CN110967805B

CN110967805B - Optical camera lens assembly, image capturing module and electronic device

Info

Publication number: CN110967805B
Application number: CN201811154644.0A
Authority: CN
Inventors: 邹海荣; 刘彬彬; 邹金华
Original assignee: Jiangxi Jingchao Optical Co Ltd
Current assignee: Jiangxi Jingchao Optical Co Ltd
Priority date: 2018-09-30
Filing date: 2018-09-30
Publication date: 2022-08-30
Anticipated expiration: 2038-09-30
Also published as: CN110967805A

Abstract

The invention discloses an optical camera lens assembly, an image capturing module and an electronic device. The optical image capturing lens assembly comprises, in order from an object side to an image side: the lens system comprises a first lens element with positive refractive power, a second lens element with positive refractive power, a third lens element with negative refractive power, a fourth lens element with negative refractive power, a fifth lens element with positive refractive power and a sixth lens element with negative refractive power. The object side surface and the image side surface of the fifth lens are both aspheric surfaces, and the object side surface is provided with at least one point of inflection. The object side surface and the image side surface of the sixth lens are both aspheric surfaces, and at least one surface of the object side surface and the image side surface is provided with at least one inflection point. The optical image pickup lens group satisfies the following conditional expression: SDmax/EPD < 1.35. The optical camera lens group of the embodiment of the invention is beneficial to the miniaturization of the optical camera lens group, can provide larger entrance pupil and enlarge aperture, is beneficial to improving the imaging quality, and simultaneously increases the service time and space of a carrier (such as an electronic device).

Description

Optical camera lens assembly, image capturing module and electronic device

Technical Field

The present invention relates to the field of optical imaging technologies, and in particular, to an optical imaging lens assembly, an image capturing module and an electronic device.

Background

With the development of technology, electronic devices tend to be light, thin and small, and each component inside the electronic device is required to have a smaller size. The size of the imaging lens must be miniaturized in the market trend. In addition, due to the reduction of the pixel area of the photosensitive element caused by the progress of the semiconductor process technology, the photographic lens is gradually developed in the high pixel field, and the requirement for the imaging quality is higher and higher.

The conventional camera lens mounted on an electronic device mostly adopts a five-piece lens structure, however, with the prevalence of high-specification portable electronic devices (Mobile Terminal) such as Smart phones (Smart phones), Tablet PCs (Tablet PCs), and Wearable devices (Wearable apparatuses), the requirements of the camera lens on pixel and imaging quality are rapidly rising, and the conventional five-piece camera lens cannot meet the requirements.

Disclosure of Invention

The embodiment of the invention provides an optical camera lens assembly, an image capturing module and an electronic device.

The optical imaging lens assembly according to an embodiment of the present invention, in order from an object side to an image side, includes: the lens system comprises a first lens element with positive refractive power, a second lens element with positive refractive power, a third lens element with negative refractive power, a fourth lens element with negative refractive power, a fifth lens element with positive refractive power and a sixth lens element with negative refractive power. The object side surface of the first lens is a concave surface at the circumference, and the image side surface of the first lens is a convex surface. The object side surface of the second lens is convex at the circumference. The object side surface and the image side surface of the third lens are both concave surfaces at the circumference. The object side surface of the fifth lens is concave at the circumference. The object side surface and the image side surface of the fifth lens are both aspheric surfaces, and the object side surface is provided with at least one point of inflection. The image side surface of the sixth lens is a concave surface at the optical axis. The object side surface and the image side surface of the sixth lens are both aspheric surfaces, and at least one of the object side surface and the image side surface has at least one inflection point. The optical image pickup lens group satisfies the following conditional expressions: SDmax/EPD < 1.35; SDmax is the maximum value of the maximum effective radius of the object side surface and the image side surface of each lens in the optical image pickup lens group, and EPD is the entrance pupil diameter of the optical image pickup lens group.

The optical camera lens assembly of the embodiment of the invention is beneficial to the miniaturization of the optical camera lens assembly by reasonably configuring the six lenses and meeting the conditional expression SDmax/EPD <1.35, can provide a larger entrance pupil, enlarge an aperture, be beneficial to improving the imaging quality and simultaneously increase the service time and space of a carrier (such as an electronic device).

In some embodiments, the optical imaging lens group satisfies the following condition: the optical image pickup lens group satisfies the following conditional expressions: SDmax/EPD < 1.05.

When the condition is satisfied, the miniaturization of the optical image pickup lens group is facilitated, a larger entrance pupil can be provided, the aperture is enlarged, the imaging quality is improved, and the service time and the space of a carrier (such as an electronic device) are increased.

In some embodiments, the optical imaging lens group satisfies the following conditional expression: 0.7< (f1+ f5)/f2< 1.2; wherein f1 is the focal length of the first lens, f2 is the focal length of the second lens, and f5 is the focal length of the fifth lens.

