E+00 -2.278539822E-01 Area # 12 13 15 16 k = 0.00000E+00 0.00000E+00 -7.96754E-01 0.00000E+00 A4 = -1.427746365E-01 -5.633001748E-01 -3.723769370E-01 -7.040978898E-03 A6 = 7.284722840E-01 8.692365322E-01 6.380111355E-01 3.205656295E-01 A8 = -2.928258617E+00 -1.158577849E+00 -1.118758756E+00 -7.413113832E-01 A10 = 7.688721293E+00 3.763137203E-01 1.692794314E+00 1.343086173E+00 A12 = -1.306332534E+01 2.163816520E+00 -2.190903393E+00 -1.854682600E+00 A14 = 1.251742767E+01 -5.439124475E+00 2.294809869E+00 1.817302370E+00 A16 = -6.388331261E-01 7.242863962E+00 -1.846782215E+00 -1.251945328E+00 A18 = -1.640020721E+01 -6.439948286E+00 1.109114583E+00 6.113088800E-01 A20 = 2.476880616E+01 4.045625408E+00 -4.883129340E-01 -2.124743698E-01 A22 = -1.988002320E+01 -1.812177431E+00 1.546457735E-01 5.222145391E-02 A24 = 9.885393779E+00 5.676570593E-01 -3.418676777E-02 -8.870724155E-03 A26 = -3.055390374E+00 -1.181316455E-01 4.998036154E-03 9.910420652E-04 A28 = 5.404122317E-01 1.464465720E-02 -4.336898554E-04 -6.554349043E-05 A30= -4.193317937E-02 -8.161604735E-04 1.689551809E-05 1.945095549E-06 Area # 17 18 k = 0.00000E+00 -1.00785E+00 A4 = -3.519994282E-01 -3.392010880E-01 A6 = 6.149612793E-01 2.593590285E-01 A8 = -1.349692595E+00 -1.574754794E-01 A10 = 2.369514648E+00 5.797950933E-02 A12 = -2.992325697E+00 -5.408616736E-03 A14 = 2.658645802E+00 -6.245990380E-03 A16 = -1.671399055E+00 3.802540825E-03 A18 = 7.495400575E-01 -1.162663313E-03 A20 = -2.402223026E-01 2.279461732E-04 A22 = 5.454532860E-02 -3.023932672E-05 A24 = -8.563300185E-03 2.714066448E-06 A26 = 8.835719449E-04 -1.584382007E-07 A28 = -5.388644467E-05 5.441717240E-09 A30 = 1.471400807E-06 -8.356110665E-11

[0119] Table 1A shows the radius of curvature, thickness, and focal length in millimeters (mm). Surface numbers 0-21 represent the surfaces arranged sequentially along the optical axis from the object side to the image side. In Table 1B, k represents the conic coefficient of the aspherical surface profile equation. A4-A30 represent the aspherical coefficients from the 4th to the 30th order. The tables shown below for each embodiment are the corresponding schematic parameters and aberration curves, and the definitions of the tables are the same as in Table 1A and Table 1B of the first embodiment. Therefore, no further explanation is given. Second embodiment

[0120] Fig. 3 shows a schematic view of an image acquisition unit according to the second embodiment of the present disclosure. Fig. Figure 4 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the second embodiment. Fig.3, the image sensing unit 2 includes the photographing lens array (the reference numeral of which is omitted) of the present disclosure and an image sensor IS. The photographing lens array includes, in order from an object side to an image side along an optical axis, a first lens element E2, a stop S1, a second lens element E2, an aperture stop ST, a third lens element E3, a stop S2, a fourth lens element E4, a fifth lens element E5, a stop S3, a sixth lens element E6, a seventh lens element E7, a filter E8, and an image surface IMG. The photographing lens array includes seven lens elements (E1, E2, E3, E4, E5, E6, and E7), with no additional lens elements disposed between any of the adjacent seven lens elements.

[0121] The first lens element E1 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof. The first lens element E1 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the first lens element E1 has two inflection points. The image-side surface of the first lens element E1 has one inflection point. The object-side surface of the first lens element E1 has a critical point in an off-axis region thereof.

[0122] The second lens element E2 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof. The second lens element E2 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the second lens element E2 has an inflection point. The third lens element E3 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is convex in a paraxial region thereof. The third lens element E3 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the third lens element E3 has an inflection point.The fourth lens element E4 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 fourth lens element E4 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The image-side surface of the fourth lens element E4 has two inflection points. The image-side surface of the fourth lens element E4 has a critical point in an off-axis region thereof.

[0123] The fifth lens element E5 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof. The fifth lens element E5 is made of a plastic material and has the object-side surface and the image-side surface, both of which are 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 object-side surface of the fifth lens element E5 has two critical points in a region thereof offset from the axis. The image-side surface of the fifth lens element E5 has one critical point in a region thereof offset from the axis.

[0124] The sixth lens element E6 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is convex in a paraxial region thereof. The sixth lens element E6 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the sixth lens element E6 has one inflection point. The image-side surface of the sixth lens element E6 has three inflection points. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof. The seventh lens element E7 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof.The seventh lens element E7 is made of a plastic material and has both an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the seventh lens element E7 has two inflection points.

[0125] 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 a region thereof offset from the axis. The image-side surface of the seventh lens element E7 has a critical point in a region thereof offset from the axis.

[0126] The E8 filter is made of glass and is located between the seventh lens element E7 and the image surface IMG. It does not affect the focal length of the lens assembly. The IS image sensor is located on or near the image surface IMG of the lens assembly.

[0127] Below, the detailed optical data of the second embodiment are shown in Table 2A and the data of the aspherical surface are shown in Table 2B. TABLE 2A 2nd embodiment f= 2.15 mm, Fno = 2.00, HFOV = 74.7 deg. Area # radius of curvature thickness material index Abbé # focal length 0 object plan Infinite 1 Lens 1 -2.7156 (ASP) 0.491 plastic 1.545 56.1 -2.58 2 3.1098 (ASP) 0.739 3 aperture plan -0.288 4 Lens 2 2.4422 (ASP) 0.937 plastic 1.614 25.6 7.06 5 4.7804 (ASP) 0.185 6 Aperture diaphragm plan -0.054 7 Lens 3 4.7676 (ASP) 1.105 plastic 1.545 56.1 2.17 8 -1.4417 (ASP) -0.296 9 aperture plan 0.356 10 Lens 4 -6.4113 (ASP) 0.310 plastic 1.639 23.5 -4.48 11 5.2680 (ASP) 0.127 12 Lens 5 -13.9601 (ASP) 0.647 plastic 1.545 56.1 -5.90 13 4.2448 (ASP) 0.139 14 aperture plan 0.030 15 Lens 6 1.5997 (ASP) 1.247 plastic 1.545 56.1 2.03 16 -2.5982 (ASP) 0.108 17 Lens 7 2.2835 (ASP) 0.613 plastic 1.639 23.5 -4.24 18 1.1096 (ASP) 0.500 19 filter plan 0.210 Glass 1.517 64.2 - 20 plan 0.662 21 image plan - Note: Reference wavelength is 587.6 nm (D-line). An effective radius of the aperture S1 (area 3) is 1,337 mm. An effective radius of the aperture S2 (area 9) is 0.874 mm. An effective radius of the aperture S3 (area 14) is 1,771 mm. TABLE 2B Aspherical coefficients Area # 1 2 4 5 k = 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 A4 = 2.397738537E-01 2.737514573E-01 2.794321121E-02 1.194352576E-01 A6 = -2.408283759E-01 -1.660849436E-01 -2.604988447E-02 -2.598490643E-01 A8 = 2.178702679E-01 1.182959346E-01 -1.283879203E-01 5.734631379E+00 A10 = -1.585558499E-01 -1.608808136E+00 1.155870801E+00 -7. 841378929E+01 A12 = 8.954007143E-02 9.464286494E+00 -4.891981243E+00 6.968882741E+02 A14 = -3.858048651E-02 -2.915601569E+01 1.326922809E+01 -4.183835846E+03 A16 = 1.257228406E-02 5.690237580E+01 -2.484767390E+01 1.743705136E+04 A18 = -3.071739450E-03 -7.558835687E+01 3.294783318E+01 -5.126554178E+04 A20 = 5.554089428E-04 7.019765819E+01 -3.108949911E+01 1.068097098E+05 A22 = -7.273858457E-05 -4.565605174E+01 2.065852704E+01 -1.564169816E+05 A24 = 6.656437906E-06 2.038529879E+01 -9.397969774E+00 1.570638202E+05 A26 = -3.999113116E-07 -5.949551386E+00 2.767798017E+00 -1.027047607E+05 A28 = 1.399051623E-08 1.021097593E+00 -4.713525556E-01 3.929051923E+04 A30 = -2.115744960E-10 -7.804048970E-02 3.481286210E-02 -6.654138824E+03 Area # 7 8 10 11 k = 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 A4 = 3.284767339E-02 1.271467026E-02 -1.802096262E-01 -2.100105589E-01 A6 = 1.465329986E+00 1.844080545E-01 5.007704574E-01 6.209041547E-01 A8 = -2.578170451E+01 -3.678418028E+00 -6.703316631E+00 -3.172577742E+00 A10 = 2.651152573E+02 2.682720352E+01 4.676003849E+01 1.106788799E+01 A12 = -1.706080829E+03 -1.193730661E+02 -2.103510556E+02 -2.590022406E+01 A14 = 6.721487583E+03 3.669289375E+02 6.570484884E+02 4.116047114E+01 A16 = -1.349338677E+04 -8.474501626E+02 -1.467659393E+03 -4.199832753E+01 A18 = -6.237878234E+03 1.566829599E+03 2.355683497E+03 2.092677077E+01 A20 = 1.223273756E+05 -2.386192987E+03 -2.684200375E+03 8.076555259E+00 A22 = -3.695574877E+05 2.918488785E+03 2.106016268E+03 -2.302564983E+01 A24 = 6.039725965E+05 -2.675697104E+03 -1.070137193E+03 1.904357207E+01 A26 = -5.829304388E+05 1.674396879E+03 3.080972286E+02 -8. 579005376E+00 A28 = 3.123730157E+05 -6.253555596E+02 -3.258574972E+01 2.111041816E+00 A30 = -7.174423515E+04 1.040142432E+02 -2.482417420E+00 -2.230846209E-01 Area # 12 13 15 16 k = 0.00000E+00 0.00000E+00 -6.67543E-01 0.00000E+00 A4 = -2.042985720E-01 -5.922185024E-01 -3.790981345E-01 -3.489433293E-02 A6 = 9.551163895E-01 1.181486218E+00 6.469526115E-01 3.097076645E-01 A8 = -3.555666608E+00 -2.381386866E+00 -1.098814166E+00 -6.285799919E-01 A10 = 9.609446311E+00 3.835835565E+00 1.574209115E+00 9.255771523E-01 A12 = -1.937085929E+01 -4.523533276E+00 -1.814760233E+00 -1.013498027E+00 A14 = 3.010242968E+01 3.531388847E+00 1.624862843E+00 8.033230422E-01 A16 = -3.582335097E+01 -1.271015954E+00 -1.104232382E+00 -4.577318368E-01 A18 = 3.204364878E+01 -6.590443084E-01 5.613941390E-01 1.876138760E-01 A20 = -2.113761125E+01 1.230560663E+00 -2.107090814E-01 -5.511134760E-02 A22 = 1.004416619E+01 -8.364621121E-01 5.728840597E-02 1.142565075E-02 A24 = -3.313388655E+00 3.319918505E-01 -1.092808659E-02 -1.615438988E-03 A26 = 7.112596753E-01 -8.018803981E-02 1.381678336E-03 1.456761051E-04 A28 = -8.761321974E-02 1.094529776E-02 -1.035475151E-04 -7.314267897E-06 A30= 4.533017134E-03 -6.486218104E-04 3.464774861E-06 1.448607096E-07 Area # 17 18 k = 0.00000E+00 -9.99683E-01 A4 = -2.932461334E-01 -3.250994002E-01 A6 = 3.782738282E-01 2.486676122E-01 A8 = -6.799145771E-01 -1.686066931E-01 A10 = 1.089857836E+00 8.845967431E-02 A12 = -1.332528100E+00 -3.476273249E-02 A14 = 1.182885975E+00 1.022569458E-02 A16 = -7.598122595E-01 -2.259388673E-03 A18 = 3.546772220E-01 3.741029062E-04 A20 = -1.201349648E-01 -4.590901786E-05 A22 = 2.915891740E-02 4.084926397E-06 A24 = -4.930083937E-03 -2.537645488E-07 A26 = 5.500201655E-04 1.030706215E-08 A28 = -3.631081028E-05 -2.413924591E-10 A30 = 1.072200096E-06 2.392061427E-12

[0128] In the second embodiment, the equation for the aspherical surface profiles of the above lens elements is the same as that of the first embodiment. The definitions of these parameters shown in Table 2C are also the same as those in the first embodiment, with corresponding values ​​for the second embodiment, so no further explanation is given.

[0129] In addition, these parameters can be calculated from Table 2A and Table 2B as the following values ​​and satisfy the following conditions: TABLE 2C Schematic parameters f [mm] 2.15 (|R11|+|R12|) / f 1.96 Fno 2.00 (R13+R14) / (R13-R14) 2.89 HFOV [deg.] 74.7 ΣCT / ΣAT 5.11 FOV [deg.] 149.4 CT7 / CT6 0.49 TL / f 3.62 (CT2+CT5) / (CT1+CT4) 1.98 EPD / ImgH 0.30 T12 / (CT2+T23) 0.42 10×f / TD 3.35 (T12+T23) / CT2 0.62 |f / f3| 0.99 T12 / CT3 0.41 |f1 / f3| 1.19 T12 / CT7 0.74 f1 / f7 0.61 CT6 / CT5 1.93 f4 / f6 -2.21 (T23+T34) / (T12+T45) 0.33 |f6 / f5| 0.34 (V2+V4) / V5 0.87 |f / f34| 0.59 SAG7R1 / CT7 -1.05 (|f / f1|+|f / f6|) / |f / f4| 3.94 ET7 / ET6 3.97 |R1+R2| / |R1-R2| 0.07 Y7R1 / Y6R1 1.12 |(R1+R4) / (R1-R4)| 0.28 Yc72 / Y6R2 0.96 (|R1|+|R11|) / f 2.01 Yc61 / Yc11 1.42 (R5+R6) / (R5-R6) 0.54 |DIST|max 55.1% 100x|R11 / R9| 11.46 - - Third embodiment

[0130] Fig.5 shows a schematic view of an image acquisition unit according to the third embodiment of the present disclosure. Fig. Figure 6 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the third embodiment. Fig.5, the image sensing unit 3 includes the photographing lens array (the reference numeral of which is omitted) of the present disclosure and an image sensor IS. The photographing lens array includes, in order from an object side to an image side along an optical axis, a first lens element E2, a stop S1, a second lens element E2, an aperture stop ST, a third lens element E3, a stop S2, a fourth lens element E4, a fifth lens element E5, a stop S3, a sixth lens element E6, a seventh lens element E7, a filter E8, and an image surface IMG. The photographing lens array includes seven lens elements (E1, E2, E3, E4, E5, E6, and E7), with no additional lens elements disposed between all of the adjacent seven lens elements.

