Photographic optical lens assembly, image acquisition unit and electronic device

Abstract

A photographing optical lens assembly comprising six lens elements (E1, E2, E3, E4, E5 and E6), wherein the six lens elements (E1, E2, E3, E4, E5 and E6) are, in order from an object side to an image side along an optical path, a first lens element (E1), a second lens element (E2), a third lens element (E3), a fourth lens element (E4), a fifth lens element (E5) and a sixth lens element (E6), and each of the six lens elements (E1, E2, E3, E4, E5 and E6) has an object-side surface facing the object side and an image-side surface facing the image side; wherein the first lens element (E1) has a negative refractive power, the object-side surface of the second lens element (E2) is concave in a paraxial region thereof, and the image-side surface of the third lens element (E3) is concave in a paraxial region thereof; and wherein an axial distance between the object-side surface of the first lens element (E1) and the image-side surface of the sixth lens element (E6) is TD, a focal length of the photographing optical lens assembly is f, a focal length of the fifth lens element (E5) is f5, an axial distance between the fifth lens element (E5) and the sixth lens element (E6) is T56, an axial distance between the object-side surface of the first lens element (E1) and an image surface (IMG) is TL, a maximum image height of the photographing optical lens assembly is ImgH, and the following conditions are met: 2.20 < TD / f < 4.50 ; − 0.80 < f / f5 < 0.20 ; 1.00 < TD / T56 < 35.00 ; and 0.50 < TL / ImgH < 4.00.

Description

BACKGROUNDTechnical area

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

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

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

[0004] According to one aspect of the present disclosure, a photographing optical lens assembly includes six lens elements. The six lens elements are, in order from an object side to an image side along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, and a sixth lens element. Each of the six lens elements has an object-side surface facing the object side and an image-side surface facing the image side.

[0005] Preferably, the first lens element has a negative refractive power. Preferably, the object-side surface of the second lens element is concave in a paraxial region thereof. Preferably, the image-side surface of the third lens element is concave in a paraxial region thereof.

[0006] When an axial distance between the object-side surface of the first lens element and the image-side surface of the sixth lens element is TD, a focal length of the photographing optical lens assembly is f, a focal length of the fifth lens element is f5, an axial distance between the fifth lens element and the sixth lens element is T56, an axial distance between the object-side surface of the first lens element and an image surface is TL, and a maximum image height of the photographing optical lens assembly is ImgH, the following conditions are preferably satisfied: 2.20 <TD / f<4,50; −0.80 <f / f5<0,20; 1.00 <TD / T56<35,00; und 0.50 <TD / ImgH<4,00.

[0007] According to another aspect of the present disclosure, a photographing optical lens assembly includes six lens elements. The six lens elements are, in order from an object side to an image side along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, and a sixth lens element. Each of the six lens elements has an object-side surface facing the object side and an image-side surface facing the image side.

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

[0009] When a focal length of the photographing optical lens assembly is f, a focal length of the first lens element is f1, a focal length of the second lens element is f2, a focal length of the third lens element is f3, a focal length of the fourth lens element is f4, a focal length of the fifth lens element is f5, a focal length of the sixth lens element is f6, a composite focal length of the fourth lens element and the fifth lens element is f45, a focal length of the j-th lens element is fj, a maximum absolute value of f / fj is |f / fj|max, an axial distance between the first lens element and the second lens element is T12, an axial distance between the second lens element and the third lens element is T23, an axial distance between the third lens element and the fourth lens element is T34, an axial distance between the fifth lens element and the sixth lens element is T56,a radius of curvature of the object-side surface of the second lens element is R3 and a radius of curvature of the image-side surface of the second lens element is R4, the following conditions are preferably met: 0.45 <f / f45<1,00; 0.70 <T56 / T34<20,00; T23 <T12; −5.00<(R3+R4) / (R3−R4); and |f / fj|max<1.50, where j=1,2,3,4,5 or 6.

[0010] According to another aspect of the present disclosure, a photographing optical lens assembly includes six lens elements. The six lens elements are, in order from an object side to an image side along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, and a sixth lens element. Each of the six lens elements has an object-side surface facing the object side and an image-side surface facing the image side.

[0011] Preferably, the first lens element has a negative refractive power. Preferably, the object-side surface of the second lens element is concave in a paraxial region thereof. Preferably, the image-side surface of the third lens element is concave in a paraxial region thereof. Preferably, the fifth lens element has a negative refractive power.

[0012] When an axial distance between the object-side surface of the first lens element and the image-side surface of the sixth lens element is TD, a focal length of the photographing optical lens assembly is f, a focal length of the third lens element is f3, an axial distance between the fifth lens element and the sixth lens element is T56, an axial distance between the object-side surface of the first lens element and an image surface is TL, and a maximum image height of the photographing optical lens assembly is ImgH, the following conditions are preferably satisfied: 2.20 <TD / f<4,50; −1.50 <f / f3<0,30; 1.00 <TD / T56<19,00; und 0.50 <TD / ImgH<4,00.

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

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

[0015] The disclosure can be better understood by reading the following detailed description of the embodiments with reference to the accompanying drawings: Fig. 1 is a schematic view of an image acquisition unit according to the first embodiment of the present disclosure; Fig.2 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image sensing unit according to the first embodiment; Fig. 3 is a schematic view of an image acquisition unit according to the second embodiment of the present disclosure; Fig. 4 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image sensing unit according to the second embodiment; Fig. 5 is a schematic view of an image acquisition unit according to the third embodiment of the present disclosure; Fig. 6 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image sensing unit according to the third embodiment; Fig. 7 is a schematic view of an image acquisition unit according to the 4th embodiment of the present disclosure; Fig.8 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image sensing unit according to the 4th embodiment; Fig. 9 is a schematic view of an image acquisition unit according to the 5th embodiment of the present disclosure; Fig. 10 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image sensing unit according to the 5th embodiment; Fig. 11 is a schematic view of an image acquisition unit according to the 6th embodiment of the present disclosure; Fig. 12 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image sensing unit according to the 6th embodiment; Fig. 13 is a schematic view of an image acquisition unit according to the 7th embodiment of the present disclosure; Fig.14 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image sensing unit according to the 7th embodiment; Fig. 15 is a schematic view of an image acquisition unit according to the 8th embodiment of the present disclosure; Fig. 16 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image sensing unit according to the 8th embodiment; Fig. 17 is a schematic view of an image acquisition unit according to the 9th embodiment of the present disclosure; Fig. 18 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image sensing unit according to the 9th embodiment; Fig. 19 is a schematic view of an image acquisition unit according to the 10th embodiment of the present disclosure; Fig.20 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image sensing unit according to the 10th embodiment; Fig. 21 is a schematic view of an image acquisition unit according to the 11th embodiment of the present disclosure; Fig. 22 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image sensing unit according to the 11th embodiment; Fig. 23 is a schematic view of an image acquisition unit according to the 12th embodiment of the present disclosure; Fig. 24 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image sensing unit according to the 12th embodiment; Fig. 25 is a perspective view of an image acquisition unit according to the 13th embodiment of the present disclosure; Fig.26 is a perspective view of an electronic device according to the 14th embodiment of the present disclosure; Fig. 27 is another perspective view of the electronic device in Fig. 26; Fig. 28 is a block diagram of the electronic device in Fig. 26; Fig. 29 is a schematic view of an electronic device according to the 15th embodiment of the present disclosure; Fig. 30 is another schematic view of the electronic device in Fig. 29; Fig. 31 is a perspective view of an electronic device according to the 16th embodiment of the present disclosure; Fig. 32 shows a schematic view of Y1R1, Y2R1, Y5R2 and Y6R2 according to the first embodiment of the present disclosure; Fig.33 shows a schematic view of inflection points and critical points on lens surfaces according to the first embodiment of the present disclosure; Fig. 34 is a schematic view showing a configuration of a light folding element in a photographing optical lens assembly according to an embodiment of the present disclosure; Fig. 35 shows a schematic view of another configuration of a light folding element in a photographing optical lens assembly according to an embodiment of the present disclosure; and Fig. 36 shows a schematic view of a configuration of two light folding elements in a photographing optical lens assembly according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0016] A photographing optical lens assembly includes six lens elements. The six lens elements are, in order from an object side to an image side along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, and a sixth lens element. Each of the six lens elements of the photographing optical lens assembly has an object-side surface facing the object side and an image-side surface facing the image side.

[0017] The first lens element has a negative refractive power. Therefore, it is beneficial for improving the light gathering ability to expand the field of view of the photographing optical lens assembly. The image-side surface of the first lens element may be concave in a paraxial region thereof. Therefore, it is beneficial for adjusting the propagation direction of light to converge the light path incident from a wider field of view.

[0018] The second lens element may have a positive refractive power. Therefore, it is advantageous to equalize the refractive power distribution in the photographing optical lens assembly. The object-side surface of the second lens element may be concave in a paraxial region thereof, and the image-side surface of the second lens element may be convex in a paraxial region thereof. Therefore, it is advantageous to adjust the surface shape and refractive power of the second lens element to correct aberrations.

[0019] The third lens element may have a negative refractive power. Therefore, it is advantageous for correcting aberrations such as spherical aberration. The image-side surface of the third lens element may be concave in a paraxial region thereof. Therefore, it is advantageous for adjusting the surface shape and refractive power of the third lens element to correct aberrations.

[0020] The fourth lens element may have a positive refractive power. Therefore, it is advantageous for reducing the size of the image-side portion of the photographing optical lens assembly. The image-side surface of the fourth lens element may be convex in a paraxial region thereof. Therefore, it is advantageous for adjusting the propagation direction of the light to adjust the size distribution in the image-side portion of the photographing optical lens assembly.

[0021] The fifth lens element may have a negative refractive power. Therefore, it is advantageous for correcting aberrations such as chromatic aberration. The image-side surface of the fifth lens element may be concave in a paraxial region thereof.

[0022] Therefore, it is advantageous to adjust the propagation direction of light to enlarge an image surface.

[0023] The image-side surface of the sixth lens element may be concave in a paraxial region thereof. Therefore, it is advantageous for adjusting the back focal length to reduce the total path length of the photographing optical lens assembly.

[0024] The object-side surface and the image-side surface of the sixth lens element may both be aspherical. Therefore, by utilizing the characteristics of the aspherical lens surface, it is advantageous to effectively correct off-axis aberrations, such as distortions of the photographing optical lens assembly, and reduce the overall path length of the photographing optical lens assembly.

[0025] At least one of the object-side and image-side surfaces of the sixth lens element may have at least one inflection point. Therefore, it is advantageous to correct off-axis aberrations such as the field curvature of the photographing optical lens assembly while reducing the overall path length of the photographing optical lens assembly. Furthermore, the image-side surface of the sixth lens element may have at least one inflection point. Reference is made to Fig. 33, which shows a schematic view of the inflection points P on the lens surfaces according to the first embodiment of the present disclosure. In Fig.33, the object-side surface of the first lens element E1, the object-side surface of the third lens element E3, and the image-side surface of the sixth lens element E6 each have one inflection point P, and the image-side surface of the fifth lens element E5 and the object-side surface of the sixth lens element E6 each have two inflection points P. The first embodiment of the present disclosure shown in Fig. 33 is merely exemplary. Each of the lens elements in various embodiments of the present disclosure may have one or more inflection points.

[0026] The image-side surface of the sixth lens element may have at least one critical point in an off-axis region thereof. Therefore, it is advantageous for correcting off-axis aberrations such as the field curvature of the photographing optical lens assembly while reducing the overall path length of the photographing optical lens assembly. Reference is made to Fig. 33, which shows a schematic view of the critical points C on the lens surfaces according to the first embodiment of the present disclosure. In Fig. 33, the object-side surface of the first lens element E1, the object-side surface of the sixth lens element E6, and the image-side surface of the sixth lens element E6 each have a critical point C in an off-axis region thereof. Fig.The first embodiment of the present disclosure shown in Figure 33 is merely exemplary. Each of the lens elements in various embodiments of the present disclosure may have one or more critical points in an off-axis region thereof.

[0027] When an axial distance between the object-side surface of the first lens element and the image-side surface of the sixth lens element is TD and a focal length of the photographing optical lens assembly is f, the following condition can be satisfied: 1.40 < TD / f < 6.00. Therefore, it is advantageous to balance the total path length of the photographing optical lens assembly and control the field of view to meet the product application requirements. In addition, the following condition can also be satisfied: 2.20 < TD / f < 4.50. In addition, the following condition can also be satisfied: 2.50 < TD / f < 3.90. In addition, the following condition can also be satisfied: 2.50 < TD / f < 3.50. In addition, the following condition can also be satisfied: 2.51 ≤ TD / f ≤ 3.47.

[0028] When the focal length of the photographing optical lens assembly is f and the focal length of the fifth lens element is f5, the following condition can be satisfied: -0.80 < f / f5 < 0.20. Therefore, it is beneficial to equalize the refractive power distribution of the photographing optical lens assembly to achieve better image quality. Furthermore, the following condition can also be satisfied: -0.65 ≤ f / f5 ≤ -0.16.

[0029] When the axial distance between the object-side surface of the first lens element and the image-side surface of the sixth lens element is TD, and an axial distance between the fifth lens element and the sixth lens element is T56, the following condition can be satisfied: 1.00 < TD / T56 < 35.00. Therefore, it is advantageous to adjust the spatial configuration of the photographing optical lens assembly so that the size distribution of the photographing optical lens assembly is balanced. In addition, the following condition can also be satisfied: 1.00 < TD / T56 < 19.00. Furthermore, the following condition can also be satisfied: 4.0 < TD / T56 < 13.0. In addition, the following condition can also be satisfied: 6.48 ≤ TD / T56 ≤ 10.05.

[0030] When an axial distance between the object-side surface of the first lens element and the image surface is TL and a maximum image height of the photographing optical lens assembly (which may be half a diagonal length of an effective photosensitive area of ​​an image sensor) is ImgH, the following condition can be satisfied: 0.50 < TL / lmgH < 4.00. Therefore, it is advantageous to find a balance between reducing the total path length and increasing the image surface to meet various applications. In addition, the following condition can also be satisfied: 0.90 < TL / lmgH < 3.50. In addition, the following condition can also be satisfied: 1.5 < TL / lmgH < 3.50. In addition, the following condition can also be satisfied: 2.0 < TL / lmgH < 3.00. In addition, the following condition can also be met: 2.33 ≤ TL / lmgH ≤ 3.20.

[0031] When the focal length of the photographing optical lens assembly is f and the combined focal length of the fourth lens element and the fifth lens element is f45, the following condition can be satisfied: 0.45 < f / f45 < 1.20. Therefore, it is advantageous to adjust the total refractive power of the fourth lens element and the fifth lens element to reduce the back focal length. In addition, the following condition can also be satisfied: 0.45 < f / f45 < 1.00. Furthermore, the following condition can also be satisfied: 0.71 ≤ f / f45 ≤ 0.92.

[0032] When the axial distance between the third lens element and the fourth lens element is T34, and the axial distance between the fifth lens element and the sixth lens element is T56, the following condition can be satisfied: 0.70 < T56 / T34 < 20.00. Therefore, it is advantageous to effectively control the spatial arrangement of the photographing optical lens assembly to reduce the total path length of the photographing optical lens assembly. In addition, the following condition can also be satisfied: 1.00 < T56 / T34 < 10.00. Furthermore, the following condition can also be satisfied: 3.21 ≤ T56 / T34 ≤ 7.08.

[0033] When an axial distance between the first lens element and the second lens element is T12 and an axial distance between the second lens element and the third lens element is T23, the following condition can be satisfied: T23 < T12. Therefore, it is advantageous to adjust the ratio of the distance between the first lens element and the second lens element and the distance between the second lens element and the third lens element so as to increase the field of view.

[0034] When a radius of curvature of the object-side surface of the second lens element is R3 and a radius of curvature of the image-side surface of the second lens element is R4, the following condition can be satisfied: -5.00 < (R3+R4) / (R3-R4). Therefore, it is advantageous to control the lens shape of the second lens element so as to correct aberrations of the photographing optical lens assembly and maintain good image quality. In addition, the following condition can also be satisfied: 1.00 < (R3+R4) / (R3-R4) < 80.00. Furthermore, the following condition can also be satisfied: 1.00 < (R3+R4) / (R3-R4) < 40.00. Furthermore, the following condition can also be satisfied: 2.58 ≤ (R3+R4) / (R3-R4) ≤ 15.98.

[0035] When the focal length of the photographing optical lens assembly is f, a focal length of the first lens element is f1, a focal length of the second lens element is f2, the focal length of the third lens element is f3, a focal length of the fourth lens element is f4, the focal length of the fifth lens element is f5, a focal length of the sixth lens element is f6, a focal length of the j-th lens element is fj, and a maximum absolute value of f / fj is |f / fj|max, the following condition can be satisfied: |f / fjlmax < 1.50, where j = 1, 2, 3, 4, 5, or 6. Therefore, it is advantageous to equalize the refractive power distribution of the photographing optical lens assembly, effectively reduce the refractive change of the incident light, and correct aberrations such as spherical aberration to improve image quality. In addition, the following condition can also be met: 0.70 < |f / fj|max < 1.30, where j = 1, 2, 3, 4, 5 or 6.

[0036] When the focal length of the photographing optical lens assembly is f and the focal length of the third lens element is f3, the following condition can be satisfied: -1.50 < f / f3 < 0.30. Therefore, it is advantageous to adjust the light path control capability of the third lens element so as to balance the refractive power distribution of the photographing optical lens assembly and correct aberrations such as spherical aberration. In addition, the following condition can also be satisfied: -1.00 < f / f3 < 0.20. In addition, the following condition can also be satisfied: -0.50 < f / f3 < 0.10. In addition, the following condition can also be satisfied: -0.36 ≤ f / f3 ≤ 0.04.

[0037] When the maximum field of view of the photographing optical lens assembly is FOV, the following condition may be met: 110.0 degrees < FOV. Therefore, it is advantageous to adjust the field of view to achieve a wider image pickup angle. Furthermore, the following condition may also be met: 125.0 degrees < FOV.

[0038] When the aperture number of the photographing optical lens assembly is Fno, the following condition can be satisfied: 1.50 < Fno < 4.00. Therefore, it is advantageous to control the aperture size to meet the clear aperture requirements of the application device and ensure the amount of incident light of the photographing optical lens assembly to increase image brightness. Furthermore, the following condition can also be satisfied: 1.80 < Fno < 2.80.

