BR102022022059A2 - OPTICAL LENS SET, IMAGE CAPTURE UNIT AND ELECTRONIC DEVICE - Google Patents

Abstract

An optical lens assembly includes seven lens elements that are, in order from one side of the object to one side of the image along an optical path: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. An object-side surface of the first lens element is concave in a paraxial region thereof. The third lens element has positive refractive power. An object-side surface of the sixth lens element is convex in a paraxial region thereof, and an image-side surface of the sixth lens element is concave in a paraxial region thereof. An image-side surface of the seventh lens element is concave in a paraxial region thereof, and the image-side surface of the seventh lens element has at least one inflection point.

Description

OPTICAL LENS SET, IMAGE CAPTURE UNIT AND ELECTRONIC DEVICE FUNDAMENTALS Field of Technique

[0001] The present disclosure relates to a set of optical lenses, an image capture unit and an electronic device, more particularly to a set of optical lenses and an image capture unit applicable to an electronic device.

Description of the Related Technique

[0002] With the development of semiconductor manufacturing technology, the performance of image sensors has improved and their pixel size has been reduced. Therefore, presenting high image quality becomes one of the indispensable characteristics of an optical system nowadays.

[0003] Furthermore, due to rapid changes in technology, electronic devices equipped with optical systems are tending towards multifunctionality for various applications, and therefore, the functionality requirements of optical systems have been increasing. However, it is difficult for a conventional optical system to strike a balance between requirements such as high image quality, low sensitivity, adequate aperture size, miniaturization and desirable field of view.

SUMMARY

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

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

[0006] When a radius of curvature of the image side surface of the sixth lens element is R12, a radius of curvature of the image side surface of the seventh lens element is R14, an Abbe number of the fourth lens element is V4 , and an Abbe number of the seventh lens element is V7, the following conditions are satisfied: 0.45 < R12/R14 < 12; and 1.30 < V7/V4 < 2.60.

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

[0008] The object side surface of the first lens element is concave in a paraxial region thereof. The third lens element has positive refractive power.

[0009] When the optical lens assembly further includes an aperture stop, an object-side surface curvature radius of the fifth lens element is R9, an image-side surface curvature radius of the sixth lens element is R12, a radius of curvature of the object-side surface of the seventh lens element is R13, a radius of curvature of the image-side surface of the seventh lens element is R14, a focal length of the optical lens assembly is f, a composite focal length of the first lens element and the second lens element is f12, 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 aperture stop and an imaging surface is SL, and a central thickness of the seventh lens element is CT7, the following conditions are satisfied:
-0.75 < R12/R14 <30;
f/f12 <-0.10;
0.03 <(R9+R13)/(R9-R13);
1.03 < T23/T34 <4.60;
1.60 <SL/f; It is
5.40 < f/CT7 < 9.50.

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

[0011] The object side surface of the first lens element is concave in a paraxial region thereof. The third lens element has positive refractive power. The fifth lens element has positive refractive power.

[0012] When a radius of curvature of the surface of the object side of the fifth lens element is R9, a radius of curvature of the surface of the image side of the fifth lens element is R10, a radius of curvature of the surface of the object side of the sixth lens element is R11, a radius of curvature of the image side surface of the sixth lens element is R12, a radius of curvature of the object side surface of the seventh lens element is R13, a radius of curvature of the surface on the image side of the seventh lens element is R14, a focal length of the optical lens assembly is f, a composite focal length of the fifth lens element and sixth lens element is f56, a composite focal length of the sixth lens element and of the seventh lens element is f67, 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, and a center thickness of the seventh lens element is CT7, the following conditions are satisfied:
CT7, the following conditions are satisfied:
-1.25 <R12/R14;
-1.50 < f/f56 <0.68;
-0.30 < f/f67 <1.70;
-0.85 < (R10+R11)/(R10-R11) <1.25;
(R9+R13)/(R9-R13) <3.00;
1.05 < T23/T34 <3.70; It is
f/CT7 < 11.5.

[0013] According to another aspect of the present disclosure, an optical lens assembly includes seven lens elements. The seven lens elements are, in order from one side of the object to one side of the image along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. Each of the seven lens elements has an object-side surface facing the object side and an image-side surface facing the image side.

[0014] The first lens element has negative refractive power, and the object-side surface of the first lens element is concave in a paraxial region thereof. The object side surface of the second lens element is convex in a paraxial region thereof. The third lens element has positive refractive power. The object-side surface of the sixth lens element is convex in a paraxial region thereof, and the image-side surface of the sixth lens element is concave in a paraxial region thereof. The object-side surface of the seventh lens element is convex in a paraxial region thereof, the image-side surface of the seventh lens element is concave in a paraxial region thereof, and the image-side surface of the seventh lens element of lenses has at least one inflection point.

[0015] When a radius of curvature of the surface of the object side of the first lens element is R1, a radius of curvature of the surface of the image side of the first lens element is R2, a radius of curvature of the surface of the object side of the second lens element is R3, a focal length of the optical lens assembly is f, a focal length of the first lens element is f1, a focal length of the seventh lens element is f7, a central thickness of the fifth lens element is CT5, an axial distance between the fourth lens element and the fifth lens element is T45, an axial distance between the object-side surface of the first lens element and an imaging surface is TL, and a maximum image height of optical lens set is ImgH, the following conditions are satisfied:
(R1+R2)/(R1-R2) <0;
-0.50 < f/f7 <0.60;
0.50 < CT5/T45 <7.50;
-3.00 < f/f1 <-0.10;
0.50 < f/R3 <1.90; It is
TL/ImgH < 2.00.

[0016] According to a further aspect of the present disclosure, an image capture unit includes one of the aforementioned optical lens assemblies and an image sensor, wherein the image sensor is disposed on an imaging surface of the array of optical lenses.

[0017] According to a further aspect of the present disclosure, an electronic device includes the aforementioned image capture unit.

BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The disclosure may be better understood by reading the following detailed description of the embodiments, with reference to the accompanying drawings as follows:

[0019] Figure 1 is a schematic view of an image capture unit according to the 1st embodiment of the present disclosure;

[0020] Figure 2 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capture unit according to the 1st modality;

[0021] Figure 3 is a schematic view of an image capture unit according to the 2nd embodiment of the present disclosure;

[0022] Figure 4 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capture unit according to the 2nd modality;

[0023] Figure 5 is a schematic view of an image capture unit according to the 3rd embodiment of the present disclosure;

[0024] Figure 6 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capture unit according to the 3rd modality;

[0025] Figure 7 is a schematic view of an image capture unit according to the 4th embodiment of the present disclosure;

[0026] Figure 8 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capture unit according to the 4th modality;

[0027] Figure 9 is a schematic view of an image capture unit according to the 5th embodiment of the present disclosure;

[0028] Figure 10 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capture unit according to the 5th modality;

[0029] Figure 11 is a schematic view of an image capture unit according to the 6th embodiment of the present disclosure;

[0030] Figure 12 shows spherical aberration curves, astigmatic field curves and a distortion curve of the image capture unit according to the 6th modality;

[0031] Figure 13 is a perspective view of an image capture unit according to the 7th embodiment of the present disclosure;

[0032] Figure 14 is a perspective view of an electronic device according to the 8th embodiment of the present disclosure;

[0033] Figure 15 is another perspective view of the electronic device in Figure 14;

[0034] Figure 16 is a perspective view of an electronic device according to the 9th embodiment of the present disclosure;

[0035] Figure 17 is another perspective view of the electronic device in Figure 16;

[0036] Figure 18 is a block diagram of the electronic device in Figure 16;

[0037] Figure 19 is a perspective view of an electronic device according to the 10th embodiment of the present disclosure;

[0038] Figure 20 is a perspective view of an electronic device according to the 11th embodiment of the present disclosure;

[0039] Figure 21 shows a schematic view of Y1R1, Y3R1 and inflection points and various critical points of lens elements according to the 1st embodiment of the present disclosure;

[0040] Figure 22 shows a schematic view of a configuration of a light bending element in an optical lens assembly according to an embodiment of the present disclosure;

[0041] Figure 23 shows a schematic view of another configuration of a light bending element in an optical lens assembly according to an embodiment of the present disclosure; It is

[0042] Figure 24 shows a schematic view of a configuration of two light bending elements in an optical lens assembly according to an embodiment of the present disclosure.

DETAILED DESCRIPTION

[0043] An optical lens assembly includes seven lens elements. The seven lens elements are, in order from one side of the object to one side of the image along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. Each of the seven lens elements has an object-side surface facing the object side and an image-side surface facing the image side.

[0044] The first lens element may have negative refractive power. Therefore, it is favorable to increase the field of view and reduce the maximum effective radius of the first lens element. The object side surface of the first lens element is concave in a paraxial region thereof. Therefore, it is favorable to adjust the focal length of the first lens element, thereby reducing the central thickness of the first lens element.

[0045] The object side surface of the second lens element may be convex in a paraxial region thereof. Therefore, it is favorable to combine the second lens element with the first lens element, thus increasing the field of view and reducing distortion.

[0046] The third lens element has positive refractive power. Therefore, it is favorable to combine the third lens element with the fourth lens element so as to correct aberrations such as spherical aberration. The object side surface of the third lens element may be convex in a paraxial region thereof. Therefore, it is favorable to adjust the lens shape of the third lens element so as to refract light with a relatively large field of view and reduce the maximum effective radius thereof.

[0047] The fifth lens element can have positive refractive power. Therefore, it is favorable to adjust the refractive power setting of the optical lens array, thus achieving a balance between field of view and size distribution. The object side surface of the fifth lens element may be concave in a paraxial region thereof. Therefore, it is favorable to adjust the overall focal length of the fourth lens element and the fifth lens element, thus ensuring the focus quality in the central light path. The image side surface of the fifth lens element may be convex in a paraxial region thereof. Therefore, it is favorable to combine the fifth lens element with the sixth lens element so as to reduce the rear focal length.

[0048] The object side surface of the sixth lens element may be convex in a paraxial region thereof. Therefore, it is favorable to adjust the lens shape of the sixth lens element, thereby reducing the field of view adjacent to the central light path. The image side surface of the sixth lens element may be concave in a paraxial region thereof. Therefore, it is favorable to adjust the direction of light displacement, thus collaborating with the light angle and image sensor and achieving good image quality.

[0049] The object side surface of the seventh lens element may be convex in a paraxial region thereof. Therefore, it is favorable to adjust the lens shape of the seventh lens element, thereby reducing chromatic aberration in the central field of view. The image side surface of the seventh lens element may be concave in a paraxial region thereof. Therefore, it is favorable to adjust the lens shape of the seventh lens element, thereby reducing the rear focal length and the total track length of the optical lens array.

[0050] The object side surface of the first lens element may have at least one inflection point. Therefore, it is favorable to avoid too large a maximum effective radius of the first lens element in order to effectively control the lens size. The image side surface of the seventh lens element may have at least one inflection point. Therefore, it is favorable to correct distortion in the peripheral field of view. Please note that the aforementioned tipping points in the first and seventh lens elements are exemplary only. Each of the lens surfaces in various embodiments of the present disclosure may also have one or more inflection points. Please refer to Figure 21, which shows a schematic view of inflection points P on the object side surfaces and on the image side surfaces of lens elements of the optical lens assembly according to the 1st embodiment of the present disclosure.

