CN111999851A

CN111999851A - Image capturing module, electronic device and automobile

Info

Publication number: CN111999851A
Application number: CN201910446805.1A
Authority: CN
Inventors: 邹海荣; 俞炳泽; 兰宾利
Original assignee: OFilm Tech Co Ltd
Current assignee: Nanchang OFilm Precision Optical Products Co Ltd; OFilm Group Co Ltd
Priority date: 2019-05-27
Filing date: 2019-05-27
Publication date: 2020-11-27

Abstract

The invention relates to an image capturing module, an electronic device and an automobile. An image capturing module sequentially comprises, from an object side to an image side: a first lens element with negative refractive power; a second lens element with positive refractive power having a convex object-side surface; a third lens element with refractive power; the fourth lens element with positive refractive power has a convex object-side surface and a convex image-side surface; the fifth lens element with negative refractive power has a concave object-side surface and a convex image-side surface. The refractive power of each lens element is reasonably matched and the surface shapes of the fourth lens element and the fifth lens element are limited, so that the image capturing module has the characteristic of large field angle.

Description

Image capturing module, electronic device and automobile

Technical Field

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

Background

Due to the limitation of the structure of the automobile body, the household automobile has a plurality of blind areas in the visual field, and the blind area of the large truck is larger. The driver cannot see the blind areas, so that traffic accidents are easily caused.

The rearview mirrors on the two sides of the vehicle body can only see narrow spaces on the two sides of the vehicle body, and can not collect all information around the vehicle body. If the driver cuts the innermost lane at a large angle by acceleration, it is easy to collide with a vehicle traveling at high speed in the innermost lane, as in the case of a main road on a side road, because the driver cannot observe the entire left-side vehicle information from the left-side rearview mirror. Although the blind areas on both sides can be reduced by adjusting the angle of the rear view mirror and adding a convex mirror, the practical effect is very small.

Disclosure of Invention

Accordingly, it is necessary to provide an image capturing module, an electronic device and an automobile to solve the problem of narrow viewing angle.

An image capturing module sequentially comprises, from an object side to an image side:

a first lens element with negative refractive power;

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

a third lens element with refractive power;

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

the fifth lens element with negative refractive power has a concave object-side surface and a convex image-side surface.

In the above structure, the first lens element provides negative refractive power to increase the field of view of the image capturing module; the second lens element provides positive refractive power to cooperate with the first lens element, so as to prevent the excessive negative refractive power at the front end of the image capturing module (the first lens element and the second lens element), thereby shortening the length of the image capturing module in the optical axis direction and realizing miniaturization; the fourth lens element provides positive refractive power to balance the refractive power configuration of the image capturing module and to suppress the angle of light incident on the image plane, and the double-convex structure of the fourth lens element can achieve a better focusing effect to shorten the length of the image capturing module in the optical axis direction.

In one embodiment, the image capturing module further includes a stop disposed between the object side of the first lens element and the fourth lens element.

In one embodiment, the image capturing module satisfies the following relationship:

-7.00＜f1/f＜0；

wherein f1 is the focal length of the first lens element, and f is the effective focal length of the image capturing module. When the relationship is satisfied, the first lens can provide negative refractive power for the image capturing module, so that the image capturing module has the characteristic of wide viewing angle.

f45/f＞1.50；

wherein f45 is a combined focal length of the fourth lens element and the fifth lens element, and f is an effective focal length of the image capturing module. When the above relationship is satisfied, it is helpful to arrange sufficient refractive power at the image side end (the fourth lens element and the fifth lens element) of the image capturing module, so as to reduce the sensitivity of the image capturing module.

1.00≤CT2/CT3＜5.00；

wherein CT2 is the thickness of the second lens element on the optical axis, and CT3 is the thickness of the third lens element on the optical axis. When the above relation is satisfied, the problem of poor molding of the second lens and the third lens can be well avoided, and the uniformity of lens molding can be improved.

ΣCT/TL＜0.70；

wherein Σ CT is a total of thicknesses of the first lens element, the second lens element, the third lens element, the fourth lens element, and the fifth lens element on an optical axis, and TL is a distance between an object-side surface of the first lens element and an image plane of the image capturing module on the optical axis. When satisfying above-mentioned relation, can rationally set up the thickness of each lens, reduce the processing degree of difficulty of each lens in order to promote the yield, shorten simultaneously get for instance the module in the size of optical axis direction to increase mechanical focal length, thereby be favorable to the focusing.

ET4≥0.47；

ET4 is a lens thickness corresponding to a radius of the fourth lens in a direction perpendicular to the optical axis of the fourth lens being 3.3mm, and ET4 is expressed in mm. When the relation is satisfied, the processing difficulty of the fourth lens can be reduced, and the yield is improved.

|R3|/|R4|≤5.00；

1.00＜|R5|/|R6|＜2.00；

wherein R3 is a radius of curvature of the object-side surface of the second lens element at the optical axis, R4 is a radius of curvature of the image-side surface of the second lens element at the optical axis, R5 is a radius of curvature of the object-side surface of the third lens element at the optical axis, and R6 is a radius of curvature of the image-side surface of the third lens element at the optical axis. When the relation is met, the curvature radiuses of the object side surface and the image side surface of the second lens and the third lens on the optical axis can be reasonably set, so that the difference of the curvature radiuses of the two surfaces of the second lens at the optical axis is close, and the difference of the curvature radiuses of the two surfaces of the third lens at the optical axis is close, and therefore the second lens and the third lens are easy to produce and process. If the curvature radius of the object side surface or the image side surface is too large, a larger focal length is generated and deviation is easy to generate; if the difference of the curvature radiuses of the two surfaces is too large, the processing difficulty is increased, and the precision stability is reduced.

