Image-capturing optical lens arrangement, imaging device and electronic device

Abstract

Image-capturing optical lens arrangement comprising eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8), wherein the eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8) are arranged in a sequence from an object side to an image side along a ray 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), a seventh lens element (E7) and an eighth lens element (E8); wherein each of the eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8) has an object-side surface facing the object side and an image-side surface facing the image side; wherein the object-side surface of the second lens element (E2) is concave in a paraxial region; the image-side surface of the second lens element (E2) is convex in a paraxial region; the third lens element (E3) has a positive refractive power; the image-side surface of the fifth lens element (E5) is concave in a paraxial region; the eighth lens element (E8) has a negative refractive power; the image-side surface of the eighth lens element (E8) is concave in a paraxial region; the image-side surface of the eighth lens element (E8) includes at least one inflection point (IP); where an axial distance between the first lens element (E1) and the second lens element (E2) is T12, an axial distance between the fourth lens element (E4) and the fifth lens element (E5) is T45, an axial distance between the fifth lens element (E5) and the sixth lens element (E6) is T56, an axial distance between the image-side surface of the eighth lens element (E8) and an image surface (IMG) is BL, a focal length of the image-capturing optical lens arrangement is f, a radius of curvature of the object-side surface of the second lens element (E2) is R3, and the following conditions are met: 0 < T45 / T56 < 0.75 ; 0.20 < BL / T12 < 0.95 ; and − 1.30 < R3 / f < − 0.25.

Description

STATE OF THE ART Area of ​​technology

[0001] The present disclosure relates to an image-capturing optical lens arrangement and an imaging device. In particular, the present disclosure relates to a compact image-capturing optical lens arrangement and an imaging device that can be used in electronic devices. Description of the related technique

[0002] Recent advances in semiconductor process technology have improved the performance of image sensors, enabling smaller pixel sizes. As a result, high-quality optical lens arrays have become an indispensable component of modern electronics. With the rapid development of technology, applications of electronic devices equipped with optical lens arrays are increasing, and there is a wide range of requirements for these arrays. However, with a conventional optical lens array, it is difficult to achieve a balanced relationship between image quality, sensitivity, aperture, volume, and field of view. Consequently, there is a demand for an image-capturing lens array that meets these requirements. DEMOLITION

[0003] According to one aspect of the present disclosure, an image-capturing optical lens arrangement comprises eight lens elements, which—in an order from an object side to an image side along a beam path—are a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, and an eighth lens element. Each of the eight lens elements has an object-side surface facing the object side and an image-side surface facing the image side. Preferably, the object-side surface of the second lens element is concave in a paraxial region. Preferably, the image-side surface of the second lens element is convex in a paraxial region. Preferably, the third lens element has a positive refractive power.Preferably, the image-side surface of the fifth lens element is concave in a paraxial region. Preferably, the eighth lens element has a negative refractive power. Preferably, the image-side surface of the eighth lens element is concave in a paraxial region. Preferably, the image-side surface of the eighth lens element includes at least one inflection point.If an axial distance between the first lens element and the second lens element is T12, an axial distance between the fourth lens element and the fifth lens element is T45, an axial distance between the fifth lens element and the sixth lens element is T56, an axial distance between the image-side surface of the eighth lens element and an image surface BL is, a focal length of the image-capturing optical lens arrangement is f, and a radius of curvature of the object-side surface of the second lens element is R3, then the following conditions are preferably satisfied: 0 < T45 / T56 < 0.75; 0.20 < BL / T12 < 0.95; and -1.30 < R3 / f < -0.25.

[0004] Based on examples of the image-capturing optical lens arrangement of the above aspect, if the object-side surface of the third lens element is convex in a paraxial region of the same and half of a maximum field of view of the image-capturing optical lens arrangement HFOV is, the following condition is satisfied: 0.70 < tan(HFOV) < 1.45.

[0005] Following examples of the image-capturing optical lens arrangement described above, the image-capturing optical lens arrangement may further include an aperture diaphragm located between the first lens element and the fifth lens element. The fifth lens element has a negative refractive power; if the focal length of the image-capturing optical lens arrangement is f, and the entrance pupil diameter of the image-capturing optical lens arrangement is EPD, the following condition is satisfied: 1.20 < f / EPD < 2.00.

[0006] Based on examples of the image-capturing optical lens arrangement of the above aspect, where the axial distance between the fourth lens element and the fifth lens element is T45, the axial distance between the fifth lens element and the sixth lens element is T56, the focal length of the third lens element is f3, and the focal length of the fourth lens element is f4, the following conditions are met: 0.01 < T45 / T56 < 0.45; and -0.30 < f3 / f4 < 2.60.

[0007] Based on examples of the image-capturing optical lens arrangement of the above aspect, where the axial distance between the first lens element and the second lens element is T12, the axial distance between the image-side surface of the eighth lens element and the image surface is BL, an Abbe number of the third lens element is V3, and an Abbe number of the seventh lens element is V7, the following conditions are satisfied: 0.30 < BL / T12 < 0.85; and 0.20 < V7 / V3 < 0.90.

[0008] Based on examples of the image-capturing optical lens arrangement of the above aspect, if the diameter of the entrance pupil of the image-capturing optical lens arrangement is EPD and the maximum image height of the image-capturing optical lens arrangement is ImgH, the following condition is met: 0.35 < EPD / ImgH < 0.90.

[0009] Based on examples of the image-capturing optical lens arrangement of the above aspect, where the focal length of the image-capturing optical lens arrangement is f, the maximum image height of the image-capturing optical lens arrangement is ImgH, the focal length of the first lens element is f1, and the focal length of the eighth lens element is f8, the following conditions are satisfied: 0.50 < f / ImgH < 1.50; and -0.25 < f8 / f1 < 0.65.

[0010] Based on examples of the image-capturing optical lens arrangement of the above aspect, if the radius of curvature of the image-side surface of the second lens element is R4 and the radius of curvature of the object-side surface of the third lens element is R5, the following condition is satisfied: -1.30 <R4 / R5<−0,40.

[0011] Based on examples of the image-capturing optical lens arrangement of the above aspect, if a focal length of the image-capturing optical lens arrangement is f and the radius of curvature of the object-side surface of the second lens element is R3, the following condition is satisfied: -0.80 < R3 / f < -0.40.

[0012] Following examples of the image-capturing optical lens arrangement of the preceding aspect, the seventh lens element has a positive refractive power; the image-side surface of the seventh lens element is convex in a paraxial region. If the radius of curvature of the object-side surface of the second lens element is R3 and the radius of curvature of the object-side surface of the fourth lens element is R7, the following condition is satisfied: -1.50 < (R3+R7) / (R3-R7) < 0.

[0013] Based on examples of the image-capturing optical lens arrangement of the preceding aspect, where the focal length of the image-capturing optical lens arrangement is f, the focal length of the second lens element is f2, the radius of curvature of the object-side surface of the second lens element is R3, the radius of curvature of the image-side surface of the second lens element is R4, and the radius of curvature of the image-side surface of the eighth lens element is R16, the following conditions are satisfied: -0.40 < f / f2 < 0.30; and 0.80 < (|R3|+|R4|+R16) / f < 2.70.

[0014] According to examples of the image-capturing optical lens arrangement of the above aspect, where a maximum effective radius of the object-side surface of the seventh lens element is Y7R1, a maximum effective radius of the image-side surface of the eighth lens element is Y8R2, a displacement parallel with an optical axis from an axial vertex on the image-side surface of the third lens element to a position of a maximum effective radius on the image-side surface of the third lens element is SAG3R2, and a central thickness of the third lens element is CT3, the following conditions are satisfied: 1.40 < Y8R2 / Y7R1 < 2.20; and - 0.50 < SAG3R2 / CT3 < 0.30.

[0015] Based on examples of the image-capturing optical lens arrangement of the preceding aspect, where a displacement parallel with an optical axis from an axial vertex on the object-side surface of the seventh lens element to a position of maximum effective radius on the object-side surface of the seventh lens element is SAG7R1, a central thickness of the seventh lens element is CT7, the image-capturing optical lens arrangement is f, the radius of curvature of the object-side surface of the second lens element is R3, a radius of curvature of the image-side surface of the second lens element is R4, and a radius of curvature of the image-side surface of the eighth lens element is R16, the following conditions are satisfied: -2.00 < SAG7R1 / CT7 < -0.50; and 1.30 < (|R3|+|R4|+R16) / f < 2.20.

[0016] According to one aspect of the present disclosure, an imaging device comprises the image-capturing optical lens arrangement of the preceding aspect and an image sensor, wherein the image sensor is arranged on the image surface of the image-capturing optical lens arrangement.

[0017] According to one aspect of the present disclosure, an image-capturing optical lens arrangement comprises eight lens elements, which are – in an order from an object side to an image side along a beam 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,The lens element comprises a seventh and an eighth lens element. Each of the eight lens elements has an object-side surface facing the object and an image-side surface facing the image. Preferably, the object-side surface of the second lens element is concave in a paraxial region. Preferably, the image-side surface of the second lens element is convex in a paraxial region. Preferably, the third lens element has a positive refractive power. Preferably, the object-side surface of the third lens element is convex in a paraxial region. Preferably, the fifth lens element has a negative refractive power. Preferably, the image-side surface of the fifth lens element is concave in a paraxial region. Preferably, the eighth lens element has a negative refractive power. If the axial distance between the first and second lens elements 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, an axial distance between the fifth lens element and the sixth lens element is T56, an axial distance between the sixth lens element and the seventh lens element is T67, an axial distance between the seventh lens element and the eighth lens element is T78, a maximum under T12, T23, T34, T45, T56, T67, T78 is ATmax, a central thickness of the first lens element is CT1, a central thickness of the second lens element is CT2, a central thickness of the third lens element is CT3, a central thickness of the fourth lens element is CT4, a central thickness of the fifth lens element is CT5, a central thickness of the sixth lens element is CT6,where the central thickness of the seventh lens element CT7 is, the central thickness of the eighth lens element CT8 is, a maximum under CT1, CT2, CT3, CT4, CT5, CT6, CT7, CT8 is CTmax, a focal length of the image-capturing optical lens arrangement is f, and a radius of curvature of the object-side surface of the seventh lens element is R13, the following conditions are preferably met: 0 < T45 / T56 < 1.00; 0 < (T23+T34+T45) / T12 < 0.65; -1.80 < f / R13 < 0.30; and 0.15 < CTmax / ATmax < 1.20.

[0018] Based on examples of the image-capturing optical lens arrangement of the preceding aspect, the image-side surface of the eighth lens element is concave in a paraxial region thereof; the image-side surface of the eighth lens element includes at least one critical point. If the focal length of the image-capturing optical lens arrangement is f, and the entrance pupil diameter of the image-capturing optical lens arrangement is EPD, the following condition is satisfied: 1.40 < f / EPD < 1.90.

[0019] According to examples of the image-capturing optical lens arrangement of the above aspect, where the axial distance between the fourth lens element and the fifth lens element is T45, the axial distance between the fifth lens element and the sixth lens element is T56, a radius of curvature of the object-side surface of the fifth lens element is R9, and a radius of curvature of the image-side surface of the eighth lens element is R16, the following conditions are satisfied: 0 < T45 / T56 < 0.60; and -0.60 < R16 / R9 < 0.30.

[0020] According to examples of the image-capturing optical lens arrangement of the foregoing aspect, the image-capturing optical lens arrangement may further comprise an aperture diaphragm, wherein if an axial distance between the aperture diaphragm and the image-side surface of the eighth lens element is SD, 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, the axial distance between the fourth lens element and the fifth lens element is T45, and an axial distance between the image-side surface of the eighth lens element and an image surface BL is, the following conditions are satisfied: 0.03 < (T23+T34+T45) / T12 < 0.35; and 0.05 < BL / SD < 0.35.

[0021] Based on examples of the image-capturing optical lens arrangement of the above aspect, where the focal length of the image-capturing optical lens arrangement is f, the radius of curvature of the object-side surface of the seventh lens element is R13, the central thickness of the third lens element is CT3, and the central thickness of the fifth lens element is CT5, the following conditions are satisfied: -1.40 < f / R13 < 0; and 0.80 < CT3 / CT5 < 4.00.

[0022] Based on examples of the image-capturing optical lens arrangement of the above aspect, if the focal length of the image-capturing optical lens arrangement is f and the radius of curvature of the object-side surface of the seventh lens element is R13, the following condition is met: -1.25 < f / R13 < -0.15.

[0023] According to examples of the image-capturing optical lens arrangement of the above aspect, where 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, the axial distance between the fourth lens element and the fifth lens element is T45, the axial distance between the fifth lens element and the sixth lens element is T56, the axial distance between the sixth lens element and the seventh lens element is T67, the axial distance between the seventh lens element and the eighth lens element is T78, the maximum under T12, T23, T34, T45, T56, T67, T78 is ATmax, the central thickness of the first lens element is CT1, the central thickness of the second lens element is CT2, the central thickness of the third lens element is CT3,The following conditions are met if the center thickness of the fourth lens element is CT4, the center thickness of the fifth lens element is CT5, the center thickness of the sixth lens element is CT6, the center thickness of the seventh lens element is CT7, the center thickness of the eighth lens element is CT8, the maximum under CT1, CT2, CT3, CT4, CT5, CT6, CT7, CT8 is CTmax, a radius of curvature of the object-side surface of the second lens element is R3, and a radius of curvature of the object-side surface of the fourth lens element is R7: 0.25 < CTmax / ATmax < 1.10; and -1.35 < (R3+R7) / (R3-R7) < 0.

[0024] Based on examples of the image-capturing optical lens arrangement of the above aspect, where the axial distance between the sixth lens element and the seventh lens element is T67, the axial distance between the seventh lens element and the eighth lens element is T78, the central thickness of the first lens element is CT1 and the central thickness of the eighth lens element is CT8, the following condition is satisfied: 0.20 < (T67+T78) / (CT1+CT8) < 2.00.

[0025] Based on examples of the image-capturing optical lens arrangement of the preceding aspect, where the focal length of the image-capturing optical lens arrangement is f, the maximum image height of the image-capturing optical lens arrangement is ImgH, the radius of curvature of the object-side surface of the second lens element is R3, the radius of curvature of the image-side surface of the second lens element is R4, and the radius of curvature of the image-side surface of the eighth lens element is R16, the following conditions are satisfied: 0.60 < f / ImgH < 1.40; and 1.10 < (|R3|+|R4|+R16) / f < 2.50.

[0026] According to examples of the image-capturing optical lens arrangement of the foregoing aspect, the image-capturing optical lens arrangement may further comprise an aperture diaphragm, wherein if an axial distance between the aperture diaphragm and an image surface is SL, an axial distance between the object-side surface of the first lens element and the image surface is TL, an Abbe number of the third lens element is V3, and an Abbe number of the fourth lens element is V4, the following conditions are satisfied: 0.60 < V3 / V4 < 1.40; and 0.55 < SL / TL < 0.80.

[0027] According to examples of the image-capturing optical lens arrangement of the above aspect, if a distance parallel to an optical axis between a position of maximum effective radius on the object-side surface of the first lens element and a position of maximum effective radius on the image-side surface of the first lens element ET1 is, a distance parallel to the optical axis between a position of maximum effective radius on the object-side surface of the eighth lens element and a position of maximum effective radius on the image-side surface of the eighth lens element ET8 is, and an angle of incidence between a principal ray in a maximum field of view of the image-capturing optical lens arrangement and an image surface CRA is, the following conditions are satisfied: 0.35 < ET8 / ET1 < 2.50; and 0.50 < tan(CRA) < 1.00.

[0028] According to examples of the image-capturing optical lens arrangement of the foregoing aspect, if a displacement parallel with an optical axis from an axial vertex on the object-side surface of the second lens element to a position of maximum effective radius on the object-side surface of the second lens element is SAG2R1, a displacement parallel with the optical axis from an axial vertex on the object-side surface of the eighth lens element to a position of maximum effective radius on the object-side surface of the eighth lens element is SAG8R1, the midpoint thickness of the second lens element is CT2 and the midpoint thickness of the eighth lens element is CT8, the following conditions are satisfied: -2.00 < SAG2R1 / CT2 < -0.50; and -3.00 < SAG8R1 / CT8 < 0.10.

[0029] According to examples of the image-capturing optical lens arrangement of the above aspect, where 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, the axial distance between the fourth lens element and the fifth lens element is T45, the axial distance between the fifth lens element and the sixth lens element is T56, the axial distance between the sixth lens element and the seventh lens element is T67, the axial distance between the seventh lens element and the eighth lens element is T78, the maximum under T12, T23, T34, T45, T56, T67, T78 is ATmax, the central thickness of the first lens element is CT1, the central thickness of the second lens element is CT2, the central thickness of the third lens element is CT3,The following conditions are met if the central thickness of the fourth lens element is CT4, the central thickness of the fifth lens element is CT5, the central thickness of the sixth lens element is CT6, the central thickness of the seventh lens element is CT7, the central thickness of the eighth lens element is CT8, the maximum among CT1, CT2, CT3, CT4, CT5, CT6, CT7, CT8 is CTmax, an axial distance between the image-side surface of the eighth lens element and an image surface BL is, the focal length of the image-capturing optical lens arrangement is f, a radius of curvature of the object-side surface of the second lens element is R3, a radius of curvature of the image-side surface of the second lens element is R4, the radius of curvature of the object-side surface of the seventh lens element is R13, and a radius of curvature of the image-side surface of the eighth lens element is R16: 0.03 ≤ T45 / T56 ≤ 0.37; 0.35 ≤ BL / T12 ≤ 0.81; -0.75 ≤ R3 / f ≤ -0.48; 0.05 ≤ (T23+T34+T45) / T12 ≤ 0,28; -1.06 ≤ f / R13 ≤ 0.05; 0.36 ≤ CTmax / ATmax ≤ 0.98; and 1.44 ≤ (|R3|+|R4|+R16) / f ≤ 1.94.,

[0030] According to one aspect of the present disclosure, an electronic device comprises an imaging device. The imaging device comprises an image-capturing optical lens arrangement of the foregoing aspect and an image sensor, wherein the image sensor is arranged on an image surface of the image-capturing optical lens arrangement. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present disclosure can be more fully understood by reference to the following detailed description of the embodiment and the accompanying drawings: Fig. Figure 1 is a schematic view of an imaging device according to the first embodiment of the present disclosure. Fig.Figure 2 shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging device according to the first embodiment. Fig. Figure 3 is a schematic view of an imaging device according to the second embodiment of the present disclosure. Fig. Figure 4 shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging device according to the second embodiment. Fig. Figure 5 is a schematic view of an imaging device according to the 3rd embodiment of the present disclosure. Fig. Figure 6 shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging device according to the 3rd embodiment. Fig. Figure 7 is a schematic view of an imaging device according to the 4th embodiment of the present disclosure. Fig.Figure 8 shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging device according to the 4th embodiment. Fig. Figure 9 is a schematic view of an imaging device according to the 5th embodiment of the present disclosure. Fig. Figure 10 shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging device according to the 5th embodiment. Fig. Figure 11 is a schematic view of an imaging device according to the 6th embodiment of the present disclosure. Fig. Figure 12 shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging device according to the 6th embodiment. Fig. Figure 13 is a schematic view of an imaging device according to the 7th embodiment of the present disclosure. Fig.Figure 14 shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging device according to the 7th embodiment. Fig. Figure 15 is a schematic view of an imaging device according to the 8th embodiment of the present disclosure. Fig. Figure 16 shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging device according to the 8th embodiment. Fig. Figure 17 is a schematic view of an imaging device according to the 9th embodiment of the present disclosure. Fig. Figure 18 shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging device according to the 9th embodiment. Fig. Figure 19 is a schematic view of an imaging device according to the 10th embodiment of the present disclosure. Fig.Figure 20 shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging device according to the 10th embodiment. Fig. Figure 21 is a schematic view of an imaging device according to the 11th embodiment of the present disclosure. Fig. Figure 22 shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging device according to the 11th embodiment. Fig. Figure 23 is a schematic view of an imaging device according to the 12th embodiment of the present disclosure. Fig. Figure 24 shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging device according to the 12th embodiment. Fig. Figure 25 is a schematic view of an imaging device according to the 13th embodiment of the present disclosure. Fig.Figure 26 shows spherical aberration curves, astigmatic field curves and a distortion curve of the imaging device according to the 13th embodiment. Fig. Figure 27 is a schematic view of the inflection points and critical points of each lens element according to the 1st embodiment. Fig. Figure 28 is a schematic view of the parameters according to the first embodiment. Fig. Figure 29 is a schematic view of an imaging device according to the 14th embodiment of the present disclosure. Fig. Figure 30A is a schematic view of one side of an electronic device according to the 15th embodiment of the present disclosure. Fig. Figure 30B is a schematic view of another side of the electronic device of Fig. 30A. Fig. 30C is a schematic system view of the electronic device of Fig. 30A. Fig.Figure 31 is a schematic view of one side of an electronic device according to the 16th embodiment of the present disclosure. Fig. Figure 32 is a schematic view of one side of an electronic device according to the 17th embodiment of the present disclosure. Fig. Figure 33A is a schematic view of one side of an electronic device according to the 18th embodiment of the present disclosure. Fig. Figure 33B is a schematic view of another side of the electronic device according to an 18th embodiment of Fig. 33A. Fig. Figure 34 is a schematic view of one side of an electronic device according to the 19th embodiment of the present disclosure. Fig. Figure 35 is a schematic view of one side of an electronic device according to the 20th embodiment of the present disclosure. Fig.Figure 36 is a schematic view of an arrangement of a beam path folding element in the image-capturing optical lens arrangement of the present disclosure. DETAILED DESCRIPTION

[0032] An image-capturing optical lens arrangement comprises eight lens elements, arranged in sequence from an object side to an image side along a ray 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, a seventh lens element, and an eighth lens element. Each of the eight lens elements has an object-side surface facing the object and an image-side surface facing the image.

[0033] The object-side surface of the second lens element can be concave in a paraxial region, which is advantageous for correcting spherical aberration by controlling the shape of the object-side surface of the second lens element. The image-side surface of the second lens element can be convex in a paraxial region, which is advantageous for avoiding light divergence and correcting astigmatism.

[0034] The third lens element can have a positive refractive power, which is advantageous for avoiding excessive overall length by adjusting the field of view and balancing the refractive power at the object end of the image-capturing optical lens assembly. The object-side surface of the third lens element can be convex in a paraxial region, which is advantageous for correcting aberrations by improving the light convergence capability of the third lens element.

[0035] The fifth lens element can have a negative refractive power, making it advantageous for increasing the image area by adjusting the direction in which the light travels. The image-side surface of the fifth lens element can be concave in a paraxial region, thus also being advantageous for increasing the image area by compensating for the direction in which the light travels.

[0036] The seventh lens element can have a positive refractive power, making it advantageous for compensating for the refractive power at the image end of the image-capturing optical lens assembly, thereby correcting aberrations. The image-side surface of the seventh lens element can be convex in a paraxial region, making it advantageous for compressing the volume of the image end of the image-capturing optical lens assembly by adjusting the exit direction of the light from the seventh lens element.

[0037] The eighth lens element can have a negative refractive power, making it advantageous for reducing the focal length of the image-capturing optical lens arrangement by controlling the direction in which the light travels. The image-side surface of the eighth lens element can be concave in a paraxial region, making it advantageous for compressing the focal length and correcting field curves.

[0038] The image-side surface of the eighth lens element can include at least one inflection point. This is advantageous for adjusting the beam path in the peripheral region, thus preventing vignetting in the peripheral area and correcting aberrations.

[0039] The image-side surface of the eighth lens element can include at least one critical point. This is advantageous for controlling the exit angle of light from its peripheral region, thereby improving the curvature and distortion of the image surface and increasing image quality.

[0040] If the axial distance between the fourth and fifth lens elements is T45, and the axial distance between the fifth and sixth lens elements is T56, the following condition is met: 0 < T45 / T56 < 1.00. Therefore, the spatial arrangement of the fifth lens element can be adjusted to better match the overall surface design, and the assembly complexity can be reduced. Furthermore, the following conditions can also be met: 0 < T45 / T56 < 0.75. Furthermore, the following conditions can also be met: 0 < T45 / T56 < 0.60. Furthermore, the following conditions can also be met: 0.01 < T45 / T56 < 0.45. Furthermore, the following conditions can also be met: 0.03 ≤ T45 / T56 ≤ 0.37.

[0041] If the axial distance between the first and second lens elements is T12, and the axial distance between the image-side surface of the eighth lens element and the image surface BL is BL, then the following condition is satisfied: 0.20 < BL / T12 < 0.95. This is advantageous for reducing the focal length and avoiding an excessive volume of the image-capturing optical lens assembly, which would make it difficult to reduce the size of the system. Furthermore, the following conditions can be satisfied: 0.25 < BL / T12 < 0.90. Furthermore, the following conditions can be satisfied: 0.30 < BL / T12 < 0.85. Furthermore, the following conditions can be satisfied: 0.35 ≤ BL / T12 ≤ 0.81.