[0131] The first lens element E1 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof. The first lens element E1 is made of a plastic material and has the object-side surface and the image-side surface, both of which are 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 object-side surface of the first lens element E1 has a critical point in an off-axis region thereof.

[0132] The second lens element E2 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof. The second lens element E2 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the second lens element E2 has an inflection point. The third lens element E3 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is convex in a paraxial region thereof. The third lens element E3 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the third lens element E3 has an inflection point.The fourth lens element E4 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 fourth lens element E4 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The image-side surface of the fourth lens element E4 has two inflection points. The image-side surface of the fourth lens element E4 has a critical point in an off-axis region thereof.

[0133] The fifth lens element E5 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof. The fifth lens element E5 is made of a plastic material and has the object-side surface and the image-side surface, both of which are 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 three inflection points. The image-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof.

[0134] The sixth lens element E6 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is convex in a paraxial region thereof. The sixth lens element E6 is made of a plastic material and has the object-side surface and the image-side surface, both of which are 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 three inflection points. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof. The seventh lens element E7 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof.The seventh lens element E7 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the seventh lens element E7 has two inflection points. The object-side surface of the seventh lens element E7 has two inflection points. The object-side surface of the seventh lens element E7 has a critical point in a region thereof offset from the axis. The image-side surface of the seventh lens element E7 has a critical point in a region thereof offset from the axis.

[0135] The E8 filter is made of glass and is located between the seventh lens element E7 and the image surface IMG. It does not affect the focal length of the lens assembly. The IS image sensor is located on or near the image surface IMG of the lens assembly.

[0136] Below, the detailed optical data of the third embodiment are shown in Table 3A and the data of the aspherical surface are shown in Table 3B. TABLE 3A 3rd embodiment f= 2.11 mm, Fno = 2.10, HFOV = 76.0 deg. Area # radius of curvature thickness material index Abbé # focal length 0 object plan Infinite 1 Lens 1 -2.7252 (ASP) 0.517 plastic 1.544 56.0 -2.83 2 3.7766 (ASP) 0.674 3 aperture plan -0.250 4 Lens 2 2.7006 (ASP) 1.030 plastic 1.639 23.5 12.59 5 3.4616 (ASP) 0.325 6 Aperture diaphragm plan -0.060 7 Lens 3 3.5369 (ASP) 0.943 plastic 1.544 56.0 2.10 8 -1.5249 (ASP) -0.190 9 aperture plan 0.312 10 Lens 4 -9.4551 (ASP) 0.300 plastic 1.639 23.5 -5.61 11 5.8360 (ASP) 0.145 12 Lens 5 -9.3903 (ASP) 0.667 plastic 1.544 56.0 -5.29 13 4.2515 (ASP) 0.111 14 aperture plan 0.030 15 Lens 6 1.6898 (ASP) 1.123 plastic 1.544 56.0 2.02 16 -2.3931 (ASP) 0.133 17 Lens 7 2.3977 (ASP) 0.629 plastic 1.639 23.5 -4.41 18 1.1625 (ASP) 0.500 19 filter plan 0.210 Glass 1.517 64.2 - 20 plan 0.629 21 image plan - Note: Reference wavelength is 587.6 nm (D-line). An effective radius of the aperture S1 (area 3) is 1,290 mm. An effective radius of the aperture S2 (area 9) is 0.840 mm. An effective radius of the aperture S3 (area 14) is 1.885 mm. TABLE 3B Aspherical coefficients Area # 1 2 4 5 k = 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 A4 = 2.522881453E-01 2.437122948E-01 7.084345281E-02 8.252854151E-02 A6 = -2.465816138E-01 5.502661745E-01 -2.876725541E-01 -5.336030662E-02 A8 = 2.057680680E-01 -5.052453954E+00 1.380092478E+00 1.099157640E+00 A10 = -1.325167239E-01 2.144090531E+01 -5.925802960E+00 -1.563711472E+01 A12 = 6.405034745E-02 -6.112739054E+01 1.960131409E+01 1.409858836E+02 A14 = -2.282677349E-02 1.245753866E+02 -4.797940380E+01 -8.410536164E+02 A16 = 5.879182044E-03 -1.851993040E+02 8.592182016E+01 3.442365610E+03 A18 = -1.052092261E-03 2.021158484E+02 -1.122652437E+02 -9.841019450E+03 A20 = 1.183203069E-04 -1.614160397E+02 1.065392475E+02 1.971286884E+04 A22 = -5.341909186E-06 9.307277963E+01 -7.251960791E+01 -2.735908473E+04 A24 = -5.692148051E-07 -3.766804095E+01 3.447097217E+01 2.554728123E+04 A26 = 1.116748073E-07 1.014131754E+01 -1.085904030E+01 -1.514149279E+04 A28 = -7.500094431E-09 -1.629739765E+00 2.036606221E+00 5.065002974E+03 A30 = 1.937582976E-10 1.182025849E-01 -1.721182869E-01 -7.115851685E+02 Area # 7 8 10 11 k = 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 A4 = -1.516558240E-02 3.360631702E-02 -1.809723711E-01 -1.540292537E-01 A6 = 2.200555438E+00 -6.334738437E-01 1.323315737E-01 1.289896824E-01 A8 = -4.783010917E+01 6.930355156E+00 -2.380552188E+00 -2.910804879E-01 A10 = 6.522986689E+02 -5.485231585E+01 1.897708938E+01 -7.373327775E-01 A12 = -6.011804112E+03 3.059081636E+02 -9.244615601E+01 1.010973918E+01 A14 = 3.891750785E+04 -1.212859737E+03 3.009736325E+02 -4.358065027E+01 A16 = -1.811874732E+05 3.452954871E+03 -6.768802864E+02 1.118301600E+02 A18 = 6.135796673E+05 -7.102856668E+03 1.056466258E+03 -1.905399299E+02 A20 = -1.511689295E+06 1.053108523E+04 -1. 126515458E+03 2.232404317E+02 A22 = 2.677534308E+06 -1.109799022E+04 7.834501850E+02 -1.810134612E+02 A24 = -3.315329521E+06 8.065896034E+03 -3.140662312E+02 9.995390184E+01 A26 = 2.717584809E+06 -3.818803053E+03 4.164250021E+01 -3.590371793E+01 A28 = -1.321038623E+06 1.051507187E+03 1.580144653E+01 7.567299729E+00 A30= 2.872180657E+05 -1.263890811E+02 -5.174200800E+00 -7.101565988E-01 Area # 12 13 15 16 k = 0.00000E+00 0.00000E+00 -7.80322E-01 0.00000E+00 A4 = -1.334726534E-01 -5.348321084E-01 -3.365169112E-01 1.809790309E-02 A6 = 5.538441167E-01 7.103016535E-01 4.823267005E-01 1.484077135E-01 A8 = -2.069037523E+00 -7.354160425E-01 -7.066638837E-01 -1.401041641E-01 A10 = 5.506399930E+00 -4.691227034E-01 8.130564029E-01 -4.309922159E-02 A12 = -9.553871262E+00 3.643452752E+00 -6.975722722E-01 2.600535742E-01 A14 = 7.915943985E+00 -7.493363240E+00 4.406104506E-01 -3.320872574E-01 A16 = 6.396633643E+00 9.198718455E+00 -2.139949794E-01 2.426216817E-01 A18 = -2.779981010E+01 -7.555928042E+00 8.936989499E-02 -1. 164364559E-01 A20 = 3.892400053E+01 4.291057039E+00 -3.514201573E-02 3.860817573E-02 A22 = -3.178217023E+01 -1.688395815E+00 1.215293954E-02 -8.999372603E-03 A24 = 1.643001363E+01 4.505658015E-01 -3.168805659E-03 1.461837905E-03 A26 = -5.315261645E+00 -7.742906674E-02 5.472858983E-04 -1.586465660E-04 A28 = 9.859280457E-01 7.671169813E-03 -5.475640476E-05 1.037101780E-05 A30 = -8.023973769E-02 -3.290481245E-04 2.390633427E-06 -3.085938433E-07 Area # 17 18 k = 0.00000E+00 -1.01219E+00 A4 = -3.322260508E-01 -3.376697386E-01 A6 = 5.000197090E-01 2.697934101E-01 A8 = -1.039684468E+00 -1.940950562E-01 A10 = 1.796523861E+00 1.094971168E-01 A12 = -2.280885848E+00 -4.524077613E-02 A14 = 2.086039932E+00 1.316025430E-02 A16 = -1.373617608E+00 -2.594989283E-03 A18 = 6.506712165E-01 3.180469917E-04 A20 = -2.206673737E-01 -1.633324281E-05 A22 = 5.291615722E-02 -1.583880694E-06 A24 = -8.740772879E-03 3.745484867E-07 A26 = 9.447216831E-04 -3.190599894E-08 A28 = -6.007854200E-05 1.362428465E-09 A30 = 1.703105945E-06 -2.416936698E-11

[0137] In the third embodiment, the equation for the aspherical surface profiles of the above lens elements is the same as that of the first embodiment. The definitions of these parameters shown in Table 3C are also the same as those in the first embodiment, with corresponding values ​​for the third embodiment, so no further explanation is given.

[0138] In addition, these parameters can be calculated from Table 3A and Table 3B as the following values ​​and satisfy the following conditions: TABLE 3C Schematic parameters f [mm] 2.11 (|R11|+|R12|) / f 1.94 Fno 2.10 (R13+R14) / (R13-R14) 2.88 HFOV [deg.] 76.0 ΣCT / ΣAT 4.23 FOV [deg.] 152.0 CT7 / CT6 0.56 TL / f 3.69 (CT2+CT5) / (CT1+CT4) 2.08 EPD / ImgH 0.28 T12 / (CT2+T23) 0.33 10×f / TD 3.27 (T12+T23) / CT2 0.67 |f / f3| 1.00 T12 / CT3 0.45 |f1 / f3| 1.35 T12 / CT7 0.67 f1 / f7 0.64 CT6 / CT5 1.68 f4 / f6 -2.78 (T23+T34) / (T12+T45) 0.68 |f6 / f5| 0.38 (V2+V4) / V5 0.84 |f / f34| 0.71 SAG7R1 / CT7 -1.29 (|f / f1|+|f / f6|) / |f / f4| 4.76 ET7 / ET6 4.07 |R1+R2| / |R1-R2| 0.16 Y7R1 / Y6R1 1.13 |(R1+R4) / (R1-R4)| 0.12 Yc72 / Y6R2 0.83 (|R1|+|R11|) / f 2.10 Yc61 / Yc11 1.17 (R5+R6) / (R5-R6) 0.40 |DIST|max 58.3% 100×|R11|R9| 18.00 - - Fourth embodiment

[0139] Fig.7 shows a schematic view of an image acquisition unit according to the fourth embodiment of the present disclosure. Fig. Figure 8 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the fourth embodiment. Fig.7, the image sensing unit 4 includes the photographing lens array (the reference numeral of which is omitted) of the present disclosure and an image sensor IS. The photographing lens array includes, in order from an object side to an image side along an optical axis, a first lens element E2, a stop S1, a second lens element E2, an aperture stop ST, a third lens element E3, a stop S2, a fourth lens element E4, a fifth lens element E5, a sixth lens element E6, a stop S3, a seventh lens element E7, a filter E8, and an image surface IMG. The photographing lens array includes seven lens elements (E1, E2, E3, E4, E5, E6, and E7), with no additional lens elements disposed between all of the adjacent seven lens elements.

[0140] The first lens element E1 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 first lens element E1 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the first lens element E1 has an inflection point. The object-side surface of the first lens element E1 has a critical point in an off-axis region thereof.

[0141] The second lens element E2 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof. The second lens element E2 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the second lens element E2 has an inflection point. The third lens element E3 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is convex in a paraxial region thereof. The third lens element E3 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical.

[0142] The fourth lens element E4 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 fourth lens element E4 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The image-side surface of the fourth lens element E4 has two inflection points. The image-side surface of the fourth lens element E4 has a critical point in an off-axis region thereof.

[0143] The fifth lens element E5 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is convex in a paraxial region thereof. The fifth lens element E5 is made of a plastic material and has the object-side surface and the image-side surface, both of which are 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 two inflection points. The object-side surface of the fifth lens element E5 has two critical points in an off-axis region thereof.

[0144] The sixth lens element E6 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is convex in a paraxial region thereof. The sixth lens element E6 is made of a plastic material and has the object-side surface and the image-side surface, both of which 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. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof. The seventh lens element E7 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof.The seventh lens element E7 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the seventh lens element E7 has two inflection points. The object-side surface of the seventh lens element E7 has two inflection points. The object-side surface of the seventh lens element E7 has a critical point in a region thereof offset from the axis. The image-side surface of the seventh lens element E7 has a critical point in a region thereof offset from the axis.

[0145] The E8 filter is made of glass and is located between the seventh lens element E7 and the image surface IMG. It does not affect the focal length of the lens assembly. The IS image sensor is located on or near the image surface IMG of the lens assembly.