When the condition is satisfied, the second lens element provides most of positive refractive power, and the first lens element and the fifth lens element share part of the positive refractive power, so that the focal power of the optical image capturing lens assembly is reasonably distributed, the sensitivity of the optical image capturing lens assembly is reduced, and the yield of products is improved.

In some embodiments, the optical imaging lens group satisfies the following conditional expression: -1.2< f34/f < -0.8; wherein f34 is a combined focal length of the third lens element and the fourth lens element, and f is a focal length of the optical image capturing lens assembly.

When the conditional expressions are satisfied, the third lens element and the fourth lens element provide negative refractive power for the optical image capturing lens assembly, the focal power is reasonably configured, and the spherical aberration of the optical image capturing lens assembly is corrected, and simultaneously, the balance of each aberration can be realized.

In some embodiments, the optical imaging lens group satisfies the following conditional expression: TTL/Imgh is less than or equal to 1.45; wherein, TTL is a distance on the optical axis from the object-side surface of the first lens element to the image plane, and Imgh is a maximum image height of the optical image capturing lens assembly.

When the above conditional expressions are satisfied, the optical image pickup lens group can satisfy both high pixel and miniaturization requirements.

In some embodiments, the optical imaging lens group satisfies the following conditional expression: TTL/Imgh is less than or equal to 1.35.

In some embodiments, the optical imaging lens group satisfies the following conditional expression: the | < SAG51| < 0.30, | < SAG52| < 0.76; SAG51 is the horizontal distance between the maximum effective diameter of the object side surface of the fifth lens and the optical axis of the object side surface of the fifth lens, and SAG52 is the horizontal distance between the maximum effective diameter of the image side surface of the fifth lens and the optical axis of the image side surface of the fifth lens.

When the condition is satisfied, the processing difficulty of the fifth lens can be reduced, and the yield is improved.

In some embodiments, the optical imaging lens group satisfies the following conditional expression: the | < SAG51| < 0.20, and | < SAG52| < 0.40.

In some embodiments, the optical imaging lens group satisfies the following conditional expression: (CT1+ CT2+ CT3)/TTL < 0.3; wherein CT1 is a central thickness of the first lens element, CT2 is a central thickness of the second lens element, CT3 is a central thickness of the third lens element, and TTL is a distance from an object-side surface of the first lens element to an image plane.

When the above conditional expressions are satisfied, the arrangement of the thicknesses of the first lens element, the second lens element, and the third lens element is advantageous for reducing the sensitivity of the optical imaging lens assembly while keeping the miniaturization thereof.

In some embodiments, the optical imaging lens group satisfies the following conditional expression: r10/f > 0.4; wherein R10 is a curvature radius of an object-side surface of the fifth lens element, and f is a focal length of the optical image capturing lens assembly.

When the condition is satisfied, the aberration can be avoided, and the high-order aberration generated by the fifth lens element can be further corrected, so that the imaging quality of the optical image capturing lens assembly is improved.

In some embodiments, the optical imaging lens group satisfies the following conditional expression: -1< R8/R9< 0; r8 is a radius of curvature of an object-side surface of the fourth lens, and R9 is a radius of curvature of an image-side surface of the fourth lens.

When the conditional expression is satisfied, the spherical aberration and the astigmatism can be effectively corrected by adjusting the curvature radius of the fourth lens, and the imaging quality of the optical shooting lens group is improved.

The image capturing module according to an embodiment of the present invention includes the optical image capturing lens assembly and the photosensitive element according to any one of the above embodiments. The photosensitive element is arranged at the image side of the optical shooting lens group.

In the image capturing module of the embodiment of the invention, the optical image capturing lens assembly is beneficial to miniaturization of the optical image capturing lens assembly by reasonably configuring the six lenses and meeting the conditional expression SDmax/EPD <1.35, and can provide a larger entrance pupil, enlarge an aperture, be beneficial to improving the imaging quality, and increase the use time and space of a carrier (such as an electronic device).

The electronic device of the embodiment of the invention comprises a shell and the image capturing module of the embodiment. The image capturing module is installed on the shell.

In the electronic device of the embodiment of the invention, the optical image pickup lens group is beneficial to the miniaturization of the optical image pickup lens group by reasonably configuring the six lenses and meeting the conditional expression SDmax/EPD <1.35, and can provide a larger entrance pupil, enlarge an aperture, be beneficial to improving the imaging quality and simultaneously increase the service time and the space of the electronic device.