[0042] If the focal length of the image-capturing optical lens arrangement is f and the radius of curvature of the object-side surface of the second lens element is R3, the following condition is satisfied: -1.30 < R3 / f < -0.25. This is advantageous for correcting the spherical aberration of the image-capturing optical lens arrangement by adjusting the degree of curvature to match the shape of the object-side surface of the second lens element. Furthermore, the following conditions can be satisfied: -1.00 < R3 / f < -0.30. Furthermore, the following conditions can be satisfied: -0.80 < R3 / f < -0.40. Furthermore, the following condition can be satisfied: -0.75 ≤ R3 / f ≤ -0.48.

[0043] If the axial distance between the first and second lens elements is T12, the axial distance between the second and third lens elements is T23, the axial distance between the third and fourth lens elements is T34, and the axial distance between the fourth and fifth lens elements is T45, then the following condition is satisfied: 0 < (T23+T34+T45) / T12 < 0.65. This is advantageous for directing the light away from the object end of the image-capturing optical lens arrangement and for limiting the distance between the first and second lens elements by adjusting the arrangement of the space between adjacent lens elements to compress the overall length. Furthermore, the following condition can be satisfied: 0 < (T23+T34+T45) / T12 < 0.50. Furthermore, the following condition can be met: 0.03 < (T23+T34+T45) / T12 < 0.35.Furthermore, the following condition can be met: 0.05 ≤ (T23+T34+T45) / T12 ≤ 0.28.

[0044] If the focal length of the image-capturing optical lens arrangement is f and the radius of curvature of the object-side surface of the seventh lens element is R13, the following condition is satisfied: -1.80 < f / R13 < 0.30. This is advantageous for achieving a balance between increasing the image area and decreasing the focal length by adjusting the surface area and refractive power of the object-side surface of the seventh lens element. Furthermore, the following conditions can be satisfied: -1.60 < f / R13 < 0.10. Furthermore, the following conditions can be satisfied: -1.40 < f / R13 < 0.00. Furthermore, the following conditions can be satisfied: -1.25 < f / R13 < -0.15. Furthermore, the following condition can be satisfied: -1.06 ≤ f / R13 ≤ 0.05.

[0045] If 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, the axial distance between the fourth lens element and the fifth lens element is T45, the axial distance between the fifth lens element and the sixth lens element is T56, the axial distance between the sixth lens element and the seventh lens element is T67, the axial distance between the seventh lens element and the eighth lens element is T78, a maximum under T12, T23, T34, T45, T56, T67, T78 is ATmax, a midpoint thickness of the first lens element is CT1, a midpoint thickness of the second lens element is CT2, a midpoint thickness of the third lens element is CT3, a midpoint thickness of the fourth lens element is CT4, a midpoint thickness of the fifth lens element is CT5,If the midpoint thickness of the sixth lens element CT6, the midpoint thickness of the seventh lens element CT7, the midpoint thickness of the eighth lens element CT8, and the maximum of CT1, CT2, CT3, CT4, CT5, CT6, CT7, CT8 is CTmax, then the following condition is met: 0.15 < CTmax / ATmax < 1.20. This is advantageous for increasing space utilization and preventing excessive overall length. Furthermore, the following condition can be met: 0.25 < CTmax / ATmax < 1.10. Additionally, the following condition can be met: 0.36 ≤ CTmax / ATmax ≤ 0.98.

[0046] If half of the maximum field of view of the image-capturing optical lens array is HFOV, the following condition is met: 0.70 < tan(HFOV) < 1.45. This is advantageous for meeting the device's field of view requirement to accommodate further variable applications. Furthermore, the following condition can also be met: 0.80 < tan(HFOV) < 1.35.

[0047] The image-capturing optical lens arrangement can further include an aperture diaphragm located between the first and fifth lens elements. This is advantageous for achieving a balance between image size, field of view extent, and peripheral illumination. The aperture diaphragm can also be positioned further between the second and fourth lens elements.

[0048] If the focal length of the image-capturing optical lens arrangement is f, and the diameter of the entrance pupil of the image-capturing optical lens arrangement is EPD, then the following condition is met: 1.20 < f / EPD < 2.00. Therefore, the image-capturing optical lens arrangement can achieve a larger aperture, which is advantageous for achieving a balance between illumination and depth of field. Furthermore, the following condition can be met: 1.40 < f / EPD < 1.90.

[0049] If the focal length of the third lens element is f3 and the focal length of the fourth lens element is f4, the following condition is met: -0.30 < f3 / f4 < 2.60. Therefore, the ratio between the third and fourth lens elements can be controlled. This is advantageous for compensating for light convergence or divergence, thus improving the light convergence quality across the entire field of view. Furthermore, the following condition can be met: -0.10 < f3 / f4 < 2.30. Additionally, the following condition can be met: 0 < f3 / f4 < 2.00.

[0050] If the Abbe number of the third lens element is V3 and the Abbe number of the seventh lens element is V7, the following condition is met: 0.20 < V7 / V3 < 0.90. This is advantageous for reducing aberrations, such as chromatic aberration, by matching the materials of the third and seventh lens elements to each other, thus improving image quality.

[0051] If the entrance pupil diameter of the image-capturing optical lens assembly is EPD, and the maximum image height of the image-capturing optical lens assembly is ImgH, the following condition is met: 0.35 < EPD / ImgH < 0.90. Therefore, the aperture diameter can be increased to increase the amount of light and thus improve image brightness. Furthermore, the following condition can also be met: 0.40 < EPD / ImgH < 0.80.

[0052] If the focal length of the image-capturing optical lens arrangement is f, and the maximum image height of the image-capturing optical lens arrangement is ImgH, then the following condition is met: 0.50 < f / ImgH < 1.50. Therefore, this is advantageous for achieving a balance of specifications, such as overall length, aperture, field of view, and image size, etc. Furthermore, the following condition can be met: 0.70 < f / ImgH < 1.30. Additionally, the following condition can be met: 0.60 < f / ImgH < 1.40.

[0053] If the focal length of the first lens element is f1 and the focal length of the eighth lens element is f8, the following condition is satisfied: -0.25 < f8 / f1 < 0.65. Therefore, this is advantageous for balancing the refractive power of the image-capturing optical lens arrangement and for achieving a balance between the field of view and the volume. Furthermore, the following condition can be satisfied: -0.10 < f8 / f1 < 0.55.

[0054] If the radius of curvature of the image-side surface of the second lens element is R4 and the radius of curvature of the object-side surface of the third lens element is R5, the following condition is met: -1.30 < R4 / R5 < -0.40. Therefore, this is advantageous for correcting spherical aberration and coma aberration by having the second and third lens elements work together to improve image clarity. Furthermore, the following condition can also be met: -1.20 < R4 / R5 < -0.50.

[0055] If the radius of curvature of the object-side surface of the second lens element is R3 and the radius of curvature of the object-side surface of the fourth lens element is R7, the following condition is satisfied: -1.50 < (R3+R7) / (R3-R7) < 0. Therefore, this is advantageous for balancing the beam path at the object end of the image-capturing optical lens arrangement, thus correcting aberrations. Furthermore, the following condition can be satisfied: -1.35 < (R3+R7) / (R3-R7) < 0.

[0056] If the focal length of the image-capturing optical lens arrangement is f and the focal length of the second lens element is f2, the following condition is satisfied: -0.40 < f / f2 < 0.30. Therefore, this is advantageous for compensating for aberrations, such as spherical aberration and chromatic aberration, etc., that are produced by the first lens element. Furthermore, the following condition can also be satisfied: -0.30 < f / f2 < 0.20.

[0057] If the focal length of the image-capturing optical lens assembly is f, the radius of curvature of the object-side surface of the second lens element is R3, the radius of curvature of the image-side surface of the second lens element is R4, and the radius of curvature of the image-side surface of the eighth lens element is R16, then the following condition is satisfied: 0.80 < (|R3|+|R4|+R16) / f < 2.70. Therefore, this is advantageous for correcting spherical aberration and image curvature by matching the surface shapes of the second and eighth lens elements. Furthermore, the following condition can be satisfied: 1.10 < (|R3|+|R4|+R16) / f < 2.50. Additionally, the following condition can be satisfied: 1.30 < (|R3|+|R4|+R16) / f < 2.20. Furthermore, the following condition may be met: 1.44≤(|R3|+|R4|+R16) / f≤1.94.

[0058] If the maximum effective radius of the object-side surface of the seventh lens element is Y7R1 and the maximum effective radius of the image-side surface of the eighth lens element is Y8R2, the following condition is satisfied: 1.40 < Y8R2 / Y7R1 < 2.20. Therefore, this is advantageous for adjusting the direction in which the light travels in the peripheral region at the image end of the image-capturing optical lens arrangement, thus increasing the image area. Furthermore, the following condition can be satisfied: 1.50 <Y8R2 / Y7R1<2,00.

[0059] If a displacement parallel to an optical axis from an axial vertex on the image-side surface of the third lens element to a position of maximum effective radius on the image-side surface of the third lens element is SAG3R2, and the central thickness of the third lens element is CT3, then the following condition is satisfied: -0.50 < SAG3R2 / CT3 < 0.30. Therefore, this is advantageous for compressing the volume in the peripheral region of the image-capturing optical lens assembly by controlling the degree of curvature of the surface shape in the peripheral region of the image side of the third lens element. Furthermore, the following condition can be satisfied: -0.40 < SAG3R2 / CT3 < 0.20.

[0060] If a displacement parallel to an optical axis from an axial vertex on the object-side surface of the seventh lens element to a position of maximum effective radius on the object-side surface of the seventh lens element is SAG7R1, and the central thickness of the seventh lens element is CT7, then the following condition is satisfied: -2.00 < SAG7R1 / CT7 < -0.50. Therefore, this is advantageous for effectively controlling the degree of curvature of the surface shape in the peripheral region of the object side of the third lens element, allowing the light deflection angle at the image end of the image-capturing optical lens assembly to be adjusted and ensuring the malleability of the lens element. Furthermore, the following condition can be satisfied: -1.95 < SAG7R1 / CT7 < -0.60.

[0061] If the radius of curvature of the object-side surface of the fifth lens element is R9 and the radius of curvature of the image-side surface of the eighth lens element is R16, the following condition is met: -0.60 < R16 / R9 < 0.30. Therefore, this is advantageous for adjusting the light path by having the fifth and eighth lens elements work together to reduce distortion, lessen the effect of the focal length, and improve light convergence. Furthermore, the following condition can also be met: -0.40 < R16 / R9 < 0.20.

[0062] If the axial distance between the aperture diaphragm and the image-side surface of the eighth lens element is SD, and the axial distance between the image-side surface of the eighth lens element and an image surface is BL, then the following condition is satisfied: 0.05 < BL / SD < 0.35. Therefore, this is advantageous for controlling the volume according to the specified requirements of the image-capturing optical lens arrangement, and it is advantageous for compressing the overall length with respect to the desired image quality. Furthermore, the following condition can be satisfied: 0.10 < BL / SD < 0.30.

[0063] If the center thickness of the third lens element is CT3 and the center thickness of the fifth lens element is CT5, the following condition is met: 0.80 < CT3 / CT5 < 4.00. Therefore, this is advantageous for reducing the volume of the image-capturing optical lens assembly and also for reducing manufacturing tolerances. Furthermore, the following condition can be met: 0.90 < CT3 / CT5 < 3.50.

[0064] If the axial distance between the sixth and seventh lens elements is T67, the axial distance between the seventh and eighth lens elements is T78, the midpoint thickness of the first lens element is CT1, and the midpoint thickness of the eighth lens element is CT8, then the following condition is met: 0.20 < (T67+T78) / (CT1+CT8) < 2.00. Therefore, this is advantageous for controlling the overall length and ensuring a balanced spatial arrangement of the lens elements, thus optimizing the assembly of the image-capturing optical lens array and increasing the yield. Furthermore, the following condition can also be met: 0.30 < (T67+T78) / (CT1+CT8) < 1.80.

[0065] If the Abbe number of the third lens element is V3 and the Abbe number of the fourth lens element is V4, the following condition is met: 0.60 < V3 / V4 < 1.40. Therefore, this is advantageous for compensating for light convergence at different wavebands and correcting chromatic aberration by adjusting the beam path of the image-capturing optical lens arrangement. Furthermore, the following condition can also be met: 0.70 < V3 / V4 < 1.30.

[0066] If the axial distance between the aperture diaphragm and the image surface is SL, and the axial distance between the object-side surface of the first lens element and the image surface is TL, then the following condition is met: 0.55 < SL / TL < 0.80. Therefore, the arrangement of the aperture diaphragm can be adjusted to improve the relative illumination in the peripheral field of view and the image quality, thus achieving a balance between illumination, field depth, and image size.

[0067] If a distance parallel to an optical axis exists between a position of maximum effective radius on the object-side surface of the first lens element and a position of maximum effective radius on the image-side surface of the first lens element ET1, and a distance parallel to an optical axis exists between a position of maximum effective radius on the object-side surface of the eighth lens element and a position of maximum effective radius on the image-side surface of the eighth lens element ET8, then the following condition is satisfied: 0.35 < ET8 / ET1 < 2.50. Therefore, this is advantageous for controlling the directions in which the light travels in the peripheral region at the object end and the image end of the image-capturing optical lens arrangement, and also for controlling the size of the outer diameter. Furthermore, the following condition can be satisfied: 0.40 < ET8 / ET1 < 2.40.

[0068] If the angle of incidence between a principal beam in the maximum field of view of the image-capturing optical lens arrangement and an image surface is CRA, the following condition is met: 0.50 < tan(CRA) < 1.00. Therefore, insufficient illumination in the peripheral area of ​​the image can be avoided, and it is advantageous for improving image clarity and the response efficiency of the image sensor. Furthermore, the following condition can be met: 0.55 < tan(CRA) < 0.90.

[0069] If a displacement parallel to an optical axis from an axial vertex on the object-side surface of the second lens element to a position of maximum effective radius on the object-side surface of the second lens element is SAG2R1, and the midpoint thickness of the second lens element is CT2, then the following condition is met: -2.00 < SAG2R1 / CT2 < -0.50. Therefore, this is advantageous for achieving a balance between the field of view and manufacturing by effectively controlling the curvature of the surface in the peripheral region of the object side of the second lens element. Furthermore, the following condition can be met: -1.90 < SAG2R1 / CT2 < -0.70.

[0070] If a displacement parallel to the optical axis from an axial vertex on the object-side surface of the eighth lens element to a position of maximum effective radius on the object-side surface of the eighth lens element is SAG8R1, and the central thickness of the eighth lens element is CT8, then the following condition is satisfied: -3.00 < SAG8R1 / CT8 < 0.10. Therefore, this is advantageous for correcting distortion and field curvature by controlling the degree of curvature of the shape in the peripheral region of the object side of the eighth lens element. Furthermore, the following condition can be satisfied: -2.80 < SAG8R1 / CT8 < 0.

[0071] Each of the aforementioned features of the image-capturing optical lens arrangement can be used in various combinations to achieve the respective effect.

[0072] According to the image-capturing optical lens arrangement of the present disclosure, the lens elements thereof can be made of glass or plastic material. If the lens elements are made of glass material, the distribution of the refractive power of the image-capturing optical lens arrangement can be designed more flexibly. The glass lens elements can be manufactured either by grinding or casting. If the lens elements are made of plastic material, the manufacturing costs can be effectively reduced. Furthermore, the surfaces of each lens element can be arranged to be aspherical (ASP), since the aspherical surface of the lens element can be easily formed into a shape other than a spherical surface, thus providing more controllable variables for eliminating aberrations and further reducing the required number of lens elements in the image-capturing optical lens arrangement.This also allows the overall length of the image-capturing optical lens assembly to be reduced. The aspherical surfaces can be manufactured using a plastic injection molding process, a glass pressing process, or other manufacturing methods.

[0073] According to the image-capturing optical lens arrangement of the present disclosure, additives can be selectively added to one (or more) of the lens elements to modify the transmittance of the lens element in a specific wavelength range. This allows for the reduction of stray light and chromatic aberration. For example, the additives can exhibit absorption capacity for light in a wavelength range of 600 nm to 800 nm in the image-capturing optical lens arrangement to reduce additional red or infrared light, or the additives can exhibit absorption capacity for light in a wavelength range of 350 nm to 450 nm in the image-capturing optical lens arrangement to reduce blue or ultraviolet light. Thus, the additives can prevent the image from being affected by light in a specific wavelength range.Furthermore, the additives can be homogeneously mixed with the plastic material, and the lens elements can be manufactured using injection molding. In addition, the additives can be applied as a layer to the lens surfaces to achieve the aforementioned effects.

[0074] According to the image-capturing optical lens arrangement of the present disclosure, if a surface of the lens element is aspherical, it means that the entire optically effective region of the surface of the lens element or part thereof is aspherical.

[0075] According to the image-capturing optical lens arrangement of the present disclosure, if the lens elements have convex surfaces and the position of the convex surface is not defined, then the aforementioned surfaces of the lens elements may be convex in their paraxial region. Similarly, if the lens elements have concave surfaces and the position of the concave surface is not defined, then the aforementioned surfaces of the lens elements may be concave in their paraxial region. In the image-capturing optical lens arrangement of the present disclosure, whether the lens element has a positive or negative refractive power, or the focal length of the lens element, can all refer to the refractive power or focal length in the paraxial region of the lens element.

[0076] According to the image-capturing optical lens arrangement of the present disclosure, a critical point is a non-axial point on the lens surface where its tangent is perpendicular to the optical axis; an inflection point is a point on a lens surface with a curvature that changes from positive to negative, or from negative to positive.

[0077] According to the image-capturing optical lens arrangement of the present disclosure, the image surface thereof can be flat or curved, depending on the associated image sensor. In particular, the image surface can be a concave curved surface facing the object. Furthermore, the image-capturing optical lens arrangement of the present disclosure can selectively include at least one image-correcting element (such as an image field flattener) inserted between the lens element closest to the image surface and the image surface, thereby achieving the effect of correcting image aberrations (such as field curvature). The optical properties of the aforementioned image-correcting element, such as curvature, thickness, refractive index, position, surface shape (convex or concave, spherical or aspherical, diffraction area, and Fresnel surface, etc.), can be adapted according to the requirements of the imaging device.In general, a preferred configuration of the image-correcting element is to place a thin plano-concave element with a concave surface facing the object side at the position closest to the image surface.

[0078] According to the image-capturing optical lens arrangement of the present disclosure, at least one element with a beam-path folding function, such as a prism or a mirror, etc., can be selectively arranged between the imaged object and the image surface, wherein the surface of the prism or the reflecting surface of the mirror can be a flat surface, a spherical surface, an aspherical surface, or a freely designed curved surface, etc. This is advantageous for providing a highly flexible spatial arrangement of the image-capturing optical lens arrangement, so that the compactness of the electronic device would not be limited by the overall optical length of the lens arrangement of the photographic system. Furthermore, Fig. 36 A schematic view of an arrangement of a beam path folding element LF in the image-capturing optical lens arrangement of the present disclosure. In Fig.36 comprises the image-capturing optical lens arrangement, in a sequence from an imaged object (not shown in the drawings) to an image surface IMG, a first optical axis OA1, the beam path folding element LF and a second optical axis OA2, wherein the beam path folding element LF can be arranged between the imaged object and a lens group LG of the image-capturing optical lens arrangement, as in Fig. 36 shown. The image-capturing optical lens arrangement can also selectively comprise three or more beam path folding elements, and the type, number and arrangement of the beam path folding element of the present disclosure is not limited thereto.

[0079] Furthermore, according to the image-capturing optical lens arrangement of the present disclosure, the image-capturing optical lens arrangement can include at least one aperture, such as an aperture diaphragm, a glare shield or a field diaphragm, to eliminate stray light and thereby improve the image resolution.

[0080] According to the image-capturing optical lens arrangement of the present disclosure, an aperture control unit can be appropriately configured. The aperture control unit can be a mechanical element or a light control element, and its size and shape can be electrically controlled. The mechanical element can include a movable component such as a vane assembly or a shielding plate. The light control element can include a shielding component such as a light filter, an electrochromic material, a liquid crystal layer, or the like. The amount of incident light or the exposure time of the image can be controlled by the aperture control unit to improve image moderation capabilities.Additionally, the aperture control unit can be the aperture diaphragm of the image-capturing optical lens arrangement of the present disclosure in order to moderate the image quality by changing the f-number, for example by changing the depth of field or the exposure rate.

[0081] According to the image-capturing optical lens arrangement of the present disclosure, one or more optical elements can be appropriately configured to limit the path of light passing through the optical lens system. The optical element mentioned above can be a filter, polarizer, etc., but is not limited to such. Furthermore, the optical element can be a single element, a complex assembly, or in the form of a membrane, but is not limited to such. The optical element mentioned above can be located on the object side, on the image side, or between the lens elements of the image-capturing optical lens arrangement to allow the transmission of specific light that meets the requirements of the applications.

[0082] The image-capturing optical lens arrangement according to the present disclosure can comprise at least one optical lens element, an optical element, or a support. A low-reflection layer is arranged on at least one surface of the at least one optical lens element, the optical element, or the support, wherein the low-reflection layer is advantageously suited to effectively reduce the scattered light formed by the reflection of light at the interface.The low-reflectivity layer may be located in the non-optically effective region of the object-side surface or the image-side surface of the optical lens element, or may be located at the interface between the object-side surface and the image-side surface; wherein the optical element may be at least one of a light-blocking element, an annular spacer element, a housing element, a cover glass, a blue glass, a filter or a color filter, a beam-path folding element, a prism or a mirror, etc.; wherein the support may be a lens group, a lens holder, a microlens arranged on the image sensor, the edge of the image sensor substrate, or a glass layer for protecting the image sensor, etc.

[0083] According to the image-capturing optical lens arrangement of the present disclosure, the image-capturing optical lens arrangement of the present disclosure can be used in (three-dimensional) 3D image capture applications, in products such as digital cameras, mobile devices, digital tablets, smart TVs, surveillance systems, motion detector input devices, tachograph systems, reversing camera systems, wearables, unmanned aerial vehicles and other imaging electronic devices.

[0084] According to the present disclosure, an imaging device, including the aforementioned image-capturing optical lens arrangement, and an image sensor are provided, the image sensor being arranged on the image surface of the image-capturing optical lens arrangement. If the specific conditions are met, this is advantageous for achieving a compact image of the image-capturing optical lens arrangement and maintaining high image quality. Furthermore, the imaging device may also comprise a housing, a mounting, or a combination thereof.

[0085] According to the present disclosure, an electronic device, including the aforementioned imaging device, is provided. This allows for an improvement in image quality. Furthermore, the electronic device may also include a control unit, a display, a storage unit, a RAM (random-access memory unit), or a combination thereof.

[0086] Following the foregoing description of the present disclosure, the following specific embodiments are provided for further explanation. <1. Design>

[0087] Fig. Figure 1 is a schematic view of an imaging device 1 according to the first embodiment of the present disclosure. Fig. Figure 2 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the imaging device 1 according to the first embodiment. Fig.1 The imaging device 1 comprises an image-capturing optical lens arrangement (reference numeral omitted) and an image sensor IS. The image-capturing optical lens arrangement comprises, in an order from an object side to an image side along a beam path, a first lens element E1, a second lens element E2, an aperture diaphragm ST, a third lens element E3, a fourth lens element E4, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, an eighth lens element E8, a filter E9 and an image surface IMG, wherein the image sensor IS is arranged on the image surface IMG of the image-capturing optical lens arrangement.The image-capturing optical lens arrangement comprises eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8) without any additional one or more lens elements inserted between the first lens element E1 and the eighth lens element E8, and there is an air gap along an optical axis between all two adjacent lens elements of the eight lens elements.

[0088] The first lens element E1 with negative refractive power has an object-side surface that is convex in a paraxial region and an image-side surface that is concave in a paraxial region. The first lens element E1 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, Fig. 27 A schematic view of the inflection points IP and the critical points CP of each lens element according to the first embodiment. Fig.21 the image-side surface of the first lens element E1 includes an inflection point IP (as in Fig. 27 shown).

[0089] The second lens element E2, with negative refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The second lens element E2 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the second lens element includes an inflection point IP (as shown in Figure 1). Fig. 27) and the image-side surface of the second lens element includes an inflection point IP (as shown in Fig. 27 shown).

[0090] The third lens element E3, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is also convex in a paraxial region. The third lens element E3 is made of a plastic material, and both the object-side and image-side surfaces are aspherical.

[0091] The fourth lens element E4, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is concave in a paraxial region. The fourth lens element E4 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the image-side surface of the fourth lens element E4 comprises three inflection points IP (as shown in Fig. 27 shown).

[0092] The fifth lens element E5, with negative refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is concave in a paraxial region. The fifth lens element E5 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the fifth lens element E5 comprises three inflection points IP (as shown in Fig. 27) and a critical point CP (as shown in Fig. 27) and the image-side surface of the fifth lens element E5 includes an inflection point IP (as shown in Fig. 27 shown).