[0051] The object-side surface of the first lens element may have at least one critical point in a region off-axis thereof. Therefore, it is favorable to control the lens aperture size to meet the design requirements of an electronic device. Please refer to Figure 21, which shows a schematic view of a critical point C in an off-axis region of the object-side surface of the first lens element E1 according to the 1st embodiment of the present disclosure. The aforementioned critical point in the first lens element in Figure 21 is exemplary only. Each of the lens surfaces in various embodiments of the present disclosure may also have one or more non-axial critical points.

[0052] When a radius of curvature of the image side surface of the sixth lens element is R12, and a radius of curvature of the image side surface of the seventh lens element is R14, the following condition is satisfied: -1, 25 < R12/R14. Therefore, it is favorable to adjust a ratio of the radius of curvature of the image side surface of the sixth lens element to the radius of curvature of the image side surface of the seventh lens element, thus reducing the spherical aberration in the center of the field of view. . In addition, the following condition can also be satisfied: -0.75 < R12/R14 < 30. In addition, the following condition can also be satisfied: 0.45 < R12/R14 < 12. In addition, the following condition can also be satisfied can be satisfied: 0.70 < R12/R14 < 11.

[0053] When an Abbe number of the fourth lens element is V4, and an Abbe number of the seventh lens element is V7, the following condition can be satisfied: 1.30 < V7/V4 < 2.60. Therefore, it is favorable to adjust a ratio of the Abbe number of the fourth lens element to the Abbe number of the seventh lens element in order to reduce chromatic aberration in various fields of view. In addition, the following condition can also be satisfied: 1.35 < V7/V4 < 2.50.

[0054] When a focal length of the optical lens assembly is f, and a composite focal length of the first lens element and the second lens element is f12, the following condition can be satisfied: f/f12 < -0.10. Therefore, it is favorable to adjust the overall refractive power of the first lens element to the second lens element, thus achieving a proper balance between the increase in angle of view and the total path length of the optical lens assembly. Furthermore, the following condition can also be satisfied: f/f12 < -0.13. In addition, the following condition can also be satisfied: -0.49 < f/f12. Furthermore, the following condition can also be satisfied: -0.49 < f/f12 < -0.10.

[0055] When an object-side surface curvature radius of the fifth lens element is R9, and an object-side surface curvature radius of the seventh lens element is R13, the following condition can be satisfied: 0, 03 < (R9+R13)/(R9-R13). Therefore, it is favorable to adjust the lens shape and the refractive powers of the fifth and seventh lens elements, thus increasing the convergence quality. In addition, the following condition can also be satisfied: 0.15 < (R9+R13)/(R9-R13). In addition, the following condition can also be satisfied: (R9+R13)/(R9-R13) < 3.00. In addition, the following condition can also be satisfied: (R9+R13)/(R9-R13) < 2.00. In addition, the following condition can also be satisfied: 0.20 < (R9+R13)/(R9-R13) < 4.00.

[0056] When an axial distance between the second lens element and the third lens element is T23, and an axial distance between the third lens element and the fourth lens element is T34, the following condition can be satisfied: 1, 03 < T23/T34 < 4.60. Therefore, it is favorable to adjust the ratio of the axial distance between the second and third lens elements to the axial distance between the third and fourth lens elements, thereby reducing the maximum effective radius of the second lens element and increasing the field of view. In addition, the following condition can also be satisfied: 1.15 < T23/T34 < 4.30. In addition, the following condition can also be satisfied: 1.05 < T23/T34 < 3.70. In addition, the following condition can also be satisfied: 1.20 < T23/T34 < 3.50.

[0057] According to the present disclosure, the optical lens assembly may further include an aperture stop. When an axial distance between the aperture stop and an imaging surface is SL, and the focal length of the optical lens assembly is f, the following condition can be satisfied: 1.60 < SL/f. Therefore, it is favorable to adjust the axial distance between the aperture stop and the imaging surface, thus reducing the total track length and increasing the field of view. In addition, the following condition can also be satisfied: 1.65 < SL/f. In addition, the following condition can also be satisfied: 1.60 < SL/f < 2.70. In addition, the following condition can also be satisfied: 1.60 < SL/f < 2.50.

[0058] When the focal length of the optical lens assembly is f, and a central thickness of the seventh lens element is CT7, the following condition can be satisfied: f/CT7 < 11.5. Therefore, it is favorable to adjust the ratio of the focal length to the central thickness of the seventh lens element, thus reducing the spherical aberration in the center of the field of view. Furthermore, the following condition can also be satisfied: f/CT7 < 9.50. In addition, the following condition can also be satisfied: 5.40 < f/CT7 < 9.50. Furthermore, the following condition can also be satisfied: 5.60 < f/CT7 < 9.20.

[0059] When the focal length of the optical lens assembly is f, and a composite focal length of the fifth lens element and the sixth lens element is f56, the following condition can be satisfied: f/f56 < 0.60. Therefore, it is favorable to adjust the overall refractive power of the fifth lens element to the sixth lens element, thus correcting the astigmatism of aberrations. Furthermore, the following condition can also be satisfied: -1.50 < f/f56 < 0.68. Furthermore, the following condition can also be satisfied: -1.20 < f/f56 < 0.55. In addition, the following condition can also be satisfied: -0.50 < f/f56 < 0.60.

[0060] When the focal length of the optical lens assembly is f, and a composite focal length of the sixth lens element and the seventh lens element is f67, the following condition can be satisfied: -0.30 < f/f67. Therefore, it is favorable to adjust the overall refractive power of the sixth lens element and the seventh lens element, thereby adjusting the rear focal length. In addition, the following condition can also be satisfied: -0.30 < f/f67 < 1.70. Furthermore, the following condition can also be satisfied: -0.25 < f/f67 < 1.40.

[0061] When a radius of curvature of the image side surface of the fifth lens element is R10, and a radius of curvature of the object side surface of the sixth lens element is R11, the following condition can be satisfied: - 0 .85 < (R10+R11)/(R10-R11) < 1.25. Therefore, it is favorable to adjust the lens shape and the refractive power of the fifth lens element so as to correct the chromatic aberration in the center of the field of view. In addition, the following condition can also be satisfied: -0.75 < (R10+R11)/(R10-R11) < 1.10. In addition, the following condition can also be satisfied: - 0.40 < (R10+R11)/(R10-R11) < 0.80.

[0062] When a radius of curvature of the object-side surface of the first lens element is R1, and a radius of curvature of the image-side surface of the first lens element is R2, the following condition can be satisfied: (R1 +R2)/(R1-R2) < 0. Therefore, it is favorable to adjust the lens shape and the refractive power of the first lens element, thus achieving a proper balance between the axial distance of the first lens element to the stop of aperture and field of view. In addition, the following condition can also be satisfied: -2.50 < (R1+R2)/(R1-R2) < 0.60. In addition, the following condition can also be satisfied: -2.00 < (R1+R2)/(R1-R2) < -0.10.

[0063] When the focal length of the optical lens assembly is f, and a focal length of the seventh lens element is f7, the following condition can be satisfied: -0.50 < f/f7 < 0.60. Therefore, it is favorable to adjust the refractive power of the seventh lens element, thus increasing the quality of blocking light in the center of the field of view and reducing the rear focal length.

[0064] When a central thickness of the fifth lens element is CT5, and an axial distance between the fourth lens element and the fifth lens element is T45, the following condition can be satisfied: 0.50 < CT5/T45 < 7 ,50. Therefore, it is favorable to adjust the ratio of the central thickness of the fifth lens element and the axial distance between the fourth lens element and the fifth lens element so as to properly configure the location of the fifth lens element, thus increasing the convergence quality. in the center of the field of view and reduce assembly error.

[0065] When the focal length of the optical lens assembly is f, and the focal length of the first lens element is f1, the following condition can be satisfied: -3.00 < f/f1 < -0.10. Therefore, it is favorable to adjust the refractive power of the first lens element, thereby increasing the field of view and reducing the maximum effective radius of the first lens element. Furthermore, the following condition can also be satisfied: -1.00 < f/f1 < -0.20.

[0066] When the focal length of the optical lens assembly is f, and a radius of curvature of the object-side surface of the second lens element is R3, the following condition can be satisfied: 0.50 < f/R3 < 1 ,90. Therefore, it is favorable to adjust the ratio of the focal length to the radius of curvature of the object-side surface of the second lens element, thus achieving a proper balance between lens manufacturing yield rate and quality of convergence at the center of the field of view. vision.

[0067] When an axial distance between the object-side surface of the first lens element and the imaging surface is TL, and a maximum image height of the optical lens array (which may be half a diagonal length of an area photosensitive value of an image sensor) is ImgH, the following condition can be satisfied: TL/ImgH < 2.00. Therefore, it is favorable to adjust the ratio of the total track length to the maximum image height, thus achieving a proper balance between the maximum image height and the field of view. In addition, the following condition can also be satisfied: 0.80 < TL/ImgH < 1.60.

[0068] When the focal length of the optical lens assembly is f, an 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: 2.50 < f/(T12+T23) < 14.00. Therefore, it is favorable to adjust the lens distribution from the first lens element to the third lens element, thereby increasing the throughput rate of the array. Furthermore, the following condition can also be satisfied: 2.50 < f/(T12+T23) < 10.0.

[0069] When the radius of curvature of the object side surface of the first lens element is R1, and the radius of curvature of the object side surface of the seventh lens element is R13, the following condition can be satisfied: - 0 .50 < (R1+R13)/(R1-R13) < 2.50. Therefore, it is favorable to adjust the lens shape and refractive powers of the first and seventh lens elements, thereby reducing the manufacturing cost of the first and seventh lens elements. In addition, the following condition can also be satisfied: -0.10 < (R1+R13)/(R1-R13) < 1.50. In addition, the following condition can also be satisfied: 0.10 < (R1+R13)/(R1-R13) < 1.00.

[0070] When a refractive index of the fourth lens element is N4, and a refractive index of the sixth lens element is N6, the following condition can be satisfied: 1.60 < (N4+N6)/2 < 1.85. Therefore, it is favorable to adjust the average value of the refractive indices for the fourth and sixth lens elements, thus increasing the maximum image height and field of view.

[0071] When the maximum effective radius of the object side surface of the first lens element is Y1R1, and the maximum effective radius of the object side surface of the third lens element is Y3R1, the following condition can be satisfied: 2, 75 < Y1R1/Y3R1 < 4.70. Therefore, it is favorable to adjust the maximum effective radius ratio of the first and third lens elements, thus achieving a proper balance between size and reduction of the maximum image height and reduction of mechanism design difficulty. Please refer to Figure 21, which shows a schematic view of Y1R1 and Y3R1 according to the 1st embodiment of the present disclosure.

[0072] When a central thickness of the third lens element is CT3, and an axial distance between the fifth lens element and the sixth lens element is T56, the following condition can be satisfied: 15.0 < CT3/T56 < 40 ,0. Therefore, it is favorable to adjust the central thickness of the third lens element and the axial distance between the fifth and sixth lens elements, thereby increasing the maximum image height and reducing the total track length of the optical lens array. In addition, the following condition can also be satisfied: 20.0 < CT3/T56 < 40.0. In addition, the following condition can also be satisfied: 29.0 < CT3/T56 < 40.0.

[0073] When the focal length of the optical lens assembly is f, and a central thickness of the second lens element is CT2, the following condition can be satisfied: 5.90 < f/CT2 < 11.00. Therefore, it is favorable to adjust the ratio of the focal length to the central thickness of the second lens element, thus increasing the field of view. In addition, the following condition can also be satisfied: 5.90 < f/CT2 < 9.00.