0≤∣V2-V5∣＜35.00；

wherein V2 is the Abbe number of the second lens and V5 is the Abbe number of the fifth lens. The materials of the second lens and the third lens are reasonably configured to meet the relationship, so that the chromatic aberration of the image capturing module is reduced, and the imaging quality is improved.

(CT4-CT5)/(α4-α5)＜0；

wherein CT4 is the thickness of the fourth lens on the optical axis, and CT4 has the unit of mm; CT5 is the thickness of the fifth lens on the optical axis, and the unit of CT5 is mm; α 4 is a thermal expansion coefficient of the fourth lens, and α 4 has a unit of 10^-6K is; α 5 is a thermal expansion coefficient of the fifth lens, and α 5 has a unit of 10^-6K is the sum of the values of k and k. The thicknesses of the fourth lens and the fifth lens on the optical axis and the respective materials are reasonably matched to meet the relationship, so that the influence of temperature on the image capturing module is reduced, and the image capturing module still keeps good imaging quality at high temperature or low temperature. In addition, if the fourth lens and the fifth lens are cemented lenses, the thickness difference and the material characteristic difference of the two lenses on the optical axis can be reduced, and the risk of cracking of the cemented lenses is reduced.

f/EPD≤2.00；

wherein f is the effective focal length of the image capturing module, and EPD is the entrance pupil diameter of the image capturing module. When the relation is satisfied, the image capturing module can provide a larger entrance pupil, enlarge the aperture and increase the light adding quantity, so that the image capturing module still has excellent imaging quality in a dark environment.

In one embodiment, the image capturing module further includes a photosensitive chip disposed on the image side of the fifth lens element, and the image capturing module satisfies the following relationship:

TL/Imgh≤3.50；

wherein TL is a distance from an object side surface of the first lens element to an imaging surface of the image capturing module on an optical axis, and Imgh is a diagonal length of a photosensitive area in the photosensitive chip. When the relation is satisfied, the image capturing module can meet the requirement of high pixel and can also meet the miniaturization design.

tan[(1/2)FOV]/Y＞0.25；

the FOV is the angle of view of the image capturing module, the Y is half of the length of a diagonal line of a light sensing area in the photosensitive chip, and the unit of the Y is mm. When the relation is satisfied, the image capturing module can be ensured to have the characteristic of high pixel, so that a better wide-angle photographing effect can be obtained.

An electronic device includes a display module and the image capturing module described in any of the above embodiments, wherein the image capturing module is in communication with the display module, and an image obtained by the image capturing module can be displayed in the display module.

An automobile comprises an automobile body and the electronic device, wherein the display module is arranged in the automobile body, the image capturing module is arranged on the left side and/or the right side of the automobile body and is in communication connection with the display module, the image capturing module is used for collecting image information of the rear side of the automobile, and the image information obtained by the image capturing module can be displayed in the display module.

Drawings

Fig. 1 is a schematic view of an image capturing module according to a first embodiment of the present invention;

FIG. 2 is a spherical aberration diagram (mm), an astigmatism diagram (mm) and a distortion diagram (%) of the image capturing module according to the first embodiment;

fig. 3 is a schematic view of an image capturing module according to a second embodiment of the present invention;

FIG. 4 is a spherical aberration diagram (mm), an astigmatism diagram (mm) and a distortion diagram (%) of the image capturing module according to the second embodiment;

fig. 5 is a schematic view of an image capturing module according to a third embodiment of the present invention;

FIG. 6 is a spherical aberration diagram (mm), astigmatism diagram (mm) and distortion diagram (%) of the image capturing module according to the third embodiment;

fig. 7 is a schematic view of an image capturing module according to a fourth embodiment of the present invention;

FIG. 8 is a spherical aberration diagram (mm), an astigmatism diagram (mm) and a distortion diagram (%) of the image capturing module according to the fourth embodiment;

fig. 9 is a schematic view of an image capturing module according to a fifth embodiment of the present invention;

FIG. 10 is a spherical aberration diagram (mm), an astigmatism diagram (mm) and a distortion diagram (%);

fig. 11 is a schematic view of an image capturing module according to a sixth embodiment of the present invention;

FIG. 12 is a spherical aberration diagram (mm), an astigmatism diagram (mm) and a distortion diagram (%);

fig. 13 is a schematic view of an image capturing module according to a seventh embodiment of the present invention;

FIG. 14 is a spherical aberration diagram (mm), an astigmatism diagram (mm) and a distortion diagram (%);

fig. 15 is a schematic view of an image capturing module according to an eighth embodiment of the present invention;

fig. 16 is a spherical aberration diagram (mm), an astigmatism diagram (mm) and a distortion diagram (%);

fig. 17 is a schematic view of an image capturing module according to a ninth embodiment of the invention;

fig. 18 is a spherical aberration diagram (mm), an astigmatism diagram (mm) and a distortion diagram (%);

fig. 19 is a schematic view of an image capturing module according to another embodiment of the present invention;

FIG. 20 is a diagram illustrating an electronic device according to an embodiment of the invention;

fig. 21 is a schematic view of an automobile using an electronic device according to an embodiment of the invention.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, the image capturing module 100 in the embodiment of the present application sequentially includes, from an object side to an image side, a first lens element L1 with negative refractive power, a second lens element L2 with positive refractive power, a third lens element L3 with positive refractive power, a fourth lens element L4 with positive refractive power, and a fifth lens element L5 with negative refractive power.

The first lens L1 includes an object side surface S1 and an image side surface S2, the second lens L2 includes an object side surface S3 and an image side surface S4, the third lens L3 includes an object side surface S5 and an image side surface S6, the fourth lens L4 includes an object side surface S7 and an image side surface S8, and the fifth lens L5 includes an object side surface S9 and an image side surface S10. In addition, the image side of the fifth lens L5 has an imaging surface S15, and the imaging surface S15 may be a photosensitive surface of a photosensitive chip.