[0039] When Vmin is a minimum value among the Abbe numbers of all lens elements of the photographing optical lens assembly, the following condition can be satisfied: 5.0 < Vmin < 21.0. Therefore, it is beneficial to adjust the material distribution of the lens elements and correct the chromatic aberration generated by the photographing optical lens assembly to improve image quality. Furthermore, the following condition can also be satisfied: 14.0 < Vmin < 20.0.

[0040] When the focal length of the photographing optical lens assembly is f, a radius of curvature of the object-side surface of the sixth lens element is R11, and a radius of curvature of the image-side surface of the sixth lens element is R12, the following condition can be satisfied: f / |R11|+f / |R12| < 4.00. Therefore, it is advantageous to control the curvature of the surface of the sixth lens element to reduce manufacturing difficulties and prevent ghosting. In addition, the following condition can also be satisfied: f / |R11|+f / |R12| < 2.0.

[0041] When a maximum effective radius of the object-side surface of the first lens element is Y1R1 and a maximum effective radius of the image-side surface of the sixth lens element is Y6R2, the following condition can be satisfied: 0.60 < Y1R1 / Y6R2 < 8.00. Therefore, it is advantageous to effectively control the ratio of the effective radii of the lens elements to enlarge the field of view. In addition, the following condition can also be satisfied: 0.8 < Y1R1 / Y6R2 < 2.5. Reference is made to Fig. 32, which shows a schematic view of Y1R1 and Y6R2 according to the first embodiment of the present disclosure.

[0042] When the axial distance between the image-side surface of the sixth lens element and the image surface is BL, and the axial distance between the object-side surface of the first lens element and the image surface is TL, the following condition can be satisfied: BL / TL < 0.22. Therefore, it is advantageous to reduce the back focal length of the photographing optical lens assembly to control the total path length of the photographing optical lens assembly.

[0043] According to the present disclosure, the photographing optical lens assembly may further include an aperture stop. When an axial distance between the aperture stop 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, the following condition may be satisfied: 0.30 < SL / TL < 0.80. Therefore, it is advantageous to balance the position of the aperture stop to control the size and field of view of the photographing optical lens assembly. Furthermore, the following condition may also be satisfied: 0.40 < SL / TL < 0.60.

[0044] When the focal length of the photographing optical lens assembly is f and the combined focal length of the first lens element and the second lens element is f12, the following condition can be satisfied: f / f12 < 0.75. Therefore, it is advantageous to adjust the total refractive power of the first lens element and the second lens element to balance the refractive power distribution of the photographing optical lens assembly. Furthermore, the following condition can also be satisfied: 0.40 < f / f12 < 0.50.

[0045] When the axial distance between the first lens element and the second lens element is T12, and the axial distance between the second lens element and the third lens element is T23, the following condition can be satisfied: T23 / T12 < 0.80. Therefore, it is advantageous to adjust the ratio of the lens pitch between the first and second lens elements to the lens pitch between the second and third lens elements to increase the field of view. Furthermore, the following condition can also be satisfied: T23 / T12 < 0.20.

[0046] When the Abbe number of the third lens element is V3 and the Abbe number of the fifth lens element is V5, the following condition can be satisfied: 10.0 < V3 + V5 < 80.0. Therefore, it is advantageous to balance the ability of the photographing optical lens assembly to deflect various light bands to correct chromatic aberration, and to increase the density difference between the materials of the third and fifth lens elements and the air to improve the ability to control the light path in a limited space. In addition, the following condition can also be satisfied: 20.0 < V3 + V5 < 55.0.

[0047] When a maximum value is less than the refractive indices of all lens elements of the photographing optical lens assembly Nmax, the following condition can be satisfied: 1,660 < Nmax. Therefore, it is advantageous for the control of lens materials to reduce the manufacturing difficulties and to increase the marketability of the photographing optical lens assembly. In addition, the following condition can also be satisfied: 1,660 < Nmax < 1,800.

[0048] A minimum value among maximum effective radii of all lens surfaces of the photographing optical lens assembly is Ymin, and a maximum effective radius of any one of the object-side surface of the third lens element, the image-side surface of the third lens element, the object-side surface of the fourth lens element, and the image-side surface of the fourth lens element may be Ymin. Therefore, it is advantageous to position the aperture stop while balancing the amount of incident light and the size of the photographing optical lens assembly.

[0049] If the axial distance between the third lens element and the fourth lens element is T34 and the central thickness of the second lens element is CT2, the following condition can be satisfied: T34 < CT2. Therefore, it is advantageous to control the spatial distribution of the photographing optical lens assembly to reduce sensitivity and improve the performance of the photographing optical lens assembly.

[0050] If the axial distance between the second lens element and the third lens element is T23 and the axial distance between the fifth lens element and the sixth lens element is T56, the following condition can be satisfied: T23 < T56. Therefore, it is advantageous to adjust the ratio of the lens distance between the second and third lens elements to the lens distance between the fifth and sixth lens elements to adjust the size distribution of the photographing optical lens assembly.

[0051] When the maximum field of view of the photographing optical lens assembly is FOV, the following condition can be satisfied: -1.80 < tan(FOV) < 0. Therefore, it is beneficial to enlarge the field of view to expand the application range of the product.

[0052] When the axial distance between the object-side surface of the first lens element and the image-side surface of the sixth lens element is TD and the entrance pupil diameter of the photographing optical lens assembly is EPD, the following condition can be satisfied: 5.00 < TD / EPD < 8.50. Therefore, it is advantageous to reduce the total path length of the photographing optical lens assembly and use a large aperture stop to balance the image brightness and the size of the photographing optical lens assembly. In addition, the following condition can also be satisfied: 6.00 <TD / EPD<8,00.

[0053] When a maximum value among the axial distances between each of all adjacent lens elements of the photographing optical lens assembly is ATmax and the focal length of the photographing optical lens assembly is f, the following condition can be satisfied: 0 < ATmax / f < 2.50. Therefore, it is advantageous to adjust the distribution of lens elements in the photographing optical lens assembly to increase yield and reduce assembly errors. In addition, the following condition can also be satisfied: 0.40 < ATmax / f < 1.30.

[0054] When a maximum effective radius of the object-side surface of the second lens element is Y2R1 and a maximum effective radius of the image-side surface of the fifth lens element is Y5R2, the following condition can be satisfied: 0.70 < Y2R1 / Y5R2 < 8.00. Therefore, it is advantageous to control the ratio of the effective radii of the lens elements to enlarge the field of view. In addition, the following condition can also be satisfied: 1.10 < Y2R1 / Y5R2 < 2.00. Reference is made to Fig. 32, which shows a schematic view of Y2R1 and Y5R2 according to the first embodiment of the present disclosure.

[0055] According to the present disclosure, the above features and conditions can be used in numerous combinations to achieve corresponding effects.

[0056] According to the present disclosure, the lens elements of the photographing optical lens assembly can be made of either glass or plastic material. When the lens elements are made of glass material, the refractive power distribution of the photographing optical lens assembly can be more flexible and the influence on the imaging caused by temperature changes in the external environment can be reduced. The glass lens element can be manufactured either by grinding or by molding. When the lens elements are made of plastic material, the manufacturing costs can be effectively reduced. In addition, the surfaces of each lens element can be designed to be spherical or aspherical. Spherical lens elements are easy to manufacture.The design of aspherical lens elements allows for more control variables to eliminate aberrations and reduce the required number of lens elements, effectively shortening the overall path length of the photographing optical lens assembly. Furthermore, the aspherical surfaces can be manufactured using plastic injection molding or glass molding.

[0057] According to the present disclosure, an aspheric lens surface means that the lens surface has an aspherical shape over all or part of its optically effective area.

[0058] According to the present disclosure, one or more of the lens element materials may optionally include an additive that creates light absorption and interference effects and alters the transmittance of the lens elements in a specific wavelength range to reduce unwanted stray light or color variations. For example, the additive may optionally filter out light in the wavelength range of 600 nm to 800 nm to reduce excessive red light and / or near-infrared light; or it may optionally filter out light in the wavelength range of 350 nm to 450 nm to prevent excessive blue light and / or near-ultraviolet light from interfering with the final image. The additive may be homogeneously blended with a plastic material used in the manufacture of a blended-material lens element by injection molding.In addition, the additive can be applied to the lens surfaces to achieve the above-mentioned effects.

[0059] According to the present disclosure, each of an object-side surface and an image-side surface has a paraxial region and an off-axial region. The paraxial region refers to the region of the surface in which light rays move close to the optical axis, and the off-axial region refers to the region of the surface that is removed from the paraxial region. In particular, unless otherwise specified, when the lens element has a convex surface, it means that the surface is convex in the paraxial region thereof; when the lens element has a concave surface, it means that the surface is concave in the paraxial region thereof. If a region of the refractive power or the focal point of a lens element is not defined, this also means that the region of the refractive power or the focal point of the lens element is in the paraxial region thereof.

[0060] According to the present disclosure, an inflection point is a point on the surface of the lens element where the surface changes from concave to convex or vice versa. A critical point is an off-axis point on the lens surface where its tangent is perpendicular to the optical axis.

[0061] According to the present disclosure, the image surface of the photographing optical lens assembly may be flat or curved based on the corresponding image sensor, in particular, a curved surface that is concave and directed toward the object side of the photographing optical lens assembly.

[0062] According to the present disclosure, an image correction unit, such as an image field flattener, can be optionally arranged between the lens element that is closest to the image side of the imaging optical lens assembly along the optical path and the image surface for correcting aberrations, such as field curvature. The optical properties of the image correction unit, such as curvature, thickness, refractive index, position, and surface shape (convex or concave surface with spherical, aspherical, diffractive, or Fresnel types), can be adjusted according to the design of the image capturing unit. Generally, a preferred image correction unit is, for example, a thin transparent element with a concave object-side surface and a flat image-side surface, and the thin transparent element is arranged near the image surface.

[0063] According to the present disclosure, at least one light folding element, such as a prism or a mirror, can be optionally provided between an imaged object and the image surface on the imaging optical path, and the surface shape of the prism or mirror can be planar, spherical, aspherical, or a free-form surface, so that the photographing optical lens assembly can be more flexible in spatial arrangement, and therefore the dimensions of an electronic device are not limited by the total path length of the photographing optical lens assembly. In particular, Fig. 34 and Fig. 35. Fig. 34 shows a schematic view of a configuration of a light folding element in a photographing optical lens assembly according to an embodiment of the present disclosure, and Fig.35 shows a schematic view of another configuration of a light folding element in a photographing optical lens assembly according to an embodiment of the present disclosure. In Fig. 34 and Fig. 35, the photographing optical lens assembly may have, in the order from an imaged object (not shown in the figures) to an image surface IMG along an optical path, a first optical axis OA1, a light folding element LF, and a second optical axis OA2. The light folding element LF may be arranged between the imaged object and a lens group LG of the photographing optical lens assembly, as shown in Fig. 34, or arranged between a lens group LG and the image surface IMG of the photographing optical lens assembly, as shown in Fig. 35. Furthermore, Fig.36, which shows a schematic view of a configuration with two light folding elements in a photographing optical lens assembly according to an embodiment of the present disclosure. In Fig.36, the photographing optical lens assembly may have, in the order from an imaged object (not shown in the figure) to an image surface IMG along an optical path, a first optical axis OA1, a first light folding element LF1, a second optical axis OA2, a second light folding element LF2, and a third optical axis OA3. The first light folding element LF1 is arranged between the imaged object and a lens group LG of the photographing optical lens assembly, the second light folding element LF2 is arranged between the lens group LG and the image surface IMG of the photographing optical lens assembly, and the propagation direction of the light on the first optical axis OA1 may be the same direction as the propagation direction of the light on the third optical axis OA3, as shown in Fig.36. The photographing optical lens assembly may optionally be provided with three or more light folding elements, and the present disclosure is not limited to the type, number, and position of the light folding elements of the embodiments disclosed in the above-mentioned figures.

[0064] According to the present disclosure, the photographing optical lens assembly may include at least one diaphragm, such as an aperture diaphragm, a glare diaphragm, or a field diaphragm. The glare diaphragm or field diaphragm is adjusted to eliminate stray light, thereby improving image quality.

[0065] According to the present disclosure, an aperture stop may be configured as a front stop or a center stop. A front stop disposed between an imaged object and the first lens element can create a larger distance between an exit pupil of the photographing optical lens assembly and the image surface to produce a telecentric effect, thereby improving the image sensor efficiency of an image sensor (e.g., CCD or CMOS). A center stop disposed between the first lens element and the image surface is advantageous for increasing the viewing angle of the photographing optical lens assembly, thereby providing a wider field of view for the same.

[0066] According to the present disclosure, the photographing optical lens assembly may include an aperture control unit. The aperture control unit may be a mechanical component or a light modulator that can control the size and shape of the aperture through electricity or electrical signals. The mechanical component may include a movable element, such as a blade assembly or a light-shielding film. The light modulator may include a shielding element, such as a filter, an electrochromic material, or a liquid crystal layer. The aperture control unit controls the amount of incident light or the exposure time to enhance the ability to adjust image quality. Furthermore, the aperture control unit may be the aperture stop of the present disclosure, which changes the f-number to achieve different imaging effects, such as depth of field or lens aperture.

[0067] According to the present disclosure, the photographing optical lens assembly may include one or more optical elements for limiting the shape of light passing through the photographing optical lens assembly. Each optical element may be, but need not be, a filter, a polarizer, etc., and each optical element may be, but need not be, a single-piece element, a composite component, a thin film, etc. The optical element may be located on the object side or the image side of the photographing optical lens assembly, or between any two adjacent lens elements to transmit light in a specific shape to meet application requirements.

[0068] According to the present disclosure, the photographing optical lens assembly may include at least one optical lens element, an optical element, or a substrate having at least one surface with an anti-reflection layer. The anti-reflection layer can effectively reduce stray light caused by light reflection at the interface. The anti-reflection layer may be disposed in an optically ineffective region of an object-side surface or an image-side surface of the optical lens element, or a connecting surface between the object-side surface and the image-side surface. The optical element may be a light-blocking member, an annular spacer, a housing member, a cover glass, a cobalt glass, a filter, a color filter, an optical path folding member (e.g., a reflective element), a prism, a mirror, etc.The carrier may be a base for supporting a lens assembly, a microlens disposed on an image sensor, a substrate surrounding the image sensor, a glass plate for protecting the image sensor, etc.

[0069] According to the present disclosure, the object side and the image side are defined according to the direction of the optical axis, and the axial optical data is calculated along the optical axis. When the optical axis is deflected by a light folding element, the axial optical data is also calculated along the deflected optical axis.

[0070] In accordance with the above description of the present disclosure, the following specific embodiments are provided for further explanation. 1. Embodiment

[0071] Fig. 1 is a schematic view of an image acquisition unit according to the first embodiment of the present disclosure. Fig.Figure 2 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the first embodiment. Fig.1, the image capture unit 1 includes the photographing optical lens assembly (its reference numeral is omitted) of the present disclosure and an image sensor IS. The photographing optical lens assembly includes, in order from an object side to an image side along an optical path, a first lens element E1, a stop S1, a second lens element E2, a third lens element E3, an aperture stop ST, a fourth lens element E4, a fifth lens element E5, a stop S2, a sixth lens element E6, a filter E7, and an image surface IMG. The photographing optical lens assembly includes six lens elements (E1, E2, E3, E4, E5, and E6), and no additional lens element is disposed between each of the adjacent six lens elements.

[0072] The first lens element E1 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The first lens element E1 is made of glass material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the first lens element E1 has an inflection point. The object-side surface of the first lens element E1 has a critical point in an off-axis region thereof.

[0073] The second lens element E2 with positive refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The second lens element E2 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical.

[0074] The third lens element E3 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The third lens element E3 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the third lens element E3 has an inflection point.

[0075] The fourth lens element E4 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical.

[0076] The fifth lens element E5 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The fifth lens element E5 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The image-side surface of the fifth lens element E5 has two inflection points.

[0077] The sixth lens element E6 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the sixth lens element E6 has two inflection points. The image-side surface of the sixth lens element E6 has one inflection point. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof. The image-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof.

[0078] The filter E7 is made of glass and is located between the sixth lens element E6 and the image surface IMG. It does not affect the focal length of the photographing optical lens assembly. The image sensor IS is located on or near the image surface IMG of the photographing optical lens assembly.

[0079] In this embodiment, a minimum value among the maximum effective radii of all the lens surfaces of the photographing optical lens assembly is Ymin, and a maximum effective radius of the image-side surface of the third lens element E3 is Ymin.

[0080] The equation of the profiles of the aspherical surfaces of the above-mentioned lens elements of the first embodiment is expressed as follows: X(Y)=(Y2 / R) / (1+sqrt(1−(1+k)×(Y / R)2))+∑i(Ai)×(Yi) , where, X is the displacement parallel to an optical axis from an axial vertex on the aspherical surface to a point at a distance of Y from the optical axis on the aspherical surface; Y is the vertical distance from the point on the aspherical surface to the optical axis; R is the radius of curvature; k is the conical coefficient; and Ai is the i-th aspherical coefficient, and in the embodiments, i may be 4, 6, 8, 10, 12, 14, 16, 18 and 20, but is not limited thereto.

[0081] In the photographing optical lens assembly of the image sensing unit 1 according to the first embodiment, when a focal length of the photographing optical lens assembly is f, an F-number of the photographing optical lens assembly is Fno, and half of a maximum field of view of the photographing optical lens assembly is HFOV, these parameters have the following values: f = 1.91 millimeters (mm), Fno = 2.40, and HFOV = 72.5 degrees (degrees).

[0082] When the maximum field of view of the photographing optical lens assembly is FOV, the following condition is satisfied: FOV = 144.9 degrees

[0083] When an axial distance between the object-side surface of the first lens element E1 and the image surface IMG is TL and a maximum image height of the photographing optical lens assembly is ImgH, the following condition is satisfied: TL / lmgH = 2.78.

[0084] When the maximum field of view of the photographing optical lens assembly is FOV, the following condition is satisfied: tan(FOV) = -0.70.

[0085] When an axial distance between the object-side surface of the first lens element E1 and the image-side surface of the sixth lens element E6 is TD and an entrance pupil diameter of the photographing optical lens assembly is EPD, the following condition is satisfied: TD / EPD = 7.01.

[0086] When the axial distance between the object-side surface of the first lens element E1 and the image-side surface of the sixth lens element E6 is TD and the focal length of the photographing optical lens assembly is f, the following condition is satisfied: TD / f = 2.92.