Additional aspects and advantages of embodiments of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of an optical imaging lens assembly according to a first embodiment of the invention;

fig. 2 to 4 are a spherical aberration diagram (mm), an astigmatism diagram (mm) and a distortion diagram (%);

fig. 5 is a schematic structural view of an optical imaging lens assembly according to a second embodiment of the present invention;

fig. 6 to 8 are a spherical aberration diagram (mm), an astigmatism diagram (mm) and a distortion diagram (%);

fig. 9 is a schematic structural view of an optical imaging lens assembly according to a third embodiment of the present invention;

fig. 10 to 12 are a spherical aberration diagram (mm), an astigmatism diagram (mm), and a distortion diagram (%), respectively, of the optical imaging lens assembly according to the third embodiment of the present invention;

fig. 13 is a schematic structural view of an optical imaging lens assembly according to a fourth embodiment of the present invention;

fig. 14 to 16 are a spherical aberration diagram (mm), an astigmatism diagram (mm), and a distortion diagram (%), respectively, of the optical imaging lens group according to the fourth embodiment of the present invention;

fig. 17 is a schematic structural view of an optical imaging lens assembly according to a fifth embodiment of the present invention;

fig. 18 to 20 are a spherical aberration diagram (mm), an astigmatism diagram (mm), and a distortion diagram (%), respectively, of the optical imaging lens group according to the fifth embodiment of the present invention;

FIG. 21 is a schematic view of an image capturing module according to an embodiment of the present invention;

FIG. 22 is a schematic diagram of an electronic device according to an embodiment of the invention;

fig. 23 is another schematic structural diagram of an electronic device according to an embodiment of the invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and are not to be construed as limiting the present invention.

In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

Referring to fig. 1, 5, 9, 13 and 17, an optical imaging lens assembly 10 according to an embodiment of the present invention includes, in order from an object side to an image side: the first lens element L1 with positive refractive power, the second lens element L2 with positive refractive power, the third lens element L3 with negative refractive power, the fourth lens element L4 with negative refractive power, the fifth lens element L5 with positive refractive power, and the sixth lens element L6 with negative refractive power.

The object-side surface S1 of the first lens element L1 is concave at the circumference, and the image-side surface S2 is convex. The object-side surface S3 of the second lens L2 is convex at the circumference. The object-side surface S5 and the image-side surface S6 of the third lens L3 are both concave at the circumference. The object side S9 of the fifth lens L5 is concave at the circumference. The object-side surface S9 and the image-side surface S10 of the fifth lens L5 are aspheric, and the object-side surface S9 has at least one inflection point. The image-side surface S12 of the sixth lens element L6 is concave along the optical axis. The object-side surface S11 and the image-side surface S12 of the sixth lens element L6 are aspheric, and at least one of the object-side surface S11 and the image-side surface S12 has at least one inflection point.

The optical imaging lens group 10 satisfies the following conditional expressions: SDmax/EPD < 1.35; where SDmax is the maximum value of the maximum effective radii of the object-side surface and the image-side surface of each lens in the optical imaging lens assembly 10, and EPD is the entrance pupil diameter of the optical imaging lens assembly 10. Specifically, in some examples, TTL/Imgh can take on a value of 1.321, 1.335, 1.062, 1.256, 1.127, or other values less than 1.35.

The optical imaging lens assembly 10 according to the embodiment of the present invention is advantageous for miniaturization of the optical imaging lens assembly 10 by reasonably configuring the six lenses and satisfying the conditional expression SDmax/EPD <1.35, and can provide a larger entrance pupil, enlarge the aperture, and be advantageous for improving the imaging quality, and at the same time, increase the usage time and space of the carrier (e.g., the electronic device 1000 shown in fig. 22 or 23).

It can be understood that the optical lens assembly 10 can provide a larger entrance pupil, enlarge the aperture, and increase the amount of light entering, so that the optical lens assembly 10 can image more clearly. Therefore, the optical image capturing lens assembly 10 can be used in a strong light environment or a weak light environment, and the space for the electronic device mounted thereon is widened; the optical image pickup lens assembly 10 can be used in the daytime or at night, and the time for using an electronic device mounted thereon is widened.

Further, the provision of the inflection points on the fifth lens L5 and the sixth lens L6 can effectively suppress the angle at which the light rays of the off-axis field of view are incident on the photosensitive element 20 as shown in fig. 21, thereby correcting the aberration of the off-axis field of view and improving the imaging quality.

In some embodiments, the optical imaging lens group 10 satisfies the following condition: the optical imaging lens group 10 satisfies the following conditional expressions: SDmax/EPD < 1.05.

When the above conditional expressions are satisfied, the optical imaging lens assembly 10 is advantageously miniaturized, and a larger entrance pupil can be provided, the aperture can be enlarged, the imaging quality can be improved, and the service time and space of the carrier (e.g., an electronic device) can be increased. Specifically, in some examples, SDmax/EPD may take on a value of 1.02, 1.035, 1.012, 0.98, 1.04, or other value less than 1.05.