The object-side surface S3 of the second lens element L2 is convex. The object-side surface S7 and the image-side surface S8 of the fourth lens L4 are convex. The object-side surface S9 of the fifth lens element L5 is concave, and the image-side surface S10 is convex.

The aspherical surface type formulas of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, and the fifth lens L5 are as follows:

wherein Z is a distance from a corresponding point on the aspherical surface to a plane tangent to the surface vertex, r is a distance from a corresponding point on the aspherical surface to the optical axis, c is a curvature of the aspherical surface vertex, k is a conic constant, and Ai is a coefficient corresponding to the i-th high-order term in the aspherical surface type formula.

In some embodiments, the image capturing module 100 further includes a diaphragm ST 0. The stop ST0 may be disposed between the object side of the first lens L1 and the fourth lens L4. Specifically, in some embodiments, the stop ST0 may be disposed between the second lens L2 and the third lens L3 or between the third lens L3 and the fourth lens L4.

In some embodiments, the first lens element L1, the second lens element L2, the third lens element L3, the fourth lens element L4 and the fifth lens element L5 are all made of plastic, and the plastic lens element can reduce the weight of the image capturing module 100 and reduce the manufacturing cost. In some embodiments, the first lens element L1, the second lens element L2, the third lens element L3, the fourth lens element L4 and the fifth lens element L5 are made of glass, and the image capturing module 100 can endure high temperature and has good optical performance. In other embodiments, only the first lens element L1 may be made of glass, and the other lens elements may be made of plastic, in which case, the first lens element L1 closest to the object side can better withstand the influence of the ambient temperature on the object side, and the production cost of the image capturing module 100 is kept low because the other lens elements are made of plastic. Alternatively, in some embodiments, the material of the first lens L1 is glass, and the materials of the other lenses can be combined arbitrarily.

In some embodiments, the image capturing module 100 is disposed on the image side of the fifth lens element L5 and is provided with an ir filter L6 made of glass material and an ir filter L6. The infrared filter L6 includes an object side S11 and an image side S12. The infrared filter L6 is used for filtering the light of the image, and specifically for isolating the infrared light, and preventing the infrared light from reaching the image plane S15, thereby preventing the infrared light from affecting the color and the definition of the normal image, and further improving the imaging quality of the image capturing module 100.

In some embodiments, the image capturing module 100 further includes a protective glass L7. Cover glass L7 includes object side S13 and image side S14. The protective glass L7 is disposed on the image side of the infrared filter L6 to be close to the photo sensor chip when the module is assembled, so as to protect the photo sensor chip.

In some embodiments, the image capturing module 100 satisfies the following relationship:

-7.00＜f1/f＜0；

wherein f1 is the focal length of the first lens element L1, and f is the effective focal length of the image capturing module 100. In some of these embodiments, f1/f can be-1.45, -1.35, -1.30, -1.25, -1.20, -1.15, -1.10, and-1.05. When the above relationship is satisfied, the first lens element L1 can provide negative refractive power for the image capturing module 100, so that the image capturing module 100 has a wide viewing angle.

f45/f＞1.50；

wherein f45 is a combined focal length of the fourth lens element L4 and the fifth lens element L5, and f is an effective focal length of the image capturing module 100. In some of these embodiments, f45/f may be 1.70, 1.80, 1.90, 2.00, 2.10, 2.20, 2.30, 2.40, and 2.50. When the above relationship is satisfied, it is helpful to arrange sufficient refractive power at the image side end (at the positions of the fourth lens element L4 and the fifth lens element L5) of the image capturing module 100, so as to reduce the sensitivity of the image capturing module 100.

1.00≤CT2/CT3＜5.00；

wherein CT2 is the thickness of the second lens element L2 on the optical axis, and CT3 is the thickness of the third lens element L3 on the optical axis. In some of these embodiments, CT2/CT3 can be 1.10, 1.50, 2.00, 2.50, 3.00, 3.50, and 4.00. When the above relationship is satisfied, the problem of poor molding of the second lens L2 and the third lens L3 can be avoided, and the uniformity of lens molding can be increased.

ΣCT/TL＜0.70；

wherein Σ CT is a total of thicknesses of the first lens element L1, the second lens element L2, the third lens element L3, the fourth lens element L4, and the fifth lens element L5 on the optical axis, and TL is a distance from the object-side surface S1 of the first lens element L1 to the image plane S15 of the image capturing module 100 on the optical axis. In some of these embodiments, Σ CT/TL may be 0.42, 0.45, 0.50, 0.55, or 0.62. When satisfying above-mentioned relation, can rationally set up the thickness of each lens, reduce the processing degree of difficulty of each lens in order to promote the yield, shorten simultaneously and get for instance module 100 in the size of optical axis direction to increase mechanical focal length, thereby be favorable to the focusing.

ET4≥0.47mm；

ET4 is the lens thickness corresponding to the position where the radius of the fourth lens L4 in the direction perpendicular to the optical axis is 3.3mm, and ET4 is in mm. In some of these embodiments, ET4 may take on a value of 0.50mm, 0.55mm, 0.60mm, 0.80mm, 0.90mm, 1.00mm, 1.20mm, 1.40mm, or 1.50 mm. When the above relationship is satisfied, the processing difficulty of the fourth lens L4 can be reduced, and the yield can be improved.