[0093] The sixth lens element E6, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is also convex in a paraxial region. The sixth lens element E6 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the image-side surface of the sixth lens element E6 includes an inflection point IP (as shown in Fig. 27) and a critical point CP (as shown in Fig. 27 shown).

[0094] The seventh lens element E7, with positive refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The seventh lens element E7 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the seventh lens element E7 includes an inflection point IP (as shown in Fig. 27) and the image-side surface of the seventh lens element E7 includes an inflection point IP (as shown in Fig. 27) and a critical point CP (as shown in Fig. 27 shown).

[0095] The eighth lens element E8, with negative refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is also concave in a paraxial region. The eighth lens element E8 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the eighth lens element E8 includes two inflection points IP (as shown in Fig. 27) and the image-side surface of the eighth lens element E8 includes an inflection point IP (as shown in Fig. 27) and a critical point CP (as shown in Fig. 27 shown).

[0096] The E9 filter consists of a glass material arranged in sequence between the eighth lens element E8 and the image surface IMG, and it does not affect the focal length of the image-capturing optical lens arrangement.

[0097] The equation of the aspherical surface profiles of the aforementioned lens elements of the first embodiment is expressed as follows: X(Y)=(Y2 / R) / (1+sqrt(1−(1+k)×(Y / R)2))+∑i(Ai)×(Yi) , where X is the displacement parallel with an optical axis from the intersection of the aspherical surface and the optical axis 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 conic coefficient; and Ai is the i-th aspheric coefficient.

[0098] In the image-capturing optical lens arrangement according to the first embodiment, where the focal length of the image-capturing optical lens arrangement is f, the f-number of the image-capturing optical lens arrangement is Fno, and half of the maximum field of view of the image-capturing optical lens arrangement is HFOV, these parameters have the following values: f = 6.35 mm; Fno = 1.62; and HFOV = 46.1 degrees.

[0099] In the image-capturing optical lens arrangement according to the 1st embodiment, if the maximum field of view of the image-capturing optical lens arrangement is FOV, the following condition is met: FOV = 92.2 degrees.

[0100] In the image-capturing optical lens arrangement according to the 1st embodiment, if the focal length of the image-capturing optical lens arrangement is f, and the diameter of the entrance pupil of the image-capturing optical lens arrangement is EPD, the following condition is met: f / EPD = 1.62.

[0101] In the image-capturing optical lens arrangement according to the 1st embodiment, if half of a maximum field of view of the image-capturing optical lens arrangement is HFOV, the following condition is met: tan(HFOV) = 1.04.

[0102] In the image-capturing optical lens arrangement according to the 1st embodiment, if the diameter of the entrance pupil of the image-capturing optical lens arrangement is EPD and a maximum image height of the image-capturing optical lens arrangement is ImgH (half of a diagonal length of an effective photosensitive area of ​​the image sensor IS), the following condition is met: EPD / ImgH = 0.58.

[0103] In the image-capturing optical lens arrangement according to the 1st embodiment, if the focal length of the image-capturing optical lens arrangement is f and the maximum image height of the image-capturing optical lens arrangement is ImgH, the following condition is met: f / ImgH = 0.94.

[0104] In the image-capturing optical lens arrangement according to the 1st embodiment, if there is an axial distance between the aperture diaphragm ST and the image surface IMG SL, and an axial distance between the object-side surface of the first lens element E1 and the image surface IMG TL, the following condition is met: SL / TL = 0.60.

[0105] In the image-capturing optical lens arrangement according to the 1st embodiment, if an axial distance between the eighth lens element E8 and the image surface IMG is BL, and an axial distance between the aperture diaphragm ST and the image-side surface of the eighth lens element E8 is SD, the following condition is met: BL / SD = 0.19.

[0106] In the image-capturing optical lens arrangement according to the 1st embodiment, if the focal length of the image-capturing optical lens arrangement is f and a focal length of the second lens element E2 is f2, the following condition is met: f / f2 = -0.06.

[0107] In the image-capturing optical lens arrangement according to the 1st embodiment, if the focal length of the first lens element E1 is f1 and the focal length of the eighth lens element E8 is f8, the following condition is met: f8 / f1 = 0.12.

[0108] In the image-capturing optical lens arrangement according to the 1st embodiment, if the focal length of the third lens element E3 is f3 and the focal length of the fourth lens element E4 is f4, the following condition is met: f3 / f4 = 0.04.

[0109] In the image-capturing optical lens arrangement according to the 1st embodiment, if a focal length of the image-capturing optical lens arrangement is f and a radius of curvature of the object-side surface of the second lens element E2 is R3, the following condition is met: R3 / f= -0.50.

[0110] In the image-capturing optical lens arrangement according to the 1st embodiment, if the focal length of the image-capturing optical lens arrangement is f and a radius of curvature of the object-side surface of the seventh lens element E7 is R13, the following condition is met: f / R13 = - 0.39.

[0111] In the image-capturing optical lens arrangement according to the 1st embodiment, if a radius of curvature of the image-side surface of the second lens element E2 is R4 and a radius of curvature of the object-side surface of the third lens element E3 is R5, the following condition is met: R4 / R5 = -0.79.

[0112] In the image-capturing optical lens arrangement according to the 1st embodiment, if a radius of curvature of the object-side surface of the fifth lens element E5 is R9 and a radius of curvature of the image-side surface of the eighth lens element E8 is R16, the following condition is met: R16 / R9 = 0.08.

[0113] In the image-capturing optical lens arrangement according to the 1st embodiment, if the radius of curvature of the object-side surface of the second lens element is R3 and the radius of curvature of the object-side surface of the fourth lens element is R7, the following condition is met: (R3+R7) / (R3−R7)=−0.78.

[0114] In the image-capturing optical lens arrangement according to the first embodiment, if the focal length of the image-capturing optical lens arrangement is f, the radius of curvature of the object-side surface of the second lens element E2 is R3, the radius of curvature of the image-side surface of the second lens element E2 is R4, and the radius of curvature of the image-side surface of the eighth lens element E8 is R16, the following condition is met: (|R3|+|R4|+R16) / f = 1.60.

[0115] In the image-capturing optical lens arrangement according to the first embodiment, where 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 axial distance between the third lens element E3 and the fourth lens element E4 is T34, the axial distance between the fourth lens element E4 and the fifth lens element E5 is T45, the axial distance between the fifth lens element E5 and the sixth lens element E6 is T56, the axial distance between the sixth lens element E6 and the seventh lens element E7 is T67, the axial distance between the seventh lens element E7 and the eighth lens element E8 is T78, the maximum under T12, T23, T34, T45, T56, T67, T78 is ATmax, the central thickness of the first lens element E1 is CT1, and the central thickness of the second lens element E2 is CT2 isThe following condition is met if the central thickness of the third lens element E3 is CT3, the central thickness of the fourth lens element E4 is CT4, the central thickness of the fifth lens element E5 is CT5, the central thickness of the sixth lens element E6 is CT6, the central thickness of the seventh lens element E7 is CT7, the central thickness of the eighth lens element E8 is CT8, and the maximum among CT1, CT2, CT3, CT4, CT5, CT6, CT7, CT8 is CTmax: CTmax / ATmax = 0.36. According to the first embodiment, the axial distance between two adjacent lens elements, that is, the distance on the optical axis between two adjacent surfaces of two adjacent lens elements,

[0116] In the image-capturing optical lens arrangement according to the 1st embodiment, if the central thickness of the third lens element E3 is CT3 and the central thickness of the fifth lens element E5 is CT5, the following condition is met: CT3 / CT5 = 2.03.

[0117] In the image-capturing optical lens arrangement according to the first embodiment, if the axial distance between the sixth lens element E6 and the seventh lens element E7 is T67, the axial distance between the seventh lens element E7 and the eighth lens element E8 is T78, the central thickness of the first lens element E1 is CT1 and the central thickness of the eighth lens element E8 is CT8, the following condition is met: (T67+T78) / (CT1+CT8)=1.37.

[0118] In the image-capturing optical lens arrangement according to the 1st embodiment, if the axial distance between the image-side surface of the eighth lens element E8 and the image surface IMG is BL, and the axial distance between the first lens element E1 and the second lens element E2 is T12, the following condition is met: BL / T12 = 0.35.

[0119] In the image-capturing optical lens arrangement according to the 1st embodiment, if the axial distance between the fourth lens element E4 and the fifth lens element E5 is T45 and the axial distance between the fifth lens element E5 and the sixth lens element E6 is T56, the following condition is met: T45 / T56 = 0.37.

[0120] In the image-capturing optical lens arrangement according to the first embodiment, if 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 axial distance between the third lens element E3 and the fourth lens element E4 is T34, and the axial distance between the fourth lens element E4 and the fifth lens element E5 is T45, the following condition is met: (T23+T34+T45) / T12=0.07.

[0121] In the image-capturing optical lens arrangement according to the 1st embodiment, if an Abbe number of the third lens element E3 is V3 and an Abbe number of the fourth lens element E4 is V4, the following condition is met: V3 / V4 = 0.99.

[0122] In the image-capturing optical lens arrangement according to the 1st embodiment, if the Abbe number of the third lens element E3 is V3 and the Abbe number of the seventh lens element E7 is V7, the following condition is met: V7 / V3 = 0.46.

[0123] Fig. Figure 28 is a schematic view of the parameters according to the first embodiment. Fig. 28, if an angle of incidence between a principal ray in a maximum field of view of the image-capturing optical lens arrangement and the image surface is IMG CRA (as in Fig. 28 shown), the following condition is met: tan(CRA) = 0.76.

[0124] Fig.Figure 28 is a schematic view of the parameters according to the first embodiment. Fig. 28, if a distance parallel to the optical axis is between a position of a maximum effective radius on the object-side surface of the first lens element E1 and a position of a maximum effective radius on the image-side surface of the first lens element E1 ET1 (as in Fig. 28), and a distance parallel to the optical axis between a position of maximum effective radius on the object-side surface of the eighth lens element E8 and a position of maximum effective radius on the image-side surface of the eighth lens element E8 ET8 is (as in Fig. 28 shown), the following condition is met: ET8 / ET1 = 1.51.

[0125] Fig. Figure 28 is a schematic view of the parameters according to the first embodiment. Fig.28, if a displacement parallel with an optical axis from an axial vertex on the object-side surface of the second lens element E2 to a position of maximum effective radius on the object-side surface of the second lens element E2 is SAG2R1 (as in Fig. 28) and the central thickness of the second lens element E2 CT2 is, the following condition is met: SAG2R1 / CT2 = - 1.80.

[0126] Fig. Figure 28 is a schematic view of the parameters according to the first embodiment. Fig. 28, if a displacement parallel with an optical axis from an axial vertex on the image-side surface of the third lens element E3 to a position of maximum effective radius on the image-side surface of the third lens element E3 is SAG3R2 (as in Fig. 28 shown) and the central thickness of the third lens element E3 CT3 is, the following condition is met: SAG3R2 / CT3 = -0.25.

[0127] Fig. Figure 28 is a schematic view of the parameters according to the first embodiment. If a displacement parallel with an optical axis from an axial vertex on the object-side surface of the seventh lens element E7 to a position of maximum effective radius on the object-side surface of the seventh lens element E7 SAG7R1 (as in Fig. 28) and the central thickness of the seventh lens element E7 CT7 is, the following condition is met: SAG7R1 / CT7 = -1.74.

[0128] Fig. Figure 28 is a schematic view of the parameters according to the first embodiment. Fig. 28, if a displacement parallel to the optical axis from an axial vertex on the object-side surface of the eighth lens element E8 to a position of maximum effective radius on the object-side surface of the eighth lens element E8 SAG8R1 is (as in Fig.28 shown) and the central thickness of the eighth lens element E8 CT8 is, the following condition is met: SAG8R1 / CT8 = -0.85.

[0129] Fig. Figure 28 is a schematic view of the parameters according to the first embodiment. Fig. 28, if a maximum effective radius of the object-side surface of the seventh lens element is E7 Y7R1 (as in Fig. 28) and a maximum effective radius of the image-side surface of the eighth lens element E8 Y8R2 is (as in Fig. (as shown in 28), the following condition is met: Y8R2 / Y7R1 = 1.60.

[0130] The detailed optical data of the 1st embodiment are shown in Table 1A and the aspherical surface data are shown in Table 1B below. Table 1A - 1. Design f = 6.35 mm, Fno = 1.62, HFOV = 46.1 degrees Surface No. radius of curvature thickness material index Abbe number Focal length 0 object Infinite Infinite 1 Lens 1 13,8031 ASP 0,570 plastic 1,535 55,9 -23,94 2 6,5451 ASP 4,676 3 Lens 2 -3,1676 ASP 0,806 plastic 1,551 44,8 -111,84 4 -3,6411 ASP 0,746 5 Ape.blende Flat -0,696 6 Lens 3 4,6374 ASP 1,698 plastic 1,544 56,0 6,50 7 -12,9386 ASP 0,050 8 Lens 4 25,9784 ASP 0,849 plastic 1,511 56,8 167,45 9 36,8958 ASP 0,232 10 Lens 5 43,5266 ASP 0,836 plastic 1,680 18,2 -11,89 11 6,7641 ASP 0,627 12 Lens 6 13,6554 ASP 1,233 plastic 1,544 56,0 10,19 13 -9,0287 ASP 2,110 14 Lens 7 -16,4121 ASP 0,786 plastic 1,614 26,0 4,25 15 -2,2904 ASP 0,035 16 Lens 8 -4,5440 ASP 0,998 plastic 1,614 26,0 -2,98 17 3,3186 ASP 0,588 18 filter Flat 0,160 Glass 1,517 64,2 - 19 Flat 0,901 20 Picture Flat - The reference wavelength is 587.6 nm (d-line). Table 1B - Aspheric coefficients Surface No. 1 2 3 4 6 7 k= 1,23193E+00 4,96633E-01 -4,92939E+00 -5,29648E+00 -1,32810E+00 9,35721 E+00 A4 = 5,894677E-03 7,141474E-03 -6,929073E-03 -5,367323E-03 -2,876683E-03 -5,988482E-03 A6 = -4,774103E-04 -4,223092E-04 7,066701 E-04 7,919313E-04 6,060968E-04 1,658997E-03 A8 = 3,753773E-05 2,973500E-05 -3,280127E-05 -5,161637E-05 -7,242791E-05 -2,378539E-04 A10 = -2,449840E-06 -1,258432E-06 9,376250E-07 2,724701 E-06 5,817381 E-06 1,945280E-05 A12 = 1,113345E-07 1,163825E-08 -1,492302E-08 -6,267989E-08 -2,746309E-07 -7,094420E-07 A14 = -3,354219E-09 A16 = 6,161770E-11 A18 = -5,139823E-13 Surface No. 8 9 10 11 12 13 k = 2,66248E+01 -9,00000E+01 1,79538E+01 5,93132E-01 1,15783E+01 -1,64279E+01 A4 = 1,319431 E-03 1,457827E-03 -7,047826E-03 -7,344799E-03 -4,126929E-03 -3,522183E-03 A6 = -9,321243E-04 -1,800510E-03 2,366422E-03 2,958392E-03 7,003314E-04 4,338136E-04 A8 = 3,907263E-04 6,413124E-04 -3,641183E-04 -5,623059E-04 -1,854390E-04 -1,501794E-04 A10 = -9,535958E-05 -1,407301 E-04 2,033694E-05 6,497537E-05 4,420324E-05 4,256914E-05 A12 = 1,261396E-05 1,750002E-05 1,270756E-06 -3,500233E-06 -9,862693E-06 -8,939577E-06 A14 = -8,049609E-07 -9,607760E-07 -1,538185E-07 -6,066664E-09 1,585966E-06 1,165482E-06 A16 = 1,973274E-08 1,343530E-08 4,869687E-09 -1,450567E-07 -8,069614E-08 A18 = 7,014252E-09 2,429657E-09 A20 = -1,454968E-10 Surface No. 14 15 16 17 k = 1,46060E+01 -9,04319E+00 -3,10322E+01 -1,41219E+01 A4 = -6,071682E-03 1,611103E-03 2,493595E-03 -4,977087E-03 A6 = 3,019809E-03 -8,673848E-04 -5,347142E-03 3,237516E-04 A8 = -1,489002E-03 -3,316620E-04 1,537120E-03 -7,388081 E-06 A10 = 3,625822E-04 1,869255E-04 -2,178245E-04 -1,006379E-06 A12 = -5,401324E-05 -3,849786E-05 1,843789E-05 9,714759E-08 A14 = 4,871902E-06 4,498371 E-06 -9,826136E-07 -3,044459E-09 A16 = -2,395996E-07 -3,217485E-07 3,278988E-08 -1,834815E-11 A18 = 4,885030E-09 1,393224E-08 -6,449894E-10 3,724011 E-12 A20 = -3,356735E-10 6,349753E-12 -9,138471 E-14 A22 = 3,458283E-12 -1,838665E-14 7,364076E-16

[0131] Table 1A lists the radius of curvature, thickness, and focal length in millimeters (mm). Surface numbers 0–20 represent the surfaces arranged sequentially from the object side to the image side along the optical axis. In Table 1B, k represents the conic coefficient of the equation for the aspherical surface profiles. A4–A22 represent the aspherical coefficients from the 4th to the 22nd order. The tables below, listed for each embodiment, correspond to the schematic parameters and aberration curves of that embodiment, and the definitions in the tables are the same as in Tables 1A and 1B of the first embodiment. Therefore, no further explanation is needed. <2nd embodiment>

[0132] Fig. Figure 3 is a schematic view of an imaging device 2 according to the second embodiment of the disclosure. Fig.Figure 4 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the imaging device 2 according to the second embodiment. Fig.3 The imaging device 2 comprises an image-capturing optical lens arrangement (reference numerals omitted) and an image sensor IS. The image-capturing optical lens arrangement comprises, in an order from an object side to an image side along a beam path, a first lens element E1, a second lens element E2, an aperture diaphragm ST, a third lens element E3, a fourth lens element E4, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, an eighth lens element E8, a filter E9 and an image surface IMG, wherein the image sensor IS is arranged on the image surface IMG of the image-capturing optical lens arrangement.The image-capturing optical lens arrangement comprises eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8) without any additional one or more lens elements inserted between the first lens element E1 and the eighth lens element E8, and there is an air gap along an optical axis between all two adjacent lens elements of the eight lens elements.

[0133] The first lens element E1, with negative refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is also concave in a paraxial region. The first lens element E1 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the first lens element E1 includes an inflection point and a critical point.

[0134] The second lens element E2, with positive refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The second lens element E2 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the second lens element E2 includes an inflection point, and the image-side surface of the second lens element E2 includes an inflection point and a critical point.

[0135] The third lens element E3, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is concave in a paraxial region. The third lens element E3 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the third lens element E3 includes an inflection point, and the image-side surface of the third lens element E3 includes an inflection point and a critical point.

[0136] The fourth lens element E4, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is also convex in a paraxial region. The fourth lens element E4 is made of a glass material, and both the object-side and image-side surfaces are spherical.

[0137] The fifth lens element E5, with negative refractive power, has an object-side surface that is concave in a paraxial region, and an image-side surface that is also concave in a paraxial region. The fifth lens element E5 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the image-side surface of the fifth lens element E5 includes an inflection point.

[0138] The sixth lens element E6, with positive refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The sixth lens element E6 is made of a plastic material, and both the object-side and image-side surfaces are aspheric. Furthermore, the object-side surface of the sixth lens element E6 includes two inflection points, and the image-side surface of the sixth lens element E6 includes one inflection point.

[0139] The seventh lens element E7, with negative refractive power, has an object-side surface that is concave in a paraxial region, and an image-side surface that is also concave in a paraxial region. The seventh lens element E7 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the seventh lens element E7 includes one inflection point, and the image-side surface of the seventh lens element E7 includes two inflection points and one critical point.

[0140] The eighth lens element E8, with negative refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is concave in a paraxial region. The eighth lens element E8 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the eighth lens element E8 includes three inflection points and two critical points, and the image-side surface of the eighth lens element E8 includes three inflection points and one critical point.

[0141] The E9 filter consists of a glass material arranged in sequence between the eighth lens element E8 and the image surface IMG, and it does not affect the focal length of the image-capturing optical lens arrangement.

[0142] The detailed optical data of the 2nd embodiment are shown in Table 2A and the aspherical surface data are shown in Table 2B below. Table 2A - 2nd embodiment f = 6.34 mm, Fno = 1.57, HFOV = 48.1 degrees Surface No. radius of curvature thickness material index Abbe number Focal length 0 object Infinite Infinite 1 Lens 1 -29,8963 ASP 2,296 plastic 1,566 37,4 -37,97 2 78,5633 ASP 2,473 3 Lens 2 -3,4786 ASP 0,730 plastic 1,544 56,0 486,99 4 -3,6874 ASP 0,585 5 Ape.blende Flat -0,507 6 Lens 3 5,1007 ASP 1,186 plastic 1,544 56,0 14,65 7 13,0119 ASP 0,514 8 Lens 4 11,2555 (SPH) 1,448 Glass 1,729 54,7 7,79 9 -10,8480 (SPH) 0,090 10 Lens 5 -20,5502 ASP 0,531 plastic 1,615 25,3 -13,62 11 14,3050 ASP 0,710 12 Lens 6 -136,6806 ASP 1,918 plastic 1,544 56,0 8,45 13 -4,4698 ASP 0,092 14 Lens 7 -13,8896 ASP 0,641 plastic 1,639 23,5 -19,85 15 147,3331 ASP 1,689 16 Lens 8 6,9489 ASP 0,730 plastic 1,587 28,3 -10,01 17 3,0607 ASP 0,650 18 filter Flat 0,210 Glass 1,517 64,2 - 19 Flat 0,448 20 Picture Flat - The reference wavelength is 587.6 nm (d-line). Table 2B - Aspheric coefficients Surface No. 1 2 3 4 6 7 k= 1,81830E+01 -9,00000E+01 -6,79584E+00 -7,25693E+00 -1,27670E+00 -8,73325E+01 A4 = 2,341496E-03 3,744778E-03 -6,772230E-03 -7,861506E-03 -4,416755E-03 -3,735128E-03 A6 = -5,451723E-05 1,300963E-04 8,703912E-04 1,866581 E-03 1,316203E-03 5,435811 E-04 A8 = 4,343018E-07 -4,330158E-05 -3,351025E-05 -2,461834E-04 -2,162867E-04 -1,089081 E-04 A10 = 8,362030E-08 5,316359E-06 1,558157E-07 2,781873E-05 2,283744E-05 1,383197E-05 A12 = -5,291519E-09 -3,036325E-07 1,314794E-08 -1,840682E-06 -1,204684E-06 -9,169358E-07 A14 = 1,563956E-10 6,194312E-09 5,494599E-08 A16 = -2,421088E-12 A18 = 1,621665E-14 Surface No. 10 11 12 13 14 15 k = 3,96793E+01 -1,66424E-01 -7,23807E+01 8,24992E-02 -2,44257E+01 9,00000E+01 A4 = -1,912337E-04 1,543803E-03 -2,951309E-03 1,141370E-02 8,234080E-03 2,715765E-03 A6 = 1,228511 E-03 1,257182E-03 8,2061 00E-04 -5,910019E-03 -3,873037E-03 -6,036852E-04 A8 = -5,312891E-04 -4,482118E-04 -1,376530E-04 2,258734E-03 8,029489E-04 -1,436271 E-05 A10 = 9,420627E-05 7,251771 E-05 3,984056E-06 -5,856651 E-04 -1,380766E-04 1,106410E-05 A12 = -8,772471 E-06 -7,034080E-06 2,962950E-06 9,548741 E-05 1,553352E-05 -1,096102E-06 A14 = 3,302858E-07 3,916267E-07 -6,962623E-07 -9,321442E-06 -9,841119E-07 5,027428E-08 A16 = -1,000682E-08 7,092382E-08 4,962115E-07 2,616290E-08 -1,125725E-09 A18 = -2,706053E-09 -1,095631 E-08 9,844697E-12 Surface No. 16 17 k= -7,19519E+01 -6,54955E+00 A4 = -1,430108E-02 -1,100976E-02 A6 = 9,791516E-04 1,500281 E-03 A8 = -8,440905E-05 -1,663622E-04 A10 = 1,158149E-05 1,245127E-05 A12 = -9,418811E-07 -6,130549E-07 A14 = 4,257362E-08 1,966363E-08 A16 = -1,097725E-09 -3,942907E-10 A18 = 1,527099E-11 4,475155E-12 A20 = -8,952639E-14 -2,192990E-14

[0143] In the second embodiment, the equation for the aspherical surface profiles of the aforementioned lens elements is the same as the equation for the first embodiment. Likewise, the definitions of these parameters, which are given in the following table, are the same as in the first embodiment, with corresponding values ​​for the second embodiment; therefore, no further explanation is required in this regard.