In some embodiments, the optical imaging lens group 10 satisfies the following conditional expression: 0.7< (f1+ f5)/f2< 1.2; wherein f1 is the focal length of the first lens L1, f2 is the focal length of the second lens L2, and f5 is the focal length of the fifth lens L5.

When the above conditional expressions are satisfied, the second lens element L2 provides most of the positive refractive power, and the first lens element L1 and the fifth lens element L5 share part of the positive refractive power, so as to reasonably distribute the focal power of the optical image capturing lens assembly 10, reduce the sensitivity thereof, and facilitate increasing the yield of products. Specifically, in some examples, (f1+ f5)/f2 can take on a value of 0.964, 1.151, 0.938, 0.772, 0.889, or other values greater than 0.7 and less than 1.2.

In some embodiments, the optical imaging lens assembly 10 satisfies the following conditional expression: -1.2< f34/f < -0.8; where f34 is the combined focal length of the third lens element L3 and the fourth lens element L4, and f is the focal length of the optical imaging lens assembly 10.

When the above conditional expressions are satisfied, the third lens element L3 and the fourth lens element L4 provide negative refractive power for the optical imaging lens assembly 10, so as to reasonably allocate focal power, correct spherical aberration of the optical imaging lens assembly 10, and balance the respective aberrations. Specifically, in some examples, f34/f can take on values of-0.877, -1.071, -0.826, -0.958, -0.932, or other values greater than-1.2 and less than-0.8.

In some embodiments, the optical imaging lens group 10 satisfies the following conditional expression: TTL/Imgh is less than or equal to 1.45; wherein TTL is an axial distance from the object-side surface S1 of the first lens element L1 to the image plane S15, and Imgh is a maximum image height of the optical imaging lens assembly 10.

When the above conditional expressions are satisfied, the optical imaging lens assembly 10 can satisfy both high-pixel and small-sized requirements. Specifically, in some examples, TTL/Imgh can take on a value of 1.425, 1.443, 1.428, 1.448, 1.45, or other values less than 1.45.

In some embodiments, the optical imaging lens assembly 10 satisfies the following conditional expression: TTL/Imgh is less than or equal to 1.35.

When the above conditional expressions are satisfied, the optical imaging lens assembly 10 can satisfy both high-pixel and small-sized requirements. Specifically, in some examples, TTL/Imgh can be 1.315, 1.243, 1.128, 1.248, 1.35, or other values less than 1.35.

In some embodiments, the optical imaging lens group 10 satisfies the following conditional expression: the | < SAG51| < 0.30, | < SAG52| < 0.76; here, SAG51 is the horizontal distance between the maximum effective diameter of the object-side surface S9 of the fifth lens L5 and the optical axis of the object-side surface S9 of the fifth lens L5, and SAG52 is the horizontal distance between the maximum effective diameter of the image-side surface S10 of the fifth lens L5 and the optical axis of the image-side surface S10 of the fifth lens L5.

When the conditional expressions are satisfied, the processing difficulty of the fifth lens L5 can be reduced, and the yield can be improved. Specifically, in some examples, | SAG51| can take on values of 0.209, 0.208, 0.297, 0.278, 0.30, or other values less than 0.30, | SAG52| can take on values of 0.422, 0.759, 0.482, 0.586, 0.76, or other values less than 0.76.

In some embodiments, the optical imaging lens group 10 satisfies the following conditional expression: the | SAG51| is less than or equal to 0.20, and the | SAG52| is less than or equal to 0.40.

When the conditional expressions are satisfied, the processing difficulty of the fifth lens L5 can be reduced, and the yield can be improved. Specifically, in some examples, | SAG51| can take on values of 0.154, 0.148, 0.139, 0.116, 0.20, or other values less than 0.20, | SAG52| can take on values of 0.318, 0.367, 0.354, 0.387, 0.40, or other values less than 0.40.

In some embodiments, the optical imaging lens assembly 10 satisfies the following conditional expression: (CT1+ CT2+ CT3)/TTL < 0.3; wherein CT1 is the central thickness of the first lens element L1, CT2 is the central thickness of the second lens element L2, CT3 is the central thickness of the third lens element L3, and TTL is the distance from the object-side surface S1 of the first lens element L1 to the image plane S15.

When the above conditional expressions are satisfied, the arrangement of the thicknesses of the first lens element L1, the second lens element L2 and the third lens element L3 is advantageous for reducing the sensitivity of the optical imaging lens assembly 10 while keeping the miniaturization thereof. Specifically, in some examples, (CT1+ CT2+ CT3)/TTL can be 0.234, 0.244, 0.233, 0.257, 0.225, or other values less than 0.3.