[0146] Below, the detailed optical data of the fourth embodiment are shown in Table 4A and the data of the aspherical surface are shown in Table 4B. TABLE 4A 4th embodiment f= 2.07 mm, Fno = 2.02, HFOV = 72.4 deg. Area # radius of curvature thickness material index Abbé # focal length 0 object plan Infinite 1 Lens 1 -2.7844 (ASP) 0.529 plastic 1.515 56.4 -3.01 2 3.7219 (ASP) 0.714 3 aperture plan -0.168 4 Lens 2 2.5212 (ASP) 0.935 plastic 1.639 23.5 14.41 5 2.9707 (ASP) 0.330 6 Aperture diaphragm plan -0.059 7 Lens 3 3.6798 (ASP) 0.948 plastic 1.544 56.0 1.98 8 -1.3858 (ASP) -0.195 9 aperture plan 0.291 10 Lens 4 -4.7219 (ASP) 0.310 plastic 1.614 25.6 -3.88 11 4.9288 (ASP) 0.085 12 Lens 5 26.3432 (ASP) 0.773 plastic 1.544 56.0 15.07 13 -11.7858 (ASP) 0.412 14 Lens 6 4.0655 (ASP) 0.905 plastic 1.544 56.0 2.87 15 -2.3392 (ASP) -0.652 16 aperture plan 0.736 17 Lens 7 2.4223 (ASP) 0.641 plastic 1.639 23.5 -4.20 18 1.1414 (ASP) 0.700 19 filter plan 0.210 Glass 1.517 64.2 - 20 plan 0.326 21 image plan - Note: Reference wavelength is 587.6 nm (D-line). An effective radius of the aperture S1 (area 3) is 1,184 mm. An effective radius of the aperture S2 (area 9) is 0.804 mm. An effective radius of the aperture S3 (area 16) is 2,018 mm. TABLE 4B Aspherical coefficients Area # 1 2 4 5 k = 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 A4 = 2.288756394E-01 1.966559400E-01 5.937972288E-02 9.413032157E-02 A6 = -2.185527975E-01 6.285048042E-01 -3.038082686E-01 -4.034706329E-01 A8 = 1.901188735E-01 -4.933553497E+00 1.958514753E+00 8.372756884E+00 A10 = -1.347765424E-01 1.939452476E+01 -1.021954302E+01 -1.092507822E+02 A12 = 7.531975487E-02 -5.072301583E+01 3.921799520E+01 9.441191689E+02 A14 = -3.262515130E-02 9.375025511E+01 -1.097124047E+02 -5.606618611E+03 A16 = 1.084903276E-02 -1.254470053E+02 2.246908615E+02 2.343222510E+04 A18 = -2.745109545E-03 1.227081662E+02 -3.380548381E+02 -6.974576103E+04 A20 = 5.220551774E-04 -8.764984711E+01 3.725463383E+02 1.480131037E+05 A22 = -7.317285260E-05 4.515151169E+01 -2.968646717E+02 -2.215652445E+05 A24 = 7.316767773E-06 -1.631139544E+01 1.663474788E+02 2.277986251E+05 A26 = -4.930996514E-07 3.915756992E+00 -6.212894331E+01 -1.525694769E+05 A28 = 2.004897139E-08 -5.602626429E-01 1.387745291E+01 5.974463062E+04 A30 = -3.711890899E-10 3.610676529E-02 -1.401612227E+00 -1.034446197E+04 Area # 7 8 10 11 k = 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 A4 = -2.727106108E-03 5.141304997E-02 -1.840396404E-01 -3.050281989E-01 A6 = 1.391532945E+00 -1.855909800E-01 5.387284683E-01 8.136091631E-01 A8 = -2.826150090E+01 2.319503834E-01 -6.893381572E+00 -3.167880452E+00 A10 = 3.648912078E+02 3.626349430E+00 5.402131898E+01 1.128033903E+01 A12 = -3.231324791E+03 -4.542876009E+01 -2.939401981E+02 -3.217788038E+01 A14 = 2.032889429E+04 2.803601454E+02 1.130808526E+03 6.848018043E+01 A16 = -9.277304350E+04 -1.090816870E+03 -3.109302227E+03 -1.021741110E+02 A18 = 3.098431895E+05 2.870417814E+03 6.152002957E+03 1.012961594E+02 A20 = -7.558126902E+05 -5.260239250E+03 -8.756149782E+03 -6.036473714E+01 A22 = 1.328198958E+06 6.749276798E+03 8.868138646E+03 1.366998829E+01 A24 = -1.632603363E+06 -5.960297291E+03 -6.223361196E+03 7.798434129E+00 A26 = 1.327838133E+06 3.455054950E+03 2.869789105E+03 -7.320554700E+00 A28 = -6.397296215E+05 -1.183382933E+03 -7.800921480E+02 2.349832352E+00 A30= 1.376813381E+05 1.812987987E+02 9.444958333E+01 -2.865835973E-01 Area # 12 13 14 15 k = 0.00000E+00 0.00000E+00 -1.27486E+00 0.00000E+00 A4 = -2.560826665E-01 -2.199923244E-01 -1.039504025E-01 -5.427424996E-02 A6 = 7.840609630E-01 1.775636251E-01 3.577530494E-01 7.932756459E-01 A8 = -2.922972767E+00 -2.705212595E-01 -1.398642477E+00 -2.629472436E+00 A10 = 1.135561707E+01 3.828627862E-01 3.363497129E+00 5.149703265E+00 A12 = -3.616974290E+01 -1.892271058E-01 -5.404125563E+00 -6.634894021E+00 A14 = 8.510635203E+01 -5.015034206E-01 6.097562303E+00 5.942341159E+00 A16 = -1.425148223E+02 1.278653809E+00 -4.967414085E+00 -3. 820299016E+00 A18 = 1.691069960E+02 -1.477764671E+00 2.958044885E+00 1.789657222E+00 A20 = -1.424014492E+02 1.042032770E+00 -1.287192312E+00 -6.115912088E-01 A22 = 8.457239873E+01 -4.757691023E-01 4.041022369E-01 1.506206528E-01 A24 = -3.465652119E+01 1.400521510E-01 -8.895126395E-02 -2.598225665E-02 A26 = 9.331045144E+00 -2.521361309E-02 1.300320095E-02 2.972721699E-03 A28 = -1.486152432E+00 2.436699967E-03 -1. 132057208E-03 -2.022193308E-04 A30= 1.061244467E-01 -8.913108827E-05 4.436431546E-05 6.178955411E-06 Area # 17 18 k = 0.00000E+00 -1.05879E+00 A4 = -3.310037263E-01 -2.569505888E-01 A6 = 9.524867731E-01 7.984228823E-02 A8 = -2.995719453E+00 4.957376485E-02 A10 = 5.901372765E+00 -8.324683929E-02 A12 = -7.630552903E+00 5.640500169E-02 A14 = 6.841527101E+00 -2.421856436E-02 A16 = -4.393944302E+00 7.249578250E-03 A18 = 2.051103406E+00 -1.563581374E-03 A20 = -6.965188351E-01 2.449709601E-04 A22 = 1.700104638E-01 -2.764666315E-05 A24 = -2.900349037E-02 2.189990309E-06 A26 = 3.276632385E-03 -1.155173531E-07 A28 = -2.198760657E-04 3.642297750E-09 A30= 6.624849944E-06 -5.191471828E-11

[0147] In the fourth embodiment, the equation for the aspherical surface profiles of the above lens elements is the same as that of the first embodiment. The definitions of these parameters shown in Table 4C are also the same as those in the first embodiment, with corresponding values ​​for the fourth embodiment, so no further explanation is given.

[0148] In addition, these parameters can be calculated from Table 4A and Table 4B as the following values ​​and satisfy the following conditions: TABLE 4C Schematic parameters f [mm] 2.07 (|R11|+|R12|) / f 3.09 Fno 2.02 (R13+R14) / (R13-R14) 2.78 HFOV [deg.] 72.4 ΣCT / ΣAT 3.37 FOV [deg.] 144.8 CT7 / CT6 0.71 TL / f 3.75 (CT2+CT5) / (CT1+CT4) 2.04 EPD / ImgH 0.29 T12 / (CT2+T23) 0.45 10×f / TD 3.17 (T12+T23) / CT2 0.87 |f / f3| 1.05 T12 / CT3 0.58 |f1 / f3| 1.52 T12 / CT7 0.85 f1 / f7 0.72 CT6 / CT5 1.17 f4 / f6 -1.35 (T23+T34) / (T12+T45) 0.58 |f6 / f5| 0.19 (V2+V4) / V5 0.88 |f / f34| 0.61 SAG7R1 / CT7 -1.12 (|f / f1|+|f / f6|) / |f / f4| 2.64 ET7 / ET6 4.41 |R1+R2| / |R1-R2| 0.14 Y7R1 / Y6R1 1.12 |(R1+R4) / (R1-R4)| 0.03 Yc72 / Y6R2 0.94 (|R1|+|R11|) / f 3.31 Yc61 / Yc11 0.93 (R5+R6) / (R5-R6) 0.45 |DIST|max 46.5% 100×|R11|R9| 15.43 - - Fifth embodiment

[0149] Fig.9 shows a schematic view of an image acquisition unit according to the fifth embodiment of the present disclosure. Fig. Figure 10 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the fifth embodiment. Fig.9, the image sensing unit 5 includes the photographing lens array (the reference numeral of which is omitted) of the present disclosure and an image sensor IS. The photographing lens array includes, in order from an object side to an image side along an optical axis, a first lens element E1, a second lens element E2, an aperture stop ST, a third lens element E3, a stop S1, a fourth lens element E4, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, a filter E8, and an image surface IMG. The photographing lens array includes seven lens elements (E1, E2, E3, E4, E5, E6, and E7), with no additional lens elements disposed between all of the adjacent seven lens elements.

[0150] The first lens element E1 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 first lens element E1 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the first lens element E1 has two inflection points. The object-side surface of the first lens element E1 has a critical point in an off-axis region thereof.

[0151] 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 a plastic material and has the object-side surface and the image-side surface, both of which are aspherical.

[0152] The third lens element E3 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is convex in a paraxial region thereof. The third lens element E3 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the third lens element E3 has an inflection point. The fourth lens element E4 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof. The fourth lens element E4 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The image-side surface of the fourth lens element E4 has an inflection point.

[0153] The image-side surface of the fourth lens element E4 has a critical point in a region thereof offset from the axis.

[0154] The fifth lens element E5 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof. The fifth lens element E5 is made of a glass material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the fifth lens element E5 has three inflection points. The image-side surface of the fifth lens element E5 has three inflection points. The object-side surface of the fifth lens element E5 has two critical points in a region thereof offset from the axis. The image-side surface of the fifth lens element E5 has one critical point in a region thereof offset from the axis.

[0155] The sixth lens element E6 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is convex in a paraxial region thereof. The sixth lens element E6 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the sixth lens element E6 has one inflection point. The image-side surface of the sixth lens element E6 has three inflection points. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof. The seventh lens element E7 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof.The seventh lens element E7 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the seventh lens element E7 has two inflection points. The object-side surface of the seventh lens element E7 has two inflection points. The object-side surface of the seventh lens element E7 has a critical point in a region thereof offset from the axis. The image-side surface of the seventh lens element E7 has a critical point in a region thereof offset from the axis.

[0156] The E8 filter is made of glass and is located between the seventh lens element E7 and the image surface IMG. It does not affect the focal length of the lens assembly. The IS image sensor is located on or near the image surface IMG of the lens assembly.

[0157] Below, the detailed optical data of the fifth embodiment are shown in Table 5A and the data of the aspherical surface are shown in Table 5B. TABLE 5A 5th embodiment f= 2.06 mm, Fno = 2.03, HFOV = 75.0 deg. Area # radius of curvature thickness material index Abbé # focal length 0 object plan Infinite 1 Lens 1 -2.7697 (ASP) 0.493 plastic 1.544 56.0 -3.69 2 7.7715 (ASP) 0.444 3 Lens 2 3.9940 (ASP) 0.935 plastic 1.650 21.8 -68.86 4 3.3286 (ASP) 0.181 5 Aperture diaphragm plan -0.014 6 Lens 3 5.2229 (ASP) 0.995 plastic 1.544 56.0 2.07 7 -1.3369 (ASP) -0.307 8 aperture plan 0.364 9 Lens 4 -5.1078 (ASP) 0.310 plastic 1.587 28.3 -4.24 10 4.9764 (ASP) 0.079 11 Lens 5 41.7785 (ASP) 0.753 Glass 1.534 55.5 83.11 12 716.4250 (ASP) 0.294 13 Lens 6 2.8402 (ASP) 1.071 plastic 1.544 56.0 2.58 14 -2.3992 (ASP) 0.113 15 Lens 7 2.2934 (ASP) 0.676 plastic 1.680 18.2 -4.69 16 1.1744 (ASP) 0.700 17 filter plan 0.210 Glass 1.517 64.2 - 18 plan 0.470 19 image plan - Note: Reference wavelength is 587.6 nm (D-line). An effective radius of the aperture S1 (area 8) is 0.877 mm. TABLE 5B Aspherical coefficients Area # 1 2 3 4 k = 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 A4 = 2.542114848E-01 2.030328394E-01 1.228180510E-01 4.398633241E-02 A6 = -2.434353135E-01 1.127733704E+00 -5.211877781E-01 3.539957675E+00 A8 = 2.080938171E-01 -8.910641070E+00 2.132817437E+00 -9.199479803E+01 A10 = -1.449813266E-01 3.776905873E+01 -6.193169659E+00 1.394839218E+03 A12 = 8.060858866E-02 -1.068273414E+02 1.276964730E+01 -1.348951104E+04 A14 = -3.548302087E-02 2.120290935E+02 -1.937778889E+01 8.769416245E+04 A16 = 1.225848247E-02 -3.016992177E+02 2.233691911E+01 -3.954640550E+05 A18 = -3.275800412E-03 3.105436565E+02 -1.990951496E+01 1.258086331E+06 A20 = 6.635338197E-04 -2.310496386E+02 1.368005473E+01 -2. 835697304E+06 A22 = -9.918177971E-05 1.228153705E+02 -7.064144817E+00 4.489571685E+06 A24 = 1.053445060E-05 -4.540407850E+01 2.618691673E+00 -4.868184698E+06 A26 = -7.487105039E-07 1.107606720E+01 -6.497696803E-01 3.432050588E+06 A28 = 3.182168180E-08 -1.601220193E+00 9.569973982E-02 -1.412674798E+06 A30 = -6.101378668E-10 1.038153953E-01 -6.281797608E-03 2.567932890E+05 Area # 6 7 9 10 k = 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 A4 = -2.314324897E-02 7.075453367E-02 -1.755017158E-01 -3.079723014E-01 A6 = 2.990497682E+00 -5.182586502E-01 4.348010829E-01 9.337554791E-01 A8 = -7.307140248E+01 2.380308393E+00 -5.932089735E+00 -5.619415734E+00 A10 = 1.061203450E+03 -1.027122181E+00 5.339350107E+01 2.690278270E+01 A12 = -1.008965699E+04 -5.392872309E+01 -3.030137515E+02 -8.725452869E+01 A14 = 6.587940031E+04 3.385994393E+02 1.152728302E+03 1.967095058E+02 A16 = -3.042220960E+05 -1.143034374E+03 -3.078911937E+03 -3.159177573E+02 A18 = 1.009399500E+06 2.541336907E+03 5.912517021E+03 3.670692023E+02 A20 = -2.416145554E+06 -3.936759413E+03 -8.214227205E+03 -3.104058730E+02 A22 = 4.137172369E+06 4.289831798E+03 8.180887270E+03 1.899028856E+02 A24 = -4.943061245E+06 -3.221664978E+03 -5.685785845E+03 -8.216476496E+01 A26 = 3.913037663E+06 1.579895658E+03 2.612710312E+03 2.391207018E+01 A28 = -1.842401750E+06 -4.515982434E+02 -7.114674816E+02 -4.207779941E+00 A30 = 3.896654648E+05 5.638349155E+01 8.669618922E+01 3.387041904E-01 Area # 11 12 13 14 k = 0.00000E+00 0.00000E+00 -4.40883E-01 0.00000E+00 A4 = -2.466136820E-01 -2.402091705E-01 -1.506111183E-01 -1.206030943E-01 A6 = 1.095608855E+00 2.957200253E-01 4.257284116E-01 8.682941505E-01 A8 = -6.381076702E+00 -7.028591944E-01 -1. 188520243E+00 -2.196463318E+00 A10 = 2.703809497E+01 1.620968975E+00 2.336583500E+00 3.610809682E+00 A12 = -7.750440303E+01 -3.075425108E+00 -3.233351226E+00 -4.107224945E+00 A14 = 1.557368028E+02 4.598460717E+00 3.201849039E+00 3.328825417E+00 A16 = -2.238116116E+02 -5.243007073E+00 -2.297707801E+00 -1.954813947E+00 A18 = 2.321045038E+02 4.453030035E+00 1.200224373E+00 8.364237823E-01 A20 = -1.737847010E+02 -2.764812304E+00 -4.544011098E-01 -2.596448596E-01 A22 = 9.301613188E+01 1.229180469E+00 1.228616576E-01 5.759476041E-02 A24 = -3.469903444E+01 -3.795003780E-01 -2.302799405E-02 -8.857001025E-03 A26 = 8.567759948E+00 7.714168050E-02 2.830094091E-03 8.926928234E-04 A28 = -1.257990605E+00 -9.279397426E-03 -2.041166319E-04 -5.274485088E-05 A30 = 8.309467379E-02 5.005019870E-04 6.509904884E-06 1.375398170E-06 Area # 15 16 k = 0.00000E+00 -1.05530E+00 A4 = -3.412353390E-01 -2.196740218E-01 A6 = 9.591171799E-01 9.975151021E-02 A8 = -2.464327502E+00 -3.339158798E-02 A10 = 4.156481123E+00 4.579334419E-03 A12 = -4.780435496E+00 2.707400911E-03 A14 = 3.875158983E+00 -2.186177025E-03 A16 = -2.257458626E+00 8.118728891E-04 A18 = 9.530402091E-01 -1.894687416E-04 A20 = -2.912863764E-01 2.950866217E-05 A22 = 6.370371687E-02 -3.084879642E-06 A24 = -9.705175698E-03 2.107645942E-07 A26 = 9.772764340E-04 -8.793521580E-09 A28 = -5.841635820E-05 1.925429379E-10 A30 = 1.568501704E-06 -1.452109948E-12

[0158] In the fifth embodiment, the equation for the aspherical surface profiles of the above lens elements is the same as that of the first embodiment. The definitions of these parameters shown in Table 5C are also the same as those in the first embodiment, with corresponding values ​​for the fifth embodiment, so no further explanation is required.