[0144] Furthermore, these parameters from Table 2A and Table 2B can be calculated as the following values ​​and they satisfy the following conditions in Table 2C: Table 2C - 2nd embodiment f [mm] 6,34 (R3+R7) / (R3-R7) -0,53 Fno 1,57 (|R3|+|R4|+R16) / f 1,61 HFOV [Grade] 48,1 CTmax / ATmax 0,93 FOV [degrees] 96,2 CT3 / CT5 2,23 f / EPD 1,57 (T67+T78) / (CT1 +CT8) 0,59 tan(HFOV) 1,11 BL / T12 0,53 EPD / lmgH 0,56 T45 / T56 0,13 f / lmgH 0,89 (T23+T34+T45) / T12 0,28 SL / TL 0,63 V3 / V4 1,02 BL / SD 0,14 V7 / V3 0,42 f / f2 0,01 tan(CRA) 0,70 f8 / f1 0,26 ET8 / ET1 0,57 f3 / f4 1,88 SAG2R1 / CT2 -1,55 R3 / f -0,55 SAG3R2 / CT3 0,02 f / R13 -0,46 SAG7R1 / CT7 -1,75 R4 / R5 -0,72 SAG8R1 / CT8 -1,17 R16 / R9 -0,15 Y8R2 / Y7R1 1,85 <3. Design>

[0145] Fig. Figure 5 is a schematic view of an imaging device 3 according to the 3rd embodiment of the disclosure. Fig. Figure 6 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the imaging device 3 according to the third embodiment. Fig.5 The imaging device 3 comprises an image-capturing optical lens arrangement (reference numerals omitted) and an image sensor IS. The image-capturing optical lens arrangement comprises, in an order from an object side to an image side along a beam path, a first lens element E1, a second lens element E2, a third lens element E3, an aperture diaphragm ST, a fourth lens element E4, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, an eighth lens element E8, a filter E9 and an image surface IMG, wherein the image sensor IS is arranged on the image surface IMG of the image-capturing optical lens arrangement.The image-capturing optical lens arrangement comprises eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8) without any additional one or more lens elements inserted between the first lens element E1 and the eighth lens element E8, and there is an air gap along an optical axis between all two adjacent lens elements of the eight lens elements.

[0146] The first lens element E1, with negative refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is concave in a paraxial region. The first lens element E1 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the image-side surface of the first lens element E1 includes an inflection point.

[0147] The second lens element E2, with negative refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The second lens element E2 is made of glass, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the second lens element E2 includes an inflection point, and the image-side surface of the second lens element E2 includes an inflection point and a critical point.

[0148] The third lens element E3, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is also convex in a paraxial region. The third lens element E3 is made of glass, and both the object-side and image-side surfaces are aspherical. Furthermore, the image-side surface of the third lens element E3 includes an inflection point.

[0149] The fourth lens element E4, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is also convex in a paraxial region. The fourth lens element E4 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the image-side surface of the fourth lens element E4 includes an inflection point.

[0150] The fifth lens element E5, with negative refractive power, has an object-side surface that is concave in a paraxial region, and an image-side surface that is also concave in a paraxial region. The fifth lens element E5 is made of a plastic material, and both the object-side and image-side surfaces are aspherical.

[0151] The sixth lens element E6, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is also convex in a paraxial region. The sixth lens element E6 is made of a glass material, and both the object-side and image-side surfaces are aspheric. Furthermore, the object-side surface of the sixth lens element E6 includes two inflection points and two critical points, and the image-side surface of the sixth lens element E6 includes one inflection point.

[0152] The seventh lens element E7, with positive refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The seventh lens element E7 is made of a plastic material, and both the object-side and image-side surfaces are aspheric. Furthermore, the object-side surface of the seventh lens element E7 includes one inflection point, and the image-side surface of the seventh lens element E7 includes three inflection points.

[0153] The eighth lens element E8, with negative refractive power, has an object-side surface that is concave in a paraxial region, and an image-side surface that is also concave in a paraxial region. The eighth lens element E8 is made of a plastic material, and both the object-side and image-side surfaces are aspheric. Furthermore, the object-side surface of the eighth lens element E8 includes two inflection points, and the image-side surface of the eighth lens element E8 includes one inflection point and one critical point.

[0154] The E9 filter consists of a glass material arranged in sequence between the eighth lens element E8 and the image surface IMG, and it does not affect the focal length of the image-capturing optical lens arrangement.

[0155] The detailed optical data of the 3rd embodiment are shown in Table 3A and the aspherical surface data are shown in Table 3B below. Table 3A - 3. Design f = 7.55 mm, Fno = 1.60, HFOV = 40.5 degrees Surface No. radius of curvature thickness material index Abbe number Focal length 0 object Infinite Infinite 1 Lens 1 27,0421 ASP 0,507 plastic 1,529 45,4 -44,04 2 12,4360 ASP 3,403 3 Lens 2 -5,6818 ASP 1,081 Glass 1,606 43,9 -415,26 4 -6,2303 ASP 0,036 5 Lens 3 6,1047 ASP 1,628 Glass 1,547 62,7 9,45 6 -30,4005 ASP -0,124 7 Ape.blende Flat 0,243 8 Lens 4 7,5646 ASP 1,298 plastic 1,544 56,0 10,65 9 -23,2563 ASP 0,067 10 Lens 5 -259,8726 ASP 0,511 plastic 1,615 25,3 -9,10 11 5,7306 ASP 0,993 12 Lens 6 33,5992 ASP 0,753 Glass 1,729 54,7 19,20 13 -23,7756 ASP 1,634 14 Lens 7 -17,9648 ASP 1,655 plastic 1,587 28,3 5,44 15 -2,8053 ASP 0,039 16 Lens 8 -10,6037 ASP 0,911 plastic 1,584 28,2 -3,63 17 2,7388 ASP 0,900 18 filter Flat 0,200 Glass 1,517 64,2 - 19 Flat 0,563 20 Picture Flat - The reference wavelength is 587.6 nm (d-line). Table 3B - Aspheric coefficients Surface No. 1 2 3 4 5 6 k= 1,82615E+01 4,14551E-01 -7,68331 E+00 -7,24247E+00 -1,00570E+00 5,77012E+01 A4 = 5,638137E-03 6,956242E-03 -4,035815E-03 -2,718421 E-03 -1,039248E-03 -4,056542E-03 A6 = -3,811756E-04 -3,617855E-04 1,587806E-04 2,124049E-04 1,203637E-04 3,789840E-04 A8 = 2,412562E-05 2,026458E-05 -1,650179E-06 -3,704861 E-06 -1,195793E-05 -2,079083E-05 A10 = -1,564325E-06 -1,163992E-06 1,693271E-07 1,686931 E-07 2,218336E-07 9,327210 E-07 A12 = 7,134753E-08 2,234897E-08 -6,689285E-09 5,537858E-09 3,437271 E-08 -4,104214E-09 A14 = -2,075115E-09 A16 = 3,839018E-11 A18 = -3,561812E-13 Surface No. 8 9 10 11 12 13 k = -6,38986E-02 9,33405E+00 9,00000E+01 8,35047E-01 -7,92855E+01 1,83509E+01 A4 = -9,436215E-04 3,614377E-03 -1,703652E-03 -4,504882E-03 -2,451974E-03 -2,522327E-03 A6 = 3,922190E-05 -2,312350E-03 -3,945053E-04 1,519179E-03 -8,892384E-05 -5,960727E-05 A8 = -8,959104E-07 5,535574E-04 2,424489E-04 -2,283066E-04 -3,747073E-05 -7,722192E-05 A10 = 1,617956E-06 -7,143959E-05 -4,173053E-05 2,501056E-05 2,761791 E-05 3,129075E-05 A12 = -1,435359E-09 5,197846E-06 3,252747E-06 -1,976759E-06 -7,917721 E-06 -6,170189E-06 A14 = -1,618587E-07 -1,077095E-07 1,076914E-07 1,429986E-06 7,260462E-07 A16 = -2,380252E-09 -1,571082E-07 -4,727113E-08 A18 = 1,017771 E-08 1,450362E-09 A20 = -2,917828E-10 Surface No. 14 15 16 17 k= 1,52114E+01 -1,04984E+01 -3,57550E+01 -1,07803E+01 A4 = -1,987688E-03 1,344996E-03 -2,868791E-03 -6,696117E-03 A6 = -2,339068E-04 -1,878207E-03 -3,573549E-03 6,058712E-04 A8 = -3,195966E-04 3,658278E-04 1,219764E-03 -2,018330E-05 A10 = 1,175494E-04 -8,643953E-06 -1,794396E-04 -1,839397E-06 A12 = -2,301513E-05 -4,895244E-06 1,556186E-05 2,667252E-07 A14 = 2,557892E-06 7,099663E-07 -8,699309E-07 -1,568412E-08 A16 = -1,564373E-07 -4,731405E-08 3,196922E-08 5,311380E-10 A18 = 4,153329E-09 1,756461E-09 -7,514279E-10 -1,080653E-11 A20 = -3,537086E-11 1,029901 E-1 1 1,243693E-13 A22 = 3,042392E-13 -6,291552E-14 -6,343362E-16

[0156] In the third embodiment, the equation for the aspherical surface profiles of the aforementioned lens elements is the same as the equation for the first embodiment. Likewise, the definitions of these parameters, which are given in the following table, are the same as in the first embodiment, with corresponding values ​​for the third embodiment; therefore, no further explanation is required in this regard.

[0157] Furthermore, these parameters from Table 3A and Table 3B can be calculated as the following values ​​and they satisfy the following conditions in Table 3C: Table 3C - 3. Design f [mm] 7,55 (R3+R7) / (R3-R7) -0,14 Fno 1,60 (|R3|+|R4|+R16) / f 1,94 HFOV [Grade] 40,5 CTmax / ATmax 0,49 FOV [degrees] 81,0 CT3 / CT5 3,19 f / EPD 1,60 (T67+T78) / (CT1 +CT8) 1,18 tan(HFOV) 0,85 BL / T12 0,49 EPD / ImgH 0,72 T45 / T56 0,07 f / lmgH 1,15 (T23+T34+T45) / T12 0,07 SL / TL 0,60 V3 / V4 1,12 BL / SD 0,21 V7 / V3 0,45 f / f2 -0,02 tan(CRA) 0,66 f8 / f1 0,08 ET8 / ET1 2,24 f3 / f4 0,89 SAG2R1 / CT2 -1,23 R3 / f -0,75 SAG3R2 / CT3 -0,20 f / R13 -0,42 SAG7R1 / CT7 -0,77 R4 / R5 -1,02 SAG8R1 / CT8 -0,67 R16 / R9 -0,01 Y8R2 / Y7R1 1,80 <4. Design>

[0158] Fig.Figure 7 is a schematic view of an imaging device 4 according to the 4th embodiment of the present disclosure. Fig. Figure 8 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the imaging device 4 according to the 4th embodiment. Fig.7 The imaging device 4 comprises an image-capturing optical lens arrangement (reference numerals omitted) and an image sensor IS. The image-capturing optical lens arrangement comprises, in an order from an object side to an image side along a beam path, a first lens element E1, a second lens element E2, an aperture diaphragm ST, a third lens element E3, a fourth lens element E4, a fifth lens element E5, an aperture S1, a sixth lens element E6, a seventh lens element E7, an eighth lens element E8, a filter E9 and an image surface IMG, wherein the image sensor IS is arranged on the image surface IMG of the image-capturing optical lens arrangement.The image-capturing optical lens arrangement comprises eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8) without any additional one or more lens elements inserted between the first lens element E1 and the eighth lens element E8, and there is an air gap along an optical axis between all two adjacent lens elements of the eight lens elements.

[0159] The first lens element E1 with negative refractive power has an object-side surface that is concave in a paraxial region, and an image-side surface that is also concave in a paraxial region. The first lens element E1 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the first lens element E1 includes two inflection points and one critical point, and the image-side surface of the first lens element E1 includes one inflection point.

[0160] The second lens element E2, with negative refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The second lens element E2 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the second lens element E2 includes an inflection point, and the image-side surface of the second lens element E2 also includes an inflection point.

[0161] The third lens element E3, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is concave in a paraxial region. The third lens element E3 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the image-side surface of the third lens element E3 includes two inflection points.

[0162] The fourth lens element E4, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is also convex in a paraxial region. The fourth lens element E4 is made of a glass material, and both the object-side and image-side surfaces are spherical.

[0163] The fifth lens element E5, with negative refractive power, has an object-side surface that is concave in a paraxial region, and an image-side surface that is also concave in a paraxial region. The fifth lens element E5 is made of a plastic material, and both the object-side and image-side surfaces are aspherical.

[0164] The sixth lens element E6, with positive refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The sixth lens element E6 is made of a plastic material, and both the object-side and image-side surfaces are aspheric. Furthermore, the image-side surface of the sixth lens element E6 includes an inflection point.

[0165] The seventh lens element E7, with positive refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The seventh lens element E7 is made of a plastic material, and both the object-side and image-side surfaces are aspheric. Furthermore, the object-side surface of the seventh lens element E7 includes an inflection point, and the image-side surface of the seventh lens element E7 also includes an inflection point.

[0166] The eighth lens element E8, with negative refractive power, has an object-side surface that is concave in a paraxial region, and an image-side surface that is also concave in a paraxial region. The eighth lens element E8 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the eighth lens element E8 includes an inflection point and a critical point, and the image-side surface of the eighth lens element E8 includes three inflection points and a critical point.

[0167] The E9 filter consists of a glass material arranged in sequence between the eighth lens element E8 and the image surface IMG, and it does not affect the focal length of the image-capturing optical lens arrangement.

[0168] The detailed optical data of the 4th embodiment are shown in Table 4A and the aspherical surface data are shown in Table 4B below. Table 4A - 4. Design f = 6.79 mm, Fno = 1.64, HFOV = 45.9 degrees Surface No. radius of curvature thickness material index Abbe number Focal length 0 object Infinite Infinite 1 Lens 1 -100,0000 ASP 1,015 plastic 1,545 56,1 -78,53 2 75,0781 ASP 2,355 3 Lens 2 -3,6187 ASP 1,259 plastic 1,544 56,0 -297,53 4 -4,1552 ASP 0,618 5 Ape.blende Flat -0,568 6 Lens 3 4,5881 ASP 1,180 plastic 1,544 56,0 11,82 7 14,5560 ASP 0,100 8 Lens 4 11,1150 (SPH) 1,380 Glass 1,589 61,3 11,24 9 -15,6297 (SPH) 0,100 10 Lens 5 -78,5760 ASP 0,800 plastic 1,660 20,4 -15,87 11 12,1294 ASP 0,839 12 Aperture Flat 0,525 13 Lens 6 -15,6007 ASP 1,697 plastic 1,544 56,0 9,75 14 -4,1099 ASP 0,706 15 Lens 7 -7,1455 ASP 0,899 plastic 1,615 25,4 14,36 16 -4,1375 ASP 0,545 17 Lens 8 -13,3937 ASP 0,813 plastic 1,639 23,5 -4,50 18 3,7460 ASP 0,800 19 filter Flat 0,210 Glass 1,517 64,2 - 20 Flat 0,311 21 Picture Flat - The reference wavelength is 587.6 nm (d-line). The effective radius of surface 12 (aperture S1) is 2.974 mm. Table 4B - Aspheric coefficients Surface No. 1 2 3 4 6 7 k= -7,21281 E+01 7,84011E+01 -5,67907E+00 -5,53054E+00 -1,15270E+00 -7,91393E+01 A4 = 4,613368E-03 6,243401 E-03 -4,685955E-03 -3,946562E-03 -3,943255E-03 -4,364942E-03 A6 = -2,193823E-04 -1,912081 E-04 3,206312E-04 5,343392E-04 7,015657E-04 2,484681 E-04 A8 = 1,676670E-05 6,973259E-06 3,204040E-06 -2,744813E-05 -4,977372E-05 5,438757E-05 A10 = -1,206079E-06 5,678183E-07 -9,606579E-07 1,255998E-06 2,480421 E-06 -9,252102E-06 A12 = 6,619358E-08 -5,586843E-08 2,541922E-08 -2,836778E-08 9,789764E-08 6,763324E-07 A14 = -2,285459E-09 A16 = 3,260557E-11 Surface No. 10 11 13 14 15 16 k = -9,00000E+01 5,07429E+00 4,44108E+00 2,59641 E-01 -2,14299E+01 -1,42826E+01 A4 = -1,701294E-03 1,037140E-03 -1,850910 E-03 6,936995E-03 9,381561 E-03 6,428622E-03 A6 = 2,846196E-04 -4,058729E-04 2,860975E-04 -1,143006E-03 -2,672346E-03 -1,648027E-03 A8 = -3,539681 E-05 3,175703E-04 -2,788272E-04 2,917772E-05 1,369522E-04 -3,937022E-05 A10 = 1,340943E-05 -9,080295E-05 8,305922E-05 2,122615E-05 5,075872E-06 3,346193E-05 A12 = -2,339443E-06 1,543669E-05 -1,352947E-05 -3,492068E-06 -9,565262E-07 -3,415874E-06 A14 = 1,134752E-07 -1,445511 E-06 1,223522E-06 2,338305E-07 2,305416E-08 1,626395E-07 A16 = 5,413248E-08 -4,558308E-08 -4,823707E-09 7,782328E-10 -3,879492E-09 A18 = 3,760216E-11 Surface No. 17 18 k= 2,63825E+00 -1,10138E+01 A4 = -4,830789E-03 -6,999828E-03 A6 = -2,451915E-03 8,233353E-05 A8 = 5,885130E-04 5,450209E-05 A10 = -5,695801 E-05 -6,160316E-06 A12 = 3,152424E-06 3,212997E-07 A14 = -1,080394E-07 -9,183875E-09 A16 = 2,279595E-09 1,441965E-10 A18 = -2,725114E-11 -1,114637E-12 A20 = 1,416418E-13 2,915600E-15

[0169] In the fourth embodiment, the equation for the aspherical surface profiles of the aforementioned lens elements is the same as the equation for the first embodiment. Likewise, the definitions of these parameters, which are given in the following table, are the same as in the first embodiment, with corresponding values ​​for the fourth embodiment; therefore, no further explanation is required in this regard.

[0170] Furthermore, these parameters from Table 4A and Table 4B can be calculated as the following values ​​and they satisfy the following conditions in Table 4C: Table 4C - 4. Design f [mm] 6,79 (R3+R7) / (R3-R7) -0,51 Fno 1,64 (|R3|+|R4|+R16) / f 1,70 HFOV [Grade] 45,9 CTmax / ATmax 0,72 FOV [degrees] 91,8 CT3 / CT5 1,48 f / EPD 1,64 (T67+T78) / (CT1 +CT8) 0,68 tan(HFOV) 1,03 BL / T12 0,56 EPD / lmgH 0,59 T45 / T56 0,07 f / lmgH 0,96 (T23+T34+T45) / T12 0,11 SL / TL 0,66 V3 / V4 0,91 BL / SD 0,15 V7 / V3 0,45 f / f2 -0,02 tan(CRA) 0,67 f8 / f1 0,06 ET8 / ET1 1,29 f3 / f4 1,05 SAG2R1 / CT2 -1,03 R3 / f -0,53 SAG3R2 / CT3 0,07 f / R13 -0,95 SAG7R1 / CT7 -1,77 R4 / R5 -0,91 SAG8R1 / CT8 -1,37 R16 / R9 -0,05 Y8R2 / Y7R1 1,68 <5. Design>

[0171] Fig.Figure 9 is a schematic view of an imaging device 5 according to the 5th embodiment of the present disclosure. Fig. Figure 10 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the imaging device 5 according to the 5th embodiment. Fig.9 The imaging device 5 comprises an image-capturing optical lens arrangement (reference numeral omitted) and an image sensor IS. The image-capturing optical lens arrangement comprises, in an order from an object side to an image side along a beam path, a first lens element E1, a second lens element E2, an aperture diaphragm ST, a third lens element E3, a fourth lens element E4, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, an eighth lens element E8, a filter E9 and an image surface IMG, wherein the image sensor IS is arranged on the image surface IMG of the image-capturing optical lens arrangement.The image-capturing optical lens arrangement comprises eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8) without any additional one or more lens elements inserted between the first lens element E1 and the eighth lens element E8, and there is an air gap along an optical axis between all two adjacent lens elements of the eight lens elements.

[0172] The first lens element E1, with negative refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is also concave in a paraxial region. The first lens element E1 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the first lens element E1 includes three inflection points and a critical point.

[0173] The second lens element E2, with negative refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The second lens element E2 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the image-side surface of the second lens element E2 includes an inflection point.

[0174] The third lens element E3, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is also convex in a paraxial region. The third lens element E3 is made of a plastic material, and both the object-side and image-side surfaces are aspherical.

[0175] The fourth lens element E4, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is concave in a paraxial region. The fourth lens element E4 is made of a plastic material, and both the object-side and image-side surfaces are spherical.

[0176] The fifth lens element E5, with negative refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is concave in a paraxial region. The fifth lens element E5 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the fifth lens element E5 includes an inflection point.

[0177] The sixth lens element E6, with negative refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is concave in a paraxial region. The sixth lens element E6 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the sixth lens element E6 includes two inflection points and a critical point, and the image-side surface of the sixth lens element E6 also includes two inflection points and a critical point.

[0178] The seventh lens element E7, with positive refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The seventh lens element E7 is made of a plastic material, and both the object-side and image-side surfaces are aspheric. Furthermore, the object-side surface of the seventh lens element E7 comprises three inflection points, and the image-side surface of the seventh lens element E7 also comprises three inflection points.

[0179] The eighth lens element E8, with negative refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is concave in a paraxial region. The eighth lens element E8 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the eighth lens element E8 includes three inflection points and three critical points, while the image-side surface of the eighth lens element E8 includes one inflection point and one critical point.

[0180] The E9 filter consists of a glass material arranged in sequence between the eighth lens element E8 and the image surface IMG, and it does not affect the focal length of the image-capturing optical lens arrangement.

[0181] The detailed optical data of the 5th embodiment are shown in Table 5A and the aspherical surface data are shown in Table 5B below. Table 5A - 5. Design f = 6.64 mm, Fno = 1.63, HFOV = 45.6 degrees Surface No. radius of curvature thickness material index Abbe number Focal length 0 object Infinite Infinite 1 Lens 1 -68,8078 ASP 0,627 plastic 1,511 56,8 -48,35 2 38,6517 ASP 3,176 3 Lens 2 -4,0051 ASP 1,288 plastic 1,551 44,8 -93,68 4 -4,8381 ASP 0,594 5 Ape.blende Flat -0,544 6 Lens 3 5,0218 ASP 1,485 plastic 1,544 56,0 7,77 7 -23,8888 ASP 0,050 8 Lens 4 8,4325 SPH 1,175 plastic 1,544 56,0 16,42 9 142,8571 SPH 0,043 10 Lens 5 35,8433 ASP 0,686 plastic 1,680 18,2 -11,37 11 6,3095 ASP 1,442 12 Lens 6 322,5806 ASP 0,949 plastic 1,511 56,8 -184,90 13 72,9915 ASP 0,654 14 Lens 7 -1486,0541 ASP 1,045 plastic 1,562 44,6 6,26 15 -3,5121 ASP 0,837 16 Lens 8 488,6483 ASP 0,743 plastic 1,587 28,3 -5,48 17 3,1956 ASP 0,650 18 filter Flat 0,180 Glass 1,517 64,2 - 19 Flat 0,652 20 Picture Flat - The reference wavelength is 587.6 nm (d-line). Table 5B - Aspheric coefficients Surface No. 1 2 3 4 6 7 k= -9,00000E+01 -7,25460E+01 -5,80434E+00 -7,39441E+00 -1,15560E+00 4,17138E+01 A4 = 5,676941 E-03 6,991340E-03 -4,742072E-03 -4,307962E-03 -2,240526E-03 -5,193743E-03 A6 = -4,042628E-04 -4,101576E-04 4,296259E-04 7,456065E-04 4,081203E-04 8,966743E-04 A8 = 3,161296E-05 3,170383E-05 -3,132051 E-05 -8,730484E-05 -4,980726E-05 -1,032629E-04 A10 = -2,408193E-06 -2,298613E-06 2,869778E-06 9,341737E-06 4,978733E-06 8,917227E-06 A12 = 1,260473E-07 6,558154E-08 -1,819212E-07 -6,014086E-07 -2,609906E-07 -3,982192E-07 A14 = -4,397699E-09 -2,207675E-10 4,678302E-09 1,601825E-08 A16 = 9,688960E-11 A18 = -9,856213E-13 Surface No. 10 11 12 13 14 15 k = 8,73816E+01 1,43018E+00 -9,00000E+01 -9,00000E+01 9,00000E+01 -9,85649E+00 A4 = -3,827127E-03 -1,995857E-03 -6,631285E-03 -8,626555E-03 9,873009E-04 -7,230343E-03 A6 = 1,524369E-03 1,188726E-03 -6,813478E-05 -8,967082E-04 -1,711198E-03 2,970082E-03 A8 = -2,870220E-04 -2,146859E-04 3,076804E-04 4,337355E-04 5,002221 E-04 -7,089780E-04 A10 = 3,450926E-05 2,143388E-05 -1,462028E-04 -1,317775E-04 -1,266872E-04 1,298611E-04 A12 = -2,678884E-06 -2,791374E-07 3,908118E-05 2,403582E-05 2,167749E-05 -1,679039E-05 A14 = 9,047667E-08 -1,525739E-07 -6,439131 E-06 -2,546813E-06 -2,556934E-06 1,417566E-06 A16 = 9,488555E-09 6,443787E-07 1,455891 E-07 1,972178E-07 -7,597330E-08 A18 = -3,482813E-08 -3,349695E-09 -9,084038E-09 2,507973E-09 A20 = 7,651531 E-10 1,927245E-10 -4,700391E-11 A22 = 3,878215E-13 Surface No. 16 17 k= 9,00000E+01 -7,45581 E+00 A4 = -1,304952E-02 -9,760038E-03 A6 = 1,719283E-03 1,407687E-03 A8 = -1,936747E-04 -1,735097E-04 A10 = 2,225375E-05 1,617041 E-05 A12 = -1,919542E-06 -1,079046E-06 A14 = 1,090383E-07 4,989360E-08 A16 = -3,967110E-09 -1,545497E-09 A18 = 8,948088E-11 3,040269E-11 A20 = -1,144084E-12 -3,415445E-13 A22 = 6,354676E-15 1,660927E-15

[0182] In the 5th embodiment, the equation for the aspherical surface profiles of the aforementioned lens elements is the same as the equation for the 1st embodiment. Likewise, the definitions of these parameters, which are given in the following table, are the same as in the 1st embodiment, with corresponding values ​​for the 5th embodiment; therefore, no further explanation is required in this regard.