[0074] When the focal length of the optical lens assembly is f, the central thickness of the first lens element is CT1, and the central thickness of the second lens element is CT2, the following condition can be satisfied: 1.50 < f /(CT1+CT2) < 4.50. Therefore, it is favorable to adjust the ratio of the focal length to the sum of the central thicknesses of the first and second lens elements, thus achieving a proper balance between the manufacturing difficulty and the total track length of the lens.

[0075] When the axial distance between the first lens element and the second lens element is T12, the axial distance between the second lens element and the third lens element is T23, the axial distance between the third lens element and the fourth lens element is T34, the axial distance between the fourth lens element and the fifth lens element is T45, the axial distance between the fifth lens element and the sixth lens element is T56, and an axial distance between the sixth lens element and the seventh lens element is T67, the following condition can be satisfied: 0.55 < (T12+T23)/(T34+T45+T56+T67) < 1.50. Therefore, it is favorable to adjust the ratio of the axial distance between the first lens element and the third lens element to the axial distance between the third lens element and the seventh lens element, thus balancing the total track length, field of view and the maximum image height.

[0076] When the axial distance between the first lens element and the second lens element is T12, the axial distance between the second lens element and the third lens element is T23, and a sum of axial distances between each of all adjacent lens elements of the optical lens array is ΣAT, the following condition can be satisfied: 0.30 < (T12+T23)/ΣAT < 0.70. Therefore, it is favorable to adjust the ratio of the axial distance between the first lens element and the third lens element to the sum of the axial distances between each of all adjacent lens elements of the optical lens array, thus balancing the distribution of the elements. of lenses and reducing impact during assembly.

[0077] When half of a maximum field of view of the optical lens assembly is HFOV, the following condition can be satisfied: 59.0 [degrees] < HFOV < 73.0 [degrees] . Therefore, it is favorable to adjust the field of view, thus obtaining a relatively wide image range.

[0078] When a refractive index of the second lens element is N2, and the refractive index of the fourth lens element is N4, the following condition can be satisfied: 1.60 < (N2+N4)/2 < 1.72. Therefore, it is favorable to adjust the average value of the refractive indices of the second and fourth lens elements, thereby reducing the maximum effective radius of the first to fourth lens elements so as to reduce the design difficulty of the mechanism.

[0079] When an Abbe number of the first lens element is V1, an Abbe number of the second lens element is V2, an Abbe number of the third lens element is V3, the Abbe number of the fourth lens element is V4, a number The Abbe number of the fifth lens element is V5, an Abbe number of the sixth lens element is V6, the Abbe number of the seventh lens element is V7, an Abbe number of the i-th lens element is Vi, a refractive index of the first element of lenses is N1, the refractive index of the second lens element is N2, a refractive index of the third lens element is N3, the refractive index of the fourth lens element is N4, the refractive index of the fifth lens element is N5, the refractive index of the sixth lens element is N6, a refractive index of the seventh lens element is N7, and a refractive index of the ith lens element is Ni, at least one lens element of the optical lens assembly can satisfy the following condition: 5.0 < Vi/Ni < 11.9, where i = 1, 2, 3, 4, 5, 6 or 7. Therefore, it is favorable to correct chromatic aberration in the peripheral field of view and increase the size of the image.

[0080] When a maximum value between central thicknesses of all lens elements of the optical lens set is CT_MAX, and the focal length of the optical lens set is f, the following condition can be satisfied: 0.30 < CT_MAX/f < 0.50. Therefore, it is favorable to adjust the ratio of the focal length to the largest axial distance, thus balancing the ratio of the largest axial distance and reducing the mounting error.

[0081] According to the present disclosure, the above-mentioned features and conditions can be used in various combinations so as to obtain the corresponding effects.

[0082] According to the present disclosure, the lens elements of the 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 optical lens assembly can be more flexible, and the influence on the image caused by the temperature change of the external environment can be reduced. The glass lens element can be made by grinding or molding. When lens elements are made of plastic material, manufacturing costs can be effectively reduced. Furthermore, the surfaces of each lens element can be arranged to be spherical or aspherical. Spherical lens elements are simple to manufacture. The aspherical lens element design allows more control variables to eliminate their aberrations and reduce the required number of lens elements, and the overall track length of the optical lens assembly can therefore be effectively shortened. Additionally, aspherical surfaces can be formed by plastic injection molding or glass molding.

[0083] According to the present disclosure, when a lens surface is aspherical, it means that the lens surface has an aspherical shape throughout its entire optically effective area, or a portion(s) thereof.

[0084] According to the present disclosure, one or more of the lens element materials may optionally include an additive that generates light absorption and interference effects and changes the transmittance of the lens elements in a specific wavelength range to a reduction in unwanted stray light or color shift. For example, the additive can optionally filter light in the 600 nm to 800 nm wavelength range to reduce excessive red light and/or near infrared light; or it can optionally filter light in the 350 nm to 450 nm wavelength range to reduce excessive blue light and/or near ultraviolet light from interfering with the final image. The additive can be mixed homogeneously with a plastic material to be used in manufacturing a mixed material lens element by injection molding. Furthermore, the additive can be coated onto lens surfaces to provide the aforementioned effects.

[0085] According to the present disclosure, each of an object-side surface and an image-side surface has a paraxial region and an off-axis region. The paraxial region refers to the surface region where light rays travel close to the optical axis, and the off-axis region refers to the surface region far from the paraxial region. Particularly, unless otherwise stated, when the lens element has a convex surface, this indicates that the surface is convex in the paraxial region thereof; when the lens element has a concave surface, this indicates that the surface is concave in the paraxial region thereof. Furthermore, when a refractive power or focus region of a lens element is not defined, it indicates that the refractive power or focus region of the lens element is in the paraxial region of the lens element.

[0086] According to the present disclosure, an inflection point is a point on the surface of the lens element at which the surface changes from concave to convex, or vice versa. A critical point is a non-axial point on the lens surface where its tangent is perpendicular to the optical axis.

[0087] According to the present disclosure, the imaging surface of the optical lens assembly, based on the corresponding image sensor, may be flat or curved, especially a curved surface being concave facing the object side of the lens assembly optics.

[0088] According to the present disclosure, an image correction unit, such as a field leveler, can optionally be disposed between the lens element closest to the image side of the 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 (concave or convex surface with types of spherical, aspherical, diffractive or Fresnel), can be adjusted according to the design of the image correction unit. image capture unit. In general, a preferable image correction unit is, for example, a thin transparent element having a concave object-side surface and a flat image-side surface, and the transparent thin element is disposed close to the image surface.

[0089] According to the present disclosure, at least one light bending element, such as a prism or a mirror, can optionally be disposed between an image object and the image surface in the image optical path, so that the optical lens array can be more flexible in spatial arrangement, and therefore the dimensions of an electronic device are not constrained by the overall track length of the optical lens array. Specifically, please refer to Figure 22 and Figure 23. Figure 22 shows a schematic view of a configuration of a light bending element in an optical lens assembly according to an embodiment of the present disclosure, and Figure 23 shows a schematic view of another configuration of a light bending element in an optical lens assembly according to an embodiment of the present disclosure. In Figure 22 and Figure 23, the optical lens assembly may have, in order from an image object (not shown in the figures) to an IMG image surface along an optical path, a first optical axis OA1, a LF lightbending and a second optical axis OA2. The LF light bending element can be disposed between the imaging object and an LG lens group of the optical lens assembly as shown in Figure 22 or disposed between an LG lens group of the optical lens assembly and the IMG imaging surface. as shown in Figure 23. Also, please refer to Figure 24 which shows a schematic view of a configuration of two light bending elements in an optical lens assembly in accordance with an embodiment of the present disclosure. In Figure 24, the optical lens assembly may have, in order from an image object (not shown in the figure) to an IMG image surface along an optical path, a first optical axis OA1, a first light LF1, a second optical axis OA2, a second light bending element LF2 and a third optical axis OA3. The first light bending element LF1 is disposed between the image object and a lens group LG of the optical lens assembly, the second light bending element LF2 is disposed between the lens group LG of the optical lens assembly and the image surface IMG, and the direction of light displacement in the first optical axis OA1 can be the same direction as the direction of light displacement in the third optical axis OA3 as shown in Figure 24. The optical lens set can be optionally supplied with three or more lightbending elements, and the present disclosure is not limited to the type, quantity and position of the lightbending elements of the embodiments disclosed in the aforementioned figures.

[0090] According to the present disclosure, the optical lens assembly may include at least one stop, such as an aperture stop, a brightness stop, or a field stop. Said brightness stop or said field stop is defined to eliminate stray light and thus improve the image quality thereof.

[0091] According to the present disclosure, an opening stop can be configured as a front stop or an intermediate stop. A front stop disposed between an imaging object and the first lens element can provide a greater distance between an exit pupil of the optical lens array and the imaging surface to produce a telecentric effect, and thus improve the detection efficiency. an image sensor (for example, CCD or CMOS). An intermediate stop disposed between the first lens element and the imaging surface is conducive to widening the viewing angle of the optical lens assembly and thus providing a wider field of view thereto.

[0092] According to the present disclosure, the optical lens assembly may include an aperture control unit. The aperture control unit can be a mechanical component or a light modulator, which can control the aperture size and shape by means of electricity or electrical signals. The mechanical component may include a movable member such as a blade assembly or a light shield sheet. The light modulator may include a shielding element such as a filter, an electrochromic material or a liquid crystal layer. The aperture control unit controls the amount of incident light or exposure time to improve image quality adjustability. Furthermore, the aperture control unit can be the aperture stop of the present disclosure, which changes the f-number to obtain different image effects such as depth of field or lens speed.

[0093] In accordance with the above description of the present disclosure, the following specific embodiments are provided for further explanation.

1st Modality

[0094] Figure 1 is a schematic view of an image capture unit according to the 1st embodiment of the present disclosure. Figure 2 shows, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the image capture unit according to the 1st modality. In Figure 1, the image capture unit 1 includes the optical lens assembly (their reference number is omitted) of the present disclosure and an IS image sensor. The optical lens assembly includes, in order from one object side to one image side along an optical axis, a first lens element E1, a second lens element E2, an aperture stop ST, a third lens element E3 lens, a fourth E4 lens element, an S1 stop, a fifth E5 lens element, a sixth E6 lens element, an S2 stop, a seventh E7 lens element, an E8 filter, and an IMG imaging surface. The optical lens assembly includes seven lens elements (E1, E2, E3, E4, E5, E6 and E7) with no additional lens elements disposed between each of the seven adjacent lens elements.

[0095] The first E1 lens element with negative refractive power has a surface on the side of the object being concave in a paraxial region of it and a surface on the side of the image being convex in a paraxial region of it. The first E1 lens element is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the first E1 lens element has two inflection points. The image side surface of the first E1 lens element has two inflection points. The object-side surface of the first E1 lens element has a critical point in an off-axis region of the element. The image-side surface of the first E1 lens element has a critical point in an off-axis region thereof.

[0096] The second E2 lens element with positive refractive power has an object side surface being convex in a paraxial region of the same and an image side surface being concave in a paraxial region of the same. The second E2 lens element is made of plastic material and has the object side surface and the image side surface both being aspherical.

[0097] The third E3 lens element with positive refractive power has an object-side surface being convex in a paraxial region of the same and an image-side surface being convex in a paraxial region of the same. The third E3 lens element is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the third E3 lens element has an inflection point.