In some embodiments, the optical imaging lens group 10 satisfies the following conditional expression: r10/f > 0.4; where R10 is the radius of curvature of the object-side surface S9 of the fifth lens element L1, and f is the focal length of the optical imaging lens assembly 10.

When the above conditional expressions are satisfied, the generation of aberration can be avoided, and the high-order aberration generated by the fifth lens element L5 can be further corrected, so as to improve the imaging quality of the optical imaging lens assembly 10. Specifically, in some examples, R10/f may take on a value of 0.464, 0.495, 0.487, 0.491, 0.444, or other value greater than 0.4.

In some embodiments, the optical imaging lens group 10 satisfies the following conditional expression: -1< R8/R9< 0; r8 is a radius of curvature of the object-side surface S7 of the fourth lens L4, and R9 is a radius of curvature of the image-side surface S8 of the fourth lens L4.

When the above conditional expressions are satisfied, by adjusting the curvature radius of the fourth lens element L4, the spherical aberration and astigmatism can be effectively corrected, and the imaging quality of the optical image capturing lens assembly 10 is improved. Specifically, in some examples, R8/R9 can take on a value of-0.920, -0.968, -0.891, -0.679, -0.364, or other values greater than-1 and less than 0.

In some embodiments, the optical imaging lens assembly 10 further includes an optical filter. The filter is disposed on the image side of the sixth lens L6. In the embodiment of the invention, the optical filter is an infrared filter L7, and the infrared filter L7 includes an object side S13 and an image side S14. The filter L7 is disposed on the image side of the sixth lens L6. When the optical image capturing lens assembly 10 is used for imaging, light rays emitted or reflected by a subject enter the optical image capturing lens assembly 10 from the object side direction, sequentially pass through the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6 and the filter L7, and finally converge on the imaging surface S15.

In some embodiments, the optical imaging lens assembly 10 further includes a stop STO. The stop STO may be an aperture stop or a field stop. The stop STO may be provided on the surface of any one of the lenses, or before the first lens L1, or between any two of the lenses, or between the sixth lens L6 and the filter L7. For example, in embodiment one to embodiment five, as shown in fig. 1, 5, 9, 13, and 17, the stop STO is disposed before the first lens L1.

The surface shape of the aspheric surface is determined by the following formula:

where h is the height from any point on the aspheric surface to the optical axis, c is the vertex curvature, k is the conic constant, and Ai is the correction coefficient of the i-th order of the aspheric surface.

The present invention will be described in detail by the following specific embodiments with reference to the attached drawings.

The first embodiment is as follows:

referring to fig. 1 to 4, the optical imaging lens assembly 10 of the present embodiment includes, from an object side to an image side, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4, a fifth lens element L5, a sixth lens element L6 and an infrared filter L7.

The first lens element L1 with positive refractive power is made of plastic, and has a convex object-side surface S1 along an optical axis, a concave surface along a circumference, and a convex image-side surface S2. The second lens element L2 with positive refractive power is made of plastic, and has a concave object-side surface S3 at the optical axis and a convex object-side surface at the circumference, and an aspheric image-side surface S4 at the optical axis and a concave image-side surface at the circumference. The third lens element L3 with negative refractive power is made of plastic, and has an object-side surface S5 being convex at the optical axis, concave at the circumference, and a concave image-side surface S6. The fourth lens element L4 with negative refractive power is made of plastic and has a concave object-side surface S7 and a concave image-side surface S8. The fifth lens element L5 with positive refractive power is made of plastic, and has an object-side surface S9 being convex along an optical axis and concave along a circumference, and an image-side surface S10 being convex along the optical axis and convex along the circumference. The sixth lens element L6 with negative refractive power is made of plastic, and has an object-side surface S11 being convex along an optical axis and convex along a circumference, and an image-side surface S12 being concave along the optical axis and convex along the circumference.

The stop STO is disposed between the subject and the first lens L1. The f-number FNO of the optical imaging lens group 10 is 1.58.

The infrared filter L7 is made of glass, and is disposed between the sixth lens element L6 and the image plane S15 without affecting the focal length of the optical lens assembly 10.

In the first embodiment, the effective focal length f of the optical lens assembly 10 is 4.68mm, the f-number of the optical lens assembly 10 is FNO 1.55, and the field of view of the optical lens assembly 10 is FOV 80.48 degrees. The distance TTL between the object-side surface S1 of the first lens element L1 and the image plane S15 on the optical axis is 5.70 mm. The optical imaging lens group 10 satisfies the following conditions: sdma/EPD is 1.02, (f1+ f5)/f2 is 0.964, f34/f is-0.877, TTL/Imgh is 1.425, | SAG51 is 0.209mm, | SAG52 is 0.318mm, (CT1+ CT2+ CT3)/TTL is 0.234, R10/f is 0.464, R8/R9 is-0.920. The optical imaging lens group 10 also satisfies the conditions of the following table:

TABLE 1

TABLE 2

The second embodiment:

referring to fig. 5 to 8, the optical imaging lens assembly 10 of the present embodiment includes, from an object side to an image side, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4, a fifth lens element L5, a sixth lens element L6 and an infrared filter L7.