|R3|/|R4|≤5.00；

1.00＜|R5|/|R6|＜2.00；

wherein R3 is a radius of curvature of the object-side surface S3 of the second lens element L2 along the optical axis, R4 is a radius of curvature of the image-side surface S4 of the second lens element L2 along the optical axis, R5 is a radius of curvature of the object-side surface S5 of the third lens element L3 along the optical axis, and R6 is a radius of curvature of the image-side surface S6 of the third lens element L3 along the optical axis. In some of these embodiments, the relationship of R3/| R4| can be 0.15, 0.20, 1.00, 2.50, 3.50, 4.50, 4.90, or 4.95; the relationship of R5/R6 may be 1.30, 1.50, 1.60, 1.70, 1.80, or 1.90. When the above relationship is satisfied, the curvature radii of the object side and the image side of the second lens L2 and the third lens L3 on the optical axis can be reasonably set, so that the difference between the curvature radii of the two faces of the second lens L2 on the optical axis is similar, and the difference between the curvature radii of the two faces of the third lens L3 on the optical axis is similar, so that the second lens L2 and the third lens L3 are easy to produce and process. If the curvature radius of the object side surface or the image side surface is too large, a larger focal length is generated and deviation is easy to generate; if the difference of the curvature radiuses of the two surfaces is too large, the processing difficulty is increased, and the precision stability is reduced.

0≤∣V2-V5∣＜35.00；

where V2 is the abbe number of the second lens L2, and V5 is the abbe number of the fifth lens L5. In some embodiments, the relationship | V2-V5 | may be 1.00, 2.00, 2.50, 10.00, 11.00, 28.00, or 28.50. The materials of the second lens L2 and the third lens L3 are reasonably configured to satisfy the above relationship, so that the chromatic aberration of the image capturing module 100 is reduced, and the imaging quality is improved.

(CT4-CT5)/(α4-α5)＜0；

wherein, CT4 is the thickness of the fourth lens L4 on the optical axis, and the unit of CT4 is mm; CT5 is the thickness of the fifth lens L5 on the optical axis, and CT5 has units of mm; α 4 is a thermal expansion coefficient of the fourth lens L4, and α 4 has a unit of 10^-6K is; α 5 is a thermal expansion coefficient of the fifth lens L5, and α 5 has a unit of 10^-6K is the sum of the values of k and k. In some of these embodiments, the relationship of (CT4-CT5)/(α 4- α 5) can be-8.00, -6.00, -4.00, or-3.00. The thicknesses of the fourth lens element L4 and the fifth lens element L5 on the optical axis and the respective materials are reasonably matched to satisfy the above relationship, so as to reduce the influence of the temperature on the image capturing module 100, and keep the image capturing module 100 still with good imaging quality at high temperature or low temperature. In addition, if the fourth lens element L4 and the fifth lens element L5 are cemented lenses, the difference in thickness and material properties between the two lens elements on the optical axis can be reduced, and the risk of cracking of the cemented lenses can be reduced.

f/EPD≤2.00；

wherein f is the effective focal length of the image capturing module 100, and EPD is the entrance pupil diameter of the image capturing module 100. In some of these embodiments, the f/EPD relationship may be 1.83, 1.85, 1.90, 1.93, or 1.95. When the above relationship is satisfied, the image capturing module 100 can provide a larger entrance pupil, enlarge the aperture, and increase the amount of light, so that the image capturing module 100 still has excellent imaging quality in a dark environment.

In some embodiments, the image capturing module 100 further includes a photosensitive chip disposed on the image side of the fifth lens element L5, and the image capturing module 100 satisfies the following relationship:

TL/Imgh≤3.50；

wherein TL is the distance from the object-side surface S1 of the first lens element L1 to the image plane S15 of the image capturing module 100 on the optical axis, and Imgh is the length of the diagonal line of the photosensitive area in the photosensitive chip. In some of these embodiments, the TL/Imgh relationship may be 3.20, 3.25, 3.30, 3.35, 3.40, or 3.45. When the relation is satisfied, the image capturing module can meet the requirement of high pixel and can also meet the miniaturization design.

tan[(1/2)FOV]/Y＞0.25；

wherein, FOV is the angle of view of the image capturing module 100, Y is half of the length of the diagonal line of the photosensitive area in the photosensitive chip, and the unit of Y is mm. In some of these embodiments, the tan [ (1/2) FOV ]/Y relationship may be 0.30, 0.32, 0.37, 0.38, or 0.39. When the above relation is satisfied, the image capturing module can be ensured to have the characteristic of high pixel, so as to obtain better wide-angle photographing effect.

First embodiment

In the first embodiment shown in fig. 1, the image capturing module 100 includes, in order from an object side to an image side, a first lens element L1 with negative refractive power, a second lens element L2 with positive refractive power, a third lens element L3 with negative refractive power, an aperture stop ST0, a fourth lens element L4 with positive refractive power, a fifth lens element L5 with negative refractive power, an infrared filter L6, and a protective glass L7. Fig. 2 is a spherical aberration diagram (mm), an astigmatism diagram (mm) and a distortion diagram (%) of the image capturing module 100 according to the first embodiment, wherein the astigmatism diagram and the distortion diagram are data diagrams at a reference wavelength. The reference wavelength in this and the following examples was 587.6 nm.

The object-side surface S1 of the first lens element L1 is convex along the optical axis, and the image-side surface S2 of the first lens element L1 is concave along the optical axis; the object-side surface S1 of the first lens element L1 is convex at the circumference, and the image-side surface S2 of the first lens element L1 is concave at the circumference. The object-side surface S3 of the second lens element L2 is convex along the optical axis, and the image-side surface S4 of the second lens element L2 is convex along the optical axis; the object-side surface S3 of the second lens element L2 is convex at the circumference, and the image-side surface S4 of the second lens element L2 is convex at the circumference. The object-side surface S5 of the third lens element L3 is convex along the optical axis, and the image-side surface S6 of the third lens element L3 is concave along the optical axis; the object-side surface S5 of the third lens element L3 is convex at the circumference, and the image-side surface S6 of the third lens element L3 is concave at the circumference. The object-side surface S7 of the fourth lens element L4 is convex along the optical axis, and the image-side surface S8 of the fourth lens element L4 is convex along the optical axis; the object-side surface S7 of the fourth lens element L4 is convex at the circumference, and the image-side surface S8 of the fourth lens element L4 is convex at the circumference. The object-side surface S9 of the fifth lens element L5 is concave along the optical axis, and the image-side surface S10 of the fifth lens element L5 is convex along the optical axis; the object-side surface S9 of the fifth lens element L5 is concave at the circumference, and the image-side surface S10 of the fifth lens element L5 is convex at the circumference.