[0087] When the focal length of the photographing optical lens assembly is f, a focal length of the first lens element E1 is f1, a focal length of the second lens element E2 is f2, a focal length of the third lens element E3 is f3, a focal length of the fourth lens element E4 is f4, a focal length of the fifth lens element E5 is f5, a focal length of the sixth lens element E6 is f6, a focal length of the j-th lens element is fj, and a maximum absolute value of f / fj is |f / fj|max, the following condition is satisfied: |f / fj|max = 1.24, where j = 1, 2, 3, 4, 5, or 6. In this embodiment, an absolute value of f / f4 (ie, |f / f4|) is greater than |f / f1|, |f / f2|, |f / f3|, |f / f5| and |f / f6|, and |f / fj|max is equal to the absolute value of f / f4.

[0088] When the focal length of the photographing optical lens assembly is f and the focal length of the third lens element E3 is f3, the following condition is satisfied: f / f3 = 0.03.

[0089] When the focal length of the photographing optical lens assembly is f and the focal length of the fifth lens element E5 is f5, the following condition is satisfied: f / f5 = -0.65.

[0090] When the focal length of the photographing optical lens assembly is f and the combined focal length of the first lens element E1 and the second lens element E2 is f12, the following condition is satisfied: f / f12 = -0.21.

[0091] When the focal length of the photographing optical lens assembly is f and a compound focal length of the fourth lens element E4 and the fifth lens element E5 is f45, the following condition is satisfied: f / f45 = 0.78.

[0092] When the focal length of the photographing optical lens assembly is f, a radius of curvature of the object-side surface of the sixth lens element E6 is R11, and a radius of curvature of the image-side surface of the sixth lens element E6 is R12, the following condition is satisfied: f / |R11|+f / |R12| = 1.56.

[0093] When a radius of curvature of the object-side surface of the second lens element E2 is R3 and a radius of curvature of the image-side surface of the second lens element E2 is R4, the following condition is satisfied: (R3+R4) / (R3-R4) = 7.61

[0094] When a maximum value among axial distances between each of all adjacent lens elements of the photographing optical lens assembly is ATmax and the focal length of the photographing optical lens assembly is f, the following condition is satisfied: ATmax / f = 0.55. In this embodiment, an axial distance between the first lens element E1 and the second lens element E2 is larger than axial distances between any other two adjacent lens elements in the photographing optical lens assembly, and therefore, ATmax is equal to the axial distance between the first lens element E1 and the second lens element E2.

[0095] When an axial distance between the image-side surface of the sixth lens element E6 and the image surface IMG is BL and the axial distance between the object-side surface of the first lens element E1 and the image surface IMG is TL, the following condition is satisfied: BL / TL = 0.17.

[0096] When an axial distance between the aperture stop ST and the image surface IMG is SL and the axial distance between the object-side surface of the first lens element E1 and the image surface IMG is TL, the following condition is satisfied: SL / TL = 0.53.

[0097] When the axial distance between the object-side surface of the first lens element E1 and the image-side surface of the sixth lens element E6 is TD, and the axial distance between the fifth lens element E5 and the sixth lens element E6 is T56, the following condition is satisfied: TD / T56 = 8.85. In this embodiment, the axial distance between two adjacent lens elements is a distance in a paraxial region between two adjacent lens surfaces of the two adjacent lens elements.

[0098] When the axial distance between the first lens element E1 and the second lens element E2 is T12 and an axial distance between the second lens element E2 and the third lens element E3 is T23, the following condition is satisfied: T23 / T12 = 0.028.

[0099] When an axial distance between the third lens element E3 and the fourth lens element E4 is T34 and the axial distance between the fifth lens element E5 and the sixth lens element E6 is T56, the following condition is satisfied: T56 / T34 = 4.10.

[0100] When a minimum value among Abbe numbers of all lens elements of the photographing optical lens assembly is Vmin, the following condition is satisfied: Vmin = 18.2. In this embodiment, an Abbe number of the fifth lens element E5 is smaller than Abbe numbers of the other lens elements in the photographing optical lens assembly, and therefore, Vmin is equal to the Abbe number of the fifth lens element E5.

[0101] If an Abbe number of the third lens element E3 is V3 and the Abbe number of the fifth lens element E5 is V5, the following condition is satisfied: V3+V5 = 38.6.

[0102] When a maximum value among refractive indices of all lens elements of the photographing optical lens assembly is Nmax, the following condition is satisfied: Nmax = 1.680. In this embodiment, a refractive index of the fifth lens element E5 is larger than the refractive indices of the other lens elements in the photographing optical lens assembly, and therefore, Nmax is equal to the refractive index of the fifth lens element E5.

[0103] When a maximum effective radius of the object-side surface of the first lens element E1 is Y1R1 and a maximum effective radius of the image-side surface of the sixth lens element E6 is Y6R2, the following condition is satisfied: Y1R1 / Y6R2 = 1.42.

[0104] When a maximum effective radius of the object-side surface of the second lens element E2 is Y2R1 and a maximum effective radius of the image-side surface of the fifth lens element E5 is Y5R2, the following condition is satisfied: Y2R1 / Y5R2 = 1.29.

[0105] When the axial distance between the first lens element E1 and the second lens element E2 is T12, the axial distance between the second lens element E2 and the third lens element E3 is T23, the axial distance between the third lens element E3 and the fourth lens element E4 is T34, the axial distance between the fifth lens element E5 and the sixth lens element E6 is T56, and a central thickness of the second lens element E2 is CT2, the following conditions are satisfied: T23 < T12; T34 < CT2; and T23 < T56.

[0106] The detailed optical data of the first embodiment are shown in Table 1A and the data of the aspherical surfaces are shown in Table 1B below. TABLE 1A 1. Embodiment f = 1.91 mm, Fno = 2.40, HFOV = 72.5 degrees Surface # radius of curvature thickness material index Abbe # Focal length 0 object infinity infinity 1 Lens 1 -14,3721 (ASP) 0,535 Glass 1,639 44,9 -3,62 2 2,8028 (ASP) 0,718 3 aperture Plano 0,340 4 Lens 2 -2,5761 (ASP) 0,866 plastic 1,544 56,0 10,36 5 -1,9776 (ASP) 0,030 6 Lens 3 1,7092 (ASP) 0,463 plastic 1,660 20,4 61,04 7 1,5927 (ASP) 0,211 8 Aperture diaphragm Plano -0,057 9 Lens 4 2,3313 (ASP) 0,897 plastic 1,544 56,0 1,55 10 -1,1383 (ASP) 0,039 11 Lens 5 -95,0841 (ASP) 0,366 plastic 1,680 18,2 -2,96 12 2,0619 (ASP) 0,223 13 aperture Plano 0,408 14 Lens 6 2,9255 (ASP) 0,543 plastic 1,544 56,0 -18,35 15 2,1144 (ASP) 0,400 16 filter Plano 0,300 Glass 1,517 64,2 - 17 Plano 0,480 18 Picture Plano - Note: Reference wavelength is 587.6 nm (d-line). An effective radius of the aperture S1 (surface 3) is 1.342 mm. An effective radius of the aperture S2 (surface 13) is 1.117 mm. TABLE 1B Aspherical coefficients Surface # 1 2 4 5 6 7 k = -8,41722E+01 6,51575E-01 -4,75516E+00 -8,11289E+00 -8,19736E+00 -6,62776E+00 A4 = 1,19009E-02 1,27946E-02 -4,31980E-02 2,68298E-02 1,13310E-01 -1,97220E-01 A6 = -6,05232E-04 -7,50497E-04 6,29029E-02 -2,67820E-02 -1,92854E-01 1,13599E+00 A8 = -5,29441E-05 3,87576E-03 -4,45350E-02 4,63024E-02 2,52276E-01 -5,61082E+00 A10 = 8,28545E-06 -7,10745E-04 1,42837E-02 -6,68369E-02 -5,95723E-01 1,82544E+01 A12 = -1,08847E-07 -1,18257E-12 -1,97424E-03 3,58518E-02 6,30614E-01 -3,18019E+01 A14 = 4,23754E-10 - 8,35400E-06 -6,51584E-03 -2,25400E-01 2,41624E+01 A16 = - - - - - 7,93685E-13 Surface # 9 10 11 12 14 15 k = -5,07675E-02 -5,84930E-01 8,87179E+01 -2,11485E+01 -7,49124E-01 -5,59565E-01 A4 = -7,07072E-02 -1,89709E-01 -5,88315E-01 -6,97035E-02 -2,72645E-01 -2,41134E-01 A6 = 1,62812E-01 1,51934E+00 2,44595E+00 1,69364E-01 3,01664E-01 1,72002E-01 A8 = 2,11144E-01 -6,26840E+00 -1,03646E+01 -3,38758E-01 -3,76303E-01 -1,28657E-01 A10 = -3,23449E+00 1,29427E+01 2,57260E+01 3,85838E-01 3,70541E-01 7,62496E-02 A12 = 7,44997E+00 -1,40957E+01 -3,92556E+01 -2,49813E-01 -2,42594E-01 -3,32265E-02 A14 = -4,97928E+00 6,39709E+00 3,26502E+01 1,16658E-01 1,00769E-01 1,01440E-02 A16 = 7,93850E-13 7,93850E-13 -1,11747E+01 -3,26256E-02 -2,55314E-02 -2,05690E-03 A18 = - - 2,84592E-14 2,84592E-14 3,60922E-03 2,45059E-04 A20 = - - - - -2,18835E-04 -1,27733E-05

[0107] Table 1A shows the radius of curvature, thickness, and focal length in millimeters (mm). Surface numbers 0-18 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 aspherical surface profile equation. A4-A20 represent the aspherical coefficients ranging from the 4th to the 20th order. The tables shown below for each embodiment are the corresponding schematic parameter and aberration curves, and the definitions of the tables are the same as in Table 1A and Table 1B of the first embodiment. Therefore, no further explanation is given in this regard. 2. Embodiment

[0108] Fig. 3 is a schematic view of an image acquisition unit according to the second embodiment of the present disclosure. Fig. Figure 4 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the second embodiment. Fig.3, the image capture unit 2 includes the photographing optical lens assembly (its reference numeral is omitted) of the present disclosure and an image sensor IS. The photographing optical lens assembly includes, in order from an object side to an image side along an optical path, a first lens element E1, a stop S1, a second lens element E2, a third lens element E3, an aperture stop ST, a fourth lens element E4, a fifth lens element E5, a stop S2, a sixth lens element E6, a filter E7, and an image surface IMG. The photographing optical lens assembly includes six lens elements (E1, E2, E3, E4, E5, and E6), and no additional lens element is disposed between each of the adjacent six lens elements.

[0109] The first lens element E1 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The first lens element E1 is made of glass material and has an object-side surface and an image-side surface, both of which are aspherical.

[0110] The second lens element E2 with positive refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The second lens element E2 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the second lens element E2 has an inflection point. The image-side surface of the second lens element E2 has an inflection point.

[0111] The third lens element E3 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The third lens element E3 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the third lens element E3 has an inflection point.

[0112] The fourth lens element E4 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical.

[0113] The fifth lens element E5 with negative refractive power has an object-side surface that is convex in its paraxial region, and an image-side surface that is concave in its paraxial region. The fifth lens element E5 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the fifth lens element E5 has an inflection point. The image-side surface of the fifth lens element E5 has two inflection points. The object-side surface of the fifth lens element E5 has a critical point in its off-axial region.

[0114] The sixth lens element E6 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the sixth lens element E6 has two inflection points. The image-side surface of the sixth lens element E6 has one inflection point. The image-side surface of the sixth lens element E6 has one critical point in an off-axis region thereof.

[0115] The filter E7 is made of glass and is located between the sixth lens element E6 and the image surface IMG. It does not affect the focal length of the photographing optical lens assembly. The image sensor IS is located on or near the image surface IMG of the photographing optical lens assembly.

[0116] In this embodiment, a minimum value among the maximum effective radii of all the lens surfaces of the photographing optical lens assembly is Ymin, and a maximum effective radius of the image-side surface of the third lens element E3 is Ymin.

[0117] The detailed optical data of the second embodiment are shown in Table 2A and the data of the aspherical surfaces in Table 2B below. TABLE 2A 2. Embodiment f = 1.80 mm, Fno = 2.27, HFOV = 76.4 degrees Surface # radius of curvature thickness material index Abbe # Focal length 0 Object Infinity Infinity 1 Lens 1 33,1808 (ASP) 0,550 Glass 1,697 55,5 -3,10 2 2,0131 (ASP) 0,872 3 Diaphragm Plano 0,350 4 Lens 2 -1,9276 (ASP) 0,654 Plastic 1,544 56,0 13,17 5 -1,7006 (ASP) 0,030 6 Lens 3 1,6037 (ASP) 0,515 Plastic 1,587 28,3 45,69 7 1,5030 (ASP) 0,221 8 Aperture diaphragm Plano -0,079 9 Lens 4 1,9390 (ASP) 0,896 Plastic 1,535 55,9 1,61 10 -1,2918 (ASP) 0,030 11 Lens 5 10,2775 (ASP) 0,288 Plastic 1,680 18,2 -3,27 12 1,8063 (ASP) 0,220 13 Diaphragm Plano 0,405 14 Lens 6 2,0519 (ASP) 0,521 Plastic 1,535 55,9 45,32 15 2,0435 (ASP) 0,400 16 Filter Plano 0,300 Glass 1,517 64,2 - 17 Plano 0,630 18 Image Plano - Note: The reference wavelength is 587.6 nm (d-line). The effective radius of diaphragm S1 (surface 3) is 1.279 mm. The effective radius of diaphragm S2 (surface 13) is 1.109 mm. TABLE 2B Aspherical coefficients Surface # 1 2 4 5 6 7 k= 2,34362E+01 2,11507E-01 -4,78531E+00 -8,16772E+00 -6,18593E+00 -7,23399E+00 A4 = 1,00367E-02 1,70876E-02 -4,86597E-02 -2,68580E-02 1,10957E-01 -5,82808E-02 A6 = -9,84208E-04 -1,62449E-02 8,90240E-02 1,88181E-01 6,34243E-02 -3,18640E-01 A8 = -7,50874E-05 3,03811E-02 -8,36833E-02 -3,54824E-01 -7,01787E-01 3,82356E+00 A10 = 3,86980E-05 -2,45960E-02 4,56890E-02 3,88977E-01 1,44208E+00 -1,96512E+01 A12 = -4,27710E-06 9,35302E-03 -1,59125E-02 -2,44370E-01 -1,78928E+00 5,29248E+01 A14 = 1,79163E-07 -1,39062E-03 2,83168E-03 6,65945E-02 1,04460E+00 -7,33501E+01 A16 = - - - - -1,03039E-01 4,25362E+01 Surface # 9 10 11 12 14 15 k= -3,85912E-01 -1,11984E+00 3,84226E+01 -2,65910E+01 -9,86254E-01 -1,06194E-02 A4 = -4,40986E-02 -1,15446E-01 -5,97049E-01 -2,42866E-02 -2,62298E-01 -2,33778E-01 A6 = 6,87894E-02 1,59068E+00 2,63934E+00 4,40780E-03 2,26981E-01 1,32466E-01 A8 = -8,32275E-01 -8,42220E+00 -1,17741E+01 3,21886E-02 -1,87085E-01 -7,78733E-02 A10 = 5,51433E+00 2,14789E+01 2,99904E+01 -7,12848E-01 1,38808E-01 3,81810E-02 A12 = -1,85172E+01 -3,03778E+01 -4,76076E+01 2,05705E+00 -8,05710E-02 -1,60680E-02 A14 = 2,96374E+01 2,22638E+01 4,48279E+01 -2,54506E+00 3,27179E-02 5,52145E-03 A16 = -1,75664E+01 -6,19898E+00 -2,24888E+01 1,52023E+00 -8,53926E-03 -1,39873E-03 A18 = - - 4,77994E+00 -3,60121E-01 1,28302E-03 2,18166E-04 A20 = - - - - -8,45425E-05 -1,50753E-05

[0118] In the second embodiment, the equation of the aspherical surface profiles of the above-mentioned lens elements is the same as the equation of the first embodiment. The definitions of these parameters, listed in Table 2C below, are also the same as those given in the first embodiment, with corresponding values ​​for the second embodiment, so no further explanation is given in this regard.

[0119] In addition, these parameters can be calculated from Table 2A and Table 2B as the following values ​​and satisfy the following conditions: TABLE 2C Values of optical and physical parameters / Definitions f [mm] 1,80 f / |R11| + f / |R12 1,76 Fno 2,27 (R3 + R4) / (R3 - R4) 15,98 HFOV [Degree] 76,4 ATmax / f 0,68 FOV [Degree] 152,8 BL / TL 0,20 tan(HFOV) 2,79 SL / TL 0,53 TD / EPD -0,51 TD / T56 8,76 f [mm] 6,89 T23 / T12 0,025 TD / f 3,03 T56 / T34 4,40 |f / fj|max 1,12 Vmin 18,2 f / f3 0,04 V3 + V5 46,5 f / f5 -0,55 Nmax 1,697 f / f12 -0,31 Y1R1 / Y6R2 1,45 f / f45 0,74 Y2R1 / Y5R2 1,26 3. Embodiment

[0120] Fig. 5 is a schematic view of an image acquisition unit according to the 3rd embodiment of the present disclosure. Fig.Fig. 6 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the third embodiment. Fig. 5, the image capture unit 3 includes the photographing optical lens assembly (its reference numeral is omitted) of the present disclosure and an image sensor IS. The photographing optical lens assembly includes, in order from an object side to an image side along an optical path, a first lens element E1, a second lens element E2, a third lens element E3, an aperture stop ST, a fourth lens element E4, a fifth lens element E5, a stop S1, a sixth lens element E6, a filter E7, and an image surface IMG. The photographing optical lens assembly includes six lens elements (E1, E2, E3, E4, E5, and E6), and no additional lens element is disposed between each of the adjacent six lens elements.

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

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

[0123] The third lens element E3 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The third lens element E3 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the third lens element E3 has an inflection point. The image-side surface of the third lens element E3 has an inflection point.

[0124] The fourth lens element E4 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The image-side surface of the fourth lens element E4 has an inflection point.

[0125] The fifth lens element E5 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The fifth lens element E5 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The image-side surface of the fifth lens element E5 has an inflection point. The image-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof.

[0126] The sixth lens element E6 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the sixth lens element E6 has three inflection points. The image-side surface of the sixth lens element E6 has one inflection point. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof. The image-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof.

[0127] The filter E7 is made of glass and is located between the sixth lens element E6 and the image surface IMG. It does not affect the focal length of the photographing optical lens assembly. The image sensor IS is located on or near the image surface IMG of the photographing optical lens assembly.