The first lens element L1 with positive refractive power is made of plastic, and has a convex object-side surface S1 along an optical axis, a concave surface along a circumference, and a convex image-side surface S2. The second lens element L2 with positive refractive power is made of plastic, and has a concave object-side surface S3, a convex image-side surface S4 along the optical axis and a concave surface along the circumference. The third lens element L3 with negative refractive power is made of plastic, and has a convex object-side surface S5 along the optical axis, a concave object-side surface S5 along the circumference, and a concave image-side surface S6. The fourth lens element L4 with negative refractive power is made of plastic and has a concave object-side surface S7 and a concave image-side surface S8. The fifth lens element L5 with positive refractive power is made of plastic, and has an object-side surface S9 being convex along an optical axis and concave along a circumference, and an image-side surface S10 being concave along the optical axis and convex along the circumference. The sixth lens element L6 with negative refractive power is made of plastic, and has an object-side surface S11 being convex along an optical axis and being convex along a circumference, and an image-side surface S12 being concave along the optical axis and being convex along the circumference.

The infrared filter L7 is made of glass, and is disposed between the sixth lens element L6 and the image plane S15 without affecting the focal length of the optical image capturing lens assembly 10. The optical imaging lens group 10 also satisfies the conditions of the following table:

TABLE 3

TABLE 4

The following data are obtained from tables 3 and 4:

f(mm)	4.09	TTL/Imgh	1.35
				FNO	1.58	\|SAG51\|(mm)	0.154
FOV (degree)	86.93	\|SAG52\|(mm)	0.363
				TTL(mm)	5.40	(CT1+CT2+CT3)/TTL	0.244
SDmax/EPD	1.321	R10/f	0.495
				(f1+f5)/f2	1.151	R8/R9	-0.968
f34/f	-1.071

Example three:

referring to fig. 9 to 12, the optical imaging lens assembly 10 of the present embodiment includes, from an object side to an image side, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4, a fifth lens element L5, a sixth lens element L6 and an infrared filter L7.

The first lens element L1 with positive refractive power is made of plastic, and has a convex object-side surface S1 along an optical axis, a concave surface along a circumference, and a convex image-side surface S2. The second lens element L2 with positive refractive power is made of plastic, and has a concave object-side surface S3, a convex image-side surface S4 along the optical axis and a concave surface along the circumference. The third lens element L3 with negative refractive power is made of plastic, and has an object-side surface S5 being convex at the optical axis, concave at the circumference, and a concave image-side surface S6. The fourth lens element L4 with negative refractive power is made of plastic and has a concave object-side surface S7 and a concave image-side surface S8. The fifth lens element L5 with positive refractive power is made of plastic, and has an object-side surface S9 being convex along an optical axis, a circumference thereof being concave, and an image-side surface S10 being convex along the optical axis, and being convex along the circumference thereof. The sixth lens element L6 with negative refractive power is made of plastic, and has an object-side surface S11 being convex along an optical axis and convex along a circumference, and an image-side surface S12 being concave along the optical axis and convex along the circumference.

The stop STO is disposed between the subject and the first lens L1. The f-number FNO of the optical imaging lens group 10 is 1.55.

TABLE 5

TABLE 6

The following data can be obtained from tables 5 and 6:

f(mm)	4.69	TTL/Imgh	1.443
				FNO	1.55	\|SAG51\|(mm)	0.208
FOV (degree)	80.30	\|SAG52\|(mm)	0.422
				TTL(mm)	5.77	(CT1+CT2+CT3)/TTL	0.233
SDmax/EPD	1.02	R10/f	0.464
				(f1+f5)/f2	0.938	R8/R9	-0.891
f34/f	-0.826

Example four:

referring to fig. 13 to 16, the optical imaging lens assembly 10 of the present embodiment includes, from an object side to an image side, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4, a fifth lens element L5, a sixth lens element L6 and an infrared filter L7.

The first lens element L1 with positive refractive power is made of plastic, and has a convex object-side surface S1 along an optical axis, a concave surface along a circumference, and a convex image-side surface S2. The second lens element L2 with positive refractive power is made of plastic, and has a concave object-side surface S3 and a convex image-side surface S4. The third lens element L3 with negative refractive power is made of plastic, and has a convex object-side surface S5 along the optical axis, a concave object-side surface S5 along the circumference, and a concave image-side surface S6. The fourth lens element L4 with negative refractive power is made of plastic and has a concave object-side surface S7 and a concave image-side surface S8. The fifth lens element L5 with positive refractive power is made of plastic, and has an object-side surface S9 being convex along an optical axis, a circumference thereof being concave, and an image-side surface S10 being convex along the optical axis, and being convex along the circumference thereof. The sixth lens element L6 with negative refractive power is made of plastic, and has a convex object-side surface S11, a concave image-side surface S12 along the optical axis and a convex surface along the circumference.