[0159] In addition, these parameters can be calculated from Table 5A and Table 5B as the following values ​​and satisfy the following conditions: TABLE 5C Schematic parameters f [mm] 2.06 (|R11|+|R12|) / f 2.54 Fno 2.03 (R13+R14) / (R13-R14) 3.10 HFOV [deg.] 75.0 ΣCT / ΣAT 4.53 FOV [deg.] 150.0 CT7 / CT6 0.63 TL / f 3.76 (CT2+CT5) / (CT1+CT4) 2.10 EPD / ImgH 0.29 T12 / (CT2+T23) 0.40 10×f / TD 3.23 (T12+T23) / CT2 0.65 |f / f3| 1.00 T12 / CT3 0.45 |f1 / f3| 1.79 T12 / CT7 0.66 f1 / f7 0.79 CT6 / CT5 1.42 f4 / f6 -1.65 (T23+T34) / (T12+T45) 0.43 |f6 / f5| 0.03 (V2+V4) / V5 0.90 |f / f34| 0.58 SAG7R1 / CT7 -0.95 (|f / f1|+|f / f6|) / |f / f4| 2.80 ET7 / ET6 4.25 |R1+R2| / |R1-R2| 0.47 Y7R1 / Y6R1 1.12 |(R1+R4) / (R1-R4)| 0.09 Yc72 / Y6R2 0.95 (|R1|+|R11|) / f 2.72 Yc61 / Yc11 1.48 (R5+R6) / (R5-R6) 0.59 |DIST|max 54.5% 100×|R11|R9| 6.80 - - Sixth embodiment

[0160] Fig.11 shows a schematic view of an image acquisition unit according to the sixth embodiment of the present disclosure. Fig. Figure 12 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the sixth embodiment. Fig.11, the image sensing unit 6 includes the photographing lens array (the reference numeral of which is omitted) of the present disclosure and an image sensor IS. The photographing lens array includes, in order from an object side to an image side along an optical axis, a first lens element E2, a stop S1, a second lens element E2, an aperture stop ST, a third lens element E3, a stop S2, a fourth lens element E4, a fifth lens element E5, a stop S3, a sixth lens element E6, a seventh lens element E7, a filter E8, and an image surface IMG. The photographing lens array includes seven lens elements (E1, E2, E3, E4, E5, E6, and E7), with no additional lens elements disposed between all of the adjacent seven lens elements.

[0161] The first lens element E1 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof. The first lens element E1 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the first lens element E1 has two inflection points. The image-side surface of the first lens element E1 has one inflection point. The object-side surface of the first lens element E1 has a critical point in an off-axis region thereof.

[0162] The second lens element E2 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof. The second lens element E2 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the second lens element E2 has an inflection point. The third lens element E3 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is convex in a paraxial region thereof. The third lens element E3 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the third lens element E3 has an inflection point.The fourth lens element E4 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 fourth lens element E4 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The image-side surface of the fourth lens element E4 has two inflection points. The image-side surface of the fourth lens element E4 has two critical points in a region thereof offset from the axis.

[0163] The fifth lens element E5 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is convex in a paraxial region thereof. The fifth lens element E5 is made of a plastic material and has the object-side surface and the image-side surface, both of which are 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 two inflection points. The object-side surface of the fifth lens element E5 has two critical points in an off-axis region thereof.

[0164] The sixth lens element E6 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is convex in a paraxial region thereof. The sixth lens element E6 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the sixth lens element E6 has one inflection point. The image-side surface of the sixth lens element E6 has three inflection points. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof. The seventh lens element E7 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof.The seventh lens element E7 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the seventh lens element E7 has two inflection points. The object-side surface of the seventh lens element E7 has two inflection points. The object-side surface of the seventh lens element E7 has a critical point in a region thereof offset from the axis. The image-side surface of the seventh lens element E7 has a critical point in a region thereof offset from the axis.

[0165] The E8 filter is made of glass and is located between the seventh lens element E7 and the image surface IMG. It does not affect the focal length of the lens assembly. The IS image sensor is located on or near the image surface IMG of the lens assembly.

[0166] Below, the detailed optical data of the sixth embodiment are shown in Table 6A and the data of the aspherical surface are shown in Table 6B. TABLE 6A 6th embodiment f= 2.16 mm, Fno = 2.02, HFOV = 74.7 deg. Area # radius of curvature thickness material index Abbé # focal length 0 object plan Infinite 1 Lens 1 -2.7622 (ASP) 0.493 plastic 1.545 56.1 -2.68 2 3.2865 (ASP) 0.740 3 aperture plan -0.296 4 Lens 2 2.5297 (ASP) 0.935 plastic 1.614 25.6 7.18 5 5.1046 (ASP) 0.181 6 Aperture diaphragm plan -0.014 7 Lens 3 6.0661 (ASP) 0.995 plastic 1. 545 56.1 2.15 8 -1.3706 (ASP) -0.307 9 aperture plan 0.364 10 Lens 4 -4.2913 (ASP) 0.310 plastic 1.639 23.5 -3.58 11 5.0328 (ASP) 0.079 12 Lens 5 47.2220 (ASP) 0.753 plastic 1. 545 56.1 35.56 13 -32.6849 (ASP) 0.335 14 aperture plan -0.041 15 Lens 6 2.9096 (ASP) 1.071 plastic 1. 545 56.1 2.68 16 -2.5572 (ASP) 0.113 17 Lens 7 2.2812 (ASP) 0.676 plastic 1.639 23.5 -4.24 18 1.0951 (ASP) 0.700 19 filter plan 0.210 Glass 1.517 64.2 - 20 plan 0.467 21 image plan - Note: Reference wavelength is 587.6 nm (D-line). An effective radius of the aperture S1 (area 3) is 1,337 mm. An effective radius of the aperture S2 (area 9) is 0.884 mm. An effective radius of the aperture S3 (area 14) is 1,849 mm. TABLE 6B Aspherical coefficients Area # 1 2 4 5 k = 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 A4 = 2.246454706E-01 2.503325671E-01 3.019664991E-02 1.098923417E-01 A6 = -2.149233881E-01 -1.659193993E-03 1.150101036E-02 -3.626024886E-01 A8 = 1.864844910E-01 -1. 147657666E+00 -4.682359081E-01 8.845612647E+00 A10 = -1.308813898E-01 5.326610515E+00 3.244834450E+00 -1.258528305E+02 A12 = 7.175429779E-02 -1.565624109E+01 -1.319896980E+01 1.149378555E+03 A14 = -3.022437629E-02 3.284607926E+01 3.593381337E+01 -7.068242733E+03 A16 = 9.696448040E-03 -5.011957843E+01 -6.864690424E+01 3.021205097E+04 A18 = -2.348787615E-03 5.560977237E+01 9.399743978E+01 -9.131738268E+04 A20 = 4.240094201E-04 -4.448042784E+01 -9.280761870E+01 1.960560579E+05 A22 = -5.583269773E-05 2.519901227E+01 6.554043666E+01 -2.964118430E+05 A24 = 5.174994651E-06 -9.794688712E+00 -3.228033047E+01 3.076565152E+05 A26 = -3.175059443E-07 2.466931563E+00 1.052499276E+01 -2.080820910E+05 A28 = 1.146302264E-08 -3.598661095E-01 -2.039849638E+00 8.234388888E+04 A30 = -1.817715447E-10 2.288241808E-02 1.777490448E-01 -1.442093353E+04 Area # 7 8 10 11 k = 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 A4 = 1.467528008E-02 5.879233614E-02 -1.556774590E-01 -3.341247053E-01 A6 = 1.868236958E+00 1.254099367E-01 2.960555385E-01 8.278928014E-01 A8 = -4.203513217E+01 -3.743170920E+00 -2.483147376E+00 -1.821149675E+00 A10 = 5.689953278E+02 3.117548724E+01 1.035993990E+01 1.344597894E+00 A12 = -5.084515400E+03 -1.779957959E+02 -3.002857337E+01 6.949048670E+00 A14 = 3.140407171E+04 7.512238603E+02 6.734625517E+01 -3.088093858E+01 A16 = -1.378895722E+05 -2.359450500E+03 -1.261368452E+02 6.862416455E+01 A18 = 4.366335888E+05 5.480106314E+03 2.056751794E+02 -1.006127490E+02 A20 = -9.995720365E+05 -9.311874947E+03 -2.854668352E+02 1.032030801E+02 A22 = 1.637735046E+06 1.137309222E+04 3.146404175E+02 -7.465351371E+01 A24 = -1.870345520E+06 -9.683779925E+03 -2. 537731670E+02 3.736727495E+01 A26 = 1.411960102E+06 5.440639031E+03 1.371410192E+02 -1.232586107E+01 A28 = -6.321260551E+05 -1.808394528E+03 -4.376060199E+01 2.411418377E+00 A30= 1.267990278E+05 2.687767046E+02 6.183187782E+00 -2.120251658E-01 Area # 12 13 15 16 k = 0.00000E+00 0.00000E+00 -2.80203E-02 0.00000E+00 A4 = -2.746401179E-01 -2.211199579E-01 -5.199861758E-02 6.952454671E-02 A6 = 6.761588626E-01 1.243239431E-01 -4.221855939E-02 -3.468205090E-02 A8 = -1.047747460E+00 -1.531271427E-01 9.228986259E-02 2.428654954E-01 A10 = 7.462411170E-01 6.086028592E-01 -6. 587952477E-02 -7.051288520E-01 A12 = 8.615864995E-01 -1.771507977E+00 -2.197905392E-02 1.187572452E+00 A14 = -2.754842587E+00 3.311039465E+00 8.411869015E-02 -1.328919434E+00 A16 = 3.075203382E+00 -4.207680432E+00 -7.994066020E-02 1.031522509E+00 A18 = -1.758958275E+00 3.769435755E+00 4.303311197E-02 -5.664125979E-01 A20 = 3.940971280E-01 -2.410776857E+00 -1.425746705E-02 2.214549769E-01 A22 = 1.154084531E-01 1.094348309E+00 2.698478155E-03 -6.124985294E-02 A24 = -9.717041324E-02 -3.439427448E-01 -1.638391593E-04 1.170735981E-02 A26 = 2.171472873E-02 7.101828021E-02 -4.174348331E-05 -1.470609511E-03 A28 = -7.853341728E-04 -8.646477374E-03 9.500819562E-06 1.091790172E-04 A30 = -2.304957877E-04 4.692945951E-04 -6.073336446E-07 -3.627946510E-06 Area # 17 18 k = 0.00000E+00 -1.07167E+00 A4 = -2.114706092E-01 -3.328686077E-01 A6 = 8.303852783E-02 2.710927849E-01 A8 = 5.584911615E-02 -1.892509797E-01 A10 = -1.898956054E-01 1.044794352E-01 A12 = 2.429981736E-01 -4.516757138E-02 A14 = -1.972174703E-01 1.524852806E-02 A16 = 1.056197051E-01 -3.988280819E-03 A18 = -3.587527622E-02 7.976994973E-04 A20 = 6.598270089E-03 -1.199266020E-04 A22 = -9.073910598E-05 1.324057961E-05 A24 = -2.523989225E-04 -1.036781189E-06 A26 = 5.794283609E-05 5.432778420E-08 A28 = -5.717363299E-06 -1.704244471E-09 A30 = 2.212856079E-07 2.414950204E-11

[0167] In the sixth embodiment, the equation for the aspherical surface profiles of the above lens elements is the same as that of the first embodiment. The definitions of these parameters shown in Table 6C are also the same as those in the first embodiment, with corresponding values ​​for the sixth embodiment, so no further explanation is given.

[0168] In addition, these parameters can be calculated from Table 6A and Table 6B as the following values ​​and satisfy the following conditions: TABLE 6C Schematic parameters f [mm] 2.16 (|R11|+|R12|) / f 2.53 Fno 2.02 (R13+R14) / (R13-R14) 2.85 HFOV [deg.] 74.7 ΣCT / ΣAT 4.53 FOV [deg.] 149.4 CT7 / CT6 0.63 TL / f 3.59 (CT2+CT5) / (CT1+CT4) 2.10 EPD / ImgH 0.30 T12 / (CT2+T23) 0.40 10×f / TD 3.39 (T12+T23) / CT2 0.65 |f / f3| 1.01 T12 / CT3 0.45 |f1 / f3| 1.24 T12 / CT7 0.66 f1 / f7 0.63 CT6 / CT5 1.42 f4 / f6 -1.33 (T23+T34) / (T12+T45) 0.43 |f6 / f5| 0.08 (V2+V4) / V5 0.87 |f / f34| 0.48 SAG7R1 / CT7 -0.92 (|f / f1|+|f / f6|) / |f / f4| 2.67 ET7 / ET6 4.34 |R1+R2| / |R1-R2| 0.09 Y7R1 / Y6R1 1.11 |(R1+R4) / (R1-R4)| 0.30 Yc72 / Y6R2 0.97 (|R1|+|R11|) / f 2.62 Yc61 / Yc11 1.20 (R5+R6) / (R5-R6) 0.63 |DIST|max 55.4% 100×|R11|R9| 6.16 - - Seventh embodiment

[0169] Fig.13 shows a schematic view of an image acquisition unit according to the seventh embodiment of the present disclosure. Fig. Figure 14 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the seventh embodiment. Fig.13, the image sensing unit 7 includes the photographing lens array (the reference numeral of which is omitted) of the present disclosure and an image sensor IS. The photographing lens array includes, in order from an object side to an image side along an optical axis, a first lens element E2, a stop S1, a second lens element E2, an aperture stop ST, a third lens element E3, a stop S2, a fourth lens element E4, a fifth lens element E5, a sixth lens element E6, a stop S3, a seventh lens element E7, a filter E8, and an image surface IMG. The photographing lens array includes seven lens elements (E1, E2, E3, E4, E5, E6, and E7), with no additional lens elements disposed between all of the adjacent seven lens elements.