[0183] Furthermore, these parameters from Table 5A and Table 5B can be calculated as the following values ​​and they satisfy the following conditions in Table 5C: Table 5C - 5. Design f [mm] 6,64 (R3+R7) / (R3-R7) -0,36 Fno 1,63 (|R3|+|R4|+R16) / f 1,81 HFOV [Grade] 45,6 CTmax / ATmax 0,47 FOV [degrees] 91,2 CT3 / CT5 2,16 f / EPD 1,63 (T67+T78) / (CT1 +CT8) 1,09 tan(HFOV) 1,02 BL / T12 0,47 EPD / lmgH 0,59 T45 / T56 0,03 f / lmgH 0,97 (T23+T34+T45) / T12 0,05 SL / TL 0,64 V3 / V4 1,00 BL / SD 0,17 V7 / V3 0,80 f / f2 -0,07 tan(CRA) 0,64 f8 / f1 0,11 ET8 / ET1 1,27 f3 / f4 0,47 SAG2R1 / CT2 -0,87 R3 / f -0,60 SAG3R2 / CT3 -0,19 f / R13 -0,004 SAG7R1 / CT7 -0,89 R4 / R5 -0,96 SAG8R1 / CT8 -0,87 R16 / R9 0,09 Y8R2 / Y7R1 1,80 <6. Design>

[0184] Fig.Figure 11 is a schematic view of an imaging device 6 according to the 6th embodiment of the present disclosure. Fig. Figure 12 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the imaging device 6 according to the 6th embodiment. Fig.11 The imaging device 6 comprises an image-capturing optical lens arrangement (reference numerals omitted) and an image sensor IS. The image-capturing optical lens arrangement comprises, in an order from an object side to an image side along a beam path, a first lens element E1, a second lens element E2, an aperture diaphragm ST, a third lens element E3, a fourth lens element E4, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, an eighth lens element E8, a filter E9 and an image surface IMG, wherein the image sensor IS is arranged on the image surface IMG of the image-capturing optical lens arrangement.The image-capturing optical lens arrangement comprises eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8) without any additional one or more lens elements inserted between the first lens element E1 and the eighth lens element E8, and there is an air gap along an optical axis between all two adjacent lens elements of the eight lens elements.

[0185] The first lens element E1, with positive refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The first lens element E1 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the first lens element E1 includes an inflection point and a critical point, and the image-side surface of the first lens element E1 also includes an inflection point and a critical point.

[0186] The second lens element E2, with negative refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The second lens element E2 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the second lens element E2 includes an inflection point, and the image-side surface of the second lens element E2 also includes an inflection point.

[0187] The third lens element E3, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is concave in a paraxial region. The third lens element E3 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the image-side surface of the third lens element E3 includes an inflection point.

[0188] The fourth lens element E4, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is also convex in a paraxial region. The fourth lens element E4 is made of a glass material, and both the object-side and image-side surfaces are spherical.

[0189] The fifth lens element E5, with negative refractive power, has an object-side surface that is concave in a paraxial region, and an image-side surface that is also concave in a paraxial region. The fifth lens element E5 is made of a plastic material, and both the object-side and image-side surfaces are aspherical.

[0190] The sixth lens element E6, with positive refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The sixth lens element E6 is made of a plastic material, and both the object-side and image-side surfaces are aspheric. Furthermore, the object-side surface of the sixth lens element E6 includes two inflection points, and the image-side surface of the sixth lens element E6 includes one inflection point.

[0191] The seventh lens element E7, with positive refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The seventh lens element E7 is made of a plastic material, and both the object-side and image-side surfaces are aspheric. Furthermore, the object-side surface of the seventh lens element E7 includes one inflection point, and the image-side surface of the seventh lens element E7 includes two inflection points.

[0192] The eighth lens element E8, with negative refractive power, has an object-side surface that is concave in a paraxial region, and an image-side surface that is also concave in a paraxial region. The eighth lens element E8 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the eighth lens element E8 includes an inflection point and a critical point, and the image-side surface of the eighth lens element E8 includes three inflection points and a critical point.

[0193] The E9 filter consists of a glass material arranged in sequence between the eighth lens element E8 and the image surface IMG, and it does not affect the focal length of the image-capturing optical lens arrangement.

[0194] The detailed optical data of the 6th embodiment are shown in Table 6A and the aspherical surface data are shown in Table 6B below. Table 6A - 6. Design f = 7.82 mm, Fno = 1.68, HFOV = 40.0 degrees Surface No. radius of curvature thickness material index Abbe number Focal length 0 object Infinite Infinite 1 Lens 1 -40,1742 ASP 0,837 plastic 1,551 44,8 217,70 2 -30,3141 ASP 2,005 3 Lens 2 -3,7367 ASP 1,006 plastic 1,511 56,8 -190,10 4 -4,2400 ASP 0,561 5 Ape.blende Flat -0,488 6 Lens 3 4,8068 ASP 1,198 plastic 1,544 56,0 12,09 7 16,2768 ASP 0,075 8 Lens 4 13,8256 SPH 1,544 Glass 1,569 63,0 10,21 9 -9,6159 SPH 0,080 10 Lens 5 -19,8010 ASP 1,150 plastic 1,639 23,5 -11,33 11 11,6668 ASP 1,148 12 Lens 6 -21,6075 ASP 1,859 plastic 1,511 56,8 9,40 13 -4,0416 ASP 0,462 14 Lens 7 -7,3449 ASP 1,207 plastic 1,529 45,4 19,19 15 -4,5046 ASP 0,341 16 Lens 8 -14,1163 ASP 0,844 plastic 1,551 44,8 -4,71 17 3,2421 ASP 0,800 18 filter Flat 0,210 Glass 1,517 64,2 - 19 Flat 0,390 20 Picture Flat - The reference wavelength is 587.6 nm (d-line). Table 6B - Aspheric coefficients Surface No. 1 2 3 4 6 7 k = 1,31916E+01 4,08979E+01 -6,69057E+00 -5,59628E+00 -1,50655E+00 -6,22065E+01 A4 = 3,982954E-03 5,769991 E-03 -3,376090E-03 -3,812641 E-03 -5,125849E-03 -3,896201 E-03 A6 = -1,957719E-04 -2,406999E-04 -4,258746E-05 5,167464E-04 1,190954E-03 5,809071 E-04 A8 = 2,824044E-05 2,511662E-05 5,754574E-05 -4,867071 E-05 -1,426299E-04 -5,974632E-05 A10 = -4,013953E-06 -1,991453E-06 -5,426010 E-06 7,199514E-06 1,102628E-05 4,225712E-06 A12 = 3,983045E-07 9,904446E-08 2,312607E-07 -6,142220E-07 -3,939878E-07 -1,624022E-07 A14 = -2,439473E-08 -2,205791 E-09 -3,692736E-09 2,194796E-08 A16 = 8,281331E-10 A18 = -1,190396E-11 Surface No. 10 11 12 13 14 15 k = -7,79605E+01 6,86239E+00 -3,18073E+01 1,26291 E-01 -2,58622E+01 -2,38584E+01 A4 = -1,990662E-04 3,034783E-03 -1,316639E-03 1,152322E-02 1,117820E-02 9,406023E-04 A6 = 1,782963E-04 -4,827208E-04 -5,745056E-04 -5,397936E-03 -6,536436E-03 1,824426E-04 A8 = -8,765557E-05 1,964481E-04 3,117974E-04 1,939651 E-03 2,122096E-03 -1,046425E-04 A10 = 1,632151 E-05 -5,589968E-05 -1,106642E-04 -4,559797E-04 -4,581563E-04 1,074286E-05 A12 = -1,838933E-06 8,853771 E-06 2,372080E-05 6,691197E-05 6,013776E-05 -4,122840E-07 A14 = 8,050187E-08 -7,282461 E-07 -3,000066E-06 -5,874911 E-06 -4,723659E-06 -3,246560E-09 A16 = 2,376347E-08 2,113957E-07 2,825814E-07 2,008629E-07 8,899117E-10 A18 = -6,367410 E-09 -5,657371 E-09 -3,477310E-09 -3,092201 E-11 A20 = 3,638302E-13 Surface No. 16 17 k = 1,80811 E+00 -9,57818E+00 A4 = -1,505303E-02 -8,788509E-03 A6 = 2,578173E-03 1,455405E-03 A8 = -5,721836E-04 -2,334192E-04 A10 = 9,826899E-05 2,654499E-05 A12 = -9,864578E-06 -1,990574E-06 A14 = 5,993526E-07 9,778482E-08 A16 = -2,266636E-08 -3,113069E-09 A18 = 5,246955E-10 6,184616E-11 A20 = -6,830875E-12 -6,965735E-13 A22 = 3,841566E-14 3,394468E-15

[0195] In the 6th embodiment, the equation for the aspherical surface profiles of the aforementioned lens elements is the same as the equation for the 1st embodiment. Likewise, the definitions of these parameters, which are given in the following table, are the same as in the 1st embodiment, with corresponding values ​​for the 6th embodiment; therefore, no further explanation is required in this regard.

[0196] Furthermore, these parameters from Table 6A and Table 6B can be calculated as the following values ​​and they satisfy the following conditions in Table 6C: Table 6C - 6. Design f [mm] 7,82 (R3+R7) / (R3-R7) -0,57 Fno 1,68 (|R3|+|R4|+R16) / f 1,44 HFOV [Grade] 40,0 CTmax / ATmax 0,93 FOV [degrees] 80,0 CT3 / CT5 1,04 f / EPD 1,68 (T67+T78) / (CT1 +CT8) 0,48 tan(HFOV) 0,84 BL / T12 0,70 EPD / lmgH 0,69 T45 / T56 0,07 f / lmgH 1,17 (T23+T34+T45) / T12 0,11 SL / TL 0,71 V3 / V4 0,89 BL / SD 0,15 V7 / V3 0,81 f / f2 -0,04 tan(CRA) 0,63 f8 / f1 -0,02 ET8 / ET1 2,12 f3 / f4 1,18 SAG2R1 / CT2 -1,13 R3 / f -0,48 SAG3R2 / CT3 0,07 f / R13 -1,06 SAG7R1 / CT7 -1,31 R4 / R5 -0,88 SAG8R1 / CT8 -1,16 R16 / R9 -0,16 Y8R2 / Y7R1 1,70 <7. Design>

[0197] Fig.Figure 13 is a schematic view of an imaging device 7 according to the 7th embodiment of the present disclosure. Fig. Figure 14 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the imaging device 7 according to the 7th embodiment. Fig.13 The imaging device 7 comprises an image-capturing optical lens arrangement (reference numerals omitted) and an image sensor IS. The image-capturing optical lens arrangement comprises, in an order from an object side to an image side along a beam path, a first lens element E1, a second lens element E2, an aperture diaphragm ST, a third lens element E3, a fourth lens element E4, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, an eighth lens element E8, a filter E9 and an image surface IMG, wherein the image sensor IS is arranged on the image surface IMG of the image-capturing optical lens arrangement.The image-capturing optical lens arrangement comprises eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8) without any additional one or more lens elements inserted between the first lens element E1 and the eighth lens element E8, and there is an air gap along an optical axis between all two adjacent lens elements of the eight lens elements.

[0198] The first lens element E1, with negative refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is concave in a paraxial region. The first lens element E1 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the image-side surface of the first lens element E1 includes an inflection point.

[0199] The second lens element E2, with negative refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The second lens element E2 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the second lens element E2 includes an inflection point, and the image-side surface of the second lens element E2 also includes an inflection point.

[0200] The third lens element E3, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is also convex in a paraxial region. The third lens element E3 is made of a plastic material, and both the object-side and image-side surfaces are aspherical.

[0201] The fourth lens element E4, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is also convex in a paraxial region. The fourth lens element E4 is made of a plastic material, and both the object-side and image-side surfaces are spherical.

[0202] The fifth lens element E5, with negative refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is concave in a paraxial region. The fifth lens element E5 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the fifth lens element E5 includes three reflection points and a critical point.

[0203] The sixth lens element E6, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is also convex in a paraxial region. The sixth lens element E6 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the sixth lens element E6 includes two inflection points and two critical points, and the image-side surface of the sixth lens element E6 includes one inflection point and one critical point.

[0204] The seventh lens element E7, with positive refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The seventh lens element E7 is made of a plastic material, and both the object-side and image-side surfaces are aspheric. Furthermore, the object-side surface of the seventh lens element E7 includes an inflection point, and the image-side surface of the seventh lens element E7 also includes an inflection point.

[0205] The eighth lens element E8, with negative refractive power, has an object-side surface that is concave in a paraxial region, and an image-side surface that is also concave in a paraxial region. The eighth lens element E8 is made of a plastic material, and both the object-side and image-side surfaces are aspheric. Furthermore, the object-side surface of the eighth lens element E8 includes two inflection points, and the image-side surface of the eighth lens element E8 includes one inflection point and one critical point.

[0206] The E9 filter consists of a glass material arranged in sequence between the eighth lens element E8 and the image surface IMG, and it does not affect the focal length of the image-capturing optical lens arrangement.

[0207] The detailed optical data of the 7th embodiment are shown in Table 7A and the aspherical surface data are shown in Table 7B below. Table 7A - 7. Design f = 7.27 mm, Fno = 1.65, HFOV = 42.9 degrees Surface No. radius of curvature thickness material index Abbe number Focal length 0 object Infinite Infinite 1 Lens 1 45,0601 ASP 0,551 plastic 1,545 56,1 -34,59 2 13,2328 ASP 2,699 3 Lens 2 -5,0000 ASP 1,197 plastic 1,551 44,8 -173,21 4 -5,7252 ASP 0,585 5 Ape.blende Flat -0,546 6 Lens 3 5,5928 ASP 1,514 plastic 1,544 56,0 8,94 7 -33,7262 ASP 0,047 8 Lens 4 7,4935 SPH 1,351 plastic 1,544 56,0 11,57 9 -36,9086 SPH 0,050 10 Lens 5 123,5820 ASP 0,593 plastic 1,639 23,5 -9,79 11 5,9419 ASP 1,068 12 Lens 6 35,9125 ASP 0,896 plastic 1,551 44,8 23,92 13 -20,6180 ASP 1,514 14 Lens 7 -10,0522 ASP 1,061 plastic 1,584 28,2 5,12 15 -2,3947 ASP 0,228 16 Lens 8 -29,8227 ASP 0,760 plastic 1,584 28,2 -3,81 17 2,4266 ASP 0,980 18 filter Flat 0,230 Glass 1,517 64,2 - 19 Flat 0,768 20 Picture Flat - The reference wavelength is 587.6 nm (d-line). Table 7B - Aspheric coefficients Surface No. 1 2 3 4 6 7 k = 2,47316E+01 3,14455E-01 -6,95432E+00 -6,05576E+00 -1,21279E+00 5,48455E+01 A4 = 6,135518E-03 7,698450E-03 -4,021975E-03 -3,481643E-03 -2,102936E-03 -2,925608E-03 A6 = -4,930032E-04 -4,241941 E-04 1,587218E-05 2,426435E-04 3,067225E-04 1,049892E-04 A8 = 3,890880E-05 1,827015E-05 2,389518E-05 5,099913E-06 -2,242741 E-05 1,097339E-05 A10 = -3,560039E-06 -6,274051 E-07 -1,284316E-06 -6,836976E-07 8,999653E-07 -1,636978E-06 A12 = 2,724928E-07 -3,680233E-11 2,216175E-08 4,032898E-08 -1,993749E-08 5,921118E-08 A14 = -1,398262E-08 A16 = 4,128973E-10 A18 = -5,212174E-12 Surface No. 10 11 12 13 14 15 k = 6,99891 E+01 9,04141 E-01 -7,80610 E+01 2,34717E+01 5,97885E+00 -7,38763E+00 A4 = -4,000572E-03 -3,479316E-03 -2,922459E-03 -3,086565E-03 -4,110353E-03 -1,070695E-02 A6 = 1,105134E-03 1,169141 E-03 1,449972E-04 1,364211 E-04 8,440583E-04 3,883538E-03 A8 = -1,409133E-04 -1,691365E-04 -1,981143E-04 -1,852117E-04 -3,905277E-04 -9,669568E-04 A10 = 9,820664E-06 2,278249E-05 9,521588E-05 6,008029E-05 6,357351 E-05 1,386216E-04 A12 = -4,694097E-07 -2,778803E-06 -2,529665E-05 -1,118280E-05 -5,135737E-06 -8,464579E-06 A14 = 1,240666E-08 2,354060E-07 4,321707E-06 1,327084E-06 2,219232E-07 -3,115022E-07 A16 = -9,171550E-09 -4,562089E-07 -9,106258E-08 -1,453036E-08 8,520542E-08 A18 = 2,754881 E-08 2,867137E-09 8,351946E-10 -5,616187E-09 A20 = -7,262171 E-10 1,681757E-10 A22 = -1,969366E-12 Surface No. 16 17 k = -8,94578E+01 -8,64785E+00 A4 = -7,151964E-03 -7,171343E-03 A6 = 6,548552E-04 7,769056E-04 A8 = 2,786657E-06 -5,519017E-05 A10 = -3,967679E-06 1,570272E-06 A12 = 3,261716E-07 9,941979E-08 A14 = -2,180229E-08 -1,287391 E-08 A16 = 1,454123E-09 6,346070E-10 A18 = -6,720683E-11 -1,705296E-11 A20 = 1,682595E-12 2,465916E-13 A22 = -1,727746E-14 -1,512456E-15

[0208] In the 7th embodiment, the equation for the aspherical surface profiles of the aforementioned lens elements is the same as the equation for the 1st embodiment. Likewise, the definitions of these parameters, which are given in the following table, are the same as in the 1st embodiment, with corresponding values ​​for the 7th embodiment; therefore, no further explanation is required in this regard.

[0209] Furthermore, these parameters from Table 7A and Table 7B can be calculated as the following values ​​and they satisfy the following conditions in Table 7C: Table 7C - 7. Design f [mm] 7,27 (R3+R7) / (R3-R7) -0,20 Fno 1,65 (|R3|+|R4|+R16) / f 1,81 HFOV [Grade] 42,9 CTmax / ATmax 0,56 FOV [degrees] 85,8 CT3 / CT5 2,55 f / EPD 1,65 (T67+T78) / (CT1 +CT8) 1,33 tan(HFOV) 0,93 BL / T12 0,73 EPD / ImgH 0,64 T45 / T56 0,05 f / lmgH 1,05 (T23+T34+T45) / T12 0,05 SL / TL 0,68 V3 / V4 1,00 BL / SD 0,23 V7 / V3 0,50 f / f2 -0,04 tan(CRA) 0,72 f8 / f1 0,11 ET8 / ET1 1,59 f3 / f4 0,77 SAG2R1 / CT2 -0,97 R3 / f -0,69 SAG3R2 / CT3 -0,19 f / R13 -0,72 SAG7R1 / CT7 -1,39 R4 / R5 -1,02 SAG8R1 / CT8 -1,00 R16 / R9 0,02 Y8R2 / Y7R1 1,78 <8. Design>

[0210] Fig.Figure 15 is a schematic view of an imaging device 8 according to the 8th embodiment of the present disclosure. Fig. Figure 16 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the imaging device 8 according to the 8th embodiment. Fig.15 The imaging device 8 comprises an image-capturing optical lens arrangement (reference numerals omitted) and an image sensor IS. The image-capturing optical lens arrangement comprises, in an order from an object side to an image side along a beam path, a first lens element E1, a second lens element E2, an aperture diaphragm ST, a third lens element E3, a fourth lens element E4, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, an eighth lens element E8, a filter E9 and an image surface IMG, wherein the image sensor IS is arranged on the image surface IMG of the image-capturing optical lens arrangement.The image-capturing optical lens arrangement comprises eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8) without any additional one or more lens elements inserted between the first lens element E1 and the eighth lens element E8, and there is an air gap along an optical axis between all two adjacent lens elements of the eight lens elements.

[0211] The first lens element E1 with negative refractive power has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The first lens element E1 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the first lens element E1 includes an inflection point and a critical point, and the image-side surface of the first lens element E1 includes two inflection points and a critical point.

[0212] The second lens element E2, with positive refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The second lens element E2 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the second lens element E2 includes an inflection point, and the image-side surface of the second lens element E2 includes an inflection point and a critical point.

[0213] The third lens element E3, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is concave in a paraxial region. The third lens element E3 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the third lens element E3 includes an inflection point, and the image-side surface of the third lens element E3 includes an inflection point and a critical point.

[0214] The fourth lens element E4, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is also convex in a paraxial region. The fourth lens element E4 is made of a glass material, and both the object-side and image-side surfaces are spherical.

[0215] The fifth lens element E5, with negative refractive power, has an object-side surface that is concave in a paraxial region, and an image-side surface that is also concave in a paraxial region. The fifth lens element E5 is made of a plastic material, and both the object-side and image-side surfaces are aspherical.

[0216] The sixth lens element E6, with positive refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The sixth lens element E6 is made of a plastic material, and both the object-side and image-side surfaces are aspheric. Furthermore, the object-side surface of the sixth lens element E6 includes an inflection point and a critical point, and the image-side surface of the sixth lens element E6 also includes an inflection point and a critical point.

[0217] The seventh lens element E7, with positive refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The seventh lens element E7 is made of a plastic material, and both the object-side and image-side surfaces are aspheric. Furthermore, the object-side surface of the seventh lens element E7 comprises three inflection points, and the image-side surface of the seventh lens element E7 also comprises three inflection points.

[0218] The eighth lens element E8, with negative refractive power, has an object-side surface that is concave in a paraxial region, and an image-side surface that is also concave in a paraxial region. The eighth lens element E8 is made of a plastic material, and both the object-side and image-side surfaces are aspheric. Furthermore, the object-side surface of the eighth lens element E8 includes two inflection points, and the image-side surface of the eighth lens element E8 includes one inflection point and one critical point.

[0219] The E9 filter consists of a glass material arranged in sequence between the eighth lens element E8 and the image surface IMG, and it does not affect the focal length of the image-capturing optical lens arrangement.