[0098] The fourth element of E4 lenses with negative refractive power has an object-side surface being concave in a paraxial region of it and an image-side surface being concave in a paraxial region of it. The fourth E4 lens element is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the fourth E4 lens element has an inflection point. The image-side surface of the fourth E4 lens element has four inflection points. The image-side surface of the fourth E4 lens element has a critical point in an off-axis region of the element.

[0099] The fifth element of E5 lenses with positive refractive power has an object-side surface being concave in a paraxial region of it and an image-side surface being convex in a paraxial region of it. The fifth element of E5 lens is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the fifth E5 lens element has two inflection points. The image-side surface of the fifth E5 lens element has two inflection points.

[0100] The sixth element of E6 lenses with positive refractive power has a surface on the side of the object being convex in a paraxial region of it and a surface on the side of the image being concave in a paraxial region of it. The sixth element of E6 lens is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the sixth E6 lens element has two inflection points. The image-side surface of the sixth E6 lens element has two inflection points. The object-side surface of the sixth E6 lens element has a critical point in an off-axis region of the element. The image-side surface of the sixth E6 lens element has a critical point in an off-axis region of the element.

[0101] The seventh element of E7 lenses with negative refractive power has a surface on the side of the object being convex in a paraxial region of it and a surface on the side of the image being concave in a paraxial region of it. The seventh element of E7 lens is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the seventh E7 lens element has four inflection points. The image-side surface of the seventh E7 lens element has two inflection points. The object-side surface of the seventh E7 lens element has a critical point in an off-axis region of the element. The image-side surface of the seventh E7 lens element has a critical point in an off-axis region of the element.

[0102] The E8 filter is made of glass material and located between the seventh element of E7 lenses and the IMG imaging surface, and will not affect the focal length of the optical lens assembly. The IS image sensor is disposed on or near the IMG imaging surface of the optical lens assembly.

[0103] The equation of the aspherical surface profiles of the aforementioned lens elements of the 1st embodiment is expressed as follows:

[0104] X is the displacement in parallel with 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;

[0105] Y is the vertical distance of the point on the aspherical surface to the optical axis;

[0106] R is the radius of curvature;

[0107] k is the conic coefficient; It is

[0108] Ai is the ith aspherical coefficient, and in the embodiments, i can be, but is not limited to, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28 and 30.

[0109] In the optical lens assembly of the image capture unit according to the 1st embodiment, when a focal length of the optical lens assembly is f, an f number of the optical lens assembly is Fno, and half a field of maximum view of the optical lens assembly is HFOV, these parameters have the following values: f = 3.08mm (mm), Fno = 2.25, HFOV = 59.52 degrees (degrees).

[0110] When a maximum value between central thicknesses of all lens elements of the optical lens set is CT_MAX, and the focal length of the optical lens set is f, the following condition is satisfied: CT_MAX/f = 0.34. In this embodiment, between the first to seventh lens elements (E1-E7), a center thickness of the third E3 lens element is greater than the center thicknesses of the other lens elements of the optical lens assembly, and CT_MAX is equal to the thickness center of the third element of E3 lenses.

[0111] When the central thickness of the third lens element E3 is CT3, and an axial distance between the fifth lens element E5 and the sixth lens element E6 is T56, the following condition is satisfied: CT3/T56 = 35.40 . In this embodiment, an axial distance between two adjacent lens elements is a distance in a paraxial region between two adjacent lens surfaces of two adjacent lens elements.

[0112] When the focal length of the optical lens assembly is f, a central thickness of the first lens element E1 is CT1, and a central thickness of the second lens element E2 is CT2, the following condition is satisfied: f/(CT1 +CT2) = 3.05.

[0113] When the focal length of the optical lens assembly is f, and the central thickness of the second lens element E2 is CT2, the following condition is satisfied: f/CT2 = 7.21.

[0114] When a central thickness of the fifth lens element E5 is CT5, and an axial distance between the fourth lens element E4 and the fifth lens element E5 is T45, the following condition is satisfied: CT5/T45 = 3.01 .

[0115] When the focal length of the optical lens assembly is f, and a central thickness of the seventh E7 lens element is CT7, the following condition is satisfied: f/CT7 = 7.24.

[0116] When the focal length of the optical lens assembly is f, and a composite focal length of the first E1 lens element and the second E2 lens element is f12, the following condition is satisfied: f/f12 = -0.16 .

[0117] When the focal length of the optical lens assembly is f, and a composite focal length of the fifth lens element E5 and the sixth lens element E6 is f56, the following condition is satisfied: f/f56 = 0.45.

[0118] When the focal length of the optical lens assembly is f, and a composite focal length of the sixth lens element E6 and the seventh lens element E7 is f67, the following condition is satisfied: f/f67 = -0.11 .

[0119] When the focal length of the optical lens assembly is f, and a focal length of the first lens element E1 is f1, the following condition is satisfied: f/f1 = - 0.39.

[0120] When the focal length of the optical lens assembly is f, and a focal length of the seventh lens element E7 is f7, the following condition is satisfied: f/f7 = - 0.16.

[0121] When the focal length of the optical lens assembly is f, and a radius of curvature of the object-side surface of the second lens element E2 is R3, the following condition is satisfied: f/R3 = 1.39.

[0122] When the focal length of the optical lens assembly is f, an 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 element of E3 lenses is T23, the following condition is satisfied: f/(T12+T23) = 4.54.

[0123] When a refractive index of the second element of lenses E2 is N2, and a refractive index of the fourth element of lenses E4 is N4, the following condition is satisfied: (N2+N4)/2 = 1.65.

[0124] When the refractive index of the fourth element of lenses E4 is N4, and a refractive index of the sixth element of lenses E6 is N6, the following condition is satisfied: (N4+N6)/2 = 1.62.

[0125] When a radius of curvature of the object side surface of the first lens element E1 is R1, and a radius of curvature of the object side surface of the seventh lens element E7 is R13, the following condition is satisfied: ( R1+R13)/(R1-R13) = 0.53.

[0126] When the radius of curvature of the object-side surface of the first lens element E1 is R1, and a radius of curvature of the image-side surface of the first lens element E1 is R2, the following condition is satisfied: ( R1+R2)/(R1-R2) = -1.33.

[0127] When a radius of curvature of the image side surface of the fifth lens element E5 is R10, and a radius of curvature of the object side surface of the sixth lens element E6 is R11, the following condition is satisfied: ( R10+R11)/(R10-R11) = 0.03.

[0128] When a radius of curvature of the surface of the image side of the sixth lens element E6 is R12, and a radius of curvature of the surface of the image side of the seventh lens element E7 is R14, the following condition is satisfied: R12 /R14 = 2.16.

[0129] When a radius of curvature of the object-side surface of the fifth lens element E5 is R9, and the radius of curvature of the object-side surface of the seventh lens element E7 is R13, the following condition is satisfied: ( R9+R13)/(R9-R13) = 0.51.

[0130] When the axial distance between the first lens element E1 and the second lens element E2 is T12, the axial distance between the second lens element E2 and the third lens element E3 is T23, and a sum of axial distances between each of all adjacent lens elements of the optical lens array is ΣAT, the following condition is satisfied: (T12+T23)/ΣAT = 0.42. In this embodiment, ΣAT is a sum of axial distances between the first lens element E1 and the second lens element E2, the second lens element E2 and the third lens element E3, the third lens element E3 and the fourth lens element E4 lenses, the fourth E4 lens element and the fifth E5 lens element, the fifth E5 lens element and the sixth E6 lens element, and the sixth E6 lens element and the seventh E7 lens element.

[0131] When the axial distance between the first lens element E1 and the second lens element E2 is T12, the axial distance between the second lens element E2 and the third lens element E3 is T23, an axial distance between the third E3 lens element and the fourth E4 lens element is T34, the axial distance between the fourth E4 lens element and the fifth E5 lens element is T45, the axial distance between the fifth E5 lens element and the sixth lens element E6 is T56, and an axial distance between the sixth lens element E6 and the seventh lens element E7 is T67, the following condition is satisfied: (T12+T23)/(T34+T45+T56+T67) = 0.72 .

[0132] When the axial distance between the second lens element E2 and the third lens element E3 is T23, and the axial distance between the third lens element E3 and the fourth lens element E4 is T34, the following condition is satisfied : T23/T34 = 1.39.

[0133] When an axial distance between the object-side surface of the first E1 lens element and the IMG image surface is TL, and a maximum image height of the optical lens assembly is ImgH, the following condition is satisfied: TL /ImgH = 1.40.

[0134] When an axial distance between the ST aperture stop and the IMG imaging surface is SL, and the focal length of the optical lens assembly is f, the following condition is satisfied: SL/f = 1.78.

[0135] When an Abbe number of the fourth lens element E4 is V4, and an Abbe number of the seventh lens element E7 is V7, the following condition is satisfied: V7/V4 = 2.04.

[0136] When an Abbe number of the first E1 lens element is V1, an Abbe number of the second E2 lens element is V2, an Abbe number of the third E3 lens element is V3, the Abbe number of the fourth E4 lens element is V4, an Abbe number of the fifth element of lenses E5 is V5, an Abbe number of the sixth element of lenses E6 is V6, the Abbe number of the seventh element of lenses E7 is V7, a refractive index of the first element of lenses E1 is N1, the refractive index of the second element of lenses E2 is N2, the refractive index of the third element of lenses E3 is N3, the refractive index of the fourth element of lenses E4 is N4, the refractive index of the fifth element of lenses E5 is N5, the index refractive index of the sixth element of lenses E6 is N6, and a refractive index of the seventh element of lenses E7 is N7, the following conditions are satisfied: V1/N1 = 36.30; V2/N2 = 15.85; V3/N3 = 36.26; V4/N4 = 10.90; V5/N5 = 36.26; V6/N6 = 36.26; and V7/N7 = 23.91.

[0137] 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 object side surface of the third lens element E3 is Y3R1, the following condition is satisfied: Y1R1 /Y3R1 = 3.47.

[0138] The detailed optical data of the 1st modality are shown in Table 1A and the aspherical surface data are shown in Table 1B below.

[0139] In Table 1A, the radius of curvature, thickness and focal length are shown in millimeters (mm). Surface numbers 0 to 20 represent surfaces sequentially arranged from the object side to the image side along the optical axis. In Table 1B, k represents the conic coefficient of the equation for aspherical surface profiles. A4-A30 represent the aspherical coefficients ranging from the 4th to the 30th order. The tables presented below for each modality are the corresponding schematic parameters and aberration curves, and the definitions of the tables are the same as in Table 1A and Table 1B of the 1st modality. Therefore, an explanation in this regard will not be provided again.

2nd Modality

[0140] Figure 3 is a schematic view of an image capture unit according to the 2nd embodiment of the present disclosure. Figure 4 shows, in order from left to right, spherical aberration curves, astigmatic field curves and an image capture unit distortion curve according to the 2nd modality. In Figure 3, the image capture unit 2 includes the optical lens assembly (its reference number is omitted) of the present disclosure and an IS image sensor. The optical lens assembly includes, in order from one object side to one image side along an optical axis, a first lens element E1, a second lens element E2, an aperture stop ST, a third lens element E3 lens, a fourth E4 lens element, an S1 stopper, a fifth E5 lens element, a sixth E6 lens element, a seventh E7 lens element, an E8 filter, and an IMG image surface. The optical lens assembly includes seven lens elements (E1, E2, E3, E4, E5, E6 and E7) with no additional lens elements disposed between each of the seven adjacent lens elements.