[0170] The first lens element E1 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof. The first lens element E1 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the first lens element E1 has two inflection points. The image-side surface of the first lens element E1 has one inflection point. The object-side surface of the first lens element E1 has a critical point in an off-axis region thereof.

[0171] The second lens element E2 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof. The second lens element E2 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the second lens element E2 has an inflection point. The third lens element E3 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is convex in a paraxial region thereof. The third lens element E3 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the third lens element E3 has an inflection point.The fourth lens element E4 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 fourth lens element E4 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The image-side surface of the fourth lens element E4 has an inflection point. The image-side surface of the fourth lens element E4 has a critical point in an off-axis region thereof.

[0172] The fifth lens element E5 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof. The fifth lens element E5 is made of a plastic material and has the object-side surface and the image-side surface, both of which are 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 four inflection points. The image-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof.

[0173] The sixth lens element E6 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is convex in a paraxial region thereof. The sixth lens element E6 is made of a plastic material and has the object-side surface and the image-side surface, both of which are 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 three inflection points. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof.

[0174] The seventh lens element E7 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof. The seventh lens element E7 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the seventh lens element E7 has two inflection points. The object-side surface of the seventh lens element E7 has two inflection points. The object-side surface of the seventh lens element E7 has a critical point in a region thereof offset from the axis. The image-side surface of the seventh lens element E7 has a critical point in a region thereof offset from the axis.

[0175] The E8 filter is made of glass and is located between the seventh lens element E7 and the image surface IMG. It does not affect the focal length of the lens assembly. The IS image sensor is located on or near the image surface IMG of the lens assembly.

[0176] Below, the detailed optical data of the seventh embodiment are shown in Table 7A and the data of the aspherical surface are shown in Table 7B. TABLE 7A 7th embodiment f= 2.15 mm, Fno = 1.83, HFOV = 74.7 deg. Area # radius of curvature thickness material index Abbé # focal length 0 object plan Infinite 1 Lens 1 -2.6993 (ASP) 0.496 plastic 1.530 55.8 -2.91 2 3.8273 (ASP) 0.758 3 aperture plan -0.310 4 Lens 2 2.4993 (ASP) 1.007 plastic 1.639 23.5 9.70 5 3.5326 (ASP) 0.253 6 Aperture diaphragm plan -0.063 7 Lens 3 4.3472 (ASP) 1.077 plastic 1.544 56.0 2.19 8 -1.4997 (ASP) -0.284 9 aperture plan 0.347 10 Lens 4 -9.2311 (ASP) 0.311 plastic 1.639 23.5 -5.43 11 5.6341 (ASP) 0.145 12 Lens 5 -8.3101 (ASP) 0.666 plastic 1.544 56.0 -5.03 13 4.1913 (ASP) 0.145 14 Lens 6 1.6072 (ASP) 1.102 plastic 1.544 56.0 1.98 15 -2.4640 (ASP) -0.630 16 aperture plan 0.766 17 Lens 7 2.3533 (ASP) 0.629 plastic 1.614 25.6 -4.47 18 1.1377 (ASP) 0.500 19 filter plan 0.210 Glass 1.517 64.2 - 20 plan 0.678 21 image plan - Note: Reference wavelength is 587.6 nm (D-line). An effective radius of the aperture S1 (area 3) is 1,196 mm. An effective radius of the aperture S2 (area 9) is 0.883 mm. An effective radius of the aperture S3 (area 16) is 2,154 mm. TABLE 7B Aspherical coefficients Area # 1 2 4 5 k = 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 A4 = 2.436297749E-01 2.862670129E-01 4.339088089E-02 1.045260138E-01 A6 = -2.289717580E-01 -1.899515862E-01 -5.162675973E-02 -1.252311640E-01 A8 = 1.802902679E-01 1.792039621E-01 1.153171350E-01 1.235106226E+00 A10 = -1.036113776E-01 -1.164600879E+00 -1.299626166E+00 -4.122477252E+00 A12 = 3.911985660E-02 4.891507736E+00 9.021730229E+00 -3.804632476E+01 A14 = -7.016254663E-03 -1.135128065E+01 -3.539591563E+01 5.425974377E+02 A16 = -1.415678081E-03 1.651148516E+01 8.827278374E+01 -3.212695202E+03 A18 = 1.392743623E-03 -1.583227140E+01 -1.488272647E+02 1.151774006E+04 A20 = -4.747595151E-04 1.001842643E+01 1.742612729E+02 -2.722501994E+04 A22 = 9.757021659E-05 -3.963979468E+00 -1.422368005E+02 4.340910799E+04 A24 = -1.301094846E-05 8.001144106E-01 7.950346307E+01 -4.623554726E+04 A26 = 1.106595076E-06 1.231619568E-02 -2.903322683E+01 3.150624978E+04 A28 = -5.478726506E-08 -3.965710717E-02 6.243064688E+00 -1.240299357E+04 A30= 1.205046705E-09 5.653499932E-03 -5.995920567E-01 2.141634063E+03 Area # 7 8 10 11 k = 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 A4 = 4.015786092E-02 2.772637426E-02 -1.575825508E-01 -1.349257898E-01 A6 = -1.401646975E-03 -2.290398651E-01 7.003590439E-02 1.187367205E-01 A8 = 9.571283308E+00 -4.179203493E-03 -2.594533109E+00 -9.957003287E-01 A10 = -2.328286094E+02 1.141616772E+01 2.320033465E+01 4.563717382E+00 A12 = 2.778651226E+03 -1.027396629E+02 -1.202019075E+02 -1.254305663E+01 A14 = -2.040545341E+04 5.235032946E+02 4.222757320E+02 2.275319923E+01 A16 = 9.992779289E+04 -1.805883437E+03 -1.069826578E+03 -2.857247650E+01 A18 = -3.385850156E+05 4.425962822E+03 1.999046414E+03 2.672643582E+01 A20 = 8.051319622E+05 -7.791922808E+03 -2.757162762E+03 -2.069481832E+01 A22 = -1.339546947E+06 9.769543240E+03 2.762536715E+03 1.409070487E+01 A24 = 1.525767757E+06 -8.494225374E+03 -1.944752630E+03 -7. 852202938E+00 A26 = -1.132207623E+06 4.855946109E+03 9.066333351E+02 3.086766081E+00 A28 = 4.924236073E+05 -1.637971936E+03 -2.499723807E+02 -7.226542223E-01 A30 = -9.507386076E+04 2.465201245E+02 3.071055852E+01 7.447751929E-02 Area # 12 13 14 15 k = 0.00000E+00 0.00000E+00 -7.66017E-01 0.00000E+00 A4 = -1.116365598E-01 -5.452819729E-01 -3.512365229E-01 -5.168897000E-02 A6 = 4.588062140E-01 9.264562607E-01 6.148891487E-01 5.672828225E-01 A8 = -1.632566369E+00 -2.140095602E+00 -1.302353185E+00 -1.411013217E+00 A10 = 2.581693611E+00 4.725138916E+00 2.419761308E+00 2.415223261E+00 A12 = 3.390767047E+00 -8.882572832E+00 -3. 549197694E+00 -2.988888387E+00 A14 = -2.782212918E+01 1.324470483E+01 3.905599922E+00 2.667555170E+00 A16 = 7.108800165E+01 -1.496916399E+01 -3.164591840E+00 -1.723224325E+00 A18 = -1.071931316E+02 1.251733113E+01 1.875853057E+00 8.086572222E-01 A20 = 1.060574662E+02 -7.612819862E+00 -8.078401306E-01 -2.750014298E-01 A22 = -7.089371245E+01 3.301017479E+00 2.491584921E-01 6.694588823E-02 A24 = 3.183585119E+01 -9.893247248E-01 -5.351158172E-02 -1.135371445E-02 A26 = -9.228693272E+00 1.940271009E-01 7.588371782E-03 1.272523642E-03 A28 = 1.563656229E+00 -2.234000242E-02 -6.379629409E-04 -8.464533966E-05 A30= -1.178221628E-01 1. 142176044E-03 2.406100588E-05 2.528786214E-06 Area # 17 18 k = 0.00000E+00 -1.00258E+00 A4 = -3.662615010E-01 -3.564558188E-01 A6 = 6.475423138E-01 3.362637604E-01 A8 = -1.195600564E+00 -2.872301032E-01 A10 = 1.701064540E+00 1.896366916E-01 A12 = -1.788908692E+00 -9.341004948E-02 A14 = 1.373961020E+00 3.410779160E-02 A16 = -7.712798886E-01 -9.216594264E-03 A18 = 3.169764975E-01 1.836653452E-03 A20 = -9.504296272E-02 -2.677053525E-04 A22 = 2.052638833E-02 2.808155525E-05 A24 = -3.105855579E-03 -2.057943566E-06 A26 = 3.121203262E-04 9.978564236E-08 A28 = -1.869241026E-05 -2.871487784E-09 A30 = 5.043753572E-07 3.707573517E-11

[0177] In the seventh embodiment, the equation for the aspherical surface profiles of the above lens elements is the same as that of the first embodiment. The definitions of these parameters shown in Table 7C are also the same as those in the first embodiment, with corresponding values ​​for the seventh embodiment, so no further explanation is given.

[0178] In addition, these parameters can be calculated from Table 7A and Table 7B as the following values ​​and satisfy the following conditions: TABLE 7C Schematic parameters f [mm] 2.15 (|R11|+|R12|) / f 1.89 Fno 1.83 (R13+R14) / (R13-R14) 2.87 HFOV [deg.] 74.7 ΣCT / ΣAT 4.69 FOV [deg.] 149.4 CT7 / CT6 0.57 TL / f 3.63 (CT2+CT5) / (CT1+CT4) 2.07 EPD / ImgH 0.33 T12 / (CT2+T23) 0.37 10×f / TD 3.35 (T12+T23) / CT2 0.63 |f / f3| 0.98 T12 / CT3 0.42 |f1 / f3| 1.33 T12 / CT7 0.71 f1 / f7 0.65 CT6 / CT5 1.65 f4 / f6 -2.75 (T23+T34) / (T12+T45) 0.43 |f6 / f5| 0.39 (V2+V4) / V5 0.84 |f / f34| 0.65 SAG7R1 / CT7 -1.15 (|f / f1|+|f / f6|) / |f / f4| 4.62 ET7 / ET6 4.22 |R1+R2| / |R1-R2| 0.17 Y7R1 / Y6R1 1.13 |(R1+R4) / (R1-R4)| 0.13 Yc72 / Y6R2 0.89 (|R1|+|R11|) / f 2.00 Yc61 / Yc11 1.25 (R5+R6) / (R5-R6) 0.49 |DIST|max 55.1% 100×|R11|R9| 19.34 - - Eighth embodiment

[0179] Fig. 15 shows a schematic view of an image acquisition unit according to the eighth embodiment of the present disclosure. Fig. Fig. 16 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit according to the eighth embodiment. Fig.15, the image sensing unit 8 includes the photographing lens array (the reference numeral of which is omitted) of the present disclosure and an image sensor IS. The photographing lens array includes, in order from an object side to an image side along an optical axis, a first lens element E2, a stop S1, a second lens element E2, an aperture stop ST, a third lens element E3, a stop S2, a fourth lens element E4, a fifth lens element E5, a stop S3, a sixth lens element E6, a seventh lens element E7, a filter E8, and an image surface IMG. The photographing lens array includes seven lens elements (E1, E2, E3, E4, E5, E6, and E7), with no additional lens elements disposed between all of the adjacent seven lens elements.

[0180] The first lens element E1 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof. The first lens element E1 is made of a plastic material and has the object-side surface and the image-side surface, both of which are 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 object-side surface of the first lens element E1 has a critical point in an off-axis region thereof.

[0181] The second lens element E2 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof. The second lens element E2 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the second lens element E2 has an inflection point. The third lens element E3 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is convex in a paraxial region thereof. The third lens element E3 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the third lens element E3 has an inflection point.The fourth lens element E4 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof. The fourth lens element E4 is made of a plastic material and has the object-side surface and the image-side surface, both of which are 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. The object-side surface of the fourth lens element E4 has a critical point in an off-axis region thereof. .

[0182] The fifth lens element E5 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof. The fifth lens element E5 is made of a plastic material and has the object-side surface and the image-side surface, both of which are 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 two inflection points. The object-side surface of the fifth lens element E5 has two critical points in a region thereof offset from the axis. The image-side surface of the fifth lens element E5 has one critical point in a region thereof offset from the axis.

[0183] The sixth lens element E6 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is convex in a paraxial region thereof. The sixth lens element E6 is made of a plastic material and has the object-side surface and the image-side surface, both of which 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. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof. The seventh lens element E7 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof.The seventh lens element E7 is made of a plastic material and has the object-side surface and the image-side surface, both of which are 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 image-side surface of the seventh lens element E7 has a critical point in a region thereof offset from the axis.

[0184] The E8 filter is made of glass and is located between the seventh lens element E7 and the image surface IMG. It does not affect the focal length of the lens assembly. The IS image sensor is located on or near the image surface IMG of the lens assembly.