[0220] The detailed optical data of the 8th embodiment are shown in Table 8A and the aspherical surface data are shown in Table 8B below. Table 8A - 8. Design f = 3.87 mm, Fno = 1.66, HFOV = 46.9 degrees Surface No. radius of curvature thickness material index Abbe number Focal length 0 object Infinite Infinite 1 Lens 1 -13,4165 ASP 1,158 plastic 1,545 56,1 -37,27 2 -40,7230 ASP 1,176 3 Lens 2 -2,2226 ASP 0,494 plastic 1,544 56,0 206,21 4 -2,3501 ASP 0,260 5 Ape.blende Flat -0,230 6 Lens 3 3,0966 ASP 0,644 plastic 1,544 55,9 8,29 7 9,1726 ASP 0,196 8 Lens 4 9,4251 SPH 1,105 Glass 1,692 54,5 3,82 9 -3,4996 SPH 0,053 10 Lens 5 -8,0295 ASP 0,270 plastic 1,639 23,5 -5,59 11 6,5027 ASP 0,597 12 Lens 6 -10,4855 ASP 0,656 plastic 1,544 56,0 11,83 13 -4,0768 ASP 0,551 14 Lens 7 -7,6346 ASP 0,702 plastic 1,529 45,4 5,87 15 -2,2776 ASP 0,397 16 Lens 8 -7,2521 ASP 0,352 plastic 1,551 44,8 -2,88 17 2,0675 ASP 0,384 18 filter Flat 0,150 Glass 1,517 64,2 - 19 Flat 0,248 20 Picture Flat - The reference wavelength is 587.6 nm (d-line). Table 8B - Aspheric coefficients Surface No. 1 2 3 4 6 7 k= 1,22879E+01 8,72253E+01 -7,33084E+00 -7,09182E+00 -1,58976E+00 -8,16240E+01 A4 = 1,357253E-02 2,292687E-02 -2,837806E-02 -2,926594E-02 -2,787326E-02 -3,263347E-02 A6 = -1,347104E-03 -2,637338E-03 7,319659E-03 2,214998E-02 2,521299E-02 1,772769E-02 A8 = 1,672565E-04 4,561343E-04 1,326620E-03 -9,766341 E-03 -1,340201 E-02 -6,839290E-03 A10 = -1,168517E-05 -1,654448E-05 -9,372649E-04 4,052206E-03 4,616681 E-03 2,339576E-03 A12 = -4,626663E-08 -5,616711 E-06 1,703195E-04 -1,033674E-03 -8,208439E-04 -4,945942E-04 A14 = 1,021116E-07 2,245140E-07 -1,072498E-05 1,140137E-04 A16 = -8,886037E-09 A18 = 2,826914E-10 Surface No. 10 11 12 13 14 15 k= 1,59055E+01 5,84654E+00 -6,05345E+01 1,13436E+00 -5,07845E+01 -1,56856E+01 A4 = -1,744000E-02 -3,999630E-03 4,229222E-03 3,730215E-02 8,393385E-02 7,359607E-02 A6 = 1,622484E-02 1,119072E-02 -2,175269E-02 -6,669599E-02 -1,017192E-01 -6,958978E-02 A8 = -6,695759E-03 -2,639733E-03 2,082042E-02 6,084394E-02 6,275676E-02 2,595624E-02 A10 = 1,860980E-03 -1,669355E-04 -1,257842E-02 -3,914944E-02 -2,848914E-02 -5,099599E-03 A12 = -4,773143E-04 2,605333E-04 4,380089E-03 1,684149E-02 8,833975E-03 4,177790E-04 A14 = 6,071808E-05 -9,484920E-05 -7,248192E-04 -4,611517E-03 -1,794433E-03 3,099371 E-05 A16 = 1,330291E-05 4,311310E-05 7,307849E-04 2,099628E-04 -1,002669E-05 A18 = -4,985516E-05 -1,027884E-05 8,241082E-07 A20 = -2,366484E-08 Surface No. 16 17 k = 2,31377E+00 -4,42658E+00 A4 = 5,247898E-02 -5,055363E-02 A6 = -1,196756E-01 5,573035E-03 A8 = 6,406124E-02 1,351991 E-03 A10 = -1,769775E-02 -5,503147E-04 A12 = 2,981082E-03 8,424823E-05 A14 = -3,188961 E-04 -7,144974E-06 A16 = 2,123299E-05 3,499317E-07 A18 = -8,046847E-07 -9,079012E-09 A20 = 1,328034E-08 9,175775E-11

[0221] In the 8th embodiment, the equation for the aspherical surface profiles of the aforementioned lens elements is the same as the equation for the 1st embodiment. Likewise, the definitions of these parameters, which are given in the following table, are the same as in the 1st embodiment, with corresponding values ​​for the 8th embodiment; therefore, no further explanation is required in this regard.

[0222] Furthermore, these parameters from Table 8A and Table 8B can be calculated as the following values ​​and they satisfy the following conditions in Table 8C: Table 8C - 8. Design f [mm] 3,87 (R3+R7) / (R3-R7) -0,62 Fno 1,66 (|R3|+|R4|+R16) / f 1,72 HFOV [Grade] 46,9 CTmax / ATmax 0,98 FOV [degrees] 93,8 CT3 / CT5 2,39 f / EPD 1,66 (T67+T78) / (CT1 +CT8) 0,63 tan(HFOV) 1,07 BL / T12 0,67 EPD / lmgH 0,55 T45 / T56 0,09 f / lmgH 0,92 (T23+T34+T45) / T12 0,24 SL / TL 0,66 V3 / V4 1,03 BL / SD 0,15 V7 / V3 0,81 f / f2 0,02 tan(CRA) 0,72 f8 / f1 0,08 ET8 / ET1 0,84 f3 / f4 2,17 SAG2R1 / CT2 -1,26 R3 / f -0,57 SAG3R2 / CT3 0,03 f / R13 -0,51 SAG7R1 / CT7 -1,13 R4 / R5 -0,76 SAG8R1 / CT8 -2,58 R16 / R9 -0,26 Y8R2 / Y7R1 1,68 <9. Design>

[0223] Fig.Figure 17 is a schematic view of an imaging device 9 according to the 9th embodiment of the present disclosure. Fig. Figure 18 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the imaging device 9 according to the 9th embodiment. Fig.17 The imaging device 9 comprises an image-capturing optical lens arrangement (reference numerals omitted) and an image sensor IS. The image-capturing optical lens arrangement comprises, in an order from an object side to an image side along a beam path, a first lens element E1, a second lens element E2, an aperture diaphragm ST, a third lens element E3, a fourth lens element E4, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, an eighth lens element E8, a filter E9 and an image surface IMG, wherein the image sensor IS is arranged on the image surface IMG of the image-capturing optical lens arrangement.The image-capturing optical lens arrangement comprises eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8) without any additional one or more lens elements inserted between the first lens element E1 and the eighth lens element E8, and there is an air gap along an optical axis between all two adjacent lens elements of the eight lens elements.

[0224] The first lens element E1, with negative refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is concave in a paraxial region. The first lens element E1 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the first lens element E1 includes an inflection point, and the image-side surface of the first lens element E1 includes an inflection point.

[0225] The second lens element E2, with negative refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The second lens element E2 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the second lens element E2 includes an inflection point, and the image-side surface of the second lens element E2 also includes an inflection point.

[0226] The third lens element E3, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is also convex in a paraxial region. The third lens element E3 is made of a plastic material, and both the object-side and image-side surfaces are aspherical.

[0227] The fourth lens element E4, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is also convex in a paraxial region. The fourth lens element E4 is made of a glass material, and both the object-side and image-side surfaces are spherical.

[0228] The fifth lens element E5, with negative refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is concave in a paraxial region. The fifth lens element E5 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the fifth lens element E5 includes three inflection points and three critical points.

[0229] The sixth lens element E6, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is also convex in a paraxial region. The sixth lens element E6 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the sixth lens element E6 includes two inflection points and two critical points, and the image-side surface of the sixth lens element E6 includes one inflection point and one critical point.

[0230] The seventh lens element E7, with positive refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The seventh lens element E7 is made of a plastic material, and both the object-side and image-side surfaces are aspheric. Furthermore, the object-side surface of the seventh lens element E7 includes an inflection point, and the image-side surface of the seventh lens element E7 also includes an inflection point.

[0231] The eighth lens element E8, with negative refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is concave in a paraxial region. The eighth lens element E8 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the eighth lens element E8 includes five inflection points and one critical point, and the image-side surface of the eighth lens element E8 includes one inflection point and one critical point.

[0232] The E9 filter consists of a glass material arranged in sequence between the eighth lens element E8 and the image surface IMG, and it does not affect the focal length of the image-capturing optical lens arrangement.

[0233] The detailed optical data of the 9th embodiment are shown in Table 9A and the aspherical surface data are shown in Table 9B below. Table 9A - 9. Design f = 6.76 mm, Fno = 1.64, HFOV = 45.8 degrees Surface No. radius of curvature thickness material index Abbe number Focal length 0 object Infinite Infinite 1 Lens 1 58,5475 ASP 0,700 plastic 1,545 56,1 -25,92 2 11,3317 ASP 2,617 3 Lens 2 -3,7451 ASP 1,015 plastic 1,544 56,0 -122,22 4 -4,3476 ASP 0,625 5 Ape.blende Flat -0,575 6 Lens 3 5,2164 ASP 1,475 plastic 1,544 56,0 8,48 7 -35,8792 ASP 0,079 8 Lens 4 10,0000 (SPH) 1,326 Glass 1,620 60,4 11,61 9 -24,4106 (SPH) 0,060 10 Lens 5 119,3312 ASP 0,700 plastic 1,660 20,4 -10,36 11 6,4506 ASP 0,907 12 Lens 6 108,6916 ASP 0,992 plastic 1,544 56,0 31,01 13 -19,9032 ASP 1,563 14 Lens 7 -11,4272 ASP 1,103 plastic 1,566 37,4 5,12 15 -2,3932 ASP 0,327 16 Lens 8 62,2713 ASP 0,750 plastic 1,615 25,4 -4,11 17 2,4188 ASP 1,000 18 filter Flat 0,210 Glass 1,517 64,2 - 19 Flat 0,709 20 Picture Flat - The reference wavelength is 587.6 nm (d-line). Table 9B - Aspheric coefficients Surface No. 1 2 3 4 6 7 k = -9,00000E+01 6,93368E-01 -5,64342E+00 -5,67640E+00 -1,09374E+00 5,97352E+01 A4 = 6,004573E-03 7,778361 E-03 -6,185792E-03 -4,506309E-03 -2,597945E-03 -5,151586E-03 A6 = -5,096583E-04 -4,765385E-04 4,813390E-04 5,455679E-04 5,443900E-04 8,258603E-04 A8 = 4,557263E-05 3,636846E-05 -1,855493E-05 -3,347372E-05 -6,477894E-05 -8,971421 E-05 A10 = -4,090489E-06 -2,268115E-06 7,519564E-07 2,016402E-06 5,376910E-06 6,821554E-06 A12 = 2,839808E-07 4,052147E-08 -1,991703E-08 -4,912704E-08 -2,323996E-07 -2,824479E-07 A14 = -1,369058E-08 A16 = 4,023230E-10 A18 = -5,301318E-12 Surface No. 10 11 12 13 14 15 k= -9,00000E+01 1,05828E+00 6,11829E+01 1,28855E+01 6,18348E+00 -6,89133E+00 A4 = -5,138228E-03 -4,093602E-03 -3,243767E-03 -2,930440E-03 -3,080255E-03 -8,656323E-03 A6 = 1,851368E-03 1,692102E-03 3,934936E-04 2,840957E-05 3,374902E-04 2,735180E-03 A8 = -3,361787E-04 -2,902713E-04 -1,994979E-04 -6,143690E-05 -3,890658E-04 -7,968363E-04 A10 = 3,867789E-05 3,116573E-05 7,803433E-05 1,718090E-05 1,019983E-04 1,428149E-04 A12 = -2,884186E-06 -1,527430E-06 -1,999598E-05 -3,342319E-06 -1,505891 E-05 -1,389892E-05 A14 = 9,615016E-08 -2,531152E-08 3,359856E-06 4,372798E-07 1,376915E-06 6,238413E-07 A16 = 4,076987E-09 -3,504217E-07 -3,285694E-08 -7,913645E-08 2,791660E-09 A18 = 2,172226E-08 1,241653E-09 2,202703E-09 -1,553211 E-09 A20 = -6,171032E-10 6,201526E-11 A22 = -8,212800E-13 Surface No. 16 17 k = 1,29606E+01 -7,68784E+00 A4 = -5,258414E-03 -6,601698E-03 A6 = -2,874719E-04 7,109870E-04 A8 = 1,901466E-04 -6,021116E-05 A10 = -2,689331 E-05 4,010531 E-06 A12 = 2,111520E-06 -2,053754E-07 A14 = -1,051738E-07 7,665254E-09 A16 = 3,405016E-09 -1,969268E-10 A18 = -6,959133E-11 3,238166E-12 A20 = 8,170656E-13 -3,012399E-14 A22 = -4,209471 E-15 1,177357E-16

[0234] In the 9th embodiment, the equation for the aspherical surface profiles of the aforementioned lens elements is the same as the equation for the 1st embodiment. Likewise, the definitions of these parameters, which are given in the following table, are the same as in the 1st embodiment, with corresponding values ​​for the 9th embodiment; therefore, no further explanation is required in this regard.

[0235] Furthermore, these parameters from Table 9A and Table 9B can be calculated as the following values ​​and they satisfy the following conditions in Table 9C: Table 9C - 9. Design f [mm] 6,76 (R3+R7) / (R3-R7) -0,46 Fno 1,64 (|R3|+|R4|+R16) / f 1,56 HFOV [Grade] 45,8 CTmax / ATmax 0,56 FOV [degrees] 91,6 CT3 / CT5 2,11 f / EPD 1,64 (T67+T78) / (CT1 +CT8) 1,30 tan(HFOV) 1,03 BL / T12 0,73 EPD / lmgH 0,58 T45 / T56 0,07 f / lmgH 0,96 (T23+T34+T45) / T12 0,07 SL / TL 0,68 V3 / V4 0,93 BL / SD 0,22 V7 / V3 0,67 f / f2 -0,06 tan(CRA) 0,69 f8 / f1 0,16 ET8 / ET1 1,26 f3 / f4 0,73 SAG2R1 / CT2 -1,23 R3 / f -0,55 SAG3R2 / CT3 -0,17 f / R13 -0,59 SAG7R1 / CT7 -1,28 R4 / R5 -0,83 SAG8R1 / CT8 -0,55 R16 / R9 0,02 Y8R2 / Y7R1 1,86 <10. Design>

[0236] Fig.Figure 19 is a schematic view of an imaging device 10 according to the 10th embodiment of the present disclosure. Fig. Figure 20 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the imaging device 10 according to the 10th embodiment. Fig.19 The imaging device 10 comprises an image-capturing optical lens arrangement (reference numerals omitted) and an image sensor IS. The image-capturing optical lens arrangement comprises, in an order from an object side to an image side along a beam path, a first lens element E1, a second lens element E2, an aperture diaphragm ST, a third lens element E3, a fourth lens element E4, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, an eighth lens element E8, a filter E9 and an image surface IMG, wherein the image sensor IS is arranged on the image surface IMG of the image-capturing optical lens arrangement.The image-capturing optical lens arrangement comprises eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8) without any additional one or more lens elements inserted between the first lens element E1 and the eighth lens element E8, and there is an air gap along an optical axis between all two adjacent lens elements of the eight lens elements.

[0237] The first lens element E1, with negative refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The first lens element E1 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the first lens element E1 includes an inflection point and a critical point, and the image-side surface of the first lens element E1 also includes an inflection point and a critical point.

[0238] The second lens element E2, with positive refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The second lens element E2 is made of glass, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the second lens element E2 includes an inflection point, and the image-side surface of the second lens element E2 includes an inflection point and a critical point.

[0239] The third lens element E3, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is concave in a paraxial region. The third lens element E3 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the image-side surface of the third lens element E3 includes an inflection point and a critical point.

[0240] The fourth lens element E4, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is also convex in a paraxial region. The fourth lens element E4 is made of a glass material, and both the object-side and image-side surfaces are spherical.

[0241] The fifth lens element E5, with negative refractive power, has an object-side surface that is concave in a paraxial region, and an image-side surface that is also concave in a paraxial region. The fifth lens element E5 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the image-side surface of the fifth lens element E5 includes an inflection point.

[0242] The sixth lens element E6, with positive refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The sixth lens element E6 is made of a plastic material, and both the object-side and image-side surfaces are aspheric. Furthermore, the object-side surface of the sixth lens element E6 includes two inflection points, and the image-side surface of the sixth lens element E6 includes one inflection point.

[0243] The seventh lens element E7, with negative refractive power, has an object-side surface that is concave in a paraxial region, and an image-side surface that is also concave in a paraxial region. The seventh lens element E7 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the seventh lens element E7 includes one inflection point, and the image-side surface of the seventh lens element E7 includes three inflection points and one critical point.

[0244] The eighth lens element E8, with negative refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is concave in a paraxial region. The eighth lens element E8 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the eighth lens element E8 includes three inflection points and two critical points, and the image-side surface of the eighth lens element E8 includes three inflection points and one critical point.

[0245] The E9 filter consists of a glass material arranged in sequence between the eighth lens element E8 and the image surface IMG, and it does not affect the focal length of the image-capturing optical lens arrangement.

[0246] The detailed optical data of the 10th embodiment are shown in Table 10A and the aspherical surface data are shown in Table 10B below. Table 10A - 10. Design f = 6.00 mm, Fno = 1.58, HFOV = 48.9 degrees Surface No. radius of curvature thickness material index Abbe number Focal length 0 object Infinite Infinite 1 Lens 1 -16,1087 ASP 1,788 plastic 1,566 37,4 -36,74 2 -74,3554 ASP 2,631 3 Lens 2 -3,2976 ASP 0,722 Glass 1,603 60,6 401,73 4 -3,5213 ASP 0,601 5 Ape.blende Flat -0,532 6 Lens 3 4,8719 ASP 1,238 plastic 1,544 56,0 13,60 7 12,9843 ASP 0,478 8 Lens 4 10,6888 SPH 1,380 Glass 1,720 50,4 7,14 9 -9,3791 SPH 0,067 10 Lens 5 -17,9283 ASP 0,390 plastic 1,615 25,3 -10,83 11 10,7011 ASP 0,779 12 Lens 6 -82,4735 ASP 1,587 plastic 1,544 55,9 8,24 13 -4,2769 ASP 0,402 14 Lens 7 -10,2231 ASP 0,611 plastic 1,650 21,8 -14,05 15 87,3053 ASP 1,705 16 Lens 8 4,5649 ASP 0,624 plastic 1,614 26,0 -15,87 17 2,9465 ASP 0,620 18 filter Flat 0,200 Glass 1,517 64,2 - 19 Flat 0,339 20 Picture Flat - The reference wavelength is 587.6 nm (d-line). Table 10B - Aspheric coefficients Surface No. 1 2 3 4 6 7 k= -1,26116E+00 -2,91868E+01 -6,50996E+00 -7,07518E+00 -1,02074E+00 -7,63606E+01 A4 = 3,348314E-03 5,103984E-03 -8,821474E-03 -9,341125E-03 -4,135110E-03 -4,603198E-03 A6 = -1,503822E-04 -2,757423E-04 1,422187E-03 2,344273E-03 1,141544E-03 7,449051 E-04 A8 = 7,659418E-06 3,593524E-05 -9,304006E-05 -3,151371 E-04 -1,031391 E-04 -5,573049E-05 A10 = -3,146270E-07 -3,906845E-06 3,183595E-06 3,418703E-05 -8,777464E-06 -8,659361 E-06 A12 = 8,851291 E-09 2,855501 E-07 -4,540702E-08 -2,244605E-06 2,975820E-06 2,273239E-06 A14 = -1,481214E-10 -1,239622E-08 6,708355E-08 -2,150650E-07 -1,704274E-07 A16 = 1,175342E-12 2,253644E-10 A18 = -1,357647E-15 Surface No. 10 11 12 13 14 15 k = 2,90897E+01 2,09691 E+00 -9,00000E+01 -4,92167E-01 -2,70414E+01 9,00000E+01 A4 = -1,429587E-04 2,226379E-03 -2,163745E-03 5,484065E-03 3,452699E-03 -9,237186E-04 A6 = 1,107226E-03 1,066432E-03 1,504943E-03 1,682978E-03 3,341558E-04 1,232296E-03 A8 = -4,992529E-04 -4,221403E-04 -7,162750E-04 -1,644389E-03 -6,845678E-04 -5,184622E-04 A10 = 9,141971E-05 6,413950E-05 2,136900E-04 5,906130E-04 1,501270E-04 9,219030E-05 A12 = -8,886815E-06 -3,916040E-06 -4,180488E-05 -1,320717E-04 -1,665549E-05 -9,046204E-06 A14 = 3,817454E-07 -1,894267E-07 5,326793E-06 1,941008E-05 1,051057E-06 5,306445E-07 A16 = -4,188918E-09 4,560522E-08 -4,689299E-07 -1,815515E-06 -4,124074E-08 -1,865206E-08 A18 = -2,234697E-09 2,933838E-08 9,713799E-08 9,259354E-10 3,661839E-10 A20 = -9,530017E-10 -2,225159E-09 -3,135715E-12 Surface No. 16 17 k= -4,35827E+01 -5,72732E+00 A4 = 2,525225E-03 -6,477774E-03 A6 = -8,048954E-03 -9,006297E-04 A8 = 2,298525E-03 3,248209E-04 A10 = -3,734480E-04 -4,635995E-05 A12 = 3,984916E-05 4,061889E-06 A14 = -2,892299E-06 -2,450112E-07 A16 = 1,447938E-07 1,067300E-08 A18 = -5,000159E-09 -3,380452E-10 A20 = 1,170271 E-10 7,587506E-12 A22 = -1,773519E-12 -1,138362E-13 A24 = 1,571072E-14 1,018536E-15 A26 = -6,180078E-17 -4,093117E-18

[0247] In the 10th embodiment, the equation for the aspherical surface profiles of the aforementioned lens elements is the same as the equation for the 1st embodiment. Likewise, the definitions of these parameters, which are given in the following table, are the same as in the 1st embodiment, with corresponding values ​​for the 10th embodiment; therefore, no further explanation is required in this regard.

[0248] Furthermore, these parameters from Table 10A and Table 10B can be calculated as the following values ​​and they satisfy the following conditions in Table 10C: Table 10C - 10. Design f [mm] 6,00 (R3+R7) / (R3-R7) -0,53 Fno 1,58 (|R3|+|R4|+R16) / f 1,63 HFOV [Grade] 48,9 CTmax / ATmax 0,68 FOV [degrees] 97,8 CT3 / CT5 3,17 f / EPD 1,58 (T67+T78) / (CT1 +CT8) 0,87 tan(HFOV) 1,15 BL / T12 0,44 EPD / lmgH 0,55 T45 / T56 0,09 f / lmgH 0,87 (T23+T34+T45) / T12 0,23 SL / TL 0,63 V3 / V4 1,11 BL / SD 0,13 V7 / V3 0,39 f / f2 0,01 tan(CRA) 0,61 f8 / f1 0,43 ET8 / ET1 0,49 f3 / f4 1,90 SAG2R1 / CT2 -1,56 R3 / f -0,55 SAG3R2 / CT3 0,05 f / R13 -0,59 SAG7R1 / CT7 -1,67 R4 / R5 -0,72 SAG8R1 / CT8 -1,19 R16 / R9 -0,16 Y8R2 / Y7R1 1,88 <11. Design>

[0249] Fig.Figure 21 is a schematic view of an imaging device 11 according to the 11th embodiment of the present disclosure. Fig. Figure 22 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the imaging device 11 according to the 11th embodiment. Fig.21 The imaging device 11 comprises an image-capturing optical lens arrangement (reference numerals omitted) and an image sensor IS. The image-capturing optical lens arrangement comprises, in an order from an object side to an image side along a beam path, a first lens element E1, a second lens element E2, an aperture diaphragm ST, a third lens element E3, a fourth lens element E4, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, an eighth lens element E8, a filter E9 and an image surface IMG, wherein the image sensor IS is arranged on the image surface IMG of the image-capturing optical lens arrangement.The image-capturing optical lens arrangement comprises eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8) without any additional one or more lens elements inserted between the first lens element E1 and the eighth lens element E8, and there is an air gap along an optical axis between all two adjacent lens elements of the eight lens elements.

[0250] The first lens element E1, with negative refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is concave in a paraxial region. The first lens element E1 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the image-side surface of the first lens element E1 includes two inflection points.

[0251] The second lens element E2, with negative refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The second lens element E2 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the second lens element E2 includes an inflection point, and the image-side surface of the second lens element E2 also includes an inflection point.

[0252] The third lens element E3, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is also convex in a paraxial region. The third lens element E3 is made of a plastic material, and both the object-side and image-side surfaces are aspherical.

[0253] The fourth lens element E4, with negative refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The fourth lens element E4 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the fourth lens element E4 includes an inflection point and a critical point, and the image-side surface of the fourth lens element E4 includes an inflection point.

[0254] The fifth lens element E5, with negative refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is concave in a paraxial region. The fifth lens element E5 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the fifth lens element E5 includes three inflection points and three critical points, while the image-side surface includes one inflection point.

[0255] The sixth lens element E6, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is also convex in a paraxial region. The sixth lens element E6 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the sixth lens element E6 includes an inflection point and a critical point.

[0256] The seventh lens element E7, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is also convex in a paraxial region. The seventh lens element E7 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the seventh lens element E7 includes an inflection point and a critical point, and the image-side surface of the seventh lens element E7 includes an inflection point and a critical point.

[0257] The eighth lens element E8, with negative refractive power, has an object-side surface that is concave in a paraxial region, and an image-side surface that is also concave in a paraxial region. The eighth lens element E8 is made of a plastic material, and both the object-side and image-side surfaces are aspheric. Furthermore, the object-side surface of the eighth lens element E8 includes two inflection points, and the image-side surface of the eighth lens element E8 includes one inflection point and one critical point.

[0258] The E9 filter consists of a glass material arranged in sequence between the eighth lens element E8 and the image surface IMG, and it does not affect the focal length of the image-capturing optical lens arrangement.