[0128] In this embodiment, a minimum value among maximum effective radii of all lens surfaces of the photographing optical lens assembly is Ymin, and a maximum effective radius of the object-side surface of the fourth lens element E4 is Ymin.

[0129] The detailed optical data of the 3rd embodiment are shown in Table 3A and the data of the aspherical surfaces are shown in Table 3B below. TABLE 3A 3. Embodiment f = 1.82 mm, Fno = 2.33, HFOV = 75.4 Degree Surface # Curvature radius Thickness Material Index Abbe # Focal length 0 Object Infinity Infinity 1 Lens 1 -67,6929 (ASP) 0,550 Plastic 1,534 56,0 -4,89 2 2,7275 (ASP) 1,333 3 Lens 2 -2,4192 (ASP) 1,109 Plastic 1,545 54,8 3,38 4 -1,2152 (ASP) 0,066 5 Lens 3 1,4819 (ASP) 0,383 plastic 1,615 25,3 -6,48 6 0,9738 (ASP) 0,188 7 Aperture diaphragm Plano -0,096 8 Lens 4 1,6177 (ASP) 0,672 plastic 1,544 56,0 1,91 9 -2,4749 (ASP) 0,173 10 Lens 5 -2,5328 (ASP) 0,280 plastic 1,697 16,3 -5,93 11 -6,8356 (ASP) 0,232 12 aperture Plano 0,419 13 Lens 6 3,4585 (ASP) 0,449 plastic 1,669 19,5 -9,54 14 2,1260 (ASP) 0,400 15 filter Plano 0,300 Glass 1,517 64,2 - 16 Plano 0,194 17 Picture Plano - Note: Reference wavelength is 587.6 nm (d-line). An effective radius of the aperture S1 (surface 12) is 1.151 mm. TABLE 3B Aspherical coefficients Surface # 1 2 3 4 5 6 k= -6,19731E+01 2,42291E-01 -1,62677E+00 -6,38010E+00 -5,05694E+00 -5,81214E-01 A4 = -5,03180E-03 -1,07047E-02 -6,23486E-02 -4,11389E-02 1,34247E-01 -7,04715E-01 A6 = 4,64693E-03 7,95486E-03 6,03151E-02 1,79345E-02 1,95783E-01 1,25729E+00 A8 = -1,16826E-03 -1,16410E-03 -3,74726E-02 -7,66784E-03 -1,26892E+00 9,30282E+00 A10 = 1,51525E-04 1,56653E-03 1,55968E-02 6,58316E-03 2,32799E+00 -1,05557E+02 A12 = -1,00181E-05 -9,73848E-04 -3,61806E-03 -3,49196E-03 -2,74075E+00 4,78999E+02 A14 = 2,67984E-07 1,85507E-04 3,51701E-04 7,29302E-04 1,32150E+00 -1,19385E+03 A16 = - - - - - 1,57556E+03 A18 = - - - - - -8,54544E+02 Surface # 8 9 10 11 13 14 k= 1,16084E+00 -1,20745E+01 -3,62201E+01 -9,00000E+01 -2,69083E+01 1,32334E-01 A4 = -1,76467E-01 -2,66644E-01 -6,78731E-01 -1,99347E-01 -2,39794E-01 -3,10448E-01 A6 = 8,78437E-01 4,45578E-01 1,51346E+00 5,76325E-01 7,78653E-02 1,58808E-01 A8 = -1,18375E+00 -5,92583E-01 -3,42002E+00 -3,35168E-01 1,82906E-01 -1,64363E-02 A10 = -2,01921E+00 4,82621E-01 4,26299E+00 -9,91543E-01 -5,28388E-01 -9,57505E-02 A12 = 8,56193E+00 -6,10499E-01 -2,61435E+00 2,55983E+00 7,69476E-01 1,11855E-01 A14 = -8,19633E+00 2,11163E+00 -3,83607E+00 -2,40277E+00 -6,75135E-01 -6,34515E-02 A16 = - - 6,44383E+00 8,34708E-01 3,50120E-01 1,99605E-02 A18 = - - - - -9,78306E-02 -3,29594E-03 A20 = - - - - 1,12924E-02 2,21162E-04

[0130] In the third embodiment, the equation of the aspherical surface profiles of the above-mentioned lens elements is the same as the equation of the first embodiment. The definitions of these parameters, listed in Table 3C below, are also the same as those given in the first embodiment, with corresponding values ​​for the third embodiment, so no further explanation is given in this regard.

[0131] In addition, these parameters can be calculated from Table 3A and Table 3B as the following values ​​and satisfy the following conditions: TABLE 3C Values ​​of optical and physical parameters / definitions f[mm] 1,82 f / |R11|+f / |R12| 1,39 Fno 2,33 (R3+R4) / (R3-R4) 3,02 HFOV [degree] 75,4 ATmax / f 0,73 FOV [degrees] 150,9 BL / TL 0,13 tan(HFOV) 2,73 SL / TL 0,45 TD / EPD -0,56 TD / T56 8,84 f [mm] 7,35 T23 / T12 0,050 TD / f 3,16 T56 / T34 7,08 |f / fj|max 0,96 Vmin 16,3 f / f3 -0,28 V3+V5 41,6 f / f5 -0,31 Nmax 1,697 f / f12 0,43 Y1R1 / Y6R2 1,72 f / f45 0,71 Y2R1 / Y5R2 1,69 4. Embodiment

[0132] Fig. 7 is a schematic view of an image acquisition unit according to the 4th embodiment of the present disclosure. Fig.Fig. 8 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the 4th embodiment. In Fig. 7, the image sensing unit 4 includes the photographing optical lens assembly (its reference numeral is omitted) of the present disclosure and an image sensor IS. The photographing optical lens assembly includes, in order from an object side to an image side along an optical path, a first lens element E1, a second lens element E2, a third lens element E3, an aperture stop ST, a fourth lens element E4, a fifth lens element E5, a stop S1, a sixth lens element E6, a filter E7, and an image surface IMG. The photographing optical lens assembly includes six lens elements (E1, E2, E3, E4, E5, and E6), and no additional lens element is disposed between each of the adjacent six lens elements.

[0133] The first lens element E1 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The first lens element E1 is made of glass material and has an object-side surface and an image-side surface, both of which are spherical.

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

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

[0136] The fourth lens element E4 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The image-side surface of the fourth lens element E4 has an inflection point.

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

[0138] The sixth lens element E6 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the sixth lens element E6 has two inflection points. The image-side surface of the sixth lens element E6 has one inflection point. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof. The image-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof.

[0139] The filter E7 is made of glass and is located between the sixth lens element E6 and the image surface IMG. It does not affect the focal length of the photographing optical lens assembly. The image sensor IS is located on or near the image surface IMG of the photographing optical lens assembly.

[0140] In this embodiment, a minimum value among maximum effective radii of all lens surfaces of the photographing optical lens assembly is Ymin, and a maximum effective radius of the image-side surface of the third lens element E3 is Ymin.

[0141] The detailed optical data of the 4th embodiment are shown in Table 4A and the aspherical surface data in Table 4B below. TABLE 4A 4. Embodiment f = 1.95 mm, Fno = 2.38, HFOV = 71.5 degrees Surface # radius of curvature thickness material index Abbe # Focal length 0 lens infinity infinity 1 Lens 1 12,5949 (SPH) 0,600 Glass 1,729 54,7 -3,34 2 2,0000 (SPH) 1,375 3 Lens 2 -2,6925 (ASP) 0,722 plastic 1,545 56,1 3,55 4 -1,2329 (ASP) 0,030 5 Lens 3 1,6260 (ASP) 0,424 plastic 1,660 20,4 -8,20 6 1,1208 (ASP) 0,218 7 Aperture diaphragm Plano -0,035 8 Lens 4 2,5099 (ASP) 0,839 plastic 1,545 56,1 1,78 9 -1,3961 (ASP) 0,079 10 Lens 5 -10,4773 (ASP) 0,320 plastic 1,669 19,5 -4,00 11 3,6337 (ASP) 0,497 12 aperture Plano 0,090 13 Lens 6 4,4128 (ASP) 0,738 plastic 1,534 56,0 -15,07 14 2,6848 (ASP) 0,400 15 filter Plano 0,300 Glass 1,517 64,2 - 16 Plano 0,395 17 Picture Plano - Note: Reference wavelength is 587.6 nm (d-line). An effective radius of the aperture S1 (surface 12) is 1.538 mm. TABLE 4B Aspherical coefficients Surface # 3 4 5 6 8 9 k= -2,58762E+00 -6,32180E+00 -4,39629E+00 -5,19676E+00 3,97268E-01 -8,64579E-02 A4 = -6,02354E-02 -4,62861 E-02 1,05061E-01 -1,37346E-01 -5,63933E-02 -3,51121E-01 A6 = 8,07719E-02 4,74130E-02 9,19416E-02 1,32673E+00 9,99465E-02 1,78302E+00 A8 = -5,66666E-02 -3,89730E-02 -4,71651E-01 -5,78951E+00 6,35819E-01 -5,95686E+00 A10 = 2,29405E-02 2,13284E-02 5,87423E-01 1,74816E+01 -3,84917E+00 1,11880E+01 A12 = -5,10604E-03 -6,79943E-03 -4,67744E-01 -3,09090E+01 7,05737E+00 -1,18008E+01 A14 = 4,98524E-04 9,82873E-04 1,84147E-01 2,41506E+01 -4,02917E+00 5,44081E+00 Surface # 10 11 13 14 - - k= 1,41523E+01 -9,00000E+01 2,22598E+00 2,31372E-01 - - A4 = -7,22801E-01 -1,51104E-01 -2,60051E-01 -2,02650E-01 - - A6 = 2,97137E+00 5,12606E-01 2,24123E-01 1,15132E-01 - - A8 = -1,10395E+01 -9,34445E-01 -1,96188E-01 -7,11136E-02 - - A10 = 2,69204E+01 1,12840E+00 1,85613E-01 3,50582E-02 - - A12 = -4,25327E+01 -8,87367E-01 -1,34025E-01 -1,22869E-02 - - A14 = 3,75577E+01 4,37376E-01 6,42342E-02 2,89702E-03 - - A16 = -1,36428E+01 -1,01885E-01 -1,94138E-02 -4,30591E-04 - - A18 = - - 3,37588E-03 3,40363E-05 - - A20 = - - -2,58184E-04 -8,79791E-07 - -

[0142] In Embodiment 4, the equation of the aspherical surface profiles of the above-mentioned lens elements is the same as that of Embodiment 1. The definitions of these parameters, listed in Table 4C below, are also the same as those given in Embodiment 1, with corresponding values ​​for Embodiment 4, so no further explanation is given in this regard.

[0143] In addition, these parameters can be calculated from Table 4A and Table 4B as the following values ​​and satisfy the following conditions: TABLE 4C Values ​​of optical and physical parameters / definitions f [mm] 1,95 f / |R11|+f / |R12| 1,17 Fno 2,38 (R3+R4) / (R3-R4) 2,69 HFOV [degree] 71,5 ATmax / f 0,70 FOV [degrees] 143,0 BL / TL 0,16 tan(HFOV) 2,87 SL / TL 0,52 TD / EPD -0,75 TD / T56 10,05 f[mm] 7,19 T23 / T12 0,022 TD / f 3,02 T56 / T34 3,21 |f / fj|max 1,10 Vmin 19,5 f / f3 -0,24 V3+V5 39,9 f / f5 -0,49 Nmax 1,729 f / f12 0,30 Y1R1 / Y6R2 1,41 f / f45 0,73 Y2R1 / Y5R2 1,44 5. Embodiment

[0144] Fig. 9 is a schematic view of an image acquisition unit according to the 5th embodiment of the present disclosure. Fig. Figure 10 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the fifth embodiment. Fig. 9, the image capture unit 5 includes the photographing optical lens assembly (its reference numeral is omitted) of the present disclosure and an image sensor IS. The photographing optical lens assembly includes, in order from an object side to an image side along an optical path, a first lens element E1, a second lens element E2, a third lens element E3, an aperture stop ST, a fourth lens element E4, a fifth lens element E5, a stop S1, a sixth lens element E6, a filter E7, and an image surface IMG. The photographing optical lens assembly includes six lens elements (E1, E2, E3, E4, E5, and E6), and no additional lens element is disposed between each of the adjacent six lens elements.

[0145] The first lens element E1 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The first lens element E1 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the first lens element E1 has an inflection point. The object-side surface of the first lens element E1 has a critical point in an off-axis region thereof.

[0146] The second lens element E2 with positive refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The second lens element E2 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The image-side surface of the second lens element E2 has an inflection point.

[0147] The third lens element E3 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The third lens element E3 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the third lens element E3 has an inflection point. The image-side surface of the third lens element E3 has an inflection point.

[0148] The fourth lens element E4 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The image-side surface of the fourth lens element E4 has an inflection point.

[0149] The fifth lens element E5 with negative refractive power has an object-side surface that is convex in a paraxial region thereof, and an image-side surface that is concave in a paraxial region thereof. The fifth lens element E5 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the fifth lens element E5 has an inflection point. The object-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof.

[0150] The sixth lens element E6 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has an aspherical object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the sixth lens element E6 has an inflection point. The image-side surface of the sixth lens element E6 has an inflection point. The image-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof.

[0151] The filter E7 is made of glass and is located between the sixth lens element E6 and the image surface IMG. It does not affect the focal length of the photographing optical lens assembly. The image sensor IS is located on or near the image surface IMG of the photographing optical lens assembly.

[0152] In this embodiment, a minimum value among maximum effective radii of all lens surfaces of the photographing optical lens assembly is Ymin, and a maximum effective radius of the object-side surface of the fourth lens element E4 is Ymin.

[0153] The detailed optical data of the 5th embodiment are shown in Table 5A and the data of the aspherical surfaces are shown in Table 5B below. TABLE 5A 5. Embodiment f = 1.89 mm, Fno = 2.33, HFOV = 72.9 degrees Surface # radius of curvature thickness material index Abbe # Focal length 0 object infinity infinity 1 Lens 1 -53,6264 (ASP) 0,550 plastic 1,534 56,0 -4,47 2 2,5089 (ASP) 1,263 3 Lens 2 -2,3501 (ASP) 0,954 plastic 1,544 56,0 3,26 4 -1,1559 (ASP) 0,036 5 Lens 3 1,6304 (ASP) 0,407 plastic 1,614 25,6 -6,21 6 1,0335 (ASP) 0,204 7 Aperture diaphragm Plano -0,087 8 Lens 4 1,7477 (ASP) 0,738 plastic 1,544 56,0 2,01 9 -2,4949 (ASP) 0,047 10 Lens 5 5,2410 (ASP) 0,281 plastic 1,680 18,2 -7,99 11 2,6098 (ASP) 0,267 12 aperture Plano 0,454 13 Lens 6 -43,7281 (ASP) 0,539 plastic 1,642 22,5 -6,69 14 4,7845 (ASP) 0,400 15 filter Plano 0,300 Glass 1,517 64,2 - 16 Plano 0,149 17 Picture Plano - Note: Reference wavelength is 587.6 nm (d-line). An effective radius of the aperture S1 (surface 12) is 1.058 mm. TABLE 5B Aspherical coefficients Surface # 1 2 3 4 5 6 k = -9,00000E+01 1,91885E-01 -1,42412E+00 -6,28923E+00 -5,03901E+00 -4,97552E-01 A4 = -1,20475E-04 -2,66341 E-03 -7,70222E-02 -4,84591 E-02 1,29000E-01 -6,84393E-01 A6 = 2,18930E-03 1,78356E-03 8,14372E-02 2,90243E-02 9,92194E-02 1,51919E+00 A8 = -5,78657E-04 5,32287E-03 -4,49361 E-02 -4,91730E-03 -7,77496E-01 1,91039E+00 A10 = 7,85581E-05 -3,45715E-03 1,01577E-02 -9,54721E-03 1,21542E+00 -3,81716E+01 A12 = -5,55652E-06 1,29564E-03 1,30830E-03 9,02148E-03 -1,27002E+00 1,59846E+02 A14 = 1,66880E-07 -1,96344E-04 -6,77592E-04 -2,16861E-03 5,60279E-01 -3,48400E+02 A16 = - - - - - 3,99315E+02 A18 = - - - - - -1,87775E+02 Surface # 8 9 10 11 13 14 k = 1,79464E+00 2,51590E-02 -6,49243E+01 -2,35647E+01 9,00000E+01 3,99932E+00 A4 = -9,94287E-02 -9,28820E-01 -1,11570E+00 -1,81282E-01 -2,75547E-01 -2,15581E-01 A6 = 4,97386E-01 5,42058E+00 5,09366E+00 6,94614E-01 3,18297E-01 1,35453E-01 A8 = -3,05776E-01 -1,92821E+01 -1,80644E+01 -1,36678E+00 -7,30257E-01 -1,11045E-01 A10 = -2,92820E+00 4,07110E+01 3,81819E+01 1,26126E+00 1,40626E+00 7,14293E-02 A12 = 8,28173E+00 -4,64303E+01 -4,65203E+01 2,39471E-01 -1,75670E+00 -2,95783E-02 A14 = -7,06271E+00 2,25051E+01 2,57376E+01 -1,34755E+00 1,38807E+00 6,50055E-03 A16 = - - -2,40185E+00 7,17653E-01 -6,59713E-01 -2,52710E-04 A18 = - - - - 1.70871E-01 -1.57390E-04 A20 = - - - - -1.85148E-02 1.99034E-05

[0154] In Embodiment 5, the equation of the aspherical surface profiles of the above-mentioned lens elements is the same as that of Embodiment 1. The definitions of these parameters, listed in Table 5C below, are also the same as those given in Embodiment 1, with corresponding values ​​for Embodiment 5, so no further explanation is given in this regard.

[0155] In addition, these parameters can be calculated from Table 5A and Table 5B as the following values ​​and satisfy the following conditions: TABLE 5C Values ​​of optical and physical parameters / definitions f[mm] 1,89 f / |R11|+f / |R12| 0,44 Fno 2,33 (R3+R4) / (R3-R4) 2,94 HFOV [degree] 72,9 ATmax / f 0,67 FOV [degrees] 145,8 BL / TL 0,13 TL / lmgH 2,67 SL / TL 0,47 tan(HFOV) -0,68 TD / T56 7,84 TD / EPD 6,96 T23 / T12 0,029 TD / f 2,99 T56 / T34 6,16 |f / fj|max 0,94 Vmin 18,2 f / f3 -0,30 V3+V5 43,8 f / f5 -0,24 Nmax 1,680 f / f12 0,45 Y1R1 / Y6R2 1,70 f / f45 0,79 Y2R1 / Y5R2 1,56 6. Embodiment

[0156] Fig. 11 is a schematic view of an image acquisition unit according to the 6th embodiment of the present disclosure. Fig. Fig. 12 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the 6th embodiment. In Fig. 11, the image capture unit 6 includes the photographing optical lens assembly (its reference numeral is omitted) of the present disclosure and an image sensor IS. The photographing optical lens assembly includes, in order from an object side to an image side along an optical path, a first lens element E1, a stop S1, a second lens element E2, a third lens element E3, an aperture stop ST, a fourth lens element E4, a fifth lens element E5, a stop S2, a sixth lens element E6, a filter E7, and an image surface IMG. The photographing optical lens assembly includes six lens elements (E1, E2, E3, E4, E5, and E6), and no additional lens element is disposed between each of the adjacent six lens elements.