The object-side and image-side surfaces of the first lens element L1, the second lens element L2, and the fifth lens element L5 are all spherical, and the object-side and image-side surfaces of the third lens element L3 and the fourth lens element L4 are all aspherical.

The first lens L1, the second lens L2, the fourth lens L4, the fifth lens L5, the infrared filter L6, and the protective glass L7 are all made of glass, and the third lens L3 is made of plastic.

Specifically, the image capturing module 100 satisfies the following relationship:

f1/f＝-1.06；

wherein f1 is the focal length of the first lens element L1, and f is the effective focal length of the image capturing module 100. When the above relationship is satisfied, the first lens element L1 can provide negative refractive power for the image capturing module 100, so that the image capturing module 100 has a wide viewing angle.

The image capturing module 100 satisfies the following relationships:

f45/f＝2.07；

wherein f45 is a combined focal length of the fourth lens element L4 and the fifth lens element L5, and f is an effective focal length of the image capturing module 100. When the above relationship is satisfied, it is helpful to arrange sufficient refractive power at the image side end (at the positions of the fourth lens element L4 and the fifth lens element L5) of the image capturing module 100, so as to reduce the sensitivity of the image capturing module 100.

The image capturing module 100 satisfies the following relationships:

CT2/CT3＝4.05；

wherein CT2 is the thickness of the second lens element L2 on the optical axis, and CT3 is the thickness of the third lens element L3 on the optical axis. When the above relationship is satisfied, the problem of poor molding of the second lens L2 and the third lens L3 can be avoided, and the uniformity of lens molding can be increased.

The image capturing module 100 satisfies the following relationships:

ΣCT/TL＝0.40；

wherein Σ CT is a total of thicknesses of the first lens element L1, the second lens element L2, the third lens element L3, the fourth lens element L4, and the fifth lens element L5 on the optical axis, and TL is a distance from the object-side surface S1 of the first lens element L1 to the image plane S15 of the image capturing module 100 on the optical axis. When satisfying above-mentioned relation, can rationally set up the thickness of each lens, reduce the processing degree of difficulty of each lens in order to promote the yield, shorten simultaneously and get for instance module 100 in the size of optical axis direction to increase mechanical focal length, thereby be favorable to the focusing.

The image capturing module 100 satisfies the following relationships:

ET4＝0.47mm；

ET4 is the lens thickness corresponding to the position where the radius of the fourth lens L4 in the direction perpendicular to the optical axis is 3.3mm, and ET4 is in mm. When the above relationship is satisfied, the processing difficulty of the fourth lens L4 can be reduced, and the yield can be improved.

The image capturing module 100 satisfies the following relationships:

|R3|/|R4|＝1.00；

|R5|/|R6|＝1.42；

wherein R3 is a radius of curvature of the object-side surface S3 of the second lens element L2 along the optical axis, R4 is a radius of curvature of the image-side surface S4 of the second lens element L2 along the optical axis, R5 is a radius of curvature of the object-side surface S5 of the third lens element L3 along the optical axis, and R6 is a radius of curvature of the image-side surface S6 of the third lens element L3 along the optical axis. When the above relationship is satisfied, the curvature radii of the object side and the image side of the second lens L2 and the third lens L3 on the optical axis can be reasonably set, so that the difference between the curvature radii of the two faces of the second lens L2 on the optical axis is similar, and the difference between the curvature radii of the two faces of the third lens L3 on the optical axis is similar, so that the second lens L2 and the third lens L3 are easy to produce and process.

The image capturing module 100 satisfies the following relationships:

∣V2-V5∣＝28.70；

where V2 is the abbe number of the second lens L2, and V5 is the abbe number of the fifth lens L5. The materials of the second lens L2 and the third lens L3 are reasonably configured to satisfy the above relationship, so that the chromatic aberration of the image capturing module 100 is reduced, and the imaging quality is improved.

The image capturing module 100 satisfies the following relationships:

(CT4-CT5)/(α4-α5)＝-8.35；

wherein, CT4 is the thickness of the fourth lens L4 on the optical axis, and the unit of CT4 is mm; CT5 is the thickness of the fifth lens L5 on the optical axis, and CT5 has units of mm; α 4 is a thermal expansion coefficient of the fourth lens L4, and α 4 has a unit of 10^-6K is; α 5 is a thermal expansion coefficient of the fifth lens L5, and α 5 has a unit of 10^-6K is the sum of the values of k and k. The thicknesses of the fourth lens element L4 and the fifth lens element L5 on the optical axis and the respective materials are reasonably matched to satisfy the above relationship, so as to reduce the influence of the temperature on the image capturing module 100, and keep the image capturing module 100 still with good imaging quality at high temperature or low temperature.

The image capturing module 100 satisfies the following relationships:

f/EPD＝1.80；

wherein f is the effective focal length of the image capturing module 100, and EPD is the entrance pupil diameter of the image capturing module 100. When the above relationship is satisfied, the image capturing module 100 can provide a larger entrance pupil, enlarge the aperture, and increase the amount of light, so that the image capturing module 100 still has excellent imaging quality in a dark environment.