[0259] The detailed optical data of the 11th embodiment are shown in Table 11A and the aspherical surface data are shown in Table 11B below. Table 11A - 11. Design f = 6.70 mm, Fno = 1.64, HFOV = 44.4 degrees Surface No. radius of curvature thickness material index Abbe number Focal length 0 object Infinite Infinite 1 Lens 1 16,4821 ASP 0,565 plastic 1,515 56,4 -30,29 2 7,9234 ASP 4,352 3 Lens 2 -3,4443 ASP 1,092 plastic 1,551 44,8 -122,94 4 -4,0375 ASP 0,760 5 Ape.blende Flat -0,713 6 Lens 3 4,6369 ASP 1,681 plastic 1,544 56,0 6,41 7 -12,2419 ASP 0,070 8 Lens 4 -41,9933 ASP 0,800 plastic 1,511 56,8 -609,90 9 -48,8471 ASP 0,151 10 Lens 5 87,3112 ASP 0,571 plastic 1,660 20,4 -12,82 11 7,6928 ASP 0,697 12 Lens 6 13,3388 ASP 1,317 plastic 1,544 56,0 11,96 13 -12,2638 ASP 2,173 14 Lens 7 138,8889 ASP 1,400 plastic 1,614 25,6 3,60 15 -2,2333 ASP 0,071 16 Lens 8 -2,9945 ASP 0,913 plastic 1,639 23,5 -2,54 17 3,9450 ASP 0,700 18 filter Flat 0,210 Glass 1,517 64,2 - 19 Flat 0,669 20 Picture Flat - The reference wavelength is 587.6 nm (d-line). Table 11B - Aspheric coefficients Surface No. 1 2 3 4 6 7 k= 8,90892E-01 6,23405E-02 -4,66215E+00 -5,53953E+00 -1,29261 E+00 8,80790E+00 A4 = 5,697960E-03 6,911540E-03 -5,830829E-03 -4,996676E-03 -2,072590E-03 -8,595963E-03 A6 = -3,766557E-04 -3,508375E-04 4,337025E-04 7,119099E-04 3,022493E-04 2,934434E-03 A8 = 2,069325E-05 1,648714E-05 -5,983537E-06 -4,783587E-05 -2,618418E-05 -5,329181 E-04 A10 = -6,379217E-07 -9,420499E-08 -3,843775E-07 3,096041 E-06 2,007409E-06 5,986506E-05 A12 = -1,718871 E-08 -6,848916E-08 1,049190E-08 -1,001930E-07 -1,221602E-07 -3,791398E-06 A14 = 2,138200E-09 2,325074E-09 4,476930E-10 1,029598E-07 A16 = -6,752180E-11 A18 = 7,828362E-13 Surface No. 8 9 10 11 12 13 k = -9,00000E+01 9,00000E+01 -9,00000E+01 9,28308E-01 1,24739E+01 -1,28472E+01 A4 = -3,131311 E-03 -6,323899E-04 -7,416541 E-03 -5,598016E-03 -2,923815E-03 -3,298893E-03 A6 = 1,287178E-03 -9,594818E-04 2,426272E-03 2,411423E-03 3,764055E-04 1,704080E-04 A8 = -1,111399E-04 4,257752E-04 -4,970929E-04 -5,476529E-04 -1,550263E-04 -6,873939E-05 A10 = -2,219703E-05 -1,004231 E-04 7,074619E-05 8,351232E-05 4,655831 E-05 2,105682E-05 A12 = 5,887370E-06 1,418198E-05 -5,550004E-06 -6,793860E-06 -9,796792E-06 -4,100679E-06 A14 = -4,926759E-07 -1,047317E-06 1,641190E-07 2,154492E-07 1,375031E-06 4,950362E-07 A16 = 1,543785E-08 3,091525E-08 -4,399690E-10 -1,080634E-07 -3,145126E-08 A18 = 4,148729E-09 9,209541E-10 A20 = -5,614505E-11 Surface No. 14 15 16 17 k= -9,00000E+01 -9,61086E+00 -1,54980E+01 -1,62908E+01 A4 = -6,533378E-03 4,687210E-03 -1,445271 E-03 -7,108233E-03 A6 = 1,291564E-03 -4,085399E-03 -5,229438E-03 1,301138E-03 A8 = -1,329425E-03 6,927731 E-04 2,152326E-03 -1,773682E-04 A10 = 5,220023E-04 8,427645E-05 -4,060994E-04 1,664925E-05 A12 = -1,274857E-04 -5,313620E-05 4,599328E-05 -1,095127E-06 A14 = 2,014756E-05 1,019378E-05 -3,389227E-06 5,019840E-08 A16 = -2,055934E-06 -1,132049E-06 1,649030E-07 -1,566753E-09 A18 = 1,318288E-07 8,124411 E-08 -5,126306E-09 3,161682E-11 A20 = -4,861373E-09 -3,841324E-09 9,229434E-11 -3,696413E-13 A22 = 7,881447E-11 1,159670E-10 -7,315711 E-13 1,883605E-15 A24 = -2,029066E-12 A26 = 1,565894E-14

[0260] In the 11th embodiment, the equation for the aspherical surface profiles of the aforementioned lens elements is the same as the equation for the 1st embodiment. Likewise, the definitions of these parameters, which are given in the following table, are the same as in the 1st embodiment, with corresponding values ​​for the 11th embodiment; therefore, no further explanation is necessary in this regard.

[0261] Furthermore, these parameters can be calculated from Table 11A and Table 11B as the following values ​​and they satisfy the following conditions in Table 11C: Table 11C - 11. Design f [mm] 6,70 (R3+R7) / (R3-R7) -1,18 Fno 1,64 (|R3|+|R4|+R16) / f 1,71 HFOV [Grade] 44,4 CTmax / ATmax 0,39 FOV [degrees] 88,8 CT3 / CT5 2,94 f / EPD 1,64 (T67+T78) / (CT1 +CT8) 1,52 tan(HFOV) 0,98 BL / T12 0,36 EPD / lmgH 0,61 T45 / T56 0,22 f / lmgH 1,00 (T23+T34+T45) / T12 0,06 SL / TL 0,61 V3 / V4 0,99 BL / SD 0,17 V7 / V3 0,46 f / f2 -0,05 tan(CRA) 0,80 f8 / f1 0,08 ET8 / ET1 2,08 f3 / f4 -0,01 SAG2R1 / CT2 -1,35 R3 / f -0,51 SAG3R2 / CT3 -0,27 f / R13 0,05 SAG7R1 / CT7 -0,89 R4 / R5 -0,87 SAG8R1 / CT8 -1,17 R16 / R9 0,05 Y8R2 / Y7R1 1,66 <12. Design>

[0262] Fig.Figure 23 is a schematic view of an imaging device 12 according to the 12th embodiment of the present disclosure. Fig. Figure 24 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the imaging device 12 according to the 12th embodiment. Fig.23 The imaging device 12 comprises an image-capturing optical lens arrangement (reference numerals omitted) and an image sensor IS. The image-capturing optical lens arrangement comprises, in an order from an object side to an image side along a beam path, a first lens element E1, a second lens element E2, an aperture diaphragm ST, a third lens element E3, a fourth lens element E4, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, an eighth lens element E8, a filter E9 and an image surface IMG, wherein the image sensor IS is arranged on the image surface IMG of the image-capturing optical lens arrangement.The image-capturing optical lens arrangement comprises eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8) without any additional one or more lens elements inserted between the first lens element E1 and the eighth lens element E8, and there is an air gap along an optical axis between all two adjacent lens elements of the eight lens elements.

[0263] The first lens element E1 with negative refractive power has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The first lens element E1 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the first lens element E1 includes two inflection points and a critical point, and the image-side surface of the first lens element E1 includes one inflection point and a critical point.

[0264] The second lens element E2, with negative refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The second lens element E2 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the second lens element E2 includes an inflection point, and the image-side surface of the second lens element E2 also includes an inflection point.

[0265] The third lens element E3, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is also convex in a paraxial region. The third lens element E3 is made of a plastic material, and both the object-side and image-side surfaces are aspherical.

[0266] The fourth lens element E4, with positive refractive power, has an object-side surface that is convex in a paraxial region, and an image-side surface that is also convex in a paraxial region. The fourth lens element E4 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the fourth lens element E4 includes an inflection point, and the image-side surface of the fourth lens element E4 includes an inflection point.

[0267] The fifth lens element E5, with negative refractive power, has an object-side surface that is concave in a paraxial region, and an image-side surface that is also concave in a paraxial region. The fifth lens element E5 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the fifth lens element E5 includes an inflection point.

[0268] The sixth lens element E6, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is also convex in a paraxial region. The sixth lens element E6 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the sixth lens element E6 includes two inflection points and two critical points, and the image-side surface of the sixth lens element E6 includes one inflection point and one critical point.

[0269] The seventh lens element E7, with positive refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The seventh lens element E7 is made of a plastic material, and both the object-side and image-side surfaces are aspheric. Furthermore, the object-side surface of the seventh lens element E7 includes an inflection point, and the image-side surface of the seventh lens element E7 also includes an inflection point.

[0270] The eighth lens element E8, with negative refractive power, has an object-side surface that is concave in a paraxial region, and an image-side surface that is also concave in a paraxial region. The eighth lens element E8 is made of a plastic material, and both the object-side and image-side surfaces are aspheric. Furthermore, the object-side surface of the eighth lens element E8 includes two inflection points, and the image-side surface of the eighth lens element E8 includes one inflection point and one critical point.

[0271] The E9 filter consists of a glass material arranged in sequence between the eighth lens element E8 and the image surface IMG, and it does not affect the focal length of the image-capturing optical lens arrangement.

[0272] The detailed optical data of the 12th embodiment are shown in Table 12A and the aspherical surface data are shown in Table 12B below. Table 12A - 12. Design f = 6.80 mm, Fno = 1.52, HFOV = 44.4 degrees Surface No. radius of curvature thickness material index Abbe number Focal length 0 object Infinite Infinite 1 Lens 1 -19,8617 ASP 0,861 plastic 1,529 45,4 -57,91 2 -57,2856 ASP 1,777 3 Lens 2 -4,1154 ASP 1,254 plastic 1,551 44,8 -70,35 4 -5,1028 ASP 0,725 5 Ape.blende Flat -0,678 6 Lens 3 4,6838 ASP 1,559 plastic 1,544 56,0 7,81 7 -40,5789 ASP 0,039 8 Lens 4 9,2599 ASP 1,357 plastic 1,544 56,0 12,56 9 -24,7521 ASP 0,068 10 Lens 5 -31,9525 ASP 0,581 plastic 1,639 23,5 -8,74 11 6,8150 ASP 0,792 12 Lens 6 90,6548 ASP 0,905 plastic 1,544 56,0 15,95 13 -9,5644 ASP 1,700 14 Lens 7 -11,7657 ASP 0,829 plastic 1,614 25,6 5,33 15 -2,6277 ASP 0,056 16 Lens 8 -11,7059 ASP 1,198 plastic 1,639 23,5 -3,46 17 2,8339 ASP 0,700 18 filter Flat 0,200 Glass 1,517 64,2 - 19 Flat 0,541 20 Picture Flat - The reference wavelength is 587.6 nm (d-line). Table 12B - Aspheric coefficients Surface No. 1 2 3 4 6 7 k= -3,57134E+01 -9,00000E+01 -8,63509E+00 -6,42585E+00 -6,43665E-01 2,78822E+01 A4 = 4,191774E-03 6,402289E-03 -7,176923E-03 -4,115178E-03 -4,661081E-03 -1,114303E-02 A6 = -2,874904E-04 -4,405902E-04 9,153764E-04 8,343492E-04 8,435995E-04 2,598217E-03 A8 = 1,463842E-05 2,898000E-05 -5,451237E-05 -5,353769E-05 -8,840988E-05 -3,457551 E-04 A10 = -4,464073E-07 -1,549342E-06 1,573348E-06 1,827774E-06 6,254550E-06 2,676980E-05 A12 = -7,033947E-10 3,719476E-08 -1,540743E-08 -3,278401 E-08 -2,052422E-07 -9,061095E-07 A14 = 3,217582E-10 A16 = 6,018710E-12 A18 = -4,159477E-13 Surface No. 8 9 10 11 12 13 k= 1,38941 E-01 -5,34680E+00 5,86214E+01 1,93704E+00 9,00000E+01 3,86592E+00 A4 = -6,69971 0E-03 8,801099E-03 5,392637E-03 -8,447497E-04 -1,362937E-03 -2,967809E-04 A6 = 2,316115E-03 -5,076014E-03 -3,841263E-03 1,645356E-05 5,385777E-04 -4,406214E-04 A8 = -3,617531 E-04 1,220433E-03 1,009581 E-03 5,324851 E-05 -4,234240E-04 2,146252E-04 A10 = 3,150695E-05 -1,351288E-04 -1,118609E-04 7,103003E-06 1,863027E-04 -6,834507E-05 A12 = -1,264547E-06 5,393714E-06 3,661761 E-06 -3,941017E-06 -5,553711E-05 1,077670E-05 A14 = 7,168227E-08 5,081018E-07 1,117941E-05 -6,677362E-07 A16 = -2,093161E-08 -1,428973E-06 -1,822227E-08 A18 = 1,038326E-07 3,181582E-09 A20 = -3,188217E-09 Surface No. 14 15 16 17 k= 3.91122E+00 -1,08334E+01 -6,64901 E+01 -1,08677E+01 A4 = 5,157216E-03 -6,266918E-03 -3,989909E-03 -7,708927E-03 A6 = -1,170312E-03 5,784892E-03 -2,316777E-03 1,144695E-03 A8 = -2,127034E-04 -3,077505E-03 7,354557E-04 -1,498452E-04 A10 = 9,759718E-05 9,388703E-04 -9,825589E-05 1,456619E-05 A12 = -1,877489E-05 -1,775390E-04 7,754012E-06 -9,982022E-07 A14 = 1,515678E-06 2,104855E-05 -3,938999E-07 4,696040E-08 A16 = -4,687817E-08 -1,560776E-06 1,308751 E-08 -1,476515E-09 A18 = 4,451919E-10 7,038484E-08 -2,758451 E-10 2,956124E-11 A20 = -1,769222E-09 3,350121 E-12 -3,397604E-13 A22 = 1,905097E-11 -1,784090E-14 1,699647E-15

[0273] In the 12th embodiment, the equation for the aspherical surface profiles of the aforementioned lens elements is the same as the equation for the 1st embodiment. Likewise, the definitions of these parameters, which are given in the following table, are the same as in the 1st embodiment, with corresponding values ​​for the 12th embodiment; therefore, no further explanation is required in this regard.

[0274] Furthermore, these parameters from Table 12A and Table 12B can be calculated as the following values ​​and they satisfy the following conditions in Table 12C: Table 12C - 12. Design f [mm] 6,80 (R3+R7) / (R3-R7) -0,38 Fno 1,52 (|R3|+|R4|+R16) / f 1,77 HFOV [Grade] 44,4 CTmax / ATmax 0,88 FOV [degrees] 88,8 CT3 / CT5 2,68 f / EPD 1,52 (T67+T78) / (CT1 +CT8) 0,85 tan(HFOV) 0,98 BL / T12 0,81 EPD / lmgH 0,66 T45 / T56 0,09 f / lmgH 1,00 (T23+T34+T45) / T12 0,09 SL / TL 0,68 V3 / V4 1,00 BL / SD 0,17 V7 / V3 0,46 f / f2 -0,10 tan(CRA) 0,73 f8 / f1 0,06 ET8 / ET1 1,42 f3 / f4 0,62 SAG2R1 / CT2 -0,91 R3 / f -0,60 SAG3R2 / CT3 -0,17 f / R13 -0,58 SAG7R1 / CT7 -1,84 R4 / R5 -1,09 SAG8R1 / CT8 -0,66 R16 / R9 -0,09 Y8R2 / Y7R1 1,83 <13. Design>

[0275] Fig.Figure 25 is a schematic view of an imaging device 13 according to the 13th embodiment of the present disclosure. Fig. Figure 26 shows spherical aberration curves, astigmatic field curves, and a distortion curve of the imaging device 13 according to the 13th embodiment. Fig.25 The imaging device 13 comprises an image-capturing optical lens arrangement (reference numeral omitted) and an image sensor IS. The image-capturing optical lens arrangement comprises, in an order from an object side to an image side along a beam path, a first lens element E1, a second lens element E2, an aperture diaphragm ST, a third lens element E3, a fourth lens element E4, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, an eighth lens element E8, a filter E9 and an image surface IMG, wherein the image sensor IS is arranged on the image surface IMG of the image-capturing optical lens arrangement.The image-capturing optical lens arrangement comprises eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8) without any additional one or more lens elements inserted between the first lens element E1 and the eighth lens element E8, and there is an air gap along an optical axis between all two adjacent lens elements of the eight lens elements.

[0276] The first lens element E1, with negative refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is also concave in a paraxial region. The first lens element E1 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the first lens element E1 includes an inflection point and a critical point.

[0277] The second lens element E2, with positive refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The second lens element E2 is made of glass, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the second lens element E2 includes an inflection point, and the image-side surface of the second lens element E2 includes an inflection point.

[0278] The third lens element E3, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is concave in a paraxial region. The third lens element E3 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the image-side surface of the third lens element E3 includes an inflection point.

[0279] The fourth lens element E4, with positive refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is also convex in a paraxial region. The fourth lens element E4 is made of a glass material, and both the object-side and image-side surfaces are spherical.

[0280] The fifth lens element E5, with negative refractive power, has an object-side surface that is concave in a paraxial region, and an image-side surface that is also concave in a paraxial region. The fifth lens element E5 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the image-side surface of the fifth lens element E5 includes an inflection point.

[0281] The sixth lens element E6, with positive refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The sixth lens element E6 is made of a plastic material, and both the object-side and image-side surfaces are aspheric. Furthermore, the object-side surface of the sixth lens element E6 includes two inflection points, and the image-side surface of the sixth lens element E6 includes one inflection point.

[0282] The seventh lens element E7, with negative refractive power, has an object-side surface that is concave in a paraxial region and an image-side surface that is convex in a paraxial region. The seventh lens element E7 is made of a plastic material, and both the object-side and image-side surfaces are aspheric. Furthermore, the object-side surface of the seventh lens element E7 includes three inflection points and two critical points.

[0283] The eighth lens element E8, with negative refractive power, has an object-side surface that is convex in a paraxial region and an image-side surface that is concave in a paraxial region. The eighth lens element E8 is made of a plastic material, and both the object-side and image-side surfaces are aspherical. Furthermore, the object-side surface of the eighth lens element E8 includes three inflection points and one critical point, and the image-side surface of the eighth lens element E8 also includes three inflection points and one critical point.

[0284] The E9 filter consists of a glass material arranged in sequence between the eighth lens element E8 and the image surface IMG, and it does not affect the focal length of the image-capturing optical lens arrangement.

[0285] The detailed optical data of the 13th embodiment are shown in Table 13A and the aspherical surface data are shown in Table 13B below. Table 13A - 13. Design f = 5.68 mm, Fno = 1.82, HFOV = 50.5 degrees Surface No. radius of curvature thickness material index Abbe number Focal length 0 object Infinite Infinite 1 Lens 1 -19,7610 ASP 1,861 plastic 1,529 45,4 -36,88 2 1651,0257 ASP 2,847 3 Lens 2 -3,3368 ASP 0,687 Glass 1,729 54,7 575,76 4 -3,5979 ASP 0,482 5 Ape.blende Flat -0,374 6 Lens 3 4,6353 ASP 0,946 plastic 1,544 56,0 13,83 7 11,2104 ASP 0,300 8 Lens 4 9,0567 SPH 1,196 Glass 1,729 54,7 6,24 9 -8,6430 SPH 0,059 10 Lens 5 -18,8707 ASP 0,437 plastic 1,615 25,3 -9,84 11 8,9949 ASP 0,912 12 Lens 6 -22,6401 ASP 1,452 plastic 1,544 56,0 8,01 13 -3,7362 ASP 0,329 14 Lens 7 -8,8525 ASP 0,503 plastic 1,614 25,6 -15,25 15 -168,0958 ASP 1,688 16 Lens 8 6,4438 ASP 0,636 plastic 1,615 25,4 -11,56 17 3,2523 ASP 0,600 18 filter Flat 0,200 Glass 1,517 64,2 - 19 Flat 0,286 20 Picture Flat - The reference wavelength is 587.6 nm (d-line). Table 13B - Aspheric coefficients Surface No. 1 2 3 4 6 7 k= -9,92258E-01 9,00000E+01 -6,25512E+00 -7,43219E+00 -7,58964E-01 -6,41552E+01 A4 = 3,217582E-03 4,973387E-03 -8,838116E-03 -8,662942E-03 -3,916067E-03 -5,892250E-03 A6 = -1,315058E-04 -1,362683E-04 1,528815E-03 2,419913E-03 9,374124E-04 1,318490E-03 A8 = 5,779909E-06 6,002062E-06 -1,060900E-04 -3,858041 E-04 2,013409E-04 7,877814E-06 A10 = -2,059202E-07 -2,646208E-07 1,868906E-06 5,233179E-05 -1,504590E-04 -7,642648E-05 A12 = 5,488798E-09 4,429811 E-08 9,966125E-08 -4,749948E-06 3,331668E-05 1,881241 E-05 A14 = -1,002646E-10 -3,981457E-09 1,989844E-07 -2,790485E-06 -1,736079E-06 A16 = 1,074256E-12 9,987019E-11 A18 = -4,246426E-15 Surface No. 10 11 12 13 14 15 k= 4,32649E+01 4,11011 E+00 -7,04882E+01 -7,37187E-01 -2, 04510 E+01 9,00000E+01 A4 = -2,401402E-03 5,545303E-04 -4,483708E-03 7,756633E-03 6,721571 E-03 3,101787E-03 A6 = 2,582004E-03 2,338081 E-03 3,544899E-03 -7,219415E-04 -1,050178E-03 -5,847183E-04 A8 = -1,092793E-03 -9,293861 E-04 -2,404984E-03 -1,366468E-05 -4,717414E-04 3,416585E-05 A10 = 2,985236E-04 2,287430E-04 1,110935E-03 -1,229988E-04 1,497598E-04 -2,342973E-05 A12 = -5,452801 E-05 -3,842903E-05 -3,432947E-04 6,169799E-05 -2,567333E-05 6,798331 E-06 A14 = 5,691731 E-06 4,112095E-06 6,874514E-05 -1,340438E-05 2,866490E-06 -8,385297E-07 A16 = -2,667330E-07 -2,486542E-07 -8,552154E-06 1,552222E-06 -1,895947E-07 5,292248E-08 A18 = 5,535688E-09 6,052219E-07 -9,279923E-08 5,469300E-09 -1,699192E-09 A20 = -1,873441 E-08 2,273281 E-09 2,211882E-11 Surface No. 16 17 k= -9,00000E+01 -6,95746E+00 A4 = -6,268618E-03 -9,477151E-03 A6 = -5,618670E-03 -2,068735E-04 A8 = 1,900625E-03 2,370896E-04 A10 = -3,308811 E-04 -4,055899E-05 A12 = 3,694968E-05 3,816772E-06 A14 = -2,752971 E-06 -2,297245E-07 A16 = 1,378999E-07 9,287633E-09 A18 = -4,588227E-09 -2,523537E-10 A20 = 9,732141E-11 4,418797E-12 A22 = -1,192180E-12 -4,489135E-14 A24 = 6,423206E-15 1,999313E-16

[0286] In the 13th embodiment, the equation for the aspherical surface profiles of the aforementioned lens elements is the same as the equation for the 1st embodiment. Likewise, the definitions of these parameters, which are given in the following table, are the same as in the 1st embodiment, with corresponding values ​​for the 13th embodiment; therefore, no further explanation is required in this regard.

[0287] Furthermore, these parameters from Table 13A and Table 13B can be calculated as the following values ​​and they satisfy the following conditions in Table 13C: Table 13C - 13. Design f [mm] 5,68 (R3+R7) / (R3-R7) -0,46 Fno 1,82 (|R3|+|R4|+R16) / f 1,79 HFOV [Grade] 50,5 CTmax / ATmax 0,65 FOV [degrees] 101,0 CT3 / CT5 2,16 f / EPD 1,82 (T67+T78) / (CT1 +CT8) 0,81 tan(HFOV) 1,21 BL / T12 0,38 EPD / lmgH 0,45 T45 / T56 0,06 f / lmgH 0,81 (T23+T34+T45) / T12 0,16 SL / TL 0,61 V3 / V4 1,02 BL / SD 0,13 V7 / V3 0,46 f / f2 0,01 tan(CRA) 0,79 f8 / f1 0,31 ET8 / ET1 0,44 f3 / f4 2,21 SAG2R1 / CT2 -1,31 R3 / f -0,59 SAG3R2 / CT3 0,10 f / R13 -0,64 SAG7R1 / CT7 -1,85 R4 / R5 -0,78 SAG8R1 / CT8 -1,64 R16 / R9 -0,17 Y8R2 / Y7R1 1,87 <14. Design>

[0288] Fig.Figure 29 is a schematic view of an imaging device 100 according to the 14th embodiment of the present disclosure. Fig. In the 14th embodiment, the imaging device 100 is a camera module, wherein the imaging device 100 comprises an imaging lens arrangement 101, a drive device 102, and an image sensor 103. The imaging lens arrangement 101 comprises the image-capturing optical lens arrangement of the present disclosure and a lens housing (not shown in the drawings) to accommodate the image-capturing optical lens arrangement. The imaging device 100 can focus light from an imaged object via the imaging lens arrangement 101, perform image focusing by means of the drive device 102, and generate an image on the image sensor 103, and the image information can be transmitted.