The stop STO is disposed between the subject and the first lens L1. The f-number FNO of the optical imaging lens group 10 is 1.40.

TABLE 7

TABLE 8

The following data can be obtained from tables 7 and 8:

f(mm)	4.31	TTL/Imgh	1.428
				FNO	1.40	\|SAG51\|(mm)	0.297
FOV (degree)	85.06	\|SAG52\|(mm)	0.759
				TTL(mm)	5.71	(CT1+CT2+CT3)/TTL	0.257
SDmax/EPD	1.062	R10/f	0.487
				(f1+f5)/f2	0.772	R8/R9	-0.679
f34/f	-0.958

Example five:

referring to fig. 17 to 20, the optical imaging lens assembly 10 of the present embodiment includes, from an object side to an image side, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4, a fifth lens element L5, a sixth lens element L6 and an infrared filter L7.

The first lens element L1 with positive refractive power is made of plastic, and has an object-side surface S1 being convex along an optical axis, a concave surface along a circumference, and a convex image-side surface S2. The second lens element L2 with positive refractive power is made of plastic, and has a concave object-side surface S3 at the optical axis, a convex surface at the circumference, and a convex image-side surface S4. The third lens element L3 with negative refractive power is made of plastic, and has a convex object-side surface S5 along the optical axis, a concave object-side surface S5 along the circumference, and a concave image-side surface S6. The fourth lens element L4 with negative refractive power is made of plastic and has a concave object-side surface S7 and a concave image-side surface S8. The fifth lens element L5 with positive refractive power is made of plastic, and has an object-side surface S9 being convex along an optical axis and concave along a circumference, and an image-side surface S10 being concave along the optical axis and convex along the circumference. The sixth lens element L6 with negative refractive power is made of plastic, and has an object-side surface S11 being convex along an optical axis and convex along a circumference, and an image-side surface S12 being concave along the optical axis and convex along the circumference.

The stop STO is disposed between the subject and the first lens L1. The f-number FNO of the optical imaging lens group 10 is 1.72.

TABLE 9

TABLE 10

From tables 9 and 10, the following data can be obtained:

f(mm)	4.71	TTL/Imgh	1.448
				FNO	1.72	\|SAG51\|(mm)	0.278
FOV (degree)	80.00	\|SAG52\|(mm)	0.482
				TTL(mm)	5.79	(CT1+CT2+CT3)/TTL	0.225
SDmax/EPD	1.127	R10/f	0.444
				(f1+f5)/f2	0.889	R8/R9	-0.364
f34/f	-0.932

Referring to fig. 1 and fig. 21, an image capturing module 100 according to an embodiment of the present invention includes an optical image capturing lens assembly 10 and a photosensitive element 20 according to any of the above embodiments. The light sensing element 20 is disposed on the image side of the optical imaging lens assembly 10.

In the image capturing module 100 according to the embodiment of the invention, the optical lens assembly 10 is configured reasonably by the above six lenses and satisfies the conditional expression SDmax/EPD <1.35, which is helpful for miniaturization of the optical lens assembly 10, and can provide a larger entrance pupil, enlarge the aperture, and be beneficial for improving the imaging quality, and increase the usage time and space of the carrier (e.g., the electronic device 1000 shown in fig. 22 or 23).

Specifically, the photosensitive element 20 may be a Complementary Metal Oxide Semiconductor (CMOS) image sensor or a Charge-coupled Device (CCD) image sensor.

Further, in the embodiment of fig. 21, the image capturing module 100 further includes a lens barrel 30, a lens base 40 and a circuit board 50, the photosensitive element 20 is disposed on the circuit board 50 and electrically connected to the circuit board 50, the lens base 40 is disposed on the circuit board 50, the lens barrel 30 is connected to the lens base 40, and the optical image capturing lens assembly 10 is disposed in the lens barrel 30.

Referring to fig. 22 and 23, an electronic device 1000 according to an embodiment of the present invention includes a housing 200 and the image capturing module 100 according to the above embodiment. The image capturing module 100 is mounted on the housing 200.

In the electronic device 1000 according to the embodiment of the invention, the optical imaging lens assembly 10 is configured reasonably by the above six lenses and satisfies the conditional expression SDmax/EPD <1.35, which is helpful for miniaturization of the optical imaging lens assembly 10, and can provide a larger entrance pupil, enlarge the aperture, and be beneficial for improving the imaging quality, and increase the usage time and space of the electronic device 1000.