[0141] The first element of E1 lenses with negative refractive power has a surface on the side of the object being concave in a paraxial region of it and a surface on the side of the image being convex in a paraxial region of it. The first E1 lens element is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the first E1 lens element has two inflection points. The image side surface of the first E1 lens element has two inflection points. The object-side surface of the first E1 lens element has a critical point in an off-axis region of the element. The image-side surface of the first E1 lens element has a critical point in an off-axis region thereof.

[0142] The second E2 lens element with positive refractive power has a surface on the side of the object being convex in a paraxial region of it and a surface on the side of the image being concave in a paraxial region of it. The second E2 lens element is made of plastic material and has the object side surface and the image side surface both being aspherical.

[0143] The third element of E3 lenses with positive refractive power has a surface on the side of the object being convex in a paraxial region of it and a surface on the side of the image being convex in a paraxial region of it. The third E3 lens element is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the third E3 lens element has an inflection point.

[0144] The fourth element of E4 lenses with negative refractive power has a surface on the side of the object being concave in a paraxial region of it and a surface on the side of the image being concave in a paraxial region of it. The fourth E4 lens element is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the fourth E4 lens element has two inflection points. The image-side surface of the fourth E4 lens element has three inflection points. The image-side surface of the fourth E4 lens element has a critical point in an off-axis region of the element.

[0145] The fifth element of E5 lenses with positive refractive power has a surface on the side of the object being concave in a paraxial region of it and a surface on the side of the image being convex in a paraxial region of it. The fifth element of E5 lens is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the fifth E5 lens element has four inflection points. The image-side surface of the fifth E5 lens element has two inflection points. The object-side surface of the fifth E5 lens element has two critical points in an off-axis region of the element. The image-side surface of the fifth E5 lens element has two critical points in an off-axis region of the element.

[0146] The sixth element of E6 lenses with negative refractive power has a surface on the side of the object being convex in a paraxial region of it and a surface on the side of the image being concave in a paraxial region of it. The sixth element of E6 lens is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the sixth E6 lens element has five inflection points. The image-side surface of the sixth E6 lens element has two inflection points. The object-side surface of the sixth E6 lens element has a critical point in an off-axis region of the element. The image-side surface of the sixth E6 lens element has two critical points in an off-axis region of the element.

[0147] The seventh element of E7 lenses with negative refractive power has a surface on the side of the object being convex in a paraxial region of it and a surface on the side of the image being concave in a paraxial region of it. The seventh element of E7 lens is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the seventh E7 lens element has three inflection points. The image-side surface of the seventh E7 lens element has two inflection points. The object-side surface of the seventh E7 lens element has a critical point in an off-axis region of the element. The image-side surface of the seventh E7 lens element has two critical points in an off-axis region of the element.

[0148] The E8 filter is made of glass material and located between the seventh element of E7 lenses and the IMG imaging surface, and will not affect the focal length of the optical lens assembly. The IS image sensor is disposed on or near the IMG imaging surface of the optical lens assembly.

[0149] The detailed optical data of the 2nd modality are shown in Table 2A and the aspherical surface data are shown in Table 2B below.

[0150] In the 2nd mode, the equation of the aspherical surface profiles of the aforementioned lens elements is the same as the equation of the 1st mode. Furthermore, the definitions of these parameters shown in Table 2C are the same as those established in the 1st modality with corresponding values for the 2nd modality, therefore an explanation in this regard will not be provided again.

[0151] In addition, these parameters can be calculated from Table 2A and Table 2B as the following values and satisfy the following conditions:

3rd Modality

[0152] Figure 5 is a schematic view of an image capture unit according to the 3rd embodiment of the present disclosure. Figure 6 shows, in order from left to right, spherical aberration curves, astigmatic field curves and an image capture unit distortion curve according to the 3rd modality. In Figure 5, the image capture unit 3 includes the optical lens assembly (their reference number is omitted) of the present disclosure and an IS image sensor. The optical lens assembly includes, in order from one object side to one image side along an optical axis, a first lens element E1, a second lens element E2, an aperture stop ST, a third lens element E3 lens, a fourth E4 lens element, an S1 stopper, a fifth E5 lens element, a sixth E6 lens element, a seventh E7 lens element, an E8 filter, and an IMG image surface. The optical lens assembly includes seven lens elements (E1, E2, E3, E4, E5, E6 and E7) with no additional lens elements disposed between each of the seven adjacent lens elements.

[0153] The first element of E1 lenses with negative refractive power has a surface on the side of the object being concave in a paraxial region of it and a surface on the side of the image being convex in a paraxial region of it. The first E1 lens element is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the first E1 lens element has two inflection points. The image side surface of the first E1 lens element has two inflection points. The object-side surface of the first E1 lens element has a critical point in an off-axis region of the element. The image-side surface of the first E1 lens element has a critical point in an off-axis region thereof.

[0154] The second element of E2 lenses with positive refractive power has a surface on the side of the object being convex in a paraxial region of it and a surface on the side of the image being concave in a paraxial region of it. The second E2 lens element is made of plastic material and has the object side surface and the image side surface both being aspherical.

[0155] The third element of E3 lenses with positive refractive power has a surface on the side of the object being convex in a paraxial region of it and a surface on the side of the image being convex in a paraxial region of it. The third E3 lens element is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the third E3 lens element has an inflection point.

[0156] The fourth element of E4 lenses with negative refractive power has a surface on the side of the object being convex in a paraxial region of it and a surface on the side of the image being concave in a paraxial region of it. The fourth E4 lens element is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the fourth E4 lens element has an inflection point. The image-side surface of the fourth E4 lens element has two inflection points. The object-side surface of the fourth E4 lens element has a critical point in an off-axis region of the element.

[0157] The fifth element of E5 lenses with positive refractive power has a surface on the side of the object being concave in a paraxial region of it and a surface on the side of the image being convex in a paraxial region of it. The fifth element of E5 lens is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the fifth E5 lens element has an inflection point. The image-side surface of the fifth E5 lens element has an inflection point. The object-side surface of the fifth E5 lens element has a critical point in an off-axis region of the element.

[0158] The sixth element of E6 lenses with negative refractive power has a surface on the side of the object being convex in a paraxial region of it and a surface on the side of the image being concave in a paraxial region of it. The sixth element of E6 lens is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the sixth E6 lens element has two inflection points. The image-side surface of the sixth E6 lens element has an inflection point. The object-side surface of the sixth E6 lens element has a critical point in an off-axis region of the element. The image-side surface of the sixth E6 lens element has a critical point in an off-axis region of the element.

[0159] The seventh element of E7 lenses with negative refractive power has a surface on the side of the object being convex in a paraxial region of it and a surface on the side of the image being concave in a paraxial region of it. The seventh element of E7 lens is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the seventh E7 lens element has three inflection points. The image-side surface of the seventh E7 lens element has three inflection points. The object-side surface of the seventh E7 lens element has a critical point in an off-axis region of the element. The image-side surface of the seventh E7 lens element has a critical point in an off-axis region of the element.

[0160] The E8 filter is made of glass material and located between the seventh element of E7 lenses and the IMG imaging surface, and will not affect the focal length of the optical lens assembly. The IS image sensor is disposed on or near the IMG imaging surface of the optical lens assembly.

[0161] The detailed optical data of the 3rd modality are shown in Table 3A and the aspherical surface data are shown in Table 3B below.

[0162] In the 3rd mode, the equation of the aspherical surface profiles of the aforementioned lens elements is the same as the equation of the 1st mode. Furthermore, the definitions of these parameters shown in Table 3C are the same as those established in the 1st modality with corresponding values for the 3rd modality, therefore an explanation in this regard will not be provided again.

[0163] In addition, these parameters can be calculated from Table 3A and Table 3B as the following values and satisfy the following conditions:

4th Modality

[0164] Figure 7 is a schematic view of an image capture unit according to the 4th embodiment of the present disclosure. Figure 8 shows, in order from left to right, spherical aberration curves, astigmatic field curves and an image capture unit distortion curve according to the 4th modality. In Figure 7, the image capture unit 4 includes the optical lens assembly (its reference number is omitted) of the present disclosure and an IS image sensor. The optical lens assembly includes, in order from one object side to one image side along an optical axis, a first lens element E1, a second lens element E2, an aperture stop ST, a third lens element E3 lens, a fourth E4 lens element, an S1 stopper, a fifth E5 lens element, a sixth E6 lens element, a seventh E7 lens element, an E8 filter, and an IMG image surface. The optical lens assembly includes seven lens elements (E1, E2, E3, E4, E5, E6 and E7) with no additional lens elements disposed between each of the seven adjacent lens elements.

[0165] The first element of E1 lenses with negative refractive power has a surface on the side of the object being concave in a paraxial region of it and a surface on the side of the image being convex in a paraxial region of it. The first E1 lens element is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the first E1 lens element has two inflection points. The image side surface of the first E1 lens element has two inflection points. The object-side surface of the first E1 lens element has a critical point in an off-axis region of the element. The image-side surface of the first E1 lens element has a critical point in an off-axis region thereof.

[0166] The second E2 lens element with positive refractive power has a surface on the side of the object being convex in a paraxial region of it and a surface on the side of the image being concave in a paraxial region of it. The second E2 lens element is made of plastic material and has the object side surface and the image side surface both being aspherical.

[0167] The third element of E3 lenses with positive refractive power has a surface on the side of the object being convex in a paraxial region of it and a surface on the side of the image being convex in a paraxial region of it. The third E3 lens element is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the third E3 lens element has an inflection point.

[0168] The fourth element of E4 lenses with positive refractive power has a surface on the side of the object being concave in a paraxial region of it and a surface on the side of the image being convex in a paraxial region of it. The fourth E4 lens element is made of plastic material and has the object side surface and the image side surface both being aspherical. The image-side surface of the fourth E4 lens element has an inflection point.

[0169] The fifth element of E5 lenses with positive refractive power has a surface on the side of the object being concave in a paraxial region of it and a surface on the side of the image being convex in a paraxial region of it. The fifth element of E5 lens is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the fifth E5 lens element has an inflection point. The image-side surface of the fifth E5 lens element has an inflection point. The object-side surface of the fifth E5 lens element has a critical point in an off-axis region of the element.

[0170] The sixth element of E6 lenses with negative refractive power has a surface on the side of the object being convex in a paraxial region of it and a surface on the side of the image being concave in a paraxial region of it. The sixth element of E6 lens is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the sixth E6 lens element has two inflection points. The image-side surface of the sixth E6 lens element has an inflection point. The object-side surface of the sixth E6 lens element has a critical point in an off-axis region of the element. The image-side surface of the sixth E6 lens element has a critical point in an off-axis region of the element.

[0171] The seventh element of E7 lenses with negative refractive power has a surface on the side of the object being convex in a paraxial region of it and a surface on the side of the image being concave in a paraxial region of it. The seventh element of E7 lens is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the seventh E7 lens element has three inflection points. The image-side surface of the seventh E7 lens element has an inflection point. The object-side surface of the seventh E7 lens element has a critical point in an off-axis region of the element. The image-side surface of the seventh E7 lens element has a critical point in an off-axis region of the element.