[0185] Below, the detailed optical data of the eighth embodiment are shown in Table 8A and the data of the aspherical surface are shown in Table 8B. TABLE 8A 8th embodiment f = 2.38 mm, Fno = 2.04, HFOV = 74.3 deg. Area # radius of curvature thickness material index Abbé # focal length 0 object plan Infinite 1 Lens 1 -2.7598 (ASP) 0.508 plastic 1.54 4 56.0 -2.94 2 4.0434 (ASP) 0.615 3 aperture plan -0.100 4 Lens 2 4.1012 (ASP) 0.478 plastic 1.63 9 23.5 13.19 5 7.6290 (ASP) 0.168 6 Aperture diaphragm plan -0.066 7 Lens 3 5.6063 (ASP) 1.018 plastic 1.54 4 56.0 2.28 8 -1.4930 (ASP) -0.263 9 aperture plan 0.293 10 Lens 4 6.1745 (ASP) 0.247 plastic 1.63 9 23.5 -5.28 11 2.1464 (ASP) 0.242 12 Lens 5 1381.424 7 (ASP) 0.817 plastic 1.54 4 56.0 -19.00 13 10.2556 (ASP) 0.166 14 aperture plan 0.030 15 Lens 6 1.5267 (ASP) 1.128 plastic 1.54 4 56.0 2.29 16 -4.9882 (ASP) 0.325 17 Lens 7 -14.0714 (ASP) 0.626 plastic 1.63 9 23.5 -2.69 18 1.9911 (ASP) 0.500 19 filter plan 0.210 Glass 1.51 7 64.2 - 20 plan 0.386 21 image plan - Note: Reference wavelength is 587.6 nm (D-line). An effective radius of the aperture S1 (area 3) is 1,018 mm. An effective radius of the aperture S2 (area 9) is 0.902 mm. An effective radius of the aperture S3 (area 14) is 1,771 mm. TABLE 8B Aspherical coefficients Area # 1 2 4 5 k = 0.00000E+00 0.00000E+00 -5.92231E+00 6.28726E+01 A4 = 2.645111943E-01 3.707054166E-01 5.876153954E-02 9.300353986E-02 A6 = -2.480237017E-01 -2.587659096E-01 -1.115296298E-01 -1.866203664E-01 A8 = 2.178277342E-01 9.297308812E-01 2.001331290E-01 8.381612449E-01 A10 = -1.560028147E-01 -5.231044549E+00 -3.438355770E-01 -4.957433485E+00 A12 = 8.626038434E-02 2.001334319E+01 1.509731561E-01 1.716350311E+01 A14 = -3.589392517E-02 -4.758395904E+01 4.365230500E-01 -3.581131020E+01 A16 = 1.104795043E-02 7.242557731E+01 -7.986186987E-01 4.500124885E+01 A18 = -2.463624230E-03 -7.088832198E+01 5.394180187E-01 -3.144216155E+01 A20 = 3.852712086E-04 4.316544741E+01 -1.373196174E-01 9.433764219E+00 A22 = -3.993677013E-05 -1.485310021E+01 - - A24 = 2.458180439E-06 2.196121467E+00 - - A26 = -6.787713102E-08 - - - Area # 7 8 10 11 k= 1.99871E+01 -1.34053E+00 1.86704E+01 -6.26812E+00 A4 = 6.633696601E-02 1.181693512E-01 -1.181634321E-01 -2.015220529E-01 A6 = 4.474086587E-01 -4.738447771E-01 7.349061289E-02 6.542260114E-01 A8 = -5.979818937E+00 7.170206358E-01 -7.746172065E-01 -2.012013578E+00 A10 = 3.969759218E+01 -4.505984732E-01 2.491573940E+00 4.541118615E+00 A12 = -1.719374436E+02 -6.379696207E-01 -4.801925883E+00 -7.492476453E+00 A14 = 5.022799376E+02 1.524529224E+00 5.722068708E+00 9.001186280E+00 A16 = -9.991704422E+02 -1.195108623E+00 -4.157885532E+00 -7.752756414E+00 A18 = 1.338972267E+03 3.444069266E-01 1.677573007E+00 4.648126474E+00 A20 = -1.162022916E+03 - -2.846833395E-01 -1. 837429006E+00 A22 = 5.929664734E+02 - - 4.297177095E-01 A24 = -1.357971240E+02 - - -4.497595362E-02 Area # 12 13 15 16 k = 0.00000E+00 0.00000E+00 -1.17014E+01 0.00000E+00 A4 = -7.302092886E-02 -3.590581087E-01 1.048305388E-01 6.309338706E-02 A6 = 2.198015138E-01 3.809240389E-01 -4.113166804E-01 -8.817417334E-02 A8 = -5.164608293E-01 -3.156966886E-01 9.069503689E-01 -1.150874518E-02 A10 = 9.079119400E-01 -2.464572219E-01 -1.506050269E+00 1.920280336E-01 A12 = -1.157617558E+00 1.523797676E+00 1.842123270E+00 -3.505312718E-01 A14 = 9.950196197E-01 -3.025684363E+00 -1.652491890E+00 3.860699295E-01 A16 = -4.748600174E-01 3.692621973E+00 1.081867480E+00 -2.906535350E-01 A18 = 1.220938089E-02 -3.040532934E+00 -5.126602261E-01 1.528644703E-01 A20 = 1.334562048E-01 1.720527763E+00 1.729682124E-01 -5.591639593E-02 A22 = -8.144960201E-02 -6.595249484E-01 -4.028594144E-02 1.390215414E-02 A24 = 2.159380115E-02 1.634239100E-01 6.119081843E-03 -2.234669803E-03 A26 = -2.259532269E-03 -2.356577444E-02 -5.415609925E-04 2.089756655E-04 A28 = - 1.497151452E-03 2.098948254E-05 -8.617044172E-06 Area # 17 18 k= -3.03185E+01 -1.30605E+00 A4 = -1.614304910E-01 -2.132951586E-01 A6 = 9.458536644E-02 1.403999776E-01 A8 = -3.105362975E-01 -8.176774056E-02 A10 = 8.338085585E-01 4.586035936E-02 A12 = -1.321510871E+00 -2.205945880E-02 A14 = 1.406838842E+00 8.204960322E-03 A16 = -1.059179766E+00 -2.271652978E-03 A18 = 5.729196451E-01 4.630972250E-04 A20 = -2.226364182E-01 -6.900127299E-05 A22 = 6.140082745E-02 7.409457231E-06 A24 = -1.169194584E-02 -5.575873073E-07 A26 = 1.457793421E-03 2.787672891E-08 A28 = -1.068614410E-04 -8.308499833E-10 A30= 3.484879334E-06 1.116015525E-11

[0186] In the eighth embodiment, the equation for the aspherical surface profiles of the above lens elements is the same as that of the first embodiment. The definitions of these parameters shown in Table 8C are also the same as those in the first embodiment, with corresponding values ​​for the eighth embodiment, so no further explanation is given.

[0187] In addition, these parameters can be calculated from Table 8A and Table 8B as the following values ​​and satisfy the following conditions: TABLE 8C Schematic parameters f [mm] 2.38 (|R11|+|R12|) / f 2.74 Fno 2.04 (R13+R14) / (R13-R14) 0.75 HFOV [deg.] 74.3 ΣCT / ΣAT 3.42 FOV [deg.] 148.6 CT7 / CT6 0.55 TL / f 3.08 (CT2+CT5) / (CT1+CT4) 1.72 EPD / ImgH 0.33 T12 / (CT2+T23) 0.89 10×f / TD 3.82 (T12+T23) / CT2 1.29 |f / f3| 1.04 T12 / CT3 0.51 |f1 / f3| 1.29 T12 / CT7 0.82 f1 / f7 1.09 CT6 / CT5 1.38 f4 / f6 -2.31 (T23+T34) / (T12+T45) 0.17 |f6 / f5| 0.12 (V2+V4) / V5 0.84 |f / f34| 0.67 SAG7R1 / CT7 -1.59 (|f / f1|+|f / f6|) / |f / f4| 4.10 ET7 / ET6 4.63 |R1+R2| / |R1-R2| 0.19 Y7R1 / Y6R1 1.12 |(R1+R4) / (R1-R4)| 0.47 Yc72 / Y6R2 0.99 (|R1|+|R11|) / f 1.80 Yc61 / Yc11 1.42 (R5+R6) / (R5-R6) 0.58 |DIST|max 58.4% 100×|R11|R9| 0.11 - - Ninth embodiment

[0188] Fig. 17 shows a schematic view of an image acquisition unit according to the ninth embodiment of the present disclosure. Fig.Figure 18 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit according to the ninth embodiment. Fig.17, the image sensing unit 9 includes the photographing lens array (the reference numeral of which is omitted) of the present disclosure and an image sensor IS. The photographing lens array includes, in order from an object side to an image side along an optical axis, a first lens element E2, a stop S1, a second lens element E2, an aperture stop ST, a third lens element E3, a stop S2, a fourth lens element E4, a fifth lens element E5, a sixth lens element E6, a stop S3, a seventh lens element E7, a filter E8, and an image surface IMG. The photographing lens array includes seven lens elements (E1, E2, E3, E4, E5, E6, and E7), with no additional lens elements disposed between all of the adjacent seven lens elements.

[0189] The first lens element E1 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 first lens element E1 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the first lens element E1 has two inflection points. The object-side surface of the first lens element E1 has a critical point in an off-axis region thereof.

[0190] The second lens element E2 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof. The second lens element E2 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the second lens element E2 has an inflection point. The third lens element E3 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is convex in a paraxial region thereof. The third lens element E3 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical.

[0191] The fourth lens element E4 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and has an image-side surface that is convex in a paraxial region thereof. The fourth lens element E4 is made of a plastic material and has the object-side surface and the image-side surface, both of which are 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 two inflection points. The object-side surface of the fourth lens element E4 has three critical points in a region thereof offset from the axis. The image-side surface of the fourth lens element E4 has two critical points in a region thereof offset from the axis.

[0192] The fifth lens element E5 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 fifth lens element E5 is made of a plastic material and has the object-side surface and the image-side surface, both of which are 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 three inflection points.

[0193] The sixth lens element E6 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is convex in a paraxial region thereof. The sixth lens element E6 is made of a glass material and has the object-side surface and the image-side surface, both of which are 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 one inflection point. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof.

[0194] The seventh lens element E7 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and has an image-side surface that is concave in a paraxial region thereof. The seventh lens element E7 is made of a plastic material and has the object-side surface and the image-side surface, both of which are aspherical. The object-side surface of the seventh lens element E7 has two inflection points. The object-side surface of the seventh lens element E7 has two inflection points. The object-side surface of the seventh lens element E7 has a critical point in a region thereof offset from the axis. The image-side surface of the seventh lens element E7 has a critical point in a region thereof offset from the axis.

[0195] The E8 filter is made of glass and is located between the seventh lens element E7 and the image surface IMG. It does not affect the focal length of the lens assembly. The IS image sensor is located on or near the image surface IMG of the lens assembly.

[0196] Below, the detailed optical data of the ninth embodiment are shown in Table 9A and the data of the aspherical surface are shown in Table 9B. TABLE 9A 9th embodiment f= 2.07 mm, Fno = 2.06, HFOV = 72.4 deg. Area # radius of curvature thickness material index Abbé # focal length 0 object plan Infinite 1 Lens 1 -2.7959 (ASP) 0.491 plastic 1.511 56.8 -3.05 2 3.7268 (ASP) 0.801 3 aperture plan 0.009 4 Lens 2 2.2556 (ASP) 0.947 plastic 1.639 23.5 13.04 5 2.5871 (ASP) 0.348 6 Aperture diaphragm plan -0.081 7 Lens 3 2.9661 (ASP) 1.016 plastic 1.544 56.0 1.94 8 -1.4418 (ASP) -0.302 9 aperture plan 0.352 10 Lens 4 -3.5686 (ASP) 0.310 plastic 1.642 22.5 -5.77 11 100.0000 (ASP) 0.046 12 Lens 5 -58.5085 (ASP) 0.586 plastic 1.511 56.8 2104.02 13 -55.6761 (ASP) 0.517 14 Lens 6 5.6382 (ASP) 0.954 Glass 1.523 58.7 3.12 15 -2.1652 (ASP) -0.821 16 aperture plan 0.851 17 Lens 7 2.7518 (ASP) 0.689 plastic 1.614 25.6 -3.91 18 1.1595 (ASP) 0.700 19 filter plan 0.210 Glass 1.517 64.2 - 20 plan 0.206 21 image plan - Note: Reference wavelength is 587.6 nm (D-line). An effective radius of the aperture S1 (area 3) is 1,350 mm. An effective radius of the aperture S2 (area 9) is 0.883 mm. An effective radius of the aperture S3 (area 16) is 2,017 mm. TABLE 9B Aspherical coefficients Area # 1 2 4 5 k = 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 A4 = 2.277311377E-01 1.945487340E-01 2.920631061E-02 8.201873170E-02 A6 = -1.990576025E-01 3.459400271E-01 -1.362766339E-01 -3.722182971E-01 A8 = 1.470017920E-01 -2.451165291E+00 6.310306144E-01 7.188073407E+00 A10 = -8.204811529E-02 7.818229316E+00 -2.551916183E+00 -9.150673918E+01 A12 = 3.290912687E-02 -1.650540808E+01 7.967910784E+00 7.752213772E+02 A14 = -8.803427609E-03 2.478255287E+01 -1.897929532E+01 -4.507536145E+03 A16 = 1.239228574E-03 -2.716589958E+01 3.420564804E+01 1.839158926E+04 A18 = 7.375852847E-05 2.194838197E+01 -4.629983180E+01 -5.331590229E+04 A20 = -7.969172483E-05 -1.304579762E+01 4.654705887E+01 1.100393665E+05 A22 = 1.928595896E-05 5.628100847E+00 -3.413311878E+01 -1.600925213E+05 A24 = -2.639052553E-06 -1.711889736E+00 1.770709124E+01 1.599460014E+05 A26 = 2.195989639E-07 3.475249291E-01 -6.154367645E+00 -1.041091218E+05 A28 = -1.040513732E-08 -4.219206994E-02 1.286636847E+00 3.962779779E+04 A30 = 2.164471769E-10 2.313235337E-03 -1.225278488E-01 -6.670486743E+03 Area # 7 8 10 11 k = 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 A4 = 1.794868105E-02 1.063966005E-01 -4.183106283E-02 -1.963745311E-01 A6 = 7.205855200E-01 -1. 575097469E+00 -1.148225996E+00 8.182896250E-02 A8 = -1.261908176E+01 1.166643619E+01 4.424905368E+00 8.122212081E-01 A10 = 1.432037789E+02 -6.265683762E+01 -4.169356223E-01 -2.072795628E-01 A12 = -1.157728714E+03 2.454052178E+02 -1. 128082491E+02 -1.913412158E+01 A14 = 6.944772784E+03 -6.981480815E+02 7.400561252E+02 8.793060469E+01 A16 = -3.153401912E+04 1.428515627E+03 -2.687900128E+03 -2.075023817E+02 A18 = 1.084891130E+05 -2.048605452E+03 6.445618208E+03 3.144018726E+02 A20 = -2.791314416E+05 1.925608789E+03 -1.070080416E+04 -3.291159300E+02 A22 = 5.241545818E+05 -9.516904577E+02 1.238186858E+04 2.431755883E+02 A24 = -6.917678968E+05 -9.516148143E+01 -9.795457827E+03 -1.252569968E+02 A26 = 6.036585089E+05 4.538556268E+02 5.042430430E+03 4.286055614E+01 A28 = -3.107649542E+05 -2.597905364E+02 -1.518430949E+03 -8.742044997E+00 A30= 7.103622197E+04 5.240144293E+01 2.024186803E+02 8.017022906E-01 Area # 12 13 14 15 k = 0.00000E+00 0.00000E+00 -2. 88858E+00 0.00000E+00 A4 = -2.996739316E-01 -2.161939068E-01 -6.275548145E-02 -3.470174232E-02 A6 = 5.823391560E-01 1.311400979E-01 3.390000158E-01 7.386048499E-01 A8 = -4.112171211E-01 -1.574613973E-01 -1.747164622E+00 -2.872431735E+00 A10 = 4.070110806E+00 9.247044629E-01 4.845682969E+00 6.247513432E+00 A12 = -3.123798556E+01 -3.459269664E+00 -8.689973137E+00 -8.711725984E+00 A14 = 1.069769683E+02 7.763191963E+00 1.078853770E+01 8.332864442E+00 A16 = -2.150256020E+02 -1.156415430E+01 -9.574052968E+00 -5.663472968E+00 A18 = 2.832047203E+02 1.197942314E+01 6.154949948E+00 2.777906735E+00 A20 = -2.560563755E+02 -8.747799811E+00 -2.867699885E+00 -9.850343222E-01 A22 = 1.610493082E+02 4.472099792E+00 9.570987585E-01 2.497920181E-01 A24 = -6.956200520E+01 -1.560321846E+00 -2.226877788E-01 -4.411147313E-02 A26 = 1.973288027E+01 3.526561933E-01 3.425722356E-02 5.147200232E-03 A28 = -3.316304686E+00 -4.638461990E-02 -3.127961038E-03 -3. 564260065E-04 A30 = 2.504194999E-01 2.687885158E-03 1.282177243E-04 1.108362954E-05 Area # 17 18 k = 0.00000E+00 -1.04554E+00 A4 = -3.209492955E-01 -2.712825355E-01 A6 = 8.549980506E-01 1.118614318E-01 A8 = -2.890144779E+00 1.084443066E-02 A10 = 5.963096392E+00 -5.354819138E-02 A12 = -7.871467305E+00 4.109958504E-02 A14 = 7.077190798E+00 -1.863285249E-02 A16 = -4.493280625E+00 5.752628118E-03 A18 = 2.048662566E+00 -1.263285691E-03 A20 = -6.728481846E-01 1.997499178E-04 A22 = 1.576588344E-01 -2.260064405E-05 A24 = -2.568869092E-02 1.785458659E-06 A26 = 2.763819340E-03 -9.352433266E-08 A28 = -1.764437167E-04 2.917882848E-09 A30= 5.060196633E-06 -4.102894920E-11