It is understood that the electronic device 1000 according to the embodiment of the present invention includes, but is not limited to, information terminal devices such as a smart phone, a tablet computer, a notebook computer, a digital still camera, an electronic book reader, a Portable Multimedia Player (PMP), a mobile medical device, and a smart wearable device, or electronic devices having a photographing function. In the example of fig. 22, the electronic device 1000 is a smartphone. In the example of fig. 23, the electronic device 1000 is a notebook computer. The image capturing module 100 can be disposed on the back of the electronic device 1000 or disposed on the front of the electronic device 1000.

In the description of the specification, reference to the terms "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention, which is defined by the claims and their equivalents.

Claims

1. An optical imaging lens assembly, comprising six lens elements with refractive power, in order from an object side to an image side:

a first lens element with positive refractive power having a concave object-side surface and a convex image-side surface;

a second lens element with positive refractive power having a convex object-side surface at its circumference;

a third lens element with negative refractive power having a concave object-side surface and a concave image-side surface at the periphery;

a fourth lens element with negative refractive power;

a fifth lens element with positive refractive power having a concave object-side surface at its circumference, both the object-side surface and the image-side surface being aspheric, and the object-side surface having at least one inflection point;

a sixth lens element with negative refractive power having a concave image-side surface along an optical axis, both the object-side surface and the image-side surface being aspheric, and at least one of the object-side surface and the image-side surface having at least one inflection point;

the optical image pickup lens group satisfies the following conditional expressions:

SDmax/EPD<1.35；

wherein SDmax is the maximum value of the maximum effective radius of the object side surface and the image side surface of each lens in the optical image pickup lens group, EPD is the entrance pupil diameter of the optical image pickup lens group,

-1.2<f34/f<-0.8；

wherein f34 is a combined focal length of the third lens element and the fourth lens element, and f is a focal length of the optical image capturing lens assembly.

2. The optical image capturing lens assembly of claim 1, wherein the optical image capturing lens assembly satisfies the following conditional expression:

SDmax/EPD<1.05。

3. the optical image capturing lens assembly of claim 1, wherein the optical image capturing lens assembly satisfies the following conditional expression:

0.7<(f1+f5)/f2<1.2；

wherein f1 is the focal length of the first lens, f2 is the focal length of the second lens, and f5 is the focal length of the fifth lens.

4. The optical camera lens assembly of claim 1, wherein said optical camera lens assembly satisfies the following conditional expression:

1.128≤TTL/Imgh≤1.45；

wherein, TTL is a distance on the optical axis from the object-side surface of the first lens element to the image plane, and Imgh is a maximum image height of the optical image capturing lens assembly.

5. The optical image capturing lens assembly of claim 4, wherein the optical image capturing lens assembly satisfies the following conditional expression:

1.128≤TTL/Imgh≤1.35。

6. the optical image capturing lens assembly of claim 1, wherein the optical image capturing lens assembly satisfies the following conditional expression:

0.116≤|SAG51|≤0.30；

SAG51 is the horizontal distance between the maximum effective diameter of the object side surface of the fifth lens and the optical axis of the object side surface of the fifth lens.

7. The optical camera lens assembly of claim 1, wherein said optical camera lens assembly satisfies the following conditional expression:

0.318≤|SAG52|≤0.76；

SAG52 is the horizontal distance between the maximum effective diameter of the image side surface of the fifth lens and the optical axis of the image side surface of the fifth lens.

8. The optical image capturing lens assembly of claim 1, wherein the optical image capturing lens assembly satisfies the following conditional expression:

（CT1+CT2+CT3）/TTL<0.3；

wherein CT1 is a central thickness of the first lens element, CT2 is a central thickness of the second lens element, CT3 is a central thickness of the third lens element, and TTL is a distance from an object-side surface of the first lens element to an image plane.

9. The optical camera lens assembly of claim 1, wherein said optical camera lens assembly satisfies the following conditional expression:

0.4<R10/f≤0.495；

wherein R10 is the curvature radius of the object-side surface of the fifth lens element, and f is the focal length of the optical image capturing lens assembly.

10. The optical image capturing lens assembly of claim 1, wherein the optical image capturing lens assembly satisfies the following conditional expression:

-1<R8/R9<0；

r8 is the radius of curvature of the object-side surface of the fourth lens and R9 is the radius of curvature of the image-side surface of the fourth lens.

11. An image capturing module, comprising:

the optical camera lens group of any one of claims 1 to 10; and

and the photosensitive element is arranged at the image side of the optical shooting lens group.

12. An electronic device, comprising:

a housing; and

the image capture module of claim 11, mounted to the housing.