[0172] The E8 filter is made of glass material and located between the seventh element of E7 lenses and the IMG imaging surface, and will not affect the focal length of the optical lens assembly. The IS image sensor is disposed on or near the IMG imaging surface of the optical lens array.

[0173] The detailed optical data of the 4th modality is shown in Table 4A and the aspherical surface data is shown in Table 4B below.

[0174] In the 4th modality, the equation of the aspherical surface profiles of the aforementioned lens elements is the same as the equation of the 1st modality. Furthermore, the definitions of these parameters shown in Table 4C are the same as those established in the 1st modality with corresponding values for the 4th modality, therefore an explanation in this regard will not be provided again.

[0175] In addition, these parameters can be calculated from Table 4A and Table 4B as the following values and satisfy the following conditions:

5th Modality

[0176] Figure 9 is a schematic view of an image capture unit according to the 5th embodiment of the present disclosure. Figure 10 shows, in order from left to right, spherical aberration curves, astigmatic field curves and an image capture unit distortion curve according to the 5th modality. In Figure 9, the image capture unit 5 includes the optical lens assembly (its reference number is omitted) of the present disclosure and an IS image sensor. The optical lens assembly includes, in order from one object side to one image side along an optical axis, a first lens element E1, a second lens element E2, an aperture stop ST, a third lens element E3 lens, a fourth E4 lens element, an S1 stopper, a fifth E5 lens element, a sixth E6 lens element, a seventh E7 lens element, an E8 filter, and an IMG image surface. The optical lens assembly includes seven lens elements (E1, E2, E3, E4, E5, E6 and E7) with no additional lens elements disposed between each of the seven adjacent lens elements.

[0177] The first element of E1 lenses with negative refractive power has a surface on the side of the object being concave in a paraxial region of it and a surface on the side of the image being concave in a paraxial region of it. The first E1 lens element is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the first E1 lens element has an inflection point. The image side surface of the first E1 lens element has an inflection point. The object-side surface of the first E1 lens element has a critical point in an off-axis region of the element.

[0178] The second element of E2 lenses with negative refractive power has a surface on the side of the object being convex in a paraxial region of it and a surface on the side of the image being concave in a paraxial region of it. The second E2 lens element is made of plastic material and has the object side surface and the image side surface both being aspherical. The object side surface of the second E2 lens element has an inflection point.

[0179] The third element of E3 lenses with positive refractive power has a surface on the side of the object being convex in a paraxial region of it and a surface on the side of the image being convex in a paraxial region of it. The third E3 lens element is made of plastic material and has the object side surface and the image side surface both being aspherical.

[0180] The fourth element of E4 lenses with negative refractive power has a surface on the side of the object being convex in a paraxial region of it and a surface on the side of the image being concave in a paraxial region of it. The fourth E4 lens element is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the fourth E4 lens element has an inflection point. The image-side surface of the fourth E4 lens element has two inflection points. The object-side surface of the fourth E4 lens element has a critical point in an off-axis region of the element.

[0181] The fifth element of E5 lenses with positive refractive power has a surface on the side of the object being concave in a paraxial region of it and a surface on the side of the image being convex in a paraxial region of it. The fifth element of E5 lens is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the fifth E5 lens element has an inflection point. The image-side surface of the fifth E5 lens element has an inflection point.

[0182] The sixth element of E6 lenses with negative refractive power has a surface on the side of the object being convex in a paraxial region of it and a surface on the side of the image being concave in a paraxial region of it. The sixth element of E6 lens is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the sixth E6 lens element has an inflection point. The image-side surface of the sixth E6 lens element has an inflection point. The object-side surface of the sixth E6 lens element has a critical point in an off-axis region of the element. The image-side surface of the sixth E6 lens element has a critical point in an off-axis region of the element.

[0183] The seventh element of E7 lenses with positive refractive power has a surface on the side of the object being convex in a paraxial region of it and a surface on the side of the image being concave in a paraxial region of it. The seventh element of E7 lens is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the seventh E7 lens element has four inflection points. The image-side surface of the seventh E7 lens element has two inflection points. The object-side surface of the seventh E7 lens element has a critical point in an off-axis region of the element. The image-side surface of the seventh E7 lens element has a critical point in an off-axis region of the element.

[0184] The E8 filter is made of glass material and located between the seventh element of E7 lenses and the IMG imaging surface, and will not affect the focal length of the optical lens assembly. The IS image sensor is disposed on or near the IMG imaging surface of the optical lens assembly.

[0185] The detailed optical data of the 5th modality are shown in Table 5A and the aspherical surface data are shown in Table 5B below.

[0186] In the 5th modality, the equation of the aspherical surface profiles of the aforementioned lens elements is the same as the equation of the 1st modality. Furthermore, the definitions of these parameters shown in Table 5C are the same as those established in the 1st modality with corresponding values for the 5th modality, therefore an explanation in this regard will not be provided again.

[0187] In addition, these parameters can be calculated from Table 5A and Table 5B as the following values and satisfy the following conditions:

6th Modality

[0188] Figure 11 is a schematic view of an image capture unit according to the 6th embodiment of the present disclosure. Figure 12 shows, in order from left to right, spherical aberration curves, astigmatic field curves and an image capture unit distortion curve according to the 6th modality. In Figure 11, the image capture unit 6 includes the optical lens assembly (its reference number is omitted) of the present disclosure and an IS image sensor. The optical lens assembly includes, in order from one object side to one image side along an optical axis, a first lens element E1, a second lens element E2, an aperture stop ST, a third lens element E3 lens, a fourth E4 lens element, an S1 stopper, a fifth E5 lens element, a sixth E6 lens element, a seventh E7 lens element, an E8 filter, and an IMG image surface. The optical lens assembly includes seven lens elements (E1, E2, E3, E4, E5, E6 and E7) with no additional lens elements disposed between each of the seven adjacent lens elements.

[0189] The first element of E1 lenses with negative refractive power has a surface on the side of the object being concave in a paraxial region of it and a surface on the side of the image being convex in a paraxial region of it. The first E1 lens element is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the first E1 lens element has two inflection points. The image side surface of the first E1 lens element has two inflection points. The object-side surface of the first E1 lens element has a critical point in an off-axis region of the element. The image-side surface of the first E1 lens element has a critical point in an off-axis region thereof.

[0190] The second element of E2 lenses with positive refractive power has a surface on the side of the object being convex in a paraxial region of it and a surface on the side of the image being concave in a paraxial region of it. The second E2 lens element is made of plastic material and has the object side surface and the image side surface both being aspherical. The object side surface of the second E2 lens element has two inflection points.

[0191] The third element of E3 lenses with positive refractive power has a surface on the side of the object being convex in a paraxial region of it and a surface on the side of the image being convex in a paraxial region of it. The third E3 lens element is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the third E3 lens element has an inflection point.

[0192] The fourth element of E4 lenses with negative refractive power has a surface on the side of the object being concave in a paraxial region of it and a surface on the side of the image being concave in a paraxial region of it. The fourth E4 lens element is made of plastic material and has the object side surface and the image side surface both being aspherical. The image-side surface of the fourth E4 lens element has two inflection points. The image-side surface of the fourth E4 lens element has a critical point in an off-axis region of the element.

[0193] The fifth element of E5 lenses with positive refractive power has a surface on the side of the object being concave in a paraxial region of it and a surface on the side of the image being convex in a paraxial region of it. The fifth element of E5 lens is made of glass material and has the object side surface and the image side surface both being aspherical. The object-side surface of the fifth E5 lens element has an inflection point. The image-side surface of the fifth E5 lens element has an inflection point. The object-side surface of the fifth E5 lens element has a critical point in an off-axis region of the element.

[0194] The sixth element of E6 lenses with positive refractive power has a surface on the side of the object being convex in a paraxial region of it and a surface on the side of the image being concave in a paraxial region of it. The sixth element of E6 lens is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the sixth E6 lens element has an inflection point. The image-side surface of the sixth E6 lens element has an inflection point. The object-side surface of the sixth E6 lens element has a critical point in an off-axis region of the element. The image-side surface of the sixth E6 lens element has a critical point in an off-axis region of the element.

[0195] The seventh element of E7 lenses with negative refractive power has a surface on the side of the object being convex in a paraxial region of it and a surface on the side of the image being concave in a paraxial region of it. The seventh element of E7 lens is made of plastic material and has the object side surface and the image side surface both being aspherical. The object-side surface of the seventh E7 lens element has an inflection point. The image-side surface of the seventh E7 lens element has an inflection point. The object-side surface of the seventh E7 lens element has a critical point in an off-axis region of the element. The image-side surface of the seventh E7 lens element has a critical point in an off-axis region of the element.

[0196] The E8 filter is made of glass material and located between the seventh element of E7 lenses and the IMG imaging surface, and will not affect the focal length of the optical lens assembly. The IS image sensor is disposed on or near the IMG imaging surface of the optical lens array.

[0197] The detailed optical data of the 6th modality are shown in Table 6A and the aspherical surface data are shown in Table 6B below.

[0198] In the 6th modality, the equation of the aspherical surface profiles of the aforementioned lens elements is the same as the equation of the 1st modality. Furthermore, the definitions of these parameters shown in Table 6C are the same as those established in the 1st modality with corresponding values for the 6th modality, therefore an explanation in this regard will not be provided again.

[0199] In addition, these parameters can be calculated from Table 6A and Table 6B as the following values and satisfy the following conditions:

7th Modality

[0200] Figure 13 is a perspective view of an image capture unit according to the 7th embodiment of the present disclosure. In this embodiment, an image capture unit 100 is a camera module including a lens unit 101, a drive device 102, an image sensor 103 and an image stabilizer 104. The lens unit 101 includes the lens assembly optics disclosed in the 1st embodiment, a barrel and a support member (their reference numbers are omitted) for containing the optical lens assembly. However, the lens unit 101 may alternatively be provided with the optical lens assembly disclosed in other embodiments of the present disclosure, and the present disclosure is not limited thereto. The image light converges on the lens unit 101 of the image capture unit 100 to generate an image with the drive device 102 used for image focusing on the image sensor 103, and the generated image is then transmitted digitally to another electronic component. for further processing.

[0201] The drive device 102 can have autofocus functionality and different drive configurations can be achieved through the use of voice coil motors (VCM), micro electromechanical systems (MEMS), piezoelectric systems or memory alloy materials in shape. The drive device 102 is conducive to getting a better image position from the lens unit 101, so that a clear image of the viewed object can be captured by the lens unit 101 with different object distances. Image sensor 103 (eg, CCD or CMOS), which can exhibit high photosensitivity and low noise, is arranged on the image surface of the optical lens assembly to provide higher image quality.

[0202] The image stabilizer 104, such as an accelerometer, a gyro sensor and a Hall effect sensor, is configured to work with the drive device 102 to provide optical image stabilization (OIS). Drive device 102 working with image stabilizer 104 is conducive to compensating for pan and tilt of lens unit 101 to reduce blur associated with motion during exposure. In some cases, compensation can be provided by electronic image stabilization (EIS) with image processing software, thereby improving image quality when moving or in low-light conditions.

8th Modality

[0203] Figure 14 is a perspective view of an electronic device according to the 8th embodiment of the present disclosure. Figure 15 is another perspective view of the electronic device in Figure 14.