When the image side of the fifth lens element L5 is disposed with a photo sensor, the image capturing module 100 satisfies the following relationship:

TL/Imgh＝3.42；

wherein TL is the distance from the object-side surface S1 of the first lens element L1 to the image plane S15 of the image capturing module 100 on the optical axis, and Imgh is the length of the diagonal line of the photosensitive area in the photosensitive chip. When the relation is satisfied, the image capturing module can meet the requirement of high pixel and can also meet the miniaturization design.

tan[(1/2)FOV]/Y＝0.28；

wherein, FOV is the angle of view of the image capturing module 100, Y is half of the length of the diagonal line of the photosensitive area in the photosensitive chip, and the unit of Y is mm. When the above relation is satisfied, the image capturing module can be ensured to have the characteristic of high pixel, so as to obtain better wide-angle photographing effect.

In the first embodiment, the effective focal length f of the image capturing module 100 is 4.62mm, the aperture FNO is 1.80, and the maximum field angle FOV is 80.16 degrees (deg.).

In addition, the parameters of the image capturing module 100 are shown in table 1 and table 2. The elements from the object plane to the image plane S15 were arranged in the order of the elements from top to bottom in table 1. The surface numbers 1 and 2 are the object-side surface S1 and the image-side surface S2 of the first lens L1, respectively, that is, the surface with the smaller surface number is the object-side surface and the surface with the larger surface number is the image-side surface in the same lens. The R radius in table 1 is the curvature radius of the object-side surface or the image-side surface of the corresponding surface number at the optical axis. The first value in the "thickness" parameter list of the first lens element L1 is the thickness of the lens element along the optical axis, and the second value is the distance from the image-side surface of the lens element to the object-side surface of the subsequent lens element along the optical axis. The "thickness" parameter in the face number 6 is the distance from the image-side face S6 of the third lens L3 to the stop ST 0. The numerical value of the stop ST0 in the "thickness" parameter column is the distance on the optical axis from the stop ST0 to the vertex of the object-side surface of the subsequent lens (the vertex refers to the intersection point of the lens and the optical axis), the direction from the object-side surface of the first lens to the image-side surface of the last lens is the positive direction of the optical axis by default, when the value is negative, it indicates that the stop ST0 is disposed on the right side of the vertex of the object-side surface of the lens, and when the "thickness" parameter of the stop STO is positive, the stop ST0 is on the left side of the vertex of the object-side surface. The "thickness" parameter value in the surface number 11 is the distance on the optical axis from the image-side surface S10 of the fifth lens L5 to the object-side surface S11 of the infrared filter L6. The value corresponding to the plane number 13 in the "thickness" parameter of the infrared filter L6 (filter in table 1) is the distance from the image-side surface S12 of the infrared filter L6 to the object-side surface S13 of the protective glass L7 on the optical axis. Table 2 is a table of relevant parameters of the aspherical surface of each lens in table 1, where K is a conic constant and Ai is a coefficient corresponding to the i-th high-order term in the aspherical surface type formula.

In the following examples, the refractive index and the focal length of each lens are numerical values at a reference wavelength.

TABLE 1

TABLE 2

Second embodiment

In the second embodiment shown in fig. 3, the image capturing module 100 includes, in order from an object side to an image side, a first lens element L1 with negative refractive power, a second lens element L2 with positive refractive power, a third lens element L3 with negative refractive power, an aperture stop ST0, a fourth lens element L4 with positive refractive power, a fifth lens element L5 with negative refractive power, an infrared filter L6, and a protective glass L7. Fig. 4 is a spherical aberration diagram (mm), an astigmatism diagram (mm) and a distortion diagram (%) of the image capturing module 100 according to the second embodiment, wherein the astigmatism diagram and the distortion diagram are data diagrams at a reference wavelength.

In the second embodiment, the effective focal length f of the image capturing module 100 is 4.62mm, the aperture FNO is 1.81, and the maximum field angle FOV is 80.17 degrees (deg.).

In addition, the parameters of the image capturing module 100 are shown in tables 3 and 4, and the definitions of the parameters can be derived from the first embodiment, which is not repeated herein.

TABLE 3

TABLE 4

The following data can be derived according to the provided parameter information:

third embodiment

In the third embodiment shown in fig. 5, the image capturing module 100 includes, in order from an object side to an image side, a first lens element L1 with negative refractive power, a second lens element L2 with positive refractive power, a third lens element L3 with positive refractive power, an aperture stop ST0, a fourth lens element L4 with positive refractive power, a fifth lens element L5 with negative refractive power, an infrared filter L6, and a protective glass L7. Fig. 6 is a spherical aberration diagram (mm), an astigmatism diagram (mm) and a distortion diagram (%) of the image capturing module 100 according to the third embodiment, wherein the astigmatism diagram and the distortion diagram are data diagrams at a reference wavelength.

The object-side surface S1 of the first lens element L1 is convex along the optical axis, and the image-side surface S2 of the first lens element L1 is concave along the optical axis; the object-side surface S1 of the first lens element L1 is convex at the circumference, and the image-side surface S2 of the first lens element L1 is concave at the circumference. The object-side surface S3 of the second lens element L2 is convex along the optical axis, and the image-side surface S4 of the second lens element L2 is concave along the optical axis; the object-side surface S3 of the second lens element L2 is convex at the circumference, and the image-side surface S4 of the second lens element L2 is concave at the circumference. The object-side surface S5 of the third lens element L3 is concave along the optical axis, and the image-side surface S6 of the third lens element L3 is convex along the optical axis; the object-side surface S5 of the third lens element L3 is concave at the circumference, and the image-side surface S6 of the third lens element L3 is convex at the circumference. The object-side surface S7 of the fourth lens element L4 is convex along the optical axis, and the image-side surface S8 of the fourth lens element L4 is convex along the optical axis; the object-side surface S7 of the fourth lens element L4 is convex at the circumference, and the image-side surface S8 of the fourth lens element L4 is convex at the circumference. The object-side surface S9 of the fifth lens element L5 is concave along the optical axis, and the image-side surface S10 of the fifth lens element L5 is convex along the optical axis; the object-side surface S9 of the fifth lens element L5 is concave at the circumference, and the image-side surface S10 of the fifth lens element L5 is convex at the circumference.