[0197] In the ninth embodiment, the equation for the aspherical surface profiles of the above lens elements is the same as that of the first embodiment. The definitions of these parameters shown in Table 9C are also the same as those in the first embodiment, with corresponding values ​​for the eighth embodiment, so no further explanation is given.

[0198] In addition, these parameters can be calculated from Table 9A and Table 9B as the following values ​​and satisfy the following conditions: TABLE 9C Schematic parameters f [mm] 2.07 (|R11|+|R12|) / f 3.77 Fno 2.06 (R13+R14) / (R13-R14) 2.46 HFOV [deg.] 72.4 ΣCT / ΣAT 2.90 FOV [deg.] 144.8 CT7 / CT6 0.72 TL / f 3.78 (CT2+CT5) / (CT1+CT4) 1.91 EPD / ImgH 0.29 T12 / (CT2+T23) 0.67 10×f / TD 3.08 (T12+T23) / CT2 1.14 |f / f3| 1.07 T12 / CT3 0.80 |f1 / f3| 1.57 T12 / CT7 1.18 f1 / f7 0.78 CT6 / CT5 1.63 f4 / f6 -1.85 (T23+T34) / (T12+T45) 0.37 |f6 / f5| 0.00 (V2+V4) / V5 0.81 |f / f34| 0.76 SAG7R1 / CT7 -1.21 (|f / f1|+|f / f6|) / |f / f4| 3.74 ET7 / ET6 4.87 |R1+R2| / |R1-R2| 0.14 Y7R1 / Y6R1 1.14 |(R1+R4) / (R1-R4)| 0.04 Yc72 / Y6R2 1.00 (|R1|+|R11|) / f 4.08 Yc61 / Yc11 0.85 (R5+R6) / (R5-R6) 0.35 |DIST|max 46.4% 100×|R11|R9| 9.64 - - Tenth embodiment

[0199] Fig.19 shows a perspective view of an image sensing unit according to the tenth 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 photographing lens assembly as disclosed in the first embodiment, a barrel, and a holder member (their reference numerals are omitted) for holding the photographing lens assembly. However, the lens unit 101 may alternatively be provided with the photographing lens assembly disclosed in other embodiments of the present disclosure, and the present disclosure is not limited thereto.The imaging light converges 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 on the image sensor 103, and the formed image is then digitally transmitted to other electronic components for further processing.

[0200] The drive device 102 may have an automatic focusing function, and various drive configurations can be achieved through the use of voice coil motors (VCMs), microelectromechanical systems (MEMS), piezoelectric systems, or shape memory alloy materials. The drive device 102 is advantageous for achieving a better imaging position of 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 (e.g., CCD or CMOS), which may be characterized by high light sensitivity and low noise, is arranged on the image surface of the photographing lens assembly to achieve higher image quality.

[0201] 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 the pan and tilt of the lens unit 101 to reduce blur associated with movement during recording. In some cases, compensation can be achieved through electronic image stabilization (EIS) using image processing software, thereby improving image quality in motion or low-light conditions. Eleventh embodiment

[0202] Fig. 20 shows a perspective view of an electronic device according to the eleventh embodiment of the present disclosure. Fig. 21 shows another perspective view of the electronic device in Fig.20.

[0203] In this embodiment, an electronic device 200 is a smartphone having an image capturing unit 100 disclosed in the twelfth embodiment, an image capturing unit 100a, an image capturing unit 100b, an image capturing unit 100c, and a display unit 201. As shown in Fig. 20, 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 face the same side, and each of the image capture units 100, 100a, and 100b has a single focal point. As shown in Fig. As shown in Figure 21, the image capture unit 100c and the display unit 201 are arranged on the opposite side of the electronic device 200, so that the image capture unit 100c may be a front camera of the electronic device 200 for taking selfies, but the present disclosure is not limited thereto. Further, each of the image capture units 100a, 100b, and 100c may include the photographing lens assembly according to the present disclosure and a configuration similar to that of the image capture unit 100. Specifically, each of the image capture units 100a, 100b, and 100c may include a lens unit, a driving device, an image sensor, and an image stabilizer, and each of the lens units may include a photographing lens assembly such as the photographing lens assembly of the present disclosure, a barrel, and a holder member for holding the photographing lens assembly.

[0204] The image capture unit 100 is a wide-angle image capture unit, the image capture unit 100a is a telephoto image capture unit, the image capture unit 100b is an ultra-wide-angle image capture unit, and the image capture unit 100c is a wide-angle image capture unit. In this embodiment, the image capture units 100, 100a, and 100b have different image angles, so that the electronic device 200 can have different magnification ratios to meet the requirement of an optical zoom function. Furthermore, the image capture unit 100c, as shown in Fig. 21, have a non-circular opening, and the lens barrel or lens elements in the image sensing unit 100c may have one or more truncated edges at their outer diameter positions to conform to the non-circular opening. Therefore, it is advantageous to further reduce the length of the image sensing unit 100c along a single axis, thereby reducing the overall size of the lens, increasing the area ratio of the display unit 201 with respect to the electronic device 200, reducing the thickness of the electronic device 200, and achieving compactness of the overall module. In this embodiment, the electronic device 200 includes a plurality of image sensing units 100, 100a, 100b, and 100c, but the present disclosure is not limited to the number and arrangement of the image sensing units. Twelfth embodiment

[0205] Fig. 22 shows a perspective view of an electronic device according to the twelfth embodiment of the present disclosure. Fig. 23 shows another perspective view of the electronic device in Fig. 22. Fig. 24 shows a block diagram of the electronic device in Fig. 22.

[0206] In this embodiment, an electronic device 300 is a smartphone including an image capture unit 100 disclosed in the tenth embodiment, an image capture unit 100d, an image capture unit 100e, an image capture unit 100f, an image capture unit 100g, a flash module 301, a focus assist module 302, an image signal processor 303, a display module 304, and an image software processor 305. The image capture unit 100 and the image capture unit 100d are arranged on the same side of the electronic device 300. The focus assist module 302 may be a laser rangefinder or a ToF (Time of Flight) module, but the present disclosure is not limited thereto.The image capture unit 100e, the image capture unit 100f, the image capture unit 100g, and the display module 304 are arranged on the opposite side of the electronic device 300, and the display module 304 may be a user interface. Thus, the image capture units 100e, 100f, 100h may be front cameras of the electronic device 300 for taking selfies, but the present disclosure is not limited thereto. Furthermore, each of the image capture units 100d, 100e, 100f, and 100g may have the photography lens assembly according to the present disclosure and a configuration similar to that of the image capture unit 100.Specifically, each of the image sensing units 100d, 100e, 100f, and 100g may include a lens unit, a driving device, an image sensor, and an image stabilizer, and each of the lens units may include a photographing lens assembly such as the photographing lens assembly of the present disclosure, a barrel, and a holder member for holding the photographing lens assembly.

[0207] Image capture unit 100 is a wide-angle image capture unit, image capture unit 100d is an ultra-wide-angle image capture unit, image capture unit 100e is a wide-angle image capture unit, image capture unit 100f is an ultra-wide-angle image capture unit, and image capture unit 100g is a ToF image capture unit. In this embodiment, image capture units 100 and 100d have different image angles, so that electronic device 300 can have different magnification ratios to meet the requirement of an optical zoom function. Furthermore, image capture unit 100g can determine depth information regarding the imaged object. In this embodiment, electronic device 300 includes a plurality of image capture units 100, 100d, 100e, 100f, and 100g, but the present disclosure is not limited to the number and arrangement of the image capture units.

[0208] When a user captures images of an object 306, the light beams converge in the image capture unit 100 or the image capture unit 100d to create images, and the flash module 301 is activated to supplement the light. The focus assist module 302 detects the object distance of the imaged object 306 to achieve fast automatic focusing. The image signal processor 303 is configured to optimize the captured image to improve image quality. The light beam emitted by the focus assist module 302 can be either a conventional infrared beam or a laser beam. Furthermore, the light beams can converge in the image capture unit 100e, 100f, or 100g to create images.The display module 304 may include a touchscreen, and the user is able to interact with the display module 304 and the image software processor 305, which has multiple functions for capturing images and completing image processing. Alternatively, the user can capture images using a physical button. The image processed by the image software processor 305 can be displayed on the display module 304. Thirteenth embodiment

[0209] Fig. 25 shows a perspective view of an electronic device according to the thirteenth embodiment of the present disclosure;

[0210] In this embodiment, an electronic device 400 is a smartphone including the image capture unit 100 disclosed in the tenth embodiment, an image capture unit 100h, an image capture unit 100i, 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 unit 100, the image capture unit 100h, and the image capture unit 100i 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. Further, each of the image capture units 100h and 100i may include the photographing lens assembly according to the present disclosure and a configuration similar to that of the image capture unit 100, and the details thereof will not be repeated.

[0211] The image capture unit 100 is an ultra-wide-angle image capture unit, the image capture unit 100h is a telephoto image capture unit, and the image capture unit 100i is a wide-angle image capture unit. In this embodiment, the image capture units 100, 100h, and 100i have different image angles, so that the electronic device 400 can have different magnification ratios to meet the requirement of an optical zoom function. In addition, the image capture unit 100h can be a telephoto image capture unit with a light-directing element configuration, so that the overall length of the image capture unit 100h is not limited by the thickness of the electronic device 400. The light-directing element configuration of the image capture unit 100h can further be, for example, similar to one of the Fig. 29 to Fig. 31 shown structures, which are referred to in the preceding descriptions Fig. 29 to Fig. 31, and the details thereof will not be repeated. In this embodiment, the electronic device 400 includes a plurality of image capture units 100, 100h, and 100i, 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 converge in the image capture unit 100, 100h, or 100i to form images, and the flash module 401 is activated for light supplementation. Furthermore, the subsequent processes are performed in a similar manner to the aforementioned embodiment, so the details thereof will not be repeated. Fourteenth embodiment

[0212] Fig. 26 shows a perspective view of an electronic device according to the fourteenth embodiment of the present disclosure;

[0213] In this embodiment, an electronic device 500 is a smartphone including an image capture unit 100 disclosed in the tenth embodiment, an image capture unit 100j, an image capture unit 100h, 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, an image capture unit 100s, a flash module 501, a focus assist module, an image signal processor, a display module, and an image software processor (not shown). The image capture units 100, 100j, 100k, 100m, 100n, 100p, 100q, 100r, and 100s are arranged on the same side of the electronic device 500, while the display module is arranged on the opposite side of the electronic device 500.Furthermore, each of the image sensing units 100s, 100k, 100m, 100n, 100p, 100q, 100r, and 100s may include the photographing lens assembly according to the present disclosure and a configuration similar to that of the image sensing unit 100, and the details thereof will not be repeated.

[0214] The image acquisition unit 100 is a wide-angle image acquisition unit, the image acquisition unit 100j is a telephoto image acquisition unit, the image acquisition unit 100h is a telephoto image acquisition unit, the image acquisition unit 100m is a wide-angle image acquisition unit, the image acquisition unit 100n is an ultra-wide-angle image acquisition unit, the image acquisition unit 100p is an ultra-wide-angle image acquisition unit, the image acquisition unit 100q is a telephoto image acquisition unit, the image acquisition unit 100r is a telephoto image acquisition unit, and the image acquisition unit 100s is a ToF image acquisition unit. In this embodiment, the image capture units 100, 100j, 100k, 100m, 100n, 100p, 100q, and 100r have different angles of view, so that the electronic device 500 can have different magnification ratios to meet the requirement of an optical zoom function.Furthermore, each of the image capture units 100j and 100k may be a telephoto image capture unit having a light-directing element configuration. The light-directing element configuration of each of the image capture units 100i and 100k may further be similar to one of the configurations shown in FIG. Fig. 29 to Fig. 31 shown structures, which are referred to in the preceding descriptions Fig. 29 to Fig.31, and the related details will not be repeated. Furthermore, the image capture unit 100s can determine depth information regarding the imaged object. In this embodiment, the electronic device 500 includes a plurality of image capture units 100, 100j, 100k, 100m, 100n, 100p, 100q, 100r, and 100s, 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 converge in the image capture unit 100, 100j, 100k, 100m, 100n, 100p, 100q, 100r, or 100s to create images, and the flash module 501 is activated for light supplementation. Furthermore, the subsequent processes are performed in a similar manner to the aforementioned embodiments, and the details thereof will not be repeated.

[0215] The smartphone in several embodiments is merely an example for illustrating the image acquisition unit of the present disclosure installed in an electronic device, and the present disclosure is not limited thereto. The image acquisition unit can optionally be applied to a moving-focus optical system. Furthermore, the photographing lens assembly of the image acquisition unit features good aberration correction capability and high image quality, and can be used for 3D (three-dimensional) image acquisition 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-detecting input devices, wearable devices, and other electronic imaging devices.