[0157] The first lens element E1 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The first lens element E1 is made of glass material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the first lens element E1 has an inflection point. The object-side surface of the first lens element E1 has a critical point in an off-axis region thereof.

[0158] The second lens element E2 with positive refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The second lens element E2 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the second lens element E2 has an inflection point. The image-side surface of the second lens element E2 has an inflection point.

[0159] The third lens element E3 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The third lens element E3 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the third lens element E3 has an inflection point.

[0160] The fourth lens element E4 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical.

[0161] The fifth lens element E5 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The fifth lens element E5 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the fifth lens element E5 has one inflection point. The image-side surface of the fifth lens element E5 has two inflection points. The object-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof.

[0162] The sixth lens element E6 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the sixth lens element E6 has an inflection point. The image-side surface of the sixth lens element E6 has an inflection point. The image-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof.

[0163] The filter E7 is made of glass and is located between the sixth lens element E6 and the image surface IMG. It does not affect the focal length of the photographing optical lens assembly. The image sensor IS is located on or near the image surface IMG of the photographing optical lens assembly.

[0164] In this embodiment, a minimum value among maximum effective radii of all lens surfaces of the photographing optical lens assembly is Ymin, and a maximum effective radius of the image-side surface of the third lens element E3 is Ymin.

[0165] The detailed optical data of the 6th embodiment are shown in Table 6A and the data of the aspherical surfaces are shown in Table 6B below. TABLE 6A 6. Embodiment f = 1.80 mm, Fno = 2.27, HFOV = 76.4 degrees Surface # radius of curvature thickness material index Abbe # Focal length 0 object infinity infinity 1 Lens 1 -18,9008 (ASP) 0,850 Glass 1,547 62,7 -3,36 2 2,0641 (ASP) 0,755 3 aperture Plano 0,345 4 Lens 2 -2,1859 (ASP) 0,577 plastic 1,535 55,9 7,76 5 -1,5631 (ASP) 0,030 6 Lens 3 1,8377 (ASP) 0,496 plastic 1,587 28,3 -21,58 7 1,4447 (ASP) 0,176 8 Aperture diaphragm Plano -0,056 9 Lens 4 2,1406 (ASP) 0,827 plastic 1,544 56,0 1,58 10 -1,2444 (ASP) 0,068 11 Lens 5 6,7036 (ASP) 0,350 plastic 1,669 19,5 -3,47 12 1,6889 (ASP) 0,199 13 aperture Plano 0,384 14 Lens 6 1,9977 (ASP) 0,514 plastic 1,544 56,0 36,15 15 2,0220 (ASP) 0,400 16 filter Plano 0,300 Glass 1,517 64,2 - 17 Plano 0,489 18 Picture Plano - Note: Reference wavelength is 587.6 nm (d-line). An effective radius of the aperture S1 (surface 3) is 1,310 mm. An effective radius of the aperture S2 (surface 13) is 1.061 mm. TABLE 6B Aspherical coefficients Surface # 1 2 4 5 6 7 k = -9,00000E+01 2,79501E-01 -5,00777E+00 -8,12185E+00 -7,91578E+00 -6,62647E+00 A4 = 5,64083E-03 5,99949E-03 -5,95229E-02 1,99805E-02 1,53610E-01 -8,19425E-02 A6 = -3,76127E-05 -9,50293E-03 1,16989E-01 -1,22170E-03 -9,40610E-02 -2,91430E-01 A8 = -1,59060E-04 1,61548E-02 -1,16563E-01 3,83235E-02 -1,01091E+00 5,35426E+00 A10 = 3,02877E-05 -1,12080E-02 6,94306E-02 -7,86506E-02 3,75886E+00 -3,34938E+01 A12 = -2,25963E-06 1,90649E-03 -2,58872E-02 4,02052E-02 -7,24238E+00 1,08550E+02 A14 = 6,25603E-08 2,23394E-04 4,57549E-03 -3,72630E-03 6,72541E+00 -1,80737E+02 A16 = - - - - -2,29725E+00 1,25428E+02 Surface # 9 10 11 12 14 15 k = -8,78452E-01 -6,65909E-01 2,24883E+01 -1,48660E+01 -9,06446E-01 -1,82567E-02 A4 = -3,43665E-02 -1,27765E-01 -5,34893E-01 -6,58175E-02 -2,65292E-01 -2,29180E-01 A6 = -1,61730E-01 9,69479E-01 2,05757E+00 2,22615E-01 2,33837E-01 1,12812E-01 A8 = 8,64397E-01 -4,12511E+00 -9,35864E+00 -5,88323E-01 -2,18468E-01 -5,34920E-02 A10 = -5,21493E-01 7,89158E+00 2,50787E+01 5,80160E-01 1,91008E-01 1,89022E-02 A12 = -9,71678E+00 -6,99124E+00 -4,25062E+01 1,39277E-01 -1,24587E-01 -5,51411E-03 A14 = 2,83054E+01 8,55378E-01 4,15712E+01 -7,60667E-01 5,39205E-02 1,84360E-03 A16 = -2,21840E+01 2,00639E+00 -1,97624E+01 6,06657E-01 -1,45122E-02 -6,77524E-04 A18 = - - 2,88817E+00 -1,65474E-01 2,21017E-03 1,56000E-04 A20 = - - - - -1,46946E-04 -1,44661 E-05

[0166] In the sixth embodiment, the equation of the aspherical surface profiles of the above-mentioned lens elements is the same as the equation of the first embodiment. The definitions of these parameters, listed in Table 6C below, are also the same as those given in the first embodiment, with corresponding values ​​for the sixth embodiment, so no further explanation is given in this regard.

[0167] In addition, these parameters can be calculated from Table 6A and Table 6B as the following values ​​and satisfy the following conditions: TABLE 6C Values ​​of optical and physical parameters / definitions f[mm] 1,80 f / |R11|+f / |R12| 1,79 Fno 2,27 (R3+R4) / (R3-R4) 6,02 HFOV [degree] 76,4 ATmax / f 0,61 FOV [degrees] 152,7 BL / TL 0,18 TL / lmgH 2,75 SL / TL 0,52 tan(HFOV) -0,52 TD / T56 9,46 TD / EPD 6,95 T23 / T12 0,027 TD / f 3,06 T56 / T34 4,86 |f / fj|max 1,14 Vmin 19,5 f / f3 -0,08 V3+V5 47,8 f / f5 -0,52 Nmax 1,669 f / f12 -0,16 Y1R1 / Y6R2 1,69 f / f45 0.81 Y2R1 / Y5R2 1.27 7. Embodiment

[0168] Fig. 13 is a schematic view of an image acquisition unit according to the 7th embodiment of the present disclosure. Fig. Fig. 14 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the 7th embodiment. In Fig. 13, the image capture unit 7 includes the photographing optical lens assembly (its reference numeral is omitted) of the present disclosure and an image sensor IS. The photographing optical lens assembly includes, in order from an object side to an image side along an optical path, a first lens element E1, a second lens element E2, a third lens element E3, an aperture stop ST, a fourth lens element E4, a fifth lens element E5, a stop S1, a sixth lens element E6, a filter E7, and an image surface IMG. The photographing optical lens assembly includes six lens elements (E1, E2, E3, E4, E5, and E6), and no additional lens element is disposed between each of the adjacent six lens elements.

[0169] The first lens element E1 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The first lens element E1 is made of glass material and has an object-side surface and an image-side surface, both of which are spherical.

[0170] 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 plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the second lens element E2 has two inflection points. The image-side surface of the second lens element E2 has one inflection point.

[0171] The third lens element E3 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The third lens element E3 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical.

[0172] The fourth lens element E4 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The image-side surface of the fourth lens element E4 has an inflection point.

[0173] The fifth lens element E5 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The fifth lens element E5 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the fifth lens element E5 has one inflection point. The image-side surface of the fifth lens element E5 has two inflection points. The object-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof.

[0174] The sixth lens element E6 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the sixth lens element E6 has two inflection points. The image-side surface of the sixth lens element E6 has one inflection point. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof. The image-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof.

[0175] The filter E7 is made of glass and is located between the sixth lens element E6 and the image surface IMG. It does not affect the focal length of the photographing optical lens assembly. The image sensor IS is located on or near the image surface IMG of the photographing optical lens assembly.

[0176] In this embodiment, a minimum value among maximum effective radii of all lens surfaces of the photographing optical lens assembly is Ymin, and a maximum effective radius of the image-side surface of the third lens element E3 is Ymin.

[0177] The detailed optical data of the 7th embodiment are shown in Table 7A and the data of the aspherical surfaces are shown in Table 7B below. TABLE 7A 7. Embodiment f = 1.95 mm, Fno = 2.38, HFOV = 71.5 degrees Surface # radius of curvature thickness material index Abbe # Focal length 0 object infinity infinity 1 Lens 1 10,1571 (SPH) 0,600 Glass 1,729 54,7 -3,53 2 2,0008 (SPH) 1,111 3 Lens 2 -2,6162 (ASP) 0,854 plastic 1,544 56,0 5,51 4 -1,5576 (ASP) 0,030 5 Lens 3 2,1668 (ASP) 0,540 plastic 1,669 19,5 -12,29 6 1,5437 (ASP) 0,183 7 Aperture diaphragm Plano -0,051 8 Lens 4 2,5546 (ASP) 0,881 plastic 1,544 56,0 1,65 9 -1,2131 (ASP) 0,030 10 Lens 5 6,1211 (ASP) 0,350 plastic 1,669 19,5 -3,99 11 1,8157 (ASP) 0,243 12 aperture Plano 0,428 13 Lens 6 4,1660 (ASP) 0,693 plastic 1,544 56,0 -13,83 14 2,5239 (ASP) 0,400 15 filter Plano 0,300 Glass 1,517 64,2 - 16 Plano 0,399 17 Picture Plano - Note: Reference wavelength is 587.6 nm (d-line). An effective radius of the aperture S1 (surface 12) is 1,150 mm. TABLE 7B Aspherical coefficients Surface # 3 4 5 6 8 9 k = -6,45268E+00 -8,12339E+00 -8,31626E+00 -6,65981E+00 1,04347E-01 -5,74728E-01 A4 = -3,53447E-02 2,79950E-02 1,12813E-01 -1,97094E-01 -6,93463E-02 -1,90933E-01 A6 = 6,32960E-02 -1,65810E-02 -1,90344E-01 1,13874E+00 1,66301E-01 1,51841E+00 A8 = -4,08319E-02 5,51718E-02 2,66946E-01 -5,60338E+00 2,24555E-01 -6,26931E+00 A10 = 1,38406E-02 -6,52144E-02 -5,69039E-01 1,82603E+01 -3,16419E+00 1,29519E+01 A12 = -1,97424E-03 3,58518E-02 6,30614E-01 -3,18019E+01 7,44997E+00 -1,40957E+01 A14 = 8,35400E-06 -6,51584E-03 -2,25400E-01 2,41624E+01 -4,97928E+00 6,39709E+00 Surface # 10 11 13 14 - - k = 2,33939E+01 -1,79760E+01 2,26634E+00 2,25504E-01 - - A4 = -5,91763E-01 -4,59761 E-02 -2,69798E-01 -2,29118E-01 - - A6 = 2,44226E+00 1,30835E-01 3,08532E-01 1,62502E-01 - - A8 = -1,03237E+01 -3,18475E-01 -3,74741E-01 -1,26117E-01 - - A10 = 2,57384E+01 3,83345E-01 3,69682E-01 7,62139E-02 - - A12 = -3,92556E+01 -2,49813E-01 -2,42594E-01 -3,32265E-02 - - A14 = 3,26502E+01 1,16658E-01 1,00769E-01 1,01440E-02 - - A16 = -1,11747E+01 -3,26256E-02 -2,55314E-02 -2,05690E-03 - - A18 = - - 3,60922E-03 2,45059E-04 - - A20 = - - -2,18835E-04 -1,27733E-05 - -

[0178] In the 7th embodiment, the equation of the aspherical surface profiles of the above-mentioned lens elements is the same as the equation of the 1st embodiment. The definitions of these parameters, listed in Table 7C below, are also the same as those in the 1st embodiment, with corresponding values ​​for the 7th embodiment, so no further explanation is given in this regard.

[0179] In addition, these parameters can be calculated from Table 7A and Table 7B as the following values ​​and satisfy the following conditions: TABLE 7C Values ​​of optical and physical parameters / definitions f[mm] 1,95 f / |R11|+f / |R12| 1,24 Fno 2,38 (R3+R4) / (R3-R4) 3,94 HFOV [degree] 71,5 ATmax / f 0,57 FOV [degrees] 143,0 BL / TL 0,16 TL / lmgH 2,87 SL / TL 0,53 tan(HFOV) -0,75 TD / T56 8,78 TD / EPD 7,18 T23 / T12 0,027 TD / f 3,02 T56 / T34 5,08 |f / fj|max 1,19 Vmin 19,5 f / f3 -0,16 V3+V5 39,0 f / f5 -0,49 Nmax 1,729 f / f12 0,01 Y1R1 / Y6R2 1,34 f / f45 0,86 Y2R1 / Y5R2 1,38 8. Embodiment

[0180] Fig. 15 is a schematic view of an image acquisition unit according to the 8th embodiment of the present disclosure. Fig. Fig. 16 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the 8th embodiment. In Fig.15, the image capture unit 8 includes the photographing optical lens assembly (its reference numeral is omitted) of the present disclosure and an image sensor IS. The photographing optical lens assembly includes, in order from the object side to the image side along an optical path, a first lens element E1, a second lens element E2, a third lens element E3, an aperture stop ST, a fourth lens element E4, a fifth lens element E5, a stop S1, a sixth lens element E6, a filter E7, and an image surface IMG. The photographing optical lens assembly includes six lens elements (E1, E2, E3, E4, E5, and E6), and no additional lens element is disposed between each of the adjacent six lens elements.

[0181] The first lens element E1 with negative refractive power has an object-side surface that is convex in its paraxial region and an image-side surface that is concave in its paraxial region. The first lens element E1 is made of glass material and has an object-side surface and an image-side surface, both of which are aspherical. The image-side surface of the first lens element E1 has an inflection point.

[0182] The second lens element E2 with positive refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The second lens element E2 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the second lens element E2 has an inflection point. The image-side surface of the second lens element E2 has an inflection point.

[0183] The third lens element E3 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The third lens element E3 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the third lens element E3 has an inflection point.

[0184] The fourth lens element E4 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical.

[0185] The fifth lens element E5 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The fifth lens element E5 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the fifth lens element E5 has an inflection point. The object-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof.

[0186] The sixth lens element E6 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the sixth lens element E6 has two inflection points. The image-side surface of the sixth lens element E6 has one inflection point. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof. The image-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof.

[0187] The filter E7 is made of glass and is located between the sixth lens element E6 and the image surface IMG. It does not affect the focal length of the photographing optical lens assembly. The image sensor IS is located on or near the image surface IMG of the photographing optical lens assembly.

[0188] In this embodiment, a minimum value among maximum effective radii of all lens surfaces of the photographing optical lens assembly is Ymin, and a maximum effective radius of the object-side surface of the fourth lens element E4 is Ymin.

[0189] The detailed optical data of the 8th embodiment are shown in Table 8A and the data of the aspherical surfaces are shown in Table 8B below. TABLE 8A 8. Embodiment f = 1.73 mm, Fno = 2.20, HFOV = 79.9 degrees Surface # radius of curvature thickness material index Abbe # Focal length 0 object infinity infinity 1 Lens 1 14,4014 (ASP) 0,583 Glass 1,713 53,8 -3,49 2 2,0871 (ASP) 1,729 3 Lens 2 -2,5166 (ASP) 0,739 plastic 1,544 56,0 3,51 4 -1,1977 (ASP) 0,038 5 Lens 3 1,5865 (ASP) 0,412 plastic 1,697 16,3 -6,49 6 1,0492 (ASP) 0,226 7 Aperture diaphragm Plano -0,079 8 Lens 4 1,8694 (ASP) 0,776 plastic 1,544 56,0 2,10 9 -2,4987 (ASP) 0,050 10 Lens 5 6,6329 (ASP) 0,281 plastic 1,697 16,3 -10,75 11 3,4582 (ASP) 0,505 12 aperture Plano 0,112 13 Lens 6 4,7032 (ASP) 0,617 plastic 1,535 55,9 -11,95 14 2,5845 (ASP) 0,404 15 filter Plano 0,300 Glass 1,517 64,2 - 16 Plano 0,308 17 Picture Plano - Note: Reference wavelength is 587.6 nm (d-line). An effective radius of the aperture S1 (surface 12) is 1.494 mm. TABLE 8B Aspherical coefficients Surface # 1 2 3 4 5 6 k= 6,39341E+00 9,76123E-02 -1,94296E+00 -6,59322E+00 -4,46863E+00 -3,94996E-01 A4 = -1,00079E-04 5,80337E-03 -6,89946E-02 -5,27627E-02 1,00149E-01 -6,91748E-01 A6 = 1,83527E-04 -1,36502E-02 8,11751E-02 8,33091E-02 1,82949E-01 1,94157E+00 A8 = 7,15706E-05 2,00132E-02 -4,62229E-02 -9,84561 E-02 -7,36092E-01 -4,11076E+00 A10 = -1,82493E-05 -1,36292E-02 9,79878E-03 7,52720E-02 1,08983E+00 1,99475E+00 A12 = 1,46092E-06 4,92694E-03 9,73741E-04 -3,30428E-02 -1,06859E+00 1,61921E+01 A14 = -3,99794E-08 -6,94463E-04 -4,30657E-04 6,51446E-03 4,16642E-01 -5,25231E+01 A16 = - - - - - 6,73371E+01 A18 = - - - - - -3,12680E+01 Surface # 8 9 10 11 13 14 k= 5,71506E-01 2,15606E+00 -8,63023E+01 -6,75260E+01 2,43743E+00 1,87947E-01 A4 = -1,10308E-01 -9,81382E-01 -1,17761E+00 -1,73356E-01 -2,69602E-01 -2,22884E-01 A6 = 2,97996E-01 4,87416E+00 4,93513E+00 5,52117E-01 2,93613E-01 1,57687E-01 A8 = 2,81075E-01 -1,43435E+01 -1,54186E+01 -7,84558E-01 -3,51951E-01 -1,31544E-01 A10 = -2,34354E+00 2,45039E+01 2,97101E+01 2,66144E-01 3,68427E-01 8,77753E-02 A12 = 4,19801E+00 -2,27674E+01 -3,51310E+01 6,67651E-01 -2,64779E-01 -4,28206E-02 A14 = -2,59989E+00 9,18252E+00 2,15925E+01 -8,13729E-01 1,22262E-01 1,45862E-02 A16 = - - -4,56270E+00 2,81920E-01 -3,45698E-02 -3,27074E-03 A18 = - - - - 5,41882E-03 4,28520E-04 A20 = - - - - -3,58125E-04 -2,44881E-05

[0190] In the 8th embodiment, the equation of the aspherical surface profiles of the above-mentioned lens elements is the same as the equation of the 1st embodiment. The definitions of these parameters, listed in Table 8C below, are also the same as those given in the 1st embodiment, with corresponding values ​​for the 8th embodiment, so no further explanation is given in this regard.