[0289] The drive device 102 can be an autofocus module that can be driven by drive systems such as voice coil motors (VCMs), electromechanical microsystems (MEMS), piezoelectric systems, and shape memory alloys, etc. The image-capturing optical lens arrangement can achieve a favorable imaging position by means of the drive device 102 in order to capture sharp images when the imaged object is positioned at different object distances.

[0290] The imaging device 100 can include the image sensor 103, which is arranged on the image surface of the image-capturing optical lens arrangement, such as CMOS and CCD, with superior light sensitivity and low noise. This is advantageous for providing realistic images with high-resolution image quality. Furthermore, the imaging device 100 can also include an image stabilization module 104, which can be a kinetic energy sensor, such as an accelerometer, a gyroscope, or a Hall effect sensor. In the 14th embodiment, the image stabilization module 104 is a gyroscope, but is not limited to this.Thus, the variation of different axial directions of the image-capturing optical lens arrangement can be adjusted to compensate for image blur caused by movement at the moment of exposure. This is also advantageous for improving image quality when photographing moving subjects and in low light. Furthermore, advanced image compensation functions such as optical image stabilization (OIS) and electronic image stabilization (EIS) can be incorporated. <15. Design>

[0291] Fig. Figure 30A is a schematic view of one side of an electronic device 200 according to the 15th embodiment of the present disclosure. Fig. 30B is a schematic view of another side of the electronic device 200 of Fig. 30A. Fig. 30C is a schematic view of the electronic device 200 of Fig. 30A. In Fig. 30A, Fig. 30B and Fig.According to the 15th embodiment, the electronic device 200 in 30C is a smartphone comprising imaging devices 100, 110, 120, 130, 140, a flash module 201, a focus assist module 202, an image signal processor (ISP) 203, a user interface 204, and an image software processor 205, each of the imaging devices 120, 130, 140 being a front camera. When the user captures images of a depicted object 206 via the user interface 204, the electronic device 200 focuses and produces an image via at least one of the imaging devices 100, 110, 120, 130, 140, while, if necessary, weak illumination is compensated for via the flash module 201. The electronic device 200 then rapidly focuses on the imaged object 206, according to the object distance information provided by the focusing assistance module 202, and optimizes the image via the image signal processor 203 and the image software processor 205.This allows for further improvement of image quality. The focus assist module 202 can operate conventionally via infrared or laser for rapid focusing, and a touchscreen or physical button can be used as the user interface 204, allowing the image to be processed with various functions of the image processing software.

[0292] Each of the imaging devices 100, 110, 120, 130, 140 according to the 15th embodiment can comprise the image-capturing optical lens arrangement of the present disclosure and can be the same imaging device 100 according to the aforementioned 14th embodiment or similar to it, and is not described further below. In detail, according to the 15th embodiment, the imaging devices 100, 110 can be a wide-angle imaging device or an ultra-wide-angle imaging device, or they can be a wide-angle imaging device or a telephoto imaging device. The imaging devices 120, 130, 140 can be a wide-angle imaging device, an ultra-wide-angle imaging device, or a time-of-flight (TOF) module, or they can be other imaging devices, not limited thereto.Furthermore, the connecting relationships between each of the imaging devices 110, 120, 130, 140 and other elements can be the same as in the imaging device 100 in . Fig. 30C, or they may be adaptively adjustable, depending on the type of imaging devices, which are not shown again or described in detail below. <16. Design>

[0293] Fig. Figure 31 is a schematic view of one side of an electronic device 300 according to the 16th embodiment of the present disclosure. According to the 16th embodiment, the electronic device 300 is a smartphone comprising imaging devices 310, 320, 330 and a flash module 301.

[0294] The electronic device 300 according to the 16th embodiment may comprise the same or similar elements as according to the 15th embodiment, and each of the imaging devices 310, 320, 330 according to the 16th embodiment may have a configuration that is the same as or similar to the configuration of the 15th embodiment, which is not described again here. In detail, according to the 16th embodiment, each of the imaging devices 310, 320, 330 may comprise the image-capturing optical lens arrangement of the present disclosure and may be the same imaging device 100 according to the aforementioned 14th embodiment or similar to it, and is not described again below.In detail, the imaging device 310 can be an ultra-wide-angle imaging device, the imaging device 320 can be a wide-angle imaging device, the imaging device 330 can be a telephoto imaging device (which may include a beam path folding element) or can be adaptively adjusted, depending on the type of imaging device, which is not limited to the arrangement. <17. Design>

[0295] Fig. Figure 32 is a schematic view of one side of an electronic device 400 according to the 17th embodiment of the present disclosure. According to the 17th embodiment, the electronic device 400 is a smartphone comprising imaging devices 410, 420, 430, 440, 450, 460, 470, 480, 490 and a flash module 401.

[0296] The electronic device 400 according to the 17th embodiment may comprise the same or similar elements as according to the 15th embodiment, and each of the imaging devices 410, 420, 430, 440, 450, 460, 470, 480, 490 and the flash module 401 may have a configuration that is the same as or similar to the configuration of the 15th embodiment, which is not described again here. In detail, according to the 1st embodiment, each of the imaging devices 410, 420, 430, 440, 450, 460, 470, 480, 490 may comprise the image-capturing optical lens arrangement of the present disclosure and may be the same imaging device 100 according to the aforementioned 14th embodiment or similar to it, and is not described again below.

[0297] In detail, each of the imaging devices 410, 420 can be an ultra-wide-angle imaging device, each of the imaging devices 430, 440 can be a wide-angle imaging device, each of the imaging devices 450, 460 can be a telephoto imaging device, each of the imaging devices 470, 480 can be a telephoto imaging device (which may include a beam path folding element), the imaging device 490 can be a TOF module or can be adaptively adapted, depending on the type of imaging devices, which is not limited to the arrangement. <18. Design>

[0298] Fig. Figure 33A is a schematic view of one side of an electronic device 500 according to the 18th embodiment of the present disclosure. Fig. Figure 33B is a schematic view of another side of the electronic device 500 according to the 18th embodiment of Fig. 33A. In Fig. 33A and Fig.33B, according to the 18th embodiment, the electronic device 500 is a smartphone comprising imaging devices 510, 520, 530, 540 and a user interface 504.

[0299] The electronic device 500 according to the 18th embodiment may comprise the same or similar elements as according to the 15th embodiment, and each of the imaging devices 510, 520, 530, 540 and the user interface 504 may have a configuration that is the same or similar to the configuration of the 15th embodiment and is not described again here. In detail, the imaging device 510 according to the 18th embodiment corresponds to a non-circular opening arranged on an outer surface of the electronic device 500 for receiving the image, and the imaging devices 520, 530, 540 may be a telephoto imaging device, a wide-angle imaging device, or an ultra-wide-angle imaging device, respectively, or may be adaptively adjusted, depending on the type of imaging device, which is not limited to the arrangement. <19. Design>

[0300] Fig.Figure 34 is a schematic view of one side of an electronic device 600 according to the 19th embodiment of the present disclosure. Fig. 34. According to the 19th embodiment, the electronic device 600 is an action camera comprising an imaging device 610 and a screen 601, wherein the imaging device 610 is connected to the screen 601 via a signal transmission system in order to display the real-time image captured by the imaging device 610 on the screen 601. The imaging device 610 may comprise the image-capturing optical lens arrangement of the present disclosure and may be the same imaging device 100 according to the aforementioned 14th embodiment or similar to it, and is not described further below. <20. Design>

[0301] Fig. Figure 35 is a schematic view of one side of an electronic device 700 according to the 20th embodiment of the present disclosure. Fig. 35 The electronic device 700 according to the 20th embodiment is an unmanned aerial vehicle comprising an imaging device 710. The imaging device 710 may comprise the image-capturing optical lens arrangement of the present disclosure and may be the same imaging device 100 according to the aforementioned 14th embodiment or similar to it, and is not described further below.

Claims

[1] Image-capturing optical lens arrangement comprising eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8), wherein the eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8) are arranged in a sequence from an object side to an image side along a ray 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), a seventh lens element (E7) and an eighth lens element (E8); wherein each of the eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8) has an object-side surface facing the object side and an image-side surface facing the image side; wherein the object-side surface of the second lens element (E2) is concave in a paraxial region; the image-side surface of the second lens element (E2) is convex in a paraxial region; the third lens element (E3) has a positive refractive power; the image-side surface of the fifth lens element (E5) is concave in a paraxial region; the eighth lens element (E8) has a negative refractive power; the image-side surface of the eighth lens element (E8) is concave in a paraxial region; the image-side surface of the eighth lens element (E8) includes at least one inflection point (IP); where an axial distance between the first lens element (E1) and the second lens element (E2) is T12, an axial distance between the fourth lens element (E4) and the fifth lens element (E5) is T45, an axial distance between the fifth lens element (E5) and the sixth lens element (E6) is T56, an axial distance between the image-side surface of the eighth lens element (E8) and an image surface (IMG) is BL, a focal length of the image-capturing optical lens arrangement is f, a radius of curvature of the object-side surface of the second lens element (E2) is R3, and the following conditions are met: 0 <T45 / T56<0,75; 0.20 <BL / T12<0,95; and -1.30 <R3 / f<−0,25. [2] Image-capturing optical lens arrangement according to claim 1, wherein the object-side surface of the third lens element (E3) is convex in a paraxial region thereof, is half of a maximum field of view of the image-capturing optical lens arrangement HFOV and the following condition is met: 0.70 <tan(HFOV)<1,45. [3] Image-capturing optical lens arrangement according to claim 1, further comprising: an aperture diaphragm (ST) located between the first lens element (E1) and the fifth lens element (E5); wherein the fifth lens element (E5) has a negative refractive power; the focal length of the image-capturing optical lens arrangement is f, the diameter of the entrance pupil of the image-capturing optical lens arrangement is EPD, and the following condition is met: 1.20 <f / EPD<2,00. [4] Image-capturing optical lens arrangement according to claim 1, wherein the axial distance between the fourth lens element (E4) and the fifth lens element (E5) is T45, the axial distance between the fifth lens element (E5) and the sixth lens element (E6) is T56, a focal length of the third lens element (E3) is f3, a focal length of the fourth lens element (E4) is f4, and the following conditions are met: 0.01 <T45 / T56<0,45; and -0.30 <f3 / f4<2,60. [5] Image-capturing optical lens arrangement according to claim 1, wherein the axial distance between the first lens element (E1) and the second lens element (E2) is T12, the axial distance between the image-side surface of the eighth lens element (E8) and the image surface (IMG) is BL, an Abbe number of the third lens element (E3) is V3, an Abbe number of the seventh lens element (E7) is V7 and the following conditions are met: 0.30 <BL / T12<0,85; and 0.20 <V7 / V3<0,90. [6] Image-capturing optical lens arrangement according to claim 1, wherein the diameter of the entrance pupil of the image-capturing optical lens arrangement is EPD, the maximum image height of the image-capturing optical lens arrangement is ImgH and the following condition is met: 0.35 <EPD / ImgH<0,90. [7] Image-capturing optical lens arrangement according to claim 1, wherein the focal length of the image-capturing optical lens arrangement is f, a maximum image height of the image-capturing optical lens arrangement is ImgH, a focal length of the first lens element (E1) is f1, a focal length of the eighth lens element (E8) is f8 and the following conditions are met: 0.50 <f / ImgH<1,50; and -0.25 <f8 / f1<0,65. [8] Image-capturing optical lens arrangement according to claim 1, wherein a radius of curvature of the image-side surface of the second lens element (E2) is R4, a radius of curvature of the object-side surface of the third lens element (E3) is R5 and the following condition is met: -1.30 <R4 / R5<−0,40. [9] Image-capturing optical lens arrangement according to claim 1, wherein the focal length of the image-capturing optical lens arrangement is f, the radius of curvature of the object-side surface of the second lens element (E2) is R3 and the following condition is met: -0.80 <R3 / f<−0,40. [10] Image-capturing optical lens arrangement according to claim 1, wherein the seventh lens element (E7) has a positive refractive power; the image-side surface of the seventh lens element (E7) is convex in a paraxial region thereof; the radius of curvature of the object-side surface of the second lens element (E2) is R3, a radius of curvature of the object-side surface of the fourth lens element (E4) is R7 and the following condition is met: −1.50<(R3+R7) / (R3−R7)<0. [11] Image-capturing optical lens arrangement according to claim 1, wherein the focal length of the image-capturing optical lens arrangement is f, the focal length of the second lens element (E2) is f2, the radius of curvature of the object-side surface of the second lens element (E2) is R3, the radius of curvature of the image-side surface of the second lens element (E2) is R4, the radius of curvature of the image-side surface of the eighth lens element (E8) is R16 and the following conditions are met: -0.40 <f / f2<0,30; and 0.80<(|R3|+|R4|+R16) / f<2.

70. [12] Image-capturing optical lens arrangement according to claim 1, wherein a maximum effective radius of the object-side surface of the seventh lens element (E7) is Y7R1, a maximum effective radius of the image-side surface of the eighth lens element (E8) is Y8R2, a displacement parallel with an optical axis from an axial vertex on the image-side surface of the third lens element (E3) to a position of a maximum effective radius on the image-side surface of the third lens element (E3) is SAG3R2, a central thickness of the third lens element (E3) is CT3 and the following conditions are met: 1.40 <Y8R2 / Y7R1<2,20; and -0.50 <SAG3R2 / CT3<0,30. [13] Image-capturing optical lens arrangement according to claim 1, wherein a displacement parallel with an optical axis from an axial vertex on the object-side surface of the seventh lens element (E7) to a position of a maximum effective radius on the object-side surface of the seventh lens element (E7) is SAG7R1, a central thickness of the seventh lens element (E7) is CT7, the focal length of the image-capturing optical lens arrangement is f, the radius of curvature of the object-side surface of the second lens element (E2) is R3, a radius of curvature of the image-side surface of the second lens element (E2) is R4, a radius of curvature of the image-side surface of the eighth lens element (E8) is R16, and the following conditions are met: -2.00 <SAG7R1 / CT7<−0,50; and 1.30<(|R3|+|R4|+R16) / f<2.

20. [14] Imaging device (1) comprising: the image-capturing optical lens arrangement according to claim 1; and an image sensor (IS) that is located on the image surface (IMG) of the image-capturing optical lens arrangement. [15] Image-capturing optical lens arrangement comprising eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8), wherein the eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8) are arranged in a sequence from an object side to an image side along a ray 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), a seventh lens element (E7) and an eighth lens element (E8); wherein each of the eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8) has an object-side surface facing the object side and an image-side surface facing the image side; wherein the object-side surface of the second lens element (E2) is concave in a paraxial region; the image-side surface of the second lens element (E2) is convex in a paraxial region; the third lens element (E3) has a positive refractive power; the image-side surface of the third lens element (E3) is convex in a paraxial region; the fifth lens element (E5) has a negative refractive power; the image-side surface of the fifth lens element (E5) is concave in a paraxial region; the eighth lens element (E8) has a negative refractive power; where 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 (E4) 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 T56, an axial distance between the sixth lens element (E6) and the seventh lens element (E7) is T67, an axial distance between the seventh lens element (E7) and the eighth lens element (E8) is T78, a maximum at T12, T23, T34, T45, T56, T67, T78 is ATmax, a midpoint thickness of the first lens element (E1) is CT1, a midpoint thickness of the second lens element (E2) is CT2, a midpoint thickness of the third lens element (E3) CT3 is, a midpoint thickness of the fourth lens element (E4) CT4 is, a midpoint thickness of the fifth lens element (E5) CT5 is,a central thickness of the sixth lens element (E6) is CT6, a central thickness of the seventh lens element (E7) is CT7, a central thickness of the eighth lens element (E8) is CT8, a maximum under CT1, CT2, CT3, CT4, CT5, CT6, CT7, CT8 is CTmax, a focal length of the image-capturing optical lens arrangement is f, a radius of curvature of the object-side surface of the seventh lens element (E7) is R13 and the following conditions are met:, 0 <T45 / T46<1,00; 0<(T23+T34+T45) / T12<0.65; -1.80 <f / R3<−0,30; and 0.15 <CTmax / ATmax<1,20. [16] Image-capturing optical lens arrangement according to claim 15, wherein the image-side surface of the eighth lens element (E8) is concave in a paraxial region thereof; the image-side surface of the eighth lens element (E8) comprises at least one critical point (CP); the focal length of the image-capturing optical lens arrangement is f, the entrance pupil diameter of the image-capturing optical lens arrangement is EPD, and the following condition is met: 1.40 < f / EPD < 1.

90. [17] Image-capturing optical lens arrangement according to claim 15, wherein the axial distance between the fourth lens element (E4) and the fifth lens element (E5) is T45, the axial distance between the fifth lens element (E5) and the sixth lens element (E6) is T56, a radius of curvature of the object-side surface of the fifth lens element (E5) is R9, a radius of curvature of the image-side surface of the eighth lens element (E8) is R16, and the following conditions are met: 0 <T45 / T56<0,60; and -0.60 <R16 / R9<0,30. [18] Image-capturing optical lens arrangement according to claim 15, further comprising: an aperture diaphragm (ST), wherein an axial distance between the aperture diaphragm (ST) and the image-side surface of the eighth lens element (E8) is SD, 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 axial distance between the third lens element (E3) and the fourth lens element (E4) is T34, the axial distance between the fourth lens element (E4) and the fifth lens element (E5) is T45, an axial distance between the image-side surface of the eighth lens element (E8) and an image surface (IMG) is BL, and the following conditions are met: 0.03<(T23+T34+T45) / T12<0.35; and 0.05 <BL / SD<0,35. [19] Image-capturing optical lens arrangement according to claim 15, wherein the focal length of the image-capturing optical lens arrangement is f, the radius of curvature of the object-side surface of the seventh lens element (E7) is R13, the central thickness of the third lens element (E3) is CT3, the central thickness of the fifth lens element (E5) is CT5 and the following conditions are met: -1.40 <f / R13<0; and 0.80 <CT3 / CT5<4,00. [20] Image-capturing optical lens arrangement according to claim 15, wherein the focal length of the image-capturing optical lens arrangement is f, the radius of curvature of the object-side surface of the seventh lens element (E7) is R13 and the following condition is met: -1.25 <f / R13<−0,15. [21] Image-capturing optical lens arrangement according to claim 15, wherein 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 axial distance between the third lens element (E3) and the fourth lens element (E4) is T34, the axial distance between the fourth lens element (E4) and the fifth lens element (E5) is T56, the axial distance between the sixth lens element (E6) and the seventh lens element (E7) is T67, the axial distance between the seventh lens element (E7) and the eighth lens element (E8) is T78, the maximum at T12, T23, T34, T45, T56, T67, T78 is ATmax, the central thickness of the first lens element (E1) is CT1, and the central thickness of the second lens element is (E2) CT2 is the midpoint thickness of the third lens element (E3) CT3 is the midpoint thickness of the fourth lens element (E4) CT4 is,the central thickness of the fifth lens element (E5) is CT5, the central thickness of the sixth lens element (E6) is CT6, the central thickness of the seventh lens element (E7) is CT7, the central thickness of the eighth lens element (E8) is CT8, the maximum under CT1, CT2, CT3, CT4, CT5, CT6, CT7, CT8 is CTmax, a radius of curvature of the object-side surface of the second lens element (E2) is R3, a radius of curvature of the object-side surface of the fourth lens element (E4) is R7, and the following conditions are met: 0.25 <CTmax / ATmax <1,10; and −1.35<(R3+R7) / (R3−R7)<0. [22] Image-capturing optical lens arrangement according to claim 15, wherein the axial distance between the sixth lens element (E6) and the seventh lens element (E7) is T67, the axial distance between the seventh lens element (E7) and the eighth lens element (E8) is T78, the central thickness of the first lens element (E1) is CT1, the central thickness of the eighth lens element (E8) is CT8, and the following condition is met: −1.35<(R3+R7) / (R3−R7)<0. [23] Image-capturing optical lens arrangement according to claim 15, wherein the focal length of the image-capturing optical lens arrangement is f, a maximum image height of the image-capturing optical lens arrangement is ImgH, a radius of curvature of the object-side surface of the second lens element (E2) is R3, a radius of curvature of the image-side surface of the second lens element (E2) is R4, a radius of curvature of the image-side surface of the eighth lens element (E8) is R16 and the following conditions are met: 0.60 <f / ImgH<1,40; and 1.10<(|R3|+|R4|+R16) / f<2.

50. [24] Image-capturing optical lens arrangement according to claim 15, further comprising: an aperture diaphragm (ST), wherein an axial distance between the aperture diaphragm (ST) and an image surface (IMG) SL is, an axial distance between the object-side surface of the first lens element (E1) and the image surface (IMG) TL is, an Abbe number of the third lens element (E3) V3 is, an Abbe number of the fourth lens element (E4) V4 is, and the following conditions are met: 0.60 <V3 / V4<1,40; and 0.55 <SL / TL<0,80. [25] Image-capturing optical lens arrangement according to claim 15, wherein a distance parallel to an optical axis between a position of a maximum effective radius on the object-side surface of the first lens element (E1) and a position of a maximum effective radius on the image-side surface of the first lens element (E1) is ET1, a distance parallel to the optical axis between a position of a maximum effective radius on the object-side surface of the eighth lens element (E8) and a position of a maximum effective radius on the image-side surface of the eighth lens element (E8) is ET8, an angle of incidence between a principal ray in a maximum field of view of the image-capturing optical lens arrangement and an image surface (IMG) is CRA, and the following conditions are met: 0.35 <ET8 / ET1<2,50; and 0.50 <tan(CRA)<1,00. [26] Image-capturing optical lens arrangement according to claim 15, wherein a displacement parallel with an optical axis from an axial vertex on the object-side surface of the second lens element (E2) to a position of maximum effective radius on the object-side surface of the second lens element (E2) is SAG2R1, a displacement parallel with an optical axis from an axial vertex on the object-side surface of the eighth lens element (E8) to a position of maximum effective radius on the object-side surface of the eighth lens element (E8) is SAG8R1, the central thickness of the second lens element (E2) is CT2, the central thickness of the eighth lens element (E8) is CT8, and the following conditions are met: -2.00 <SAG2R1 / CT2<−0,50; and -3.00 <SAG8R1 / CT8<0,10. [27] Image-capturing optical lens arrangement according to claim 15, wherein 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 axial distance between the third lens element (E3) and the fourth lens element (E4) is T34, the axial distance between the fourth lens element (E4) and the fifth lens element (E5) is T56, the axial distance between the sixth lens element (E6) and the seventh lens element (E7) is T67, the axial distance between the seventh lens element (E7) and the eighth lens element (E8) is T78, the maximum at T12, T23, T34, T45, T56, T67, T78 is ATmax, the central thickness of the first lens element (E1) is CT1, the central thickness of the second lens element (E2) CT2 is the midpoint thickness of the third lens element (E3) CT3 is the midpoint thickness of the fourth lens element (E4) CT4 is,the central thickness of the fifth lens element (E5) is CT5, the central thickness of the sixth lens element (E6) is CT6, the central thickness of the seventh lens element (E7) is CT7, the central thickness of the eighth lens element (E8) is CT8, the maximum among CT1, CT2, CT3, CT4, CT5, CT6, CT7, CT8 is CTmax, an axial distance between the image-side surface of the eighth lens element (E8) and an image surface (IMG) is BL, the focal length of the image-capturing optical lens arrangement is f, a radius of curvature of the object-side surface of the second lens element (E2) is R3, a radius of curvature of the image-side surface of the second lens element (E2) is R4, the 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 eighth lens element (E8) R16 is and the following conditions are met:, 0.03=T45 / T56=0.37; 0.35≤BL / T12≤0.81; −0.75≤R3 / f≤−0.48; 0.05≤(T23+T34+T45) / T12≤0.28; −1.06≤f / R13≤0.05; 0.36≤CTmax / ATmax≤0.98; and 1.44≤(|R3|+|R4|+R16) / f≤1.

94. [28] Electronic device (200) comprising an imaging device (100, 110, 120, 130, 140), wherein the imaging device (100, 110, 120, 130, 140) comprises: an image-capturing optical lens arrangement according to claim 15; and an image sensor (IS) that is arranged on an image surface (IMG) of the image-capturing optical lens arrangement.

Images