[0216] The foregoing description has been made for the purpose of illustration with reference to specific embodiments. It should be noted that Tables 1A-9C show different data for the various embodiments; however, the data for the various embodiments are derived from experiments. The embodiments were chosen and described in order to best explain the principles of the disclosure and their practical applications, to thereby enable others skilled in the art to best utilize the disclosure and various embodiments with various modifications as are suited to particular uses. The above-described 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] A photographing lens assembly comprising seven lens elements (E1, E2, E3, E4, E5, E6, E7), the seven lens elements (E1, E2, E3, E4, E5, E6, E7) comprising, 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, 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 negative refractive power, the image-side surface of the second lens element (E2) is concave in a paraxial region thereof, the image-side surface of the third lens element (E3) is convex in a paraxial region thereof, the fourth lens element (E4) has a negative refractive power, the sixth lens element (E6) has a positive refractive power, the object-side surface of the sixth lens element (E6) is convex in a paraxial region thereof, the image-side surface of the sixth lens element (E6) is convex in a paraxial region thereof, and the image-side surface of the seventh lens element (E7) has at least one inflection point (P); wherein an axial distance between the object-side surface of the first lens element (E1) and an image surface (IMG) is TL, a focal length of the photographing lens array is f, a radius of curvature of the object-side surface of the fifth lens element (E5) is R9, a radius of curvature of the object-side surface of the sixth lens element (E6) is R11, and the following conditions are satisfied: 1.80 <TL / f<4,2;und 0.00<100×|R11 / R9|<23.

50. [2] A photographing lens arrangement according to claim 1, wherein the third lens element (E3) has a positive refractive power, the object-side surface of the third lens element (E3) is convex in a paraxial region thereof, the seventh lens element (E7) has a negative refractive power, the image-side surface of the seventh lens element (E7) is concave in a paraxial region thereof, and the object-side surface and / or the image-side surface of each of the entire lens elements of the photographing lens arrangement is aspherical. [3] A photographing lens arrangement according to claim 1, wherein the object-side surface of the first lens element (E1) is concave in a paraxial region thereof, the image-side surface of the first lens element (E1) is concave in a paraxial region thereof, and at least four lens elements of the photographing lens arrangement are made of plastic material. [4] A photographing lens assembly according to claim 1, wherein the center thickness of the fifth lens element (E5) is CT5, a center thickness of the sixth lens element (E6) is CT6, and the following condition is satisfied: 0.80 <CT6 / CT5<3,50. [5] A photographing lens assembly according to claim 1, wherein the focal length of the photographing lens assembly is f, a combined focal length of the third lens element (E3) and the fourth lens element (E4) is f34, the radius of curvature of the object-side surface of the sixth lens element (E6) is R11, a radius of curvature of the image-side surface of the sixth lens element (E6) is R12, and the following condition is satisfied: 0.25<|f / f34|<1.25;and 0.50<(|R11|+|R12|) / f<15.

00. [6] A photographing lens arrangement 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 first lens element (E1) is R2, and the following condition is satisfied: 0.00<|R1+R2| / |R1−R2|<1.

50. [7] A photographing lens arrangement according to claim 1, wherein a center thickness of the sixth lens element (E6) is CT6, a center thickness of the seventh lens element (E7) is CT7, and the following condition is satisfied: 0.30 <CT7 / CT6<1,05. [8] A photographing lens arrangement according to claim 1, wherein a focal length of the first lens element (E1) is f1, a focal length of the third lens element (E3) is f3, a radius of curvature of the object-side surface of the seventh lens element (E7) is R13, a radius of curvature of the image-side surface of the seventh lens element (E7) is R14, and the following conditions are satisfied: 0.10<|f1 / f3|<5.00;and −0.30<(R13+R14) / (R13−R14)<10.

00. [9] A photographing lens array according to claim 1, wherein an entrance pupil diameter of the photographing lens array is EPD, a maximum image height of the photographing lens array is ImgH, a maximum effective radius of the object-side surface of the sixth lens element (E6) is Y6R1, a maximum effective radius of the object-side surface of the seventh lens element (E7) is Y7R1, and the following condition is satisfied: 0.20 <EPD / lmgH<0,50;und 1.00 <Y7R1 / Y6R1<1,25. [10] A photographing lens arrangement according to claim 1, wherein a vertical distance between a critical point (C) on the image-side surface of the seventh lens element (E7) and an optical axis is Yc72, and a maximum effective radius of the image-side surface of the sixth lens element (E6) is Y6R2, a maximum value of an absolute value of a distortion aberration on the image surface (IMG) at different image angles is | DIST| max, and the following conditions are satisfied: 0.70 <Yc72 / Y6E2<1,15;und 30.0%<|DIST|max<80.0% [11] Image acquisition unit (100) with: the photographing lens arrangement according to claim 1; and an image sensor (103) arranged on the image surface (IMG) of the photographing lens arrangement. [12] Electronic device (200) comprising: the image capture unit (100) according to claim 11. [13] A photographing lens arrangement comprising seven lens elements (E1, E2, E3, E4, E5, E6, E7), wherein the seven lens elements (E1, E2, E3, E4, E5, E6, E7) comprise, 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 wherein each of the seven lens elements (E1, E2, E3, E4, E5, E6, 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 negative refractive power, the image-side surface of the first lens element (E1) is concave in a paraxial region thereof, the image-side surface of the second lens element (E2) is concave in a paraxial region thereof, the fourth lens element (E4) has a negative refractive power, the sixth lens element (E6) has a positive refractive power, the object-side surface of the sixth lens element (E6) is convex in a paraxial region thereof, the image-side surface of the sixth lens element (E6) is convex in a paraxial region thereof, and the image-side surface of the seventh lens element (E7) has at least one inflection point (P); wherein an axial distance between the object-side surface of the first lens element (E1) and an image surface (IMG) is TL, a focal length of the photographing lens array is f, 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 sixth lens element (E6) is f6, an axial distance between the first lens element (E1) and the second lens element (E2) is T12, an axial distance between the second lens element (E2) and the third lens element (E3) is T23, 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 center thickness of the second lens element (E2) is CT2, a radius of curvature of the object-side surface of the first lens element (E1) R1 is a radius of curvature of the object-side surface of the sixth lens element (E6) is R11,and the following conditions are met:, 1.80 <TL / f<4,20; 1.85<(|f / f1|+|f / f6|) / |f / f4|<12.50; 0.10<(T12+T23) / CT2<1.80; 0.50<(|R1|+|R11|) / f<10.00;and (T23+T34) / (T12+T45)<1.

85. [14] A photographing lens arrangement according to claim 13, wherein the object-side surface of the first lens element (E1) is concave in a paraxial region thereof, the object-side surface of the second lens element (E2) is convex in a paraxial region thereof, the image-side surface of the third lens element (E3) is convex in a paraxial region thereof, and the image-side surface of the seventh lens element (E7) is concave in a paraxial region thereof. [15] A photographing lens assembly according to claim 13, wherein a maximum angle of view of the photographing lens assembly is FOV, and the following condition is satisfied: 138.0 degrees <FOV<180,0 Grad. [16] A photographing lens arrangement according to claim 13, wherein the axial distance between the first lens element (E1) and the second lens element (E2) is T12, a center thickness of the third lens element (E3) is CT3, and the following condition is satisfied: 0.10 <T12 / CT3<0,90. [17] A photographing lens arrangement according to claim 13, wherein the object-side surface and / or the image-side surface of the sixth lens element (E6) has at least one inflection point (P); wherein a focal length of the fourth lens element (E4) is f4 and a focal length of the sixth lens element (E6) is f6, and the following condition is satisfied: −10.50 <f4 / f6<−1,00. [18] A photographing lens arrangement according to claim 13, wherein the 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 second lens element (E2) is R4, and the following condition is satisfied: 0.00<(|R1+R4|) / (|R1−R4|)<2.

20. [19] A photographing lens arrangement according to claim 13, wherein the focal length of the first lens element (E1) is f1, a focal length of the seventh lens element (E7) is f7, the axial distance between the first lens element (E1) and the second lens element (E2) is T12, the axial distance between the second lens element (E2) and the third lens element (E3) is T23, the center thickness of the second lens element (E2) is CT2, and the following conditions are satisfied: 0.00 <f1 / f7<1,50;und 0.20 <T12 / (CT2+T23)<3,00. [20] A photographing lens arrangement according to claim 13, wherein an Abbe number of the second lens element (E2) is V2, an Abbe number of the fourth lens element (E4) is V4, an Abbe number of the fifth lens element (E5) is V5, a displacement parallel to an optical axis from an axial vertex on the object-side surface of the seventh lens element (E7) to a maximum effective radius position on the object-side surface of the seventh lens element (E7) is SAG7R1, a center thickness of the seventh lens element (E7) is CT7, and the following conditions are satisfied: 0.30<(V2+V4) / V5<1.80;and −2.00 <SAG7R1 / CT7<−0,50. [21] A photographing lens arrangement comprising seven lens elements (E1, E2, E3, E4, E5, E6, E7), wherein the seven lens elements (E1, E2, E3, E4, E5, E6, E7) comprise, 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 wherein each of the seven lens elements (E1, E2, E3, E4, E5, E6, 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 negative refractive power, the object-side surface of the first lens element (E1) is concave in a paraxial region thereof, the sixth lens element (E6) has a positive refractive power, and the image-side surface of the seventh lens element (E7) has at least one inflection point (P); where an axial distance between the object-side surface of the first lens element (E1) and an image surface (IMG) is TL, a focal length of the photographing lens array is f, a sum of the center thicknesses of all lens elements of the photographing lens array is ΣCT, a sum of the axial distances between each of all adjacent lens elements of the photographing lens array is ΣAT, a focal length of the fifth lens element (E5) is f5, a focal length of the sixth lens element (E6) is f6, an axial distance between the object-side surface of the first lens element (E1) and the image-side surface of the seventh lens element (E7) is TD, a center thickness of the first lens element (E1) is CT1, a center thickness of the second lens element (E2) is CT2, a center thickness of the fourth lens element (E4) is CT4, a center thickness of the fifth lens element (E5) is CT5, and the following Conditions are met: 1.80 <TL / f<4,10; 2.65<∑CT / ∑AT<10.00; 0.00≤|f6 / f5|<0.55; 1.85<10×f / TD<3.90; and 1.40<(CT2+CT5) / (CT1+CT4) [22] A photographing lens arrangement according to claim 21, wherein the image-side surface of the first lens element (E1) is concave in a paraxial region thereof, the image-side surface of the second lens element (E2) is concave in a paraxial region thereof, the image-side surface of the third lens element (E3) is convex in a paraxial region thereof, the object-side surface of the sixth lens element (E6) is convex in a paraxial region thereof, and the image-side surface of the seventh lens element (E7) is concave in a paraxial region thereof. [23] A photographing lens assembly according to claim 21, further comprising an aperture stop (ST) disposed between the first lens element (E1) and the third lens element (E3); wherein a maximum angle of view of the photographing lens assembly is FOV, and the following condition is satisfied: 138.0 degrees <FOV<180,0 Grad. [24] A photographing lens arrangement according to claim 21, wherein a radius of curvature of the object-side surface of the first lens element (E1) is R1, a radius of curvature of the object-side surface of the sixth lens element (E6) is R11, the focal length of the photographing lens arrangement is f, and the following condition is satisfied: 0.50<(|R1|+|R11|) / f<10.

00. [25] A photographing lens arrangement according to claim 21, wherein a radius of curvature of the object-side surface of the third lens element (E3) is R5, a radius of curvature of the image-side surface of the third lens element (E3) is R6, and the following condition is satisfied: 0.18<(R5+R6) / (R5−R6)<1.

00. [26] A photographing lens arrangement according to claim 21, wherein an axial distance between the first lens element (E1) and the second lens element (E2) is T12, a center thickness of the seventh lens element (E7) is CT7, a focal length of the first lens element (E1) is f1, a focal length of the seventh lens element (E7) is f7, and the following conditions are satisfied: 0.10 <T12 / CT7<1,35; und 0.00 <f1 / f7<1,50. [27] A photographing lens arrangement according to claim 21, wherein the object-side surface of the sixth lens element (E6) has at least one inflection point (P); wherein the focal length of the photographing lens arrangement is f, a focal length of the third lens element (E3) is f3, and the following condition is satisfied: 0.60<|f / f3|<2.

00. [28] A photographing lens arrangement according to claim 21, wherein a distance parallel to an optical axis between a maximum effective radius position of the object-side surface of the sixth lens element (E6) and a maximum effective radius position of the image-side surface of the sixth lens element (E6) is ET6, a distance parallel to the optical axis between a maximum effective radius position of the object-side surface of the seventh lens element (E7) and a maximum effective radius position of the image-side surface of the seventh lens element (E7) is ET7, a vertical distance between a critical point (C) on the object-side surface of the first lens element (E1) and the optical axis is Yc11, a vertical distance between a critical point (C) on the object-side surface of the sixth lens element (E6) and the optical axis is Yc61, and the following condition is satisfied: 2.40 <ET7 / ET6<6,00; und 0,75<Yc61 / Yc11<1,80. [29] A photographing lens arrangement according to claim 21, wherein the 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 photographing lens arrangement is f, a focal length of the first lens element (E1) is f1, a focal length of the fourth lens element (E4) is f4, the focal length of the fifth lens element (E5) is f5, a focal length of the sixth lens element (E6) is f6, a radius of curvature of the object-side surface of the first lens element (E1) is R1, a radius of curvature of the object-side surface of the fifth lens element (E5) is R9, a radius of curvature of the object-side surface of the sixth lens element (E6) is R11, an axial distance between the first lens element (E1) and the second lens element (E2) is T12, an axial distance between the second lens element (E2) and the third lens element (E3) is T23,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, the center thickness of the first lens element (E1) is CT1, the center thickness of the second lens element (E2) is CT2, the center thickness of the fourth lens element (E4) is CT4, the center thickness of the fifth lens element (E5) is CT5, the sum of the center thicknesses of all the lens elements of the photographing lens arrangement is ΣCT, the sum of the axial distances of each of the lens elements of the photographing lens arrangement is ΣAT, the axial distance between the object-side surface of the first lens element (E1) and the image-side surface of the seventh lens element (E7) is TD, and the following conditions are met: 3.08≤TL / f≤3.78; 0.11≤100×|R11 / R9|≤19.34; 2.64≤(|f / f1|+|f / f6|) / |f / f4|≤4.76; 0.62≤(T12+T23) / CT2≤1.29; 1.80≤(|R1|+|R11|) / f≤4.08; 0.17≤(T23+T34) / (T12+T45)≤0.68; 2.90≤∑CT / ∑AT≤5.11; 0.00≤10×f / TD≤3.82; and 3.08≤10×f / TD≤3.82; and 1.72≤(CT2+CT5) / (CT1+CT4)≤2.12.

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