[0204] In this embodiment, an electronic device 200 is a smartphone including the image capture unit 100 disclosed in the 7th embodiment, an image capture unit 100a, an image capture unit 100b, an image capture unit 100c and a display unit 201. As shown in Figure 14, the image capture unit 100, the image capture unit 100a and the image capture unit 100b are disposed on the same side of the electronic device 200 and face the same side , and the image capture units 100, 100a and 100b each have a single focal point. As shown in Figure 15, the image capture unit 100c and the display unit 201 are arranged on the opposite side of the electronic device 200, so that the image capture unit 100c can be a front camera of the electronic device 200 to take selfies, but the present disclosure is not limited to them. Furthermore, each of the image capture units 100a, 100b and 100c may include the optical lens assembly of the present disclosure and may have a configuration similar to that of the image capture unit 100. In detail, each of the image capture units 100a, 100b, and 100c may include a lens unit, a drive device, an image sensor, and an image stabilizer, and each lens unit may include an optical lens assembly, such as the optical lens assembly of present disclosure, a barrel and a support member for holding the optical lens assembly.

[0205] The image capture unit 100 is a wide-angle image capture unit, the image capture unit 100a is a telephoto image capture unit, the image capture unit 100b is a wide-angle imaging unit and the 100c image capture unit is a wide-angle imaging 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 various magnification ratios to meet the optical zoom functionality requirement. Furthermore, as shown in Figure 15, the image capture unit 100c can have a non-circular aperture and the optical elements in the image capture unit 100c can have one or more edges trimmed at the outer diameter positions thereof to match the not circular opening. Therefore, it is favorable to further reduce the size of the image capture unit 100c, thereby increasing the area ratio of the display unit 201 to the electronic device 200 and reducing the thickness of the electronic device 200. In this embodiment, the electronic device device 200 includes multiple image capture units 100, 100a, 100b and 100c, but the present disclosure is not limited to the number and arrangement of image capture units.

9th Modality

[0206] Figure 16 is a perspective view of an electronic device according to the 9th embodiment of the present disclosure. Figure 17 is another perspective view of the electronic device in Figure 16. Figure 18 is a block diagram of the electronic device in Figure 16.

[0207] In this embodiment, an electronic device 300 is a smartphone including the image capture unit 100 disclosed in the 7th embodiment, an image capture unit 100d, an image capture unit 100e, an image capture unit 100f, an image capture unit 100g, a flash module 301, an auxiliary focus module 302, an image signal processor 303, a display module 304 and an image software processor 305. The image capture unit 100 and the image capture unit 100d are disposed on the same side as the electronic device 300. The focus of the auxiliary module 302 may be a laser range finder or a ToF (time of flight) module, but the present disclosure is not limited thereto. The image capture unit 100e, the image capture unit 100f, the image capture unit 100g and the display module 304 are disposed on the opposite side of the electronic device 300 and the display module 304 can be a user interface , so that the image capture units 100e, 100f, 100g can be front cameras of the electronic device 300 for taking selfies, but the present disclosure is not limited to that. Furthermore, each of the image capturing units 100d, 100e, 100f and 100g may include the optical lens assembly of the present disclosure and may have a configuration similar to that of the image capturing unit 100. In detail, each of the units 100d, 100e, 100f, and 100g image capture devices may include a lens unit, a drive device, an image sensor, and an image stabilizer, and each lens unit may include an optical lens assembly, such as the optical lens assembly of the present disclosure, a barrel and a support member for holding the optical lens assembly.

[0208] The image capture unit 100 is a wide-angle image capture unit, the image capture unit 100d is a wide-angle image capture unit, the image capture unit 100e is a wide-angle image capture, the 100f image capture unit is an ultra wide-angle image capture unit, and the 100g image capture unit is a ToF image capture unit. In this embodiment, the image capture units 100, 100d, 100e and 100f have different fields of view, so that the electronic device 300 can have various magnification ratios to meet the optical zoom functionality requirement. In addition, the 100g image capturing unit can determine the depth information of the imaged object. In this embodiment, the electronic device 300 includes multiple image capture units 100, 100d, 100e, 100f and 100g, but the present disclosure is not limited to the number and arrangement of the image capture units.

[0209] When a user captures images of an object 306, light rays converge on the image capture unit 100 or on the image capture unit 100d to generate images and the flash module 301 is activated for supplemental light. Focus assist module 302 detects object distance from imaged object 306 to achieve fast autofocusing. Image signal processor 303 is configured to optimize the captured image to improve image quality. The beam of light emitted from the auxiliary focus module 302 can be conventional infrared or laser. In addition, light rays can converge on the 100e, 100f or 100g image capture unit to generate images. The display module 304 may include a touch screen and the user is able to interact with the display module 304 and the image software processor 305 having multiple functions to capture images and complete image processing. Alternatively, the user can capture images through a physical button. Image processed by image software processor 305 may be displayed on display module 304.

10th Modality

[0210] Figure 19 is a perspective view of an electronic device according to the 10th embodiment of the present disclosure.

[0211] In this embodiment, an electronic device 400 is a smartphone including the image capture unit 100 disclosed in the 7th embodiment, an image capture unit 100h, an image capture unit 100i, a flash module 401, an auxiliary module focus, an image signal processor, a display module, and a software image processor (not shown). The image capturing unit 100, the image capturing unit 100h and the image capturing unit 100i are arranged on the same side of the electronic device 400, while the display module is arranged on the opposite side of the electronic device 400. , each of the image capture units 100h and 100i may include the optical lens assembly of the present disclosure and may have a configuration similar to that of the image capture unit 100, and details in this regard will not be given again.

[0212] Image capture unit 100 is a wide-angle image capture unit, image capture unit 100h is a telephoto image capture unit, and image capture unit 100i is a capture unit ultra wide angle image. In this embodiment, the image capture units 100, 100h and 100i have different fields of view, so that the electronic device 400 can have various magnification ratios to meet the optical zoom functionality requirement. In addition, the image capture unit 100h can be a telephoto image capture unit with a light bending element configuration, so that the total track length of the image capture unit 100h is not limited by thickness. of the electronic device 400. Furthermore, the light-folding element configuration of the image capture unit 100h may be similar to, for example, one of the structures shown in Figure 22 to Figure 24, which may be referred to the corresponding previous descriptions to Figure 22 to Figure 24, and details in this respect will not be given again. In this embodiment, electronic device 400 includes multiple image capture units 100, 100h and 100i, but the present disclosure is not limited to the number and arrangement of image capture units. When a user captures images of an object, light rays converge on the image capture unit 100, 100h or 100i to generate images, and the flash module 401 is activated for supplemental light. Furthermore, the subsequent processes are carried out similarly to the aforementioned embodiment, so details in this regard will not be provided again.

11th Modality

[0213] Figure 20 is a perspective view of an electronic device according to the 11th embodiment of the present disclosure.

[0214] In this embodiment, an electronic device 500 is a smartphone including the image capture unit 100 disclosed in the 7th embodiment, an image capture unit 100j, an image capture unit 100k, an image capture unit 100m, one 100n image capture unit, one 100p image capture unit, one 100q image capture unit, one 100r image capture unit, one 100s image capture unit, one flash module 501, one focus assist module , an image signal processor, a display module and a software image processor (not shown). The image capture units 100, 100j, 100k, 100m, 100n, 100p, 100q, 100r and 100s are disposed on the same side of the electronic device 500, while the display module is disposed on the opposite side of the electronic device 500. ,, each of the image capture units 100j, 100k, 100m, 100n, 100p, 100q, 100r and 100s may include the optical lens assembly of the present disclosure and may have a configuration similar to that of the image capture unit 100 and details in this regard will not be provided again.

[0215] The image capture unit 100 is a wide-angle image capture unit, the image capture unit 100j is a telephoto image capture unit, the image capture unit 100k is a of telephoto imaging, the 100m image capture unit is a wide-angle image capture unit, the 100n image capture unit is an ultra wide-angle image capture unit, the 100p image capture unit is an ultra wide-angle image capture unit, the 100q image capture unit is a telephoto image capture unit, the 100r image capture unit is a telephoto image capture unit, and the 100s image capture unit it is a ToF image capture unit. In this embodiment, the image capture units 100, 100j, 100k, 100m, 100n, 100p, 100q and 100r have different fields of view, so that the electronic device 500 can have various magnification ratios to meet the functionality requirement of optical zoom. Furthermore, each of the image capture units 100j and 100k may be a telephoto image capture unit with a light bending element configuration. Furthermore, the configuration of the light bending element of each image capture unit 100j and 100k may be similar to, for example, one of the structures shown in Figure 22 to Figure 24, which can be referred to the previous descriptions corresponding to Figure 22 to Figure 24, and details in this respect will not be given again. Furthermore, the image capture unit 100s can determine the depth information of the imaged object. In this embodiment, electronic device 500 includes multiple image capture units 100, 100j, 100k, 100m, 100n, 100p, 100q, 100r and 100s, but the present disclosure is not limited to the number and arrangement of image capture units. When a user captures images of an object, light rays converge on the image capture unit 100, 100j, 100k, 100m, 100n, 100p, 100q, 100r or 100s to generate images, and the flash module 501 is activated to supplement of light. Furthermore, the subsequent processes are carried out similarly to the aforementioned modalities, and details in this regard will not be provided again.

[0216] The smartphone in this embodiment is just exemplary to show the image capture unit of the present disclosure installed in an electronic device and the present disclosure is not limited to it. The image capture unit can optionally be applied to optical systems with moving focus. In addition, the optical lens assembly of the image capture unit features good aberration correction capability and high image quality, which can be applied in 3D (three-dimensional) image capture applications in products such as digital cameras, mobile devices, digital tablets, smart televisions, network surveillance devices, dashboard cameras, vehicle backup cameras, multi-camera devices, image recognition systems, motion detection input devices, wearable devices and other electronic imaging devices.

[0217] The foregoing description, for purposes of explanation, has been described with reference to specific modalities. It should be noted that TABLES 1A-6C show different data for different modalities; however, the data for the different modalities are obtained from experiments. Embodiments have been chosen and described to better explain the principles of the disclosure and their practical applications, to thereby enable others skilled in the art to better utilize the disclosure and various modalities with various modifications suited to the particular use contemplated. The embodiments shown above and the accompanying drawings are exemplary and are not intended to be exhaustive or to limit the scope of the present disclosure to the precise forms disclosed. Many modifications and variations are possible in view of the above teachings.