[0191] In addition, these parameters can be calculated from Table 8A and Table 8B as the following values ​​and satisfy the following conditions: TABLE 8C Values ​​of optical and physical parameters / definitions f[mm] 1,73 f / |R11|+f / |R12| 1,04 Fno 2,20 (R3+R4) / (R3-R4) 2,82 HFOV [degree] 79,9 ATmax / f 1,00 FOV [degrees] 159,7 BL / TL 0,14 TL / lmgH 2,87 SL / TL 0,47 tan(HFOV) -0,37 TD / T56 9,71 TD / EPD 7,63 T23 / T12 0,022 TD / f 3,47 T56 / T34 4,20 |f / fj|max 0,82 Vmin 16,3 f / f3 -0,27 V3+V5 32,6 f / f5 -0,16 Nmax 1,713 f / f12 0,34 Y1R1 / Y6R2 1,78 f / f45 0,72 Y2R1 / Y5R2 1,72 9. Embodiment

[0192] Fig. 17 is a schematic view of an image acquisition unit according to the 9th embodiment of the present disclosure. Fig.Fig. 18 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image acquisition unit according to the 9th embodiment. In Fig. 17, the image sensing unit 9 includes the photographing optical lens assembly (its reference numeral is omitted) of the present disclosure and an image sensor IS. The photographing optical lens assembly includes, in order from an object side to an image side along an optical path, a first lens element E1, a second lens element E2, a third lens element E3, an aperture stop ST, a fourth lens element E4, a fifth lens element E5, a stop S1, a sixth lens element E6, a filter E7, and an image surface IMG. The photographing optical lens assembly includes six lens elements (E1, E2, E3, E4, E5, and E6), and no additional lens element is disposed between each of the adjacent six lens elements.

[0193] The first lens element E1 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The first lens element E1 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical.

[0194] 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 plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the second lens element E2 has an inflection point. The image-side surface of the second lens element E2 has an inflection point.

[0195] The third lens element E3 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The third lens element E3 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the third lens element E3 has an inflection point. The image-side surface of the third lens element E3 has an inflection point.

[0196] The fourth lens element E4 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical.

[0197] The fifth lens element E5 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The fifth lens element E5 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the fifth lens element E5 has an inflection point. The object-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof.

[0198] The sixth lens element E6 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the sixth lens element E6 has two inflection points. The image-side surface of the sixth lens element E6 has two inflection points. The object-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof. The image-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof.

[0199] The filter E7 is made of glass and is located between the sixth lens element E6 and the image surface IMG. It does not affect the focal length of the photographing optical lens assembly. The image sensor IS is located on or near the image surface IMG of the photographing optical lens assembly.

[0200] In this embodiment, a minimum value among maximum effective radii of all lens surfaces of the photographing optical lens assembly is Ymin, and a maximum effective radius of the image-side surface of the fourth lens element E4 is Ymin.

[0201] The detailed optical data of the 9th embodiment are shown in Table 9A and the data of the aspherical surfaces are shown in Table 9B below. TABLE 9A 9. Embodiment f = 2.38 mm, Fno = 2.40, HFOV = 71.1 degrees Surface # radius of curvature thickness material index Abbe # Focal length 0 object infinity infinity 1 Lens 1 46,9406 (ASP) 0,610 plastic 1,544 56,0 -5,72 2 2,9046 (ASP) 1,477 3 Lens 2 -2,7097 (ASP) 0,690 plastic 1,544 55,5 4,19 4 -1,3481 (ASP) 0,033 5 Lens 3 1,6390 (ASP) 0,382 plastic 1,614 25,6 -7,12 6 1,0863 (ASP) 0,224 7 Aperture diaphragm Plano -0,105 8 Lens 4 1,9326 (ASP) 0,830 plastic 1,544 56,0 2,22 9 -2,7441 (ASP) 0,033 10 Lens 5 12,7050 (ASP) 0,311 plastic 1,680 18,2 -11,10 11 4,6894 (ASP) 0,280 12 aperture Plano 0,488 13 Lens 6 11,6048 (ASP) 0,723 plastic 1,535 55,9 -6,29 14 2,5495 (ASP) 0,444 15 filter Plano 0,333 Glass 1,517 64,2 - 16 Plano 0,243 17 Picture Plano - Note: Reference wavelength is 587.6 nm (d-line). An effective radius of the aperture S1 (surface 12) is 1.208 mm. TABLE 9B Aspherical coefficients Surface # 1 2 3 4 5 6 k = 9,00000E+01 2,43432E-01 -1,99846E+00 -7,03880E+00 -5,37137E+00 -7,31402E-01 A4 = -3,39151E-03 7,87842E-04 -5,40879E-02 -1,32113E-02 9,11920E-02 -5,67007E-01 A6 = 2,47264E-03 2,33872E-04 6,10059E-02 -5,25670E-03 2,02667E-01 1,20124E+00 A8 = -4,46744E-04 5,09107E-03 -3,83529E-02 1,50799E-02 -8,89066E-01 5,34017E-01 A10 = 4,27332E-05 -2,69378E-03 1,26329E-02 -1,27093E-02 1,35976E+00 -1,84094E+01 A12 = -2,14780E-06 8,01244E-04 -1,68069E-03 5,14701E-03 -1,27464E+00 7,11516E+01 A14 = 4,62677E-08 -9,89861 E-05 3,35765E-05 -6,59606E-04 4,87964E-01 -1,38662E+02 A16 = - - - - - 1,38752E+02 A18 = - - - - - -5,57182E+01 Surface # 8 9 10 11 13 14 k= 1,14311E+00 2,37223E+00 -7,26050E+01 -6,36448E+01 -4,62270E+01 -4,95736E-02 A4 = -7,40507E-02 -8,27546E-01 -9,17774E-01 -1,08921E-01 -1,92794E-01 -1,77505E-01 A6 = 2,29821E-01 4,16028E+00 3,67136E+00 2,83722E-01 2,04805E-01 1,18794E-01 A8 = 9,64263E-02 -1,22087E+01 -1,07131E+01 -3,31180E-01 -3,04207E-01 -8,88662E-02 A10 = -1,39193E+00 2,05075E+01 1,79206E+01 -1,00318E-01 3,64622E-01 5,08146E-02 A12 = 2,22230E+00 -1,82181E+01 -1,69249E+01 7,22916E-01 -2,87612E-01 -2,03616E-02 A14 = -1,18135E+00 6,75629E+00 7,71718E+00 -6,81678E-01 1,41900E-01 5,42099E-03 A16 = - - -1,08555E+00 2,07416E-01 -4,15831E-02 -9,10020E-04 A18 = - - - - 6,57355E-03 8,66475E-05 A20 = - - - - -4,29679E-04 -3,53258E-06

[0202] In the 9th embodiment, the equation of the aspherical surface profiles of the above-mentioned lens elements is the same as the equation of the 1st embodiment. The definitions of these parameters, listed in Table 9C below, are also the same as those given in the 1st embodiment, with corresponding values ​​for the 9th embodiment, so no further explanation is given in this regard.

[0203] In addition, these parameters can be calculated from Table 9A and Table 9B as the following values ​​and satisfy the following conditions: TABLE 9C Values ​​of optical and physical parameters / definitions f [mm] 2,38 f / |R11|+f / |R12| 1,14 Fno 2,40 (R3+R4) / (R3-R4) 2,98 HFOV [degree] 71,1 ATmax / f 0,62 FOV [degrees] 142,2 BL / TL 0,15 TL / lmgH 2,33 SL / TL 0,51 tan(HFOV) -0,77 TD / T56 7,78 TD / EPD 6,02 T23 / T12 0,022 TD / f 2,51 T56 / T34 6,45 |f / fj|max 1,07 Vmin 18,2 f / f3 -0,33 V3+V5 43,8 f / f5 -0,21 Nmax 1,680 f / f12 0,37 Y1R1 / Y6R2 1,54 f / f45 0,92 Y2R1 / Y5R2 1,82 10. Embodiment

[0204] Fig. 19 is a schematic view of an image acquisition unit according to the 10th embodiment of the present disclosure. Fig.Fig. 20 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit according to the 10th embodiment. In Fig. 19, the image sensing unit 10 includes the photographing optical lens assembly (its reference numeral is omitted) of the present disclosure and an image sensor IS. The photographing optical lens assembly includes, in order from an object side to an image side along an optical path, a first lens element E1, a second lens element E2, a third lens element E3, an aperture stop ST, a fourth lens element E4, a fifth lens element E5, a stop S1, a sixth lens element E6, a filter E7, and an image surface IMG. The photographing optical lens assembly includes six lens elements (E1, E2, E3, E4, E5, and E6), and no additional lens element is disposed between each of the adjacent six lens elements.

[0205] The first lens element E1 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The first lens element E1 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the first lens element E1 has an inflection point. The object-side surface of the first lens element E1 has a critical point in an off-axis region thereof.

[0206] The second lens element E2 with positive refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The second lens element E2 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The image-side surface of the second lens element E2 has an inflection point.

[0207] The third lens element E3 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The third lens element E3 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the third lens element E3 has an inflection point. The image-side surface of the third lens element E3 has an inflection point.

[0208] The fourth lens element E4 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The image-side surface of the fourth lens element E4 has an inflection point.

[0209] The fifth lens element E5 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The fifth lens element E5 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the fifth lens element E5 has an inflection point. The object-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof.

[0210] The sixth lens element E6 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the sixth lens element E6 has an inflection point.

[0211] The filter E7 is made of glass and is located between the sixth lens element E6 and the image surface IMG. It does not affect the focal length of the photographing optical lens assembly. The image sensor IS is located on or near the image surface IMG of the photographing optical lens assembly.

[0212] In this embodiment, a minimum value among the maximum effective radii of all lens surfaces of the photographing optical lens unit is Ymin, and a maximum effective radius of the image-side surface of the third lens element E3 is equal to Ymin.

[0213] The detailed optical data of the 10th embodiment are shown in Table 10A below, and the data of the aspherical surfaces are shown in Table 10B below. TABLE 10A 10. Embodiment f = 1.85 mm, Fno = 2.32, HFOV = 74.9 degrees Surface # radius of curvature thickness material index Abbe # Focal length 0 object infinity infinity 1 Lens 1 102,9227 (ASP) 0,550 plastic 1,54 5 56,0 -4,00 2 2,2311 (ASP) 1,272 3 Lens 2 -2,3896 (ASP) 0,988 plastic 1,54 4 56,0 3,18 4 -1,1499 (ASP) 0,030 5 Lens 3 1,4552 (ASP) 0,331 plastic 1,58 4 28,2 -5,99 6 0,9418 (ASP) 0,223 7 Aperture diaphragm Plano -0,095 8 Lens 4 1,6793 (ASP) 0,755 plastic 1,54 4 56,0 1,96 9 -2,4674 (ASP) 0,030 10 Lens 5 3,8284 (ASP) 0,280 plastic 1,66 9 19,5 -7,26 11 2,0778 (ASP) 0,344 12 aperture Plano 0,531 13 Lens 6 -3,3745 (ASP) 0,431 plastic 1,65 0 21,8 -7,64 14 -11,0675 (ASP) 0,400 15 filter Plano 0,300 Glass 1,51 7 64,2 - 16 Plano 0,131 17 Picture Plano - Note: Reference wavelength is 587.6 nm (d-line). An effective radius of the aperture S1 (surface 12) is 1.114 mm. TABLE 10B Aspherical coefficients Surface # 1 2 3 4 5 6 k = -9,00000E+01 1,73737E-04 -1,12961E+00 -6,74808E+00 -4,74684E+00 -6,95148E-01 A4 = 7,71253E-03 1,55747E-02 -8,23176E-02 -4,79398E-02 1,00328E-01 -7,77955E-01 A6 = -1,61504E-03 -1,61233E-02 8,04452E-02 5,66127E-02 3,97847E-01 1,94438E+00 A8 = 4,83841E-04 4,09323E-02 -4,90603E-02 -1,01286E-01 -1,72671E+00 2,15718E+00 A10 = -8,42878E-05 -3,78665E-02 1,83334E-02 1,59023E-01 2,84889E+00 -5,17754E+01 A12 = 7,23565E-06 1,83159E-02 -2,09626E-03 -1,20127E-01 -2,67565E+00 2,29327E+02 A14 = -2,37931E-07 -3,34169E-03 -2,18655E-04 3,67939E-02 9,96591E-01 -5,13977E+02 A16 = - - - - - 5,93920E+02 A18 = - - - - - -2,78045E+02 Surface # 8 9 10 11 13 14 k= 1,70924E+00 3,06861E+00 -8,21707E+01 -1,14860E+01 -3,25437E+01 -6,76579E+01 A4 = -2,86422E-02 -1,15745E+00 -1,21456E+00 -1,36898E-01 -2,03113E-01 -4,92105E-02 A6 = 2,93031E-03 7,09710E+00 6,00370E+00 3,33259E-01 -2,68731 E-02 -1,61103E-01 A8 = 1,69559E+00 -2,51855E+01 -2,23679E+01 -4,74157E-02 1,84197E-01 2,67346E-01 A10 = -8,43662E+00 5,20312E+01 4,85554E+01 -1,60027E+00 -1,14693E-01 -2,54676E-01 A12 = 1,55215E+01 -5,84936E+01 -6,08438E+01 3,88586E+00 -1,34672E-01 1,56744E-01 A14 = -1,02114E+01 2,79396E+01 3,49270E+01 -3,86721E+00 3,16411E-01 -6,22197E-02 A16 = - - -3,63509E+00 1,45005E+00 -2,40354E-01 1,59437E-02 A18 = - - - - 8,21357E-02 -2,50405E-03 A20 = - - - - -1,06604E-02 1,86531E-04

[0214] In the 10th embodiment, the equation of the aspherical surface profiles of the above-mentioned lens elements is the same as that of the 1st embodiment. Also, the definitions of these parameters, which are listed in the following Table 10C, are the same as those given in the 1st embodiment with corresponding values for the 10th embodiment, so no further explanation will be given in this regard.

[0215] In addition, these parameters can be calculated from Table 10A and Table 10B as the following values ​​and satisfy the following conditions: TABLE 10C Values ​​of optical and physical parameters / definitions f[mm] 1,85 f / |R11|+f / |R12| 0,71 Fno 2,32 (R3+R4) / (R3-R4) 2,86 HFOV [degree] 74,9 ATmax / f 0,69 FOV [degrees] 149,9 BL / TL 0,13 TL / lmgH 2,65 SL / TL 0,48 tan(HFOV) -0,58 TD / T56 6,48 TD / EPD 7,12 T23 / T12 0,024 TD / f 3,07 T56 / T34 6,84 |f / fj|max 0,94 Vmin 19,5 f / f3 -0,31 V3+V5 47,7 f / f5 -0,25 Nmax 1,669 f / f12 0,44 Y1R1 / Y6R2 1,73 f / f45 0,78 Y2R1 / Y5R2 1,37 11. Embodiment

[0216] Fig. 21 is a schematic view of an image acquisition unit according to the 11th embodiment of the present disclosure. Fig. Fig. 22 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit according to the 11th embodiment. Fig.21, the image capture unit 11 includes the photographing optical lens assembly (its reference numeral is omitted) of the present disclosure and an image sensor IS. The photographing optical lens assembly includes, in order from an object side to an image side along an optical path, a first lens element E1, a second lens element E2, a third lens element E3, an aperture stop ST, a fourth lens element E4, a fifth lens element E5, a stop S1, a sixth lens element E6, a filter E7, and an image surface IMG. The photographing optical lens assembly includes six lens elements (E1, E2, E3, E4, E5, and E6), and no additional lens element is disposed between each of the adjacent six lens elements.

[0217] The first lens element E1 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The first lens element E1 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical.

[0218] The second lens element E2 with positive refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The second lens element E2 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The image-side surface of the second lens element E2 has an inflection point.

[0219] The third lens element E3 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The third lens element E3 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the third lens element E3 has one inflection point. The image-side surface of the third lens element E3 has two inflection points.

[0220] The fourth lens element E4 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The image-side surface of the fourth lens element E4 has an inflection point.

[0221] The fifth lens element E5 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The fifth lens element E5 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the fifth lens element E5 has an inflection point. The object-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof.

[0222] The sixth lens element E6 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the sixth lens element E6 has an inflection point. The image-side surface of the sixth lens element E6 has an inflection point. The image-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof.

[0223] The filter E7 is made of glass and is located between the sixth lens element E6 and the image surface IMG. It does not affect the focal length of the photographing optical lens assembly. The image sensor IS is located on or near the image surface IMG of the photographing optical lens assembly.

[0224] In this embodiment, a minimum value among maximum effective radii of all lens surfaces of the photographing optical lens assembly is Ymin, and a maximum effective radius of the object-side surface of the fourth lens element E4 is Ymin.