The object-side surface and the image-side surface of the first lens element L1 are spherical, and the object-side surface and the image-side surface of the second lens element L2, the third lens element L3, the fourth lens element L4, and the fifth lens element L5 are aspherical.

The first lens L1, the fourth lens L4, the infrared filter L6, and the cover glass L7 are all made of glass, and the second lens L2, the third lens L3, and the fifth lens L5 are made of plastic.

In the third embodiment, the effective focal length f of the image capturing module 100 is 4.55mm, the aperture FNO is 1.80, and the maximum field angle FOV is 81.21 degrees (deg.).

In addition, the parameters of the image capturing module 100 are shown in tables 5 and 6, and the definitions of the parameters can be derived from the first embodiment, which is not repeated herein.

It should be noted that, in this embodiment, the image-side surface S6 of the third lens L3 can serve as a stop, and the sum of the "thickness" parameter values corresponding to the surface numbers 6 and 7 is the distance on the optical axis between the image-side surface S6 of the third lens L3 and the object-side surface S7 of the fourth lens L4.

TABLE 5

TABLE 6

fourth embodiment

In the fourth embodiment as shown in fig. 7, the image capturing module 100 includes, in order from an object side to an image side, a first lens element L1 with negative refractive power, a second lens element L2 with positive refractive power, a stop ST0, a third lens element L3 with positive refractive power, a fourth lens element L4 with positive refractive power, a fifth lens element L5 with negative refractive power, an infrared filter L6, and a protective glass L7. Wherein, the fourth lens L4 and the fifth lens L5 form a cemented lens. Fig. 8 is a spherical aberration diagram (mm), an astigmatism diagram (mm) and a distortion diagram (%) of the image capturing module 100 according to the fourth embodiment, wherein the astigmatism diagram and the distortion diagram are data diagrams at a reference wavelength.

The object-side surface S1 of the first lens element L1 is convex along the optical axis, and the image-side surface S2 of the first lens element L1 is concave along the optical axis; the object-side surface S1 of the first lens element L1 is convex at the circumference, and the image-side surface S2 of the first lens element L1 is concave at the circumference. The object-side surface S3 of the second lens element L2 is convex along the optical axis, and the image-side surface S4 of the second lens element L2 is convex along the optical axis; the object-side surface S3 of the second lens element L2 is convex at the circumference, and the image-side surface S4 of the second lens element L2 is convex at the circumference. The object-side surface S5 of the third lens element L3 is concave along the optical axis, and the image-side surface S6 of the third lens element L3 is convex along the optical axis; the object-side surface S5 of the third lens element L3 is concave at the circumference, and the image-side surface S6 of the third lens element L3 is convex at the circumference. The object-side surface S7 of the fourth lens element L4 is convex along the optical axis, and the image-side surface S8 of the fourth lens element L4 is convex along the optical axis; the object-side surface S7 of the fourth lens element L4 is convex at the circumference, and the image-side surface S8 of the fourth lens element L4 is convex at the circumference. The object-side surface S9 of the fifth lens element L5 is concave along the optical axis, and the image-side surface S10 of the fifth lens element L5 is convex along the optical axis; the object-side surface S9 of the fifth lens element L5 is concave at the circumference, and the image-side surface S10 of the fifth lens element L5 is convex at the circumference.

The object-side surface and the image-side surface of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, and the fifth lens L5 are all spherical surfaces.

The first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the infrared filter L6, and the protective glass L7 are all made of glass.

In addition, the fourth lens L4 and the fifth lens L5 are cemented lenses, so that the difference in thickness and material characteristics of the two lenses on the optical axis can be reduced, and the risk of cracking of the cemented lenses is reduced.

In the fourth embodiment, the effective focal length f of the image capturing module 100 is 4.64mm, the aperture FNO is 1.80, and the maximum field angle FOV is 80.69 degrees (deg.).

In addition, the parameters of the image capturing module 100 are given in table 7, and the definitions of the parameters can be derived from the first embodiment, which is not described herein. Note that, however, the fourth lens L4 is cemented with the fifth lens L5, and the radius of curvature of the image-side surface S8 of the fourth lens L4 at the optical axis is the same as the radius of curvature of the object-side surface S9 of the fifth lens L5 at the optical axis, so the parameters of the image-side surface S8 of the fourth lens L4 are not shown in the table below. Meanwhile, since the object-side surface and the image-side surface of each lens are both spherical surfaces, when the curvature radius of any point on the object-side surface or the image-side surface of each lens is given, the curvature radius of each point on the surface is also determined, and therefore, in order to avoid repetition, an aspheric coefficient parameter table is not provided in the embodiment.

TABLE 7

fifth embodiment

In the fifth embodiment shown in fig. 9, the image capturing module 100 includes, in order from an object side to an image side, a first lens element L1 with negative refractive power, a second lens element L2 with positive refractive power, a stop ST0, a third lens element L3 with positive refractive power, a fourth lens element L4 with positive refractive power, a fifth lens element L5 with negative refractive power, an infrared filter L6, and a protective glass L7. Wherein, the fourth lens L4 and the fifth lens L5 form a cemented lens. Fig. 10 is a spherical aberration diagram (mm), an astigmatism diagram (mm) and a distortion diagram (%) of the image capturing module 100 according to the fifth embodiment, wherein the astigmatism diagram and the distortion diagram are data diagrams at a reference wavelength.

In the fifth embodiment, the effective focal length f of the image capturing module 100 is 4.62mm, the aperture FNO is 1.80, and the maximum field angle FOV is 80.20 degrees (deg.).