Claims (29)

Optical lens assembly, characterized in that it comprises seven lens elements, the seven lens elements being, in order from one side of the object to one side of the image along an optical path, a first lens element, a second lens element , a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element, and each of the seven lens elements having a surface on the side of the object facing the side of the object and a surface on the image side facing the image side; wherein the object side surface of the first lens element is concave in a paraxial region thereof, the third lens element has positive refractive power, the object side surface of the sixth lens element is convex in a paraxial region thereof, the image-side surface of the sixth lens element is concave in a paraxial region thereof, the image-side surface of the seventh lens element is concave in a paraxial region thereof, and the image-side surface of the seventh lens element has at least one inflection point; where a radius of curvature of the image side surface of the sixth lens element is R12, a radius of curvature of the image side surface of the seventh lens element is R14, an Abbe number of the fourth lens element is V4, a Abbe number of the seventh lens element is V7, and the following conditions are satisfied:
0.45 < R12/R14 <12; It is
1.30 < V7/V4 < 2.60. Set of optical lenses, according to claim 1, characterized in that the object-side surface of the first lens element has at least one critical point in a region off-axis thereof, a radius of curvature of the object-side surface of the first lens element is R1, a radius of curvature of the image side surface of the first lens element is R2, and the following condition is satisfied: -2.50 < (R1+R2)/(R1-R2) < 0.60. Optical lens assembly according to claim 1, characterized in that the first lens element has negative refractive power, and the object-side surface of the third lens element is convex in a paraxial region thereof. Optical lens assembly according to claim 1, characterized in that a focal length of the optical lens assembly is f, an axial distance between the first lens element and the second lens element is T12, an axial distance between the second lens element of lenses and the third lens element is T23, and the following condition is satisfied: 2.50 < f/(T12+T23) < 14.00. Optical lens assembly according to claim 1, characterized in that it further comprises an aperture stop, wherein an axial distance between the aperture stop and an imaging surface is SL, a focal length of the optical lens assembly is f, and the following condition is satisfied: 1.60 < SL/f < 2.50. Optical lens assembly according to claim 1, characterized in that a radius of curvature of the object-side surface of the first lens element is R1, a radius of curvature of the object-side surface of the seventh lens element is R13, and the following condition is satisfied: -0.50 < (R1+R13)/(R1-R13) < 2.50. Set of optical lenses according to claim 1, characterized in that a refractive index of the fourth lens element is N4, a refractive index of the sixth lens element is N6, and the following condition is satisfied: 1.60 < (N4+ N6)/2 < 1.85. Image capture unit, characterized in that it comprises: set of optical lenses, as defined in claim 1; and an image sensor disposed on an imaging surface of the optical lens assembly. Electronic device, characterized in that it comprises: the image capture unit, as defined in claim 8. Optical lens assembly, characterized in that it comprises seven lens elements, the seven lens elements being, in order from one side of the object to one side of the image along an optical path, a first lens element, a second lens element , a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element, and each of the seven lens elements having a surface on the side of the object facing the side of the object and a surface on the image side facing the image side; wherein the object side surface of the first lens element is concave in a paraxial region thereof, and the third lens element has positive refractive power; wherein the optical lens assembly further comprises an aperture stop, an object-side surface curvature radius of the fifth lens element is R9, an image-side surface curvature radius of the sixth lens element is R12, a radius of curvature of the object-side surface of the seventh lens element is R13, a radius of curvature of the image-side surface of the seventh lens element is R14, a focal length of the optical lens assembly is f, a focal length composite of the first lens element and the second lens element is f12, 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 aperture stop and an imaging surface is SL, a central thickness of the seventh lens element is CT7, and the following conditions are satisfied: -0.75 < R12/R14 < 30; f/f12 < -0.10; 0.03 < (R9+R13)/(R9-R13); 1.03 < T23/T34 < 4.60; 1.60 < SL/f; and 5.40 < f/CT7 < 9.50. Optical lens assembly according to claim 10, characterized in that a maximum effective radius of the object-side surface of the first lens element is Y1R1, a maximum effective radius of the object-side surface of the third lens element is Y3R1, and the following condition is satisfied: 2.75 < Y1R1/Y3R1 < 4.70. Optical lens assembly according to claim 10, characterized in that a central thickness of the third lens element is CT3, an axial distance between the fifth lens element and the sixth lens element is T56, and the following condition is satisfied: 15.0 < CT3/T56 < 40.0. Optical lens assembly according to claim 10, characterized in that the focal length of the optical lens assembly is f, a central thickness of the second lens element is CT2, and the following condition is satisfied: 5.90 < f/CT2 < 11.00. Optical lens assembly according to claim 10, characterized in that the focal length of the optical lens assembly is f, a composite focal length of the fifth lens element and the sixth lens element is f56, and the following condition is satisfied: f/f56 < 0.60. Optical lens assembly according to claim 10, characterized in that the focal length of the optical lens assembly is f, a central thickness of the first lens element is CT1, a central thickness of the second lens element is CT2, and the following condition is satisfied: 1.50 < f/(CT1+CT2) < 4.50. Optical lens assembly according to claim 10, characterized in that a radius of curvature of the object-side surface of the first lens element is R1, a radius of curvature of the image-side surface of the first lens element is R2, and the following condition is satisfied: -2.50 < (R1+R2)/(R1-R2) < 0.60. Optical lens assembly, characterized in that it comprises seven lens elements, the seven lens elements being, in order from one side of the object to one side of the image along an optical path, a first lens element, a second lens element , a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element, and each of the seven lens elements having a surface on the side of the object facing the side of the object and a surface on the image side facing the image side; wherein the object side surface of the first lens element is concave in a paraxial region thereof, the third lens element has positive refractive power, and the fifth lens element has positive refractive power; where an object-side surface curvature radius of the fifth lens element is R9, an image-side surface curvature radius of the fifth lens element is R10, an object-side surface curvature radius of the sixth lens element is R11, a radius of curvature of the image side surface of the sixth lens element is R12, a radius of curvature of the object side surface of the seventh lens element is R13, a radius of curvature of the surface of the of the image of the seventh lens element is R14, a focal length of the optical lens assembly is f, a composite focal length of the fifth lens element and the sixth lens element is f56, a composite focal length of the sixth lens element and the seventh lens element is f67, 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, a center thickness of the seventh lens element is lens is CT7, and the following conditions are satisfied:
-1.25 <R12/R14;
-1.50 < f/f56 <0.68;
-0.30 < f/f67 <1.70;
-0.85 < (R10+R11)/(R10-R11) <1.25;
(R9+R13)/(R9-R13) <3.00;
1.05 < T23/T34 <3.70; It is
f/CT7 < 11.5. Optical lens assembly according to claim 17, characterized in that an axial distance between the first lens element and the second lens element is T12, the axial distance between the second lens element and the third lens element is T23, the axial distance between the third lens element and the fourth lens element is T34, an axial distance between the fourth lens element and the fifth lens element is T45, an axial distance between the fifth lens element and the sixth lens element lenses is T56, an axial distance between the sixth lens element and the seventh lens element is T67, and the following condition is satisfied: 0.55 < (T12+T23)/(T34+T45+T56+T67) < 1 ,50. Optical lens assembly according to claim 17, characterized in that it further comprises an aperture stop, wherein an axial distance between the aperture stop and an imaging surface is SL, the focal length of the optical lens assembly is f, and the following condition is satisfied: 1.60 < SL/f < 2.70. Optical lens assembly according to claim 17, characterized in that an axial distance between the first lens element and the second lens element is T12, the axial distance between the second lens element and the third lens element is T23, a sum of axial distances between each of all adjacent lens elements of the optical lens array is ΣAT, and the following condition is satisfied: 0.30 < (T12+T23)/ΣAT < 0.70. Optical lens assembly according to claim 17, characterized in that the object side surface of the fifth lens element is concave in a paraxial region thereof, the image side surface of the fifth lens element is convex in a region of the same, half of a maximum field of view of the optical lens assembly is HFOV, and the following condition is satisfied: 59.0 [degrees] < HFOV < 73.0 [degrees] . Set of optical lenses according to claim 17, characterized in that a refractive index of the second lens element is N2, a refractive index of the fourth lens element is N4, and the following condition is met: 1.60 < (N2+ N4)/2 < 1.72. Optical lens assembly according to claim 17, characterized in that an Abbe number of the first lens element is V1, an Abbe number of the second lens element is V2, an Abbe number of the third lens element is V3, an Abbe number of the fourth lens element is V4, an Abbe number of the fifth lens element is V5, an Abbe number of the sixth lens element is V6, an Abbe number of the seventh lens element is V7, an Abbe number of the ith element of lenses is Vi, a refractive index of the first lens element is N1, a refractive index of the second lens element is N2, a refractive index of the third lens element is N3, a refractive index of the fourth lens element is N4, an index refractive index of the fifth lens element is N5, a refractive index of the sixth lens element is N6, a refractive index of the seventh lens element is N7, a refractive index of the ith lens element is Ni, and at least one element of lens of the optical lens assembly that satisfies the following condition: 5.0 < Vi/Ni < 11.9, where i = 1, 2, 3, 4, 5, 6 or 7. Optical lens assembly, characterized in that it comprises seven lens elements, the seven lens elements being, in order from one side of the object to one side of the image along an optical path, a first lens element, a second lens element , a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element, and each of the seven lens elements having a surface on the side of the object facing the side of the object and a surface on the image side facing the image side; wherein the first lens element has negative refractive power, the object side surface of the first lens element is concave in a paraxial region thereof, the object side surface of the second lens element is convex in a paraxial region thereof, the third lens element has positive refractive power, the object-side surface of the sixth lens element is convex in a paraxial region thereof, the image-side surface of the sixth lens element is concave in a region paraxially thereof, the object-side surface of the seventh lens element is convex in a paraxial region thereof, the image-side surface of the seventh lens element is concave in a paraxial region thereof, and the image-side surface of the seventh lens element image of the seventh lens element has at least one inflection point; where a radius of curvature of the object side surface of the first lens element is R1, a radius of curvature of the image side surface of the first lens element is R2, a radius of curvature of the object side surface of the second lens element is R3, a focal length of the optical lens assembly is f, a focal length of the first lens element is f1, a focal length of the seventh lens element is f7, a central thickness of the fifth lens element is CT5, an axial distance between the fourth lens element and the fifth lens element is T45, an axial distance between the object-side surface of the first lens element and an imaging surface is TL, a maximum image height of the lens assembly optics is ImgH, and the following conditions are satisfied:
(R1+R2)/(R1-R2) <0;
-0.50 < f/f7 <0.60;
0.50 < CT5/T45 <7.50;
-3.00 < f/f1 <-0.10;
0.50 < f/R3 <1.90; It is
TL/ImgH < 2.00. Optical lens assembly according to claim 24, characterized in that the object-side surface of the first lens element has at least one inflection point, a maximum value between central thicknesses of all lens elements of the optical lens assembly be CT_MAX, the focal length of the optical lens assembly is f, and the following condition is satisfied: 0.30 < CT_MAX/f < 0.50. Optical lens assembly according to claim 24, characterized in that the focal length of the optical lens assembly is f, a composite focal length of the first lens element and the second lens element is f12, and the following condition is satisfied: -0.49 < f/f12 < -0.10. Optical lens assembly according to claim 24, characterized in that a radius of curvature of the surface on the image side of the fifth lens element is R10, a radius of curvature of the surface of the object side of the sixth lens element is R11, and the following condition is satisfied: -0.85 < (R10+R11)/(R10-R11) < 1.25. Set of optical lenses according to claim 24, characterized in that a refractive index of the fourth lens element is N4, a refractive index of the sixth lens element is N6, and the following condition is met: 1.60 < (N4+ N6)/2 < 1.85. Assembly of optical lenses according to claim 24, characterized in that an Abbe number of the first lens element is V1, an Abbe number of the second lens element is V2, an Abbe number of the third lens element is V3, an Abbe number of the fourth lens element is V4, an Abbe number of the fifth lens element is V5, an Abbe number of the sixth lens element is V6, an Abbe number of the seventh lens element is V7, an Abbe number of the ith element of lenses is Vi, a refractive index of the first lens element is N1, a refractive index of the second lens element is N2, a refractive index of the third lens element is N3, a refractive index of the fourth lens element is N4, an index refractive index of the fifth lens element is N5, a refractive index of the sixth lens element is N6, a refractive index of the seventh lens element is N7, a refractive index of the ith lens element is Ni, and at least one element of lens of the optical lens assembly that satisfies the following condition: 5.0 < Vi/Ni < 11.9, where i = 1, 2, 3, 4, 5, 6 or 7.

Images