[0225] The detailed optical data of the 11th embodiment are shown in Table 11A and the data of the aspherical surfaces are shown in Table 11B below. TABLE 11A 11. Embodiment f = 1.89 mm, Fno = 2.35, HFOV = 72.9 degrees Surface # radius of curvature thickness material index Abbe # Focal length 0 object infinity infinity 1 Lens 1 27,0286 (ASP) 0,550 plastic 1,544 56,0 -4,46 2 2,2085 (ASP) 1,324 3 Lens 2 -2,3815 (ASP) 0,994 plastic 1,544 56,0 3,20 4 -1,1536 (ASP) 0,040 5 Lens 3 1,6524 (ASP) 0,384 plastic 1,615 25,3 -5,91 6 1,0357 (ASP) 0,215 7 Aperture diaphragm Plano -0,086 8 Lens 4 1,7387 (ASP) 0,737 plastic 1,544 56,0 2,01 9 -2,4937 (ASP) 0,040 10 Lens 5 4,7500 (ASP) 0,280 plastic 1,669 19,5 -8,18 11 2,4834 (ASP) 0,430 12 aperture Plano 0,340 13 Lens 6 -10,7941 (ASP) 0,513 plastic 1,639 23,5 -6,11 14 6,2258 (ASP) 0,400 15 filter Plano 0,300 Glass 1,517 64,2 - 16 Plano 0,140 17 Picture Plano - Note: Reference wavelength is 587.6 nm (d-line). An effective radius of the aperture S1 (surface 12) is 1.201 mm. TABLE 11B Aspherical coefficients Surface # 1 2 3 4 5 6 k = 4,32927E+01 1,50735E-01 -1,51087E+00 -6,41263E+00 -5,54147E+00 -5,39403E-01 A4 = -3,93039E-05 4,40257E-03 -6,63604E-02 -4,14573E-02 1,27705E-01 -6,61046E-01 A6 = 1,40185E-03 -4,46528E-03 6,42828E-02 1,52268E-02 8,13279E-02 9,57336E-01 A8 = -3,75440E-04 1,56325E-02 -3,07662E-02 1,53756E-02 -7,01191E-01 7,73742E+00 A10 = 4,74786E-05 -1,23650E-02 1,59222E-03 -2,61154E-02 1,06312E+00 -7,38896E+01 A12 = -2,97850E-06 5,37178E-03 4,69975E-03 1,67546E-02 -1,07782E+00 2,91412E+02 A14 = 8,13990E-08 -9,15935E-04 -1,24593E-03 -3,43227E-03 4,62896E-01 -6,31399E+02 A16 = - - - - - 7,26186E+02 A18 = - - - - - -3,43926E+02 Surface # 8 9 10 11 13 14 k= 1,82457E+00 1,38302E+00 -8,95026E+01 -1,98201E+01 -2,03948E+01 6,20773E+00 A4 = -6,81587E-02 -1,04161E+00 -1,17672E+00 -1,73832E-01 -2,59681E-01 -2,08843E-01 A6 = 2,58352E-01 6,47471E+00 5,76144E+00 6,62470E-01 2,96480E-01 1,48873E-01 A8 = 7,01512E-01 -2,38052E+01 -2,10272E+01 -1,36810E+00 -6,50947E-01 -1,40690E-01 A10 = -5,60572E+00 5,15088E+01 4,46364E+01 1,55066E+00 1,24430E+00 1,07143E-01 A12 = 1,19070E+01 -6,00569E+01 -5,23395E+01 -4,53489E-01 -1,57796E+00 -5,52968E-02 A14 = -8,81773E+00 2,93672E+01 2,48872E+01 -6,85229E-01 1,27436E+00 1,71724E-02 A16 = - - 8,60750E-01 4,86219E-01 -6,15305E-01 -2,54657E-03 A18 = - - - - 1,59640E-01 2,54591E-05 A20 = - - - - -1,69610E-02 2,40019E-05

[0226] In the 11th embodiment, the equation of the aspherical surface profiles of the above-mentioned lens elements is the same as the equation of the 1st embodiment. The definitions of these parameters, listed in Table 11C below, are also the same as those given in the 1st embodiment, with corresponding values ​​for the 11th embodiment, so no further explanation is given in this regard.

[0227] In addition, these parameters can be calculated from Table 11A and Table 11B as the following values ​​and satisfy the following conditions: TABLE 11C Values ​​of optical and physical parameters / definitions f[mm] 1,89 f / |R11|+f / |R12| 0,48 Fno 2,35 (R3+R4) / (R3-R4) 2,88 HFOV [degree] 72,9 ATmax / f 0,70 FOV [degrees] 145,9 BL / TL 0,13 TL / lmgH 2,71 SL / TL 0,47 tan(HFOV) -0,68 TD / T56 7,48 TD / EPD 7,16 T23 / T12 0,030 TD / f 3,05 T56 / T34 5,97 |f / fj|max 0,94 Vmin 19,5 f / f3 -0,32 V3+V5 44,8 f / f5 -0,23 Nmax 1,669 f / f12 0,47 Y1R1 / Y6R2 1,72 f / f45 0,79 Y2R1 / Y5R2 1,56 12. Embodiment

[0228] Fig. 23 is a schematic view of an image acquisition unit according to the 12th embodiment of the present disclosure. Fig.Fig. 24 shows, in order from left to right, spherical aberration curves, astigmatic field curves, and a distortion curve of the image sensing unit according to the 12th embodiment. Fig. 23, the image capture unit 12 includes the photographing optical lens assembly (its reference numeral is omitted) of the present disclosure and an image sensor IS. The photographing optical lens assembly includes, in order from an object side to an image side along an optical path, a first lens element E1, a second lens element E2, a third lens element E3, an aperture stop ST, a fourth lens element E4, a fifth lens element E5, a stop S1, a sixth lens element E6, a filter E7, and an image surface IMG. The photographing optical lens assembly includes six lens elements (E1, E2, E3, E4, E5, and E6), and no additional lens element is disposed between each of the adjacent six lens elements.

[0229] The first lens element E1 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The first lens element E1 is made of glass material and has an object-side surface and an image-side surface, both of which are aspherical. The image-side surface of the first lens element E1 has an inflection point.

[0230] The second lens element E2 with positive refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The second lens element E2 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical.

[0231] The third lens element E3 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The third lens element E3 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the third lens element E3 has an inflection point. The image-side surface of the third lens element E3 has an inflection point.

[0232] The fourth lens element E4 with positive refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is convex in a paraxial region thereof. The fourth lens element E4 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the fourth lens element E4 has an inflection point.

[0233] The fifth lens element E5 with negative refractive power has an object-side surface that is convex in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The fifth lens element E5 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the fifth lens element E5 has an inflection point. The object-side surface of the fifth lens element E5 has a critical point in an off-axis region thereof.

[0234] The sixth lens element E6 with negative refractive power has an object-side surface that is concave in a paraxial region thereof and an image-side surface that is concave in a paraxial region thereof. The sixth lens element E6 is made of plastic material and has an object-side surface and an image-side surface, both of which are aspherical. The object-side surface of the sixth lens element E6 has one inflection point. The image-side surface of the sixth lens element E6 has two inflection points. The image-side surface of the sixth lens element E6 has a critical point in an off-axis region thereof.

[0235] The filter E7 is made of glass and is located between the sixth lens element E6 and the image surface IMG. It does not affect the focal length of the photographing optical lens assembly. The image sensor IS is located on or near the image surface IMG of the photographing optical lens assembly.

[0236] In this embodiment, a minimum value among maximum effective radii of all lens surfaces of the photographing optical lens assembly is Ymin, and a maximum effective radius of the image-side surface of the third lens element E3 is Ymin.

[0237] The detailed optical data of the 12th embodiment are shown in Table 12A and the data of the aspherical surfaces are shown in Table 12B below. TABLE 12A 12. Embodiment f = 2.04 mm, Fno = 2.00, HFOV = 62.4 degrees Surface # radius of curvature thickness material index Abbe # Focal length 0 object infinity infinity 1 Lens 1 8,2929 (ASP) 0,600 Glass 1,640 60,2 -4,91 2 2,2139 (ASP) 1,627 3 Lens 2 -2,9845 (ASP) 0,916 plastic 1,544 56,0 3,62 4 -1,3155 (ASP) 0,052 5 Lens 3 1,6024 (ASP) 0,409 plastic 1,669 19,5 -5,66 6 1,0107 (ASP) 0,256 7 Aperture diaphragm Plano -0,065 8 Lens 4 1,9225 (ASP) 0,912 plastic 1,544 56,0 2,05 9 -2,2222 (ASP) 0,054 10 Lens 5 5,9303 (ASP) 0,320 plastic 1,650 21,8 -11,30 11 3,2111 (ASP) 0,309 12 aperture Plano 0,496 13 Lens 6 -24,8139 (ASP) 0,454 plastic 1,562 44,6 -5,99 14 3,9159 (ASP) 0,400 15 filter Plano 0,300 Glass 1,517 64,2 - 16 Plano 0,166 17 Picture Plano - Note: Reference wavelength is 587.6 nm (d-line). An effective radius of the aperture S1 (surface 12) is 1.308 mm. TABLE 12B Aspherical coefficients Surface # 1 2 3 4 5 6 k= -3,63002E-01 1,59724E-01 -2,17662E+00 -6,35133E+00 -5,98867E+00 -3,39177E-01 A4 = -4,13066E-03 -4,90417E-04 -1,49710E-02 -3,23994E-02 1,01104E-01 -5,27462E-01 A6 = 2,50953E-03 5,88036E-03 1,51919E-02 1,04073E-02 -3,61430E-02 1,00396E+00 A8 = -5,05745E-04 2,21218E-03 -1,46231 E-02 -5,15852E-03 -1,15090E-01 -1,28146E+00 A10 = 4,13865E-05 -1,86440E-03 6,37616E-03 2,77688E-03 3,37161E-02 -2,88039E+00 A12 = -1,25395E-06 1,00594E-03 -1,68889E-03 -1,03905E-03 6,05330E-02 1,36136E+01 A14 = 1,09258E-08 -2,33310E-04 2,20363E-04 1,71426E-04 -5,65437E-02 -2,14772E+01 A16 = - - - - - 1,43831E+01 A18 = - - - - - -2,68517E+00 Surface # 8 9 10 11 13 14 k= 1,17139E+00 3,86785E-01 -4,92633E+01 -3,71800E+01 -6,86005E+01 1,21955E+00 A4 = -8,93271E-03 -4,73339E-01 -6,72365E-01 -5,61917E-02 -1,80776E-01 -1,66954E-01 A6 = 1,93261E-01 1,76017E+00 1,82722E+00 -7,30240E-02 1,94897E-01 1,09941E-01 A8 = -5,28918E-01 -4,06765E +00 -4,52353E+00 5,13188E-01 -4,56706E-01 -1,38844E-01 A10 = 7,06493E-01 5,55262E+00 6,82323E+00 -1,08173E+00 7,49512E-01 1,43485E-01 A12 = -6,07850E-01 -4,14160E+00 -6,12610E+00 1,22299E+00 -7,15072E-01 -9,89684E-02 A14 = 2,15713E-01 1,27321E+00 2,65602E+00 -6,69234E-01 3,91677E-01 4,39979E-02 A16 = - - -2,78047E-01 1,38626E-01 -1,16834E-01 -1,22667E-02 A18 = - - - - 1,66728E-02 1,95530E-03 A20 = - - - - -7,78315E-04 -1,34574E-04

[0238] In the 12th embodiment, the equation of the aspherical surface profiles of the above-mentioned lens elements is the same as the equation of the 1st embodiment. The definitions of these parameters, shown in Table 12C below, are also the same as those given in the 1st embodiment, with corresponding values ​​for the 12th embodiment, so no further explanation is given in this regard.

[0239] In addition, these parameters can be calculated from Table 12A and Table 12B as the following values ​​and satisfy the following conditions: TABLE 12C Values ​​of optical and physical parameters / definitions f [mm] 2,04 f / |R11|+f / |R12| 0,60 Fno 2,00 (R3+R4) / (R3-R4) 2,58 HFOV [degree] 62,4 ATmax / f 0,80 FOV [Grad] 124,8 BL / TL 0,12 TL / lmgH 3,20 SL / TL 0,46 tan(HFOV) -1,44 TD / T56 7,88 TD / EPD 6,21 T23 / T12 0,032 TD / f 3,11 T56 / T34 4,21 |f / fj|max 0,99 Vmin 19,5 f / f3 -0,36 V3+V5 41,3 f / f5 -0,18 Nmax 1,669 f / f12 0,42 Y1R1 / Y6R2 1,65 f / f45 0,89 Y2R1 / Y5R2 1,46 13. Embodiment

[0240] Fig. 25 is a perspective view of an image sensing unit according to the 13th embodiment of the present disclosure. In this embodiment, an image sensing unit 100 is a camera module including a lens unit 101, a driving device 102, an image sensor 103, and an image stabilizer 104. The lens unit 101 includes the photographing optical lens assembly as disclosed in the first embodiment, a housing, and a support member (the reference numerals of which are omitted) for supporting the photographing optical lens assembly. However, the lens unit 101 may alternatively be provided with the photographing optical lens assembly as disclosed in other embodiments of the present disclosure, and the present disclosure is not limited thereto.The imaging light converges in the lens unit 101 of the image capture unit 100 to form an image, the drive device 102 is used to focus the image on the image sensor 103, and the formed image is then digitally transmitted to another electronic component for further processing.

[0241] The drive device 102 may have an autofocus function, and by using voice coil motors (VCM), microelectromechanical systems (MEMS), piezoelectric systems, or shape memory alloys, various configurations can be obtained. The drive device 102 is advantageous for obtaining a better imaging position of the lens unit 101, so that a clear image of the imaged object can be captured by the lens unit 101 at different distances from the object. The image sensor 103 (e.g., CMOS or CCD), which can have high light sensitivity and low noise, is arranged on the image surface of the photographic optical lens assembly to achieve higher image quality.

[0242] The image stabilizer 104, such as an accelerometer, a gyro sensor, and a Hall-effect sensor, is configured to cooperate with the drive device 102 to provide optical image stabilization (OIS). The drive device 102, which cooperates with the image stabilizer 104, is advantageous for compensating for pan and tilt movements of the lens unit 101 to reduce motion blur during exposure. In some cases, compensation can be provided by electronic image stabilization (EIS) using image processing software, thereby improving image quality during motion or low-light conditions. 14. Embodiment

[0243] Fig. 26 is a perspective view of an electronic device according to the 14th embodiment of the present disclosure. Fig. 27 is another perspective view of the electronic device in Fig. 26. Fig. 28 is a block diagram of the electronic device in Fig. 26.

[0244] In this embodiment, an electronic device 200 is a smartphone that includes the image capture unit 100 as disclosed in the 13th embodiment, an image capture unit 100a, an image capture unit 100b, an image capture unit 100c, an image capture unit 100d, an image capture unit 100e, a flash module 201, a focus assist module 202, an image signal processor 203, a display module 204, and an image software processor 205. The image capture unit 100, the image capture unit 100a, and the image capture unit 100b are arranged on the same side of the electronic device 200, and each of the image capture units 100, 100a, and 100b has a single focal point. The focus assist module 202 may be a laser distance meter or a ToF (time of flight) module, but the present disclosure is not limited thereto.The image capture unit 100c, the image capture unit 100d, the image capture unit 100e, and the display module 204 are arranged on the opposite side of the electronic device 200, and the display module 204 may be a user interface, so the image capture units 100c, 100d, and 100e may be front-facing cameras of the electronic device 200 for taking selfies, but the present disclosure is not limited thereto. Furthermore, each of the image capture units 100a, 100b, 100c, 100d, and 100e may include the photographing optical lens assembly of the present disclosure and have a similar configuration to the image capture unit 100. Specifically, each of the image sensing units 100a, 100b, 100c, 100d, and 100e may include a lens unit, a driving device, an image sensor, and an image stabilizer, as well as a light folding element for folding the optical path.Furthermore, each lens unit of the image capturing units 100a, 100b, 100c, 100d, and 100e may include the photographing optical lens assembly of the present disclosure, a housing, and a support member for holding the photographing optical lens assembly.

[0245] The image capture unit 100 is a wide-angle image capture unit, the image capture unit 100a is a telephoto image capture unit with an optical path folding function, the image capture unit 100b is an ultra-wide-angle image capture unit, the image capture unit 100c is a wide-angle image capture unit, the image capture unit 100d is an ultra-wide-angle image capture unit, and the image capture unit 100e is a ToF image capture unit. In this embodiment, the image capture units 100, 100a, and 100b have different fields of view, so that the electronic device 200 can have different magnification ratios to meet the requirements of the optical zoom functionality. Furthermore, the image capture unit 100e can determine depth information of the imaged object. Furthermore, the light folding configuration of the image capture unit 100a can, for example, be one of the Fig. 34 to Fig. 36 shown configurations, for which reference is made to the preceding descriptions relating to the Fig. 34 to Fig. 36, and the details thereof will not be repeated. Furthermore, each of the image acquisition units 100, 100b, 100c, 100d, and 100e may have a light folding configuration, for example, corresponding to one of the Fig. 34 to Fig. 36 shown configurations, for which reference is made to the preceding descriptions relating to the Fig. 34 to Fig. 36. In this embodiment, the electronic device 200 includes a plurality of image capture units 100, 100a, 100b, 100c, 100d, and 100e, but the present disclosure is not limited to the number and arrangement of the image capture units.

[0246] When a user captures images of an object 206, the light beams converge in the image capture unit 100, the image capture unit 100a, or the image capture unit 100b to create images, and the flash module 201 is activated to amplify the light. The focus assist module 202 detects the distance of the imaged object 206 to achieve fast automatic focusing. The image signal processor 203 is configured to optimize the captured image to improve image quality. The light beam emitted by the focus assist module 202 can be either conventional infrared light or laser light. Furthermore, the light beams can converge in the image capture unit 100c, 100d, or 100e to create images.The display module 204 may include a touchscreen, and the user may interact with the display module 204 and the image software processor 205, which has multiple functions for image acquisition and complete image processing. Alternatively, the user may capture images via a physical button. The image processed by the image software processor 205 may be displayed on the display module 204. 15. Embodiment

[0247] Fig. 29 is a schematic view of an electronic device according to the 15th embodiment of the present disclosure. Fig. 30 is another schematic view of the electronic device in Fig. 29.

[0248] In this embodiment, an electronic device 300 is a smartphone that includes the image capture unit 100 as disclosed in the 13th embodiment, an image capture unit 100f, an image capture unit 100g, an image capture unit 100h, and a display module 301. As shown in Fig. 29, the image capture unit 100, the image capture unit 100f, and the image capture unit 100g are arranged on the same side of the electronic device 300, and each of the image capture units 100, 100f, and 100g has a single focal point. As shown in Fig. As shown in FIG. 30, the image capture unit 100h and the display module 301 are arranged on the opposite side of the electronic device 300, so that the image capture unit 100h may be a front-facing camera of the electronic device 300 for taking selfies, but the present disclosure is not limited thereto. Furthermore, each of the image capture units 100f, 100g, and 100h may include the photographing optical lens assembly of the present disclosure and have a similar configuration to the image capture unit 100. Specifically, each of the image capture units 100f, 100g, and 100h may include a lens unit, a driving device, an image sensor, and an image stabilizer.In addition, each lens unit of the image capturing units 100f, 100g, and 100h may include the photographing optical lens assembly of the present disclosure, a housing, and a support member for holding the photographing optical lens assembly.

[0249] Image capture unit 100 is a wide-angle image capture unit, image capture unit 100f is a telephoto image capture unit, image capture unit 100g is an ultra-wide-angle image capture unit, and image capture unit 100h is a wide-angle image capture unit. In this embodiment, image capture units 100, 100f, and 100g have different fields of view, so that electronic device 300 can have different magnification ratios to meet the requirements of optical zoom functionality. In this embodiment, electronic device 300 includes multiple image capture units 100, 100f, 100g, and 100h, but the present disclosure is not limited to the number and arrangement of the image capture units. 16. Embodiment

[0250] Fig. 31 is a perspective view of an electronic device according to the 16th embodiment of the present disclosure.

[0251] In this embodiment, an electronic device 400 is a smartphone that includes the image capture unit 100 as disclosed in the 13th embodiment, an image capture unit 100i, an image capture unit 100j, an image capture unit 100k, an image capture unit 100m, an image capture unit 100n, an image capture unit 100p, an image capture unit 100q, an image capture unit 100r, a flash module 401, a focus assist module, an image signal processor, a display module, and an image software processor (not shown). The image capture units 100, 100i, 100j, 100k, 100m, 100n, 100p, 100q and 100r are arranged on the same side of the electronic device 400, while the display module is arranged on the opposite side of the electronic device 400.Furthermore, each of the image capture units 100i, 100j, 100k, 100m, 100n, 100p, 100q, and 100r may include the photographing optical lens assembly of the present disclosure and have a similar configuration to the image capture unit 100, and the details thereof will not be repeated.

[0252] The image acquisition unit 100 is a wide-angle image acquisition unit, the image acquisition unit 100i is a telephoto image acquisition unit with an optical path folding function, the image acquisition unit 100j is a telephoto image acquisition unit with an optical path folding function, the image acquisition unit 100k is a wide-angle image acquisition unit, the image acquisition unit 100m is an ultra-wide-angle image acquisition unit, the image acquisition unit 100n is an ultra-wide-angle telephoto image acquisition unit, the image acquisition unit 100p is a telephoto image acquisition unit, the image acquisition unit 100q is a telephoto image acquisition unit, and the image acquisition unit 100r is a ToF image acquisition unit.In this embodiment, the image capture units 100, 100i, 100j, 100k, 100m, 100n, 100p, and 100q have different fields of view so that the electronic device 400 can have different magnification ratios to meet the requirements of the optical zoom functionality.

[0253] In addition, the image acquisition unit 100r can determine depth information of the imaged object. Furthermore, the light folding configuration of the image acquisition units 100i and 100j can, for example, be one of the Fig. 34 to Fig. 36 shown structures, for which reference is made to the previous descriptions relating to the Fig. 34 to Fig.36, and the details in this regard will not be repeated. In this embodiment, the electronic device 400 includes a plurality of image capture units 100, 100i, 100j, 100k, 100m, 100n, 100p, 100q, and 100r, but the present disclosure is not limited to the number and arrangement of the image capture units. When a user captures images of an object, the light beams converge in the image capture unit 100, 100i, 100j, 100k, 100m, 100n, 100p, 100q, or 100r to form images, and the flash module 401 is activated to amplify the light. The subsequent processes are performed in a similar manner to the above-mentioned embodiments, and the details thereof will not be repeated.

[0254] The smartphone in the embodiments is only an example of illustrating the image sensing unit of the present disclosure installed in an electronic device, and the present disclosure is not limited thereto. The image sensing unit can optionally be applied to moving-focus optical systems. Furthermore, the photographing optical lens assembly of the image sensing unit features good aberration correction capability and high image quality, and can be applied to 3D image sensing applications in products such as digital cameras, mobile devices, digital tablets, smart TVs, network monitoring devices, dashboard cameras, vehicle rearview cameras, multi-camera devices, image recognition systems, motion-sensitive input devices, unmanned aerial vehicles, wearable devices, portable video recorders, and other electronic imaging devices.

[0255] The foregoing description has been made with reference to specific embodiments for the purpose of illustration. It should be noted that TABLES 1A-12C show different data for the various embodiments; however, the data for the various embodiments are derived from experiments. The embodiments were chosen and described in order to best explain the principles of the disclosure and their practical applications, and thus to enable others skilled in the art to best utilize the disclosure and various embodiments with various modifications as are suited to the particular use. The above-illustrated embodiments and the accompanying drawings are exemplary and not intended to be exhaustive or to limit the scope of the present disclosure to the precise forms disclosed. Many modifications and variations are possible in light of the above teachings.

Claims

[1] A photographing optical lens assembly comprising six lens elements (E1, E2, E3, E4, E5 and E6), wherein the six lens elements (E1, E2, E3, E4, E5 and E6) are, in order from an object side to an image side along an optical path, a first lens element (E1), a second lens element (E2), a third lens element (E3), a fourth lens element (E4), a fifth lens element (E5) and a sixth lens element (E6), and each of the six lens elements (E1, E2, E3, E4, E5 and E6) has an object-side surface facing the object side and an image-side surface facing the image side; wherein the first lens element (E1) has a negative refractive power, the object-side surface of the second lens element (E2) is concave in a paraxial region thereof, and the image-side surface of the third lens element (E3) is concave in a paraxial region thereof; and wherein an axial distance between the object-side surface of the first lens element (E1) and the image-side surface of the sixth lens element (E6) is TD, a focal length of the photographing optical lens assembly is f, a focal length of the fifth lens element (E5) is f5, an axial distance between the fifth lens element (E5) and the sixth lens element (E6) is T56, an axial distance between the object-side surface of the first lens element (E1) and an image surface (IMG) is TL, a maximum image height of the photographing optical lens assembly is ImgH, and the following conditions are met: 2.20 <TD / f<4,50; −0.80 <f / f5<0,20; 1.00 <TD / T56<35,00; und 0.50 <TL / ImgH<4,00. [2] A photographing optical lens assembly according to claim 1, wherein the third lens element (E3) has a negative refractive power, the object-side surface and the image-side surface of the sixth lens element (E6) are both aspherical, and at least one of the object-side surface and the image-side surface of the sixth lens element (E6) has at least one inflection point (P). [3] A photographing optical lens assembly according to claim 1, wherein the image-side surface of the first lens element (E1) is concave in a paraxial region thereof and the image-side surface of the fifth lens element (E5) is concave in a paraxial region thereof. [4] The photographing optical lens assembly according to claim 1, wherein a maximum field of view of the photographing optical lens assembly is FOV, an F-number of the photographing optical lens assembly is Fno, and the following conditions are satisfied: 125.0 degrees <FOV; und 1.50 <Fno<4,00. [5] A photographing optical lens assembly according to claim 1, wherein the axial distance between the object-side surface of the first lens element (E1) and the image surface (IMG) is TL, the maximum image height of the photographing optical lens assembly is ImgH, and the following condition is satisfied: 0.90 <TL / ImgH<3,50. [6] A photographing optical lens assembly according to claim 1, wherein a minimum value among Abbe numbers of all lens elements of the photographing optical lens assembly is Vmin and the following condition is satisfied: 5.0 <Vmin<21,0. [7] A photographing optical lens assembly according to claim 1, wherein the focal length of the photographing optical lens assembly is f, a composite focal length of the fourth lens element (E4) and the fifth lens element (E5) is f45, and the following condition is satisfied: 0.45 <f / f45<1,20. [8] A photographing optical lens assembly according to claim 1, wherein the focal length of the photographing optical lens assembly is f, a radius of curvature of the object-side surface of the sixth lens element (E6) is R11, a radius of curvature of the image-side surface of the sixth lens element (E6) is R12, and the following condition is satisfied: f / |R11|+f / |R12|<4.

00. [9] A photographing optical lens assembly according to claim 1, wherein a maximum effective radius of the object-side surface of the first lens element (E1) is Y1R1, a maximum effective radius of the image-side surface of the sixth lens element (E6) is Y6R2, and the following condition is satisfied: 0.60 <Y1R1 / Y6TR2<8,00. [10] Image acquisition unit (1, 100), comprising: the photographing optical lens assembly according to claim 1; and an image sensor (IS, 103) arranged on the image surface (IMG) of the photographing optical lens assembly. [11] An electronic device (200) comprising: the image capture unit (1, 100) according to claim 10. [12] A photographing optical lens assembly comprising six lens elements (E1, E2, E3, E4, E5 and E6), wherein the six lens elements (E1, E2, E3, E4, E5 and E6) are, in order from an object side to an image side along an optical path, a first lens element (E1), a second lens element (E2), a third lens element (E3), a fourth lens element (E4), a fifth lens element (E5) and a sixth lens element (E6), and each of the six lens elements (E1, E2, E3, E4, E5 and E6) has an object-side surface facing the object side and an image-side surface facing the image side; wherein the first lens element (E1) has a negative refractive power, the object-side surface of the second lens element (E2) is concave in a paraxial region thereof, the image-side surface of the third lens element (E3) is concave in a paraxial region thereof, the fifth lens element (E5) has a negative refractive power, the image-side surface of the sixth lens element (E6) is concave in a paraxial region thereof, and the image-side surface of the sixth lens element (E6) has at least one inflection point (P); and wherein a focal length of the photographing optical lens assembly is f, a focal length of the first lens element (E1) is f1, a focal length of the second lens element (E2) is f2, a focal length of the third lens element (E3) is f3, a focal length of the fourth lens element (E4) is f4, a focal length of the fifth lens element (E5) is f5, a focal length of the sixth lens element (E6) is f6, a composite focal length of the fourth lens element (E4) and the fifth lens element (E5) is f45, a focal length of the j-th lens element is fj, a maximum absolute value of f / fj is |f / fj|max, an axial distance between the first lens element (E1) and the second lens element (E2) is T12, an axial distance between the second lens element (E2) and the third lens element (E3) is T23, an axial distance between the third lens element (E3) and the fourth lens element (E4) is T34,an axial distance between the fifth lens element (E5) and the sixth lens element (E6) is T56, 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, and the following conditions are met: 0.45 <f / f45<1,00; 0.70 <T56 / T34<20,00; T23 <T12; −5.00<(R3+R4) / (R3−R4); and |f / fj|max<1.50, where j=1,2,3,4,5 or 6. [13] A photographing optical lens assembly according to claim 12, wherein the third lens element (E3) has a negative refractive power, the fourth lens element (E4) has a positive refractive power, the image-side surface of the first lens element (E1) is concave in a paraxial region thereof, and the image-side surface of the fourth lens element (E4) is convex in a paraxial region thereof. [14] A photographing optical lens assembly according to claim 12, wherein the second lens element (E2) has a positive refractive power. [15] A photographing optical lens assembly according to claim 12, wherein the object-side surface and the image-side surface of the sixth lens element (E6) are both aspherical, and the image-side surface of the sixth lens element (E6) has at least one critical point (C) in an off-axis region thereof; and wherein 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 following condition is satisfied: 1.00<(R3+R4) / (R3−R4)<80.

00. [16] A photographing optical lens assembly according to claim 12, further comprising an aperture stop (ST), wherein an axial distance between the image-side surface of the sixth lens element (E6) and an image surface (IMG) is BL, an axial distance between the object-side surface of the first lens element (E1) and the image surface (IMG) is TL, an axial distance between the aperture stop (ST) and the image surface (IMG) is SL, and the following conditions are satisfied: BL / TL<0.22; and 0.30 <SL / TL<0,80. [17] A photographing optical lens assembly according to claim 12, wherein a maximum field of view of the photographing optical lens assembly is FOV, an axial distance between the object-side surface of the first lens element (E1) and an image surface (IMG) is TL, a maximum image height of the photographing optical lens assembly is ImgH, and the following conditions are satisfied: 110.0 degrees <FOV; und 0.50 <TL / ImgH<4,00. [18] A photographing optical lens assembly according to claim 12, wherein the focal length of the photographing optical lens assembly is f, a composite focal length of the first lens element (E1) and the second lens element (E2) is f12, and the following condition is satisfied: f / f12<0.

75. [19] A photographing optical lens assembly according to claim 12, wherein an axial distance between the object-side surface of the first lens element (E1) and the image-side surface of the sixth lens element (E6) is TD, the focal length of the photographing optical lens assembly is f, the axial distance between the first lens element (E1) and the second lens element (E2) is T12, the axial distance between the second lens element (E2) and the third lens element (E3) is T23, and the following conditions are satisfied: 1.40 <TD / f<6,00; und T23 / T12<0.

80. [20] A photographing optical lens assembly according to claim 12, wherein an Abbe number of the third lens element (E3) is V3, an Abbe number of the fifth lens element (E5) is V5, a maximum value among refractive indices of all lens elements of the photographing optical lens assembly is Nmax, and the following conditions are satisfied: 10.0 <V3+V5<80,0; und 1,660 <Nmax. [21] A photographing optical lens assembly according to claim 12, wherein a minimum value among maximum effective radii of all lens surfaces of the photographing optical lens assembly is Ymin, and a maximum effective radius of one of the object-side surface of the third lens element (E3), the image-side surface of the third lens element (E3), the object-side surface of the fourth lens element (E4), and the image-side surface of the fourth lens element (E4) is Ymin. [22] A photographing optical lens assembly comprising six lens elements (E1, E2, E3, E4, E5 and E6), wherein the six lens elements (E1, E2, E3, E4, E5 and E6) are, in order from an object side to an image side along an optical path, a first lens element (E1), a second lens element (E2), a third lens element (E3), a fourth lens element (E4), a fifth lens element (E5) and a sixth lens element (E6), and each of the six lens elements (E1, E2, E3, E4, E5 and E6) has an object-side surface facing the object side and an image-side surface facing the image side; wherein the first lens element (E1) has a negative refractive power, the object-side surface of the second lens element (E2) is concave in a paraxial region thereof, the image-side surface of the third lens element (E3) is concave in a paraxial region thereof, and the fifth lens element (E5) has a negative refractive power; and wherein an axial distance between the object-side surface of the first lens element (E1) and the image-side surface of the sixth lens element (E6) is TD, a focal length of the photographing optical lens assembly is f, a focal length of the third lens element (E3) is f3, an axial distance between the fifth lens element (E5) and the sixth lens element (E6) is T56, an axial distance between the object-side surface of the first lens element (E1) and an image surface (IMG) is TL, a maximum image height of the photographing optical lens assembly is ImgH, and the following conditions are satisfied: 2.20 <TD / f<4,50; −1.50 <f / f3<0,30; 1.00 <TD / T56<19,00; und 0.50 <TL / ImgH<4,00. [23] A photographing optical lens assembly according to claim 22, wherein the image-side surface of the first lens element (E1) is concave in a paraxial region thereof, the image-side surface of the second lens element (E2) is convex in a paraxial region thereof, and the image-side surface of the fifth lens element (E5) is concave in a paraxial region thereof. [24] A photographing optical lens assembly according to claim 22, wherein a central thickness of the second lens element (E2) is CT2, an axial distance between the second lens element (E2) and the third lens element (E3) is T23, an axial distance between the third lens element (E3) and the fourth lens element (E4) is T34, the axial distance between the fifth lens element (E5) and the sixth lens element (E6) is T56, and the following conditions are satisfied: T34 <CT2; und T23 <T56. [25] A photographing optical lens assembly according to claim 22, wherein a maximum field of view of the photographing optical lens assembly is FOV, a maximum value among refractive indices of all lens elements of the photographing optical lens assembly is Nmax, and the following conditions are satisfied: −1.80 <tan(FOV)<0; und 1,660 <Nmax. [26] A photographing optical lens assembly according to claim 22, wherein the axial distance between the object-side surface of the first lens element (E1) and the image-side surface of the sixth lens element (E6) is TD, the focal length of the photographing optical lens assembly is f, the axial distance between the object-side surface of the first lens element (E1) and the image surface (IMG) is TL, the maximum image height of the photographing optical lens assembly is ImgH, and the following conditions are satisfied: 2.50 <TD / f<3,90; und 0.90 <TL / ImgH<3,50. [27] A photographing optical lens assembly according to claim 22, wherein the axial distance between the object-side surface of the first lens element (E1) and the image-side surface of the sixth lens element (E6) is TD, an entrance pupil diameter of the photographing optical lens assembly is EPD, and the following condition is satisfied: 5.00 <TD / EPD<8,50. [28] A photographing optical lens assembly according to claim 22, wherein a maximum value among axial distances between each of all adjacent lens elements of the photographing optical lens assembly is ATmax, the focal length of the photographing optical lens assembly is f, and the following condition is satisfied: 0 <ATmax / f<2,50. [29] A photographing optical lens assembly according to claim 22, wherein a maximum effective radius of the object-side surface of the second lens element (E2) is Y2R1, a maximum effective radius of the image-side surface of the fifth lens element (E5) is Y5R2, and the following condition is satisfied: 0.70 <Y2R1 / Y5R2<8,00. [30] A photographing optical lens assembly according to claim 22, wherein the axial distance between the object-side surface of the first lens element (E1) and the image-side surface of the sixth lens element (E6) is TD, the focal length of the photographing optical lens assembly is f, the focal length of the third lens element (E3) is f3, a focal length of the fifth lens element (E5) is f5, a composite focal length of the fourth lens element (E4) and the fifth lens element (E5) is f45, an axial distance between the third lens element (E3) and the fourth lens element (E4) is T34, 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 second lens element (E2) is R3, a radius of curvature of the image-side surface of the second lens element (E2) is R4,the axial distance between the object-side surface of the first lens element (E1) and the image surface (IMG) is TL, the maximum image height of the photographing optical lens assembly is ImgH, and the following conditions are met: 2.50≤TD / f≤3.47; −0.65≤f / f5≤−0.16; 6.48≤TD / T56≤10.05; −0.36≤f / f3≤0.04; 3.21≤T56 / T34≤7.08; 0.71≤f / f45≤0.92; 2.58≤(R3+R4) / (R3−R4)≤15.98; and 2.33≤TL / ImgH≤3.20.

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