In addition, the parameters of the image capturing module 100 are given in table 8, and the definitions of the parameters can be derived from the first embodiment, which is not described herein. Note that, however, the fourth lens L4 is cemented with the fifth lens L5, and the radius of curvature of the image-side surface S8 of the fourth lens L4 at the optical axis is the same as the radius of curvature of the object-side surface S9 of the fifth lens L5 at the optical axis, so the parameters of the image-side surface S8 of the fourth lens L4 are not shown in the table below. Meanwhile, since the object-side surface and the image-side surface of each lens are both spherical surfaces, when the curvature radius of any point on the object-side surface or the image-side surface of each lens is given, the curvature radius of each point on the surface is also determined, and therefore, in order to avoid repetition, an aspheric coefficient parameter table is not provided in the embodiment.

TABLE 8

sixth embodiment

In the sixth embodiment as shown in fig. 11, the image capturing module 100 includes, in order from an object side to an image side, a first lens element L1 with negative refractive power, a second lens element L2 with positive refractive power, a stop ST0, a third lens element L3 with positive refractive power, a fourth lens element L4 with positive refractive power, a fifth lens element L5 with negative refractive power, an infrared filter L6, and a protective glass L7. Wherein, the fourth lens L4 and the fifth lens L5 form a cemented lens. Fig. 12 is a spherical aberration diagram (mm), an astigmatism diagram (mm) and a distortion diagram (%) of the image capturing module 100 according to the sixth embodiment, wherein the astigmatism diagram and the distortion diagram are data diagrams at a reference wavelength.

In the sixth embodiment, the effective focal length f of the image capturing module 100 is 4.62mm, the aperture FNO is 1.80, and the maximum field angle FOV is 81.07 degrees (deg.).

In addition, the parameters of the image capturing module 100 are given in table 9, and the definitions of the parameters can be derived from the first embodiment, which is not described herein. Note that, however, the fourth lens L4 is cemented with the fifth lens L5, and the radius of curvature of the image-side surface S8 of the fourth lens L4 at the optical axis is the same as the radius of curvature of the object-side surface S9 of the fifth lens L5 at the optical axis, so the parameters of the image-side surface S8 of the fourth lens L4 are not shown in the table below. Meanwhile, since the object-side surface and the image-side surface of each lens are both spherical surfaces, when the curvature radius of any point on the object-side surface or the image-side surface of each lens is given, the curvature radius of each point on the surface is also determined, and therefore, in order to avoid repetition, an aspheric coefficient parameter table is not provided in the embodiment.

TABLE 9

seventh embodiment

In the seventh embodiment shown in fig. 13, the image capturing module 100 includes, in order from an object side to an image side, a first lens element L1 with negative refractive power, a second lens element L2 with positive refractive power, a stop ST0, a third lens element L3 with positive refractive power, a fourth lens element L4 with positive refractive power, a fifth lens element L5 with negative refractive power, an infrared filter L6, and a protective glass L7. Wherein, the fourth lens L4 and the fifth lens L5 form a cemented lens. Fig. 14 is a spherical aberration diagram (mm), an astigmatism diagram (mm) and a distortion diagram (%) of the image capturing module 100 according to the seventh embodiment, wherein the astigmatism diagram and the distortion diagram are data diagrams at a reference wavelength.

In the seventh embodiment, the effective focal length f of the image capturing module 100 is 3.57mm, the aperture FNO is 1.80, and the maximum field angle FOV is 100.26 degrees (deg.).

In addition, the parameters of the image capturing module 100 are given in table 10, and the definitions of the parameters can be derived from the first embodiment, which is not described herein. Note that, however, the fourth lens L4 is cemented with the fifth lens L5, and the radius of curvature of the image-side surface S8 of the fourth lens L4 at the optical axis is the same as the radius of curvature of the object-side surface S9 of the fifth lens L5 at the optical axis, so the parameters of the image-side surface S8 of the fourth lens L4 are not shown in the table below. Meanwhile, since the object-side surface and the image-side surface of each lens are both spherical surfaces, when the curvature radius of any point on the object-side surface or the image-side surface of each lens is given, the curvature radius of each point on the surface is also determined, and therefore, in order to avoid repetition, an aspheric coefficient parameter table is not provided in the embodiment.

Watch 10

eighth embodiment

In the eighth embodiment shown in fig. 15, the image capturing module 100 includes, in order from an object side to an image side, a first lens element L1 with negative refractive power, a second lens element L2 with positive refractive power, a stop ST0, a third lens element L3 with positive refractive power, a fourth lens element L4 with positive refractive power, a fifth lens element L5 with negative refractive power, an infrared filter L6, and a protective glass L7. Wherein, the fourth lens L4 and the fifth lens L5 form a cemented lens. Fig. 16 is a spherical aberration diagram (mm), an astigmatism diagram (mm) and a distortion diagram (%) of the image capturing module 100 according to the eighth embodiment, wherein the astigmatism diagram and the distortion diagram are data diagrams at a reference wavelength.

In the eighth embodiment, the effective focal length f of the image capturing module 100 is 4.00mm, the aperture FNO is 1.80, and the maximum field angle FOV is 90.29 degrees (deg.).

In addition, the parameters of the image capturing module 100 are given in table 11, and the definitions of the parameters can be derived from the first embodiment, which is not described herein. Note that, however, the fourth lens L4 is cemented with the fifth lens L5, and the radius of curvature of the image-side surface S8 of the fourth lens L4 at the optical axis is the same as the radius of curvature of the object-side surface S9 of the fifth lens L5 at the optical axis, so the parameters of the image-side surface S8 of the fourth lens L4 are not shown in the table below. Meanwhile, since the object-side surface and the image-side surface of each lens are both spherical surfaces, when the curvature radius of any point on the object-side surface or the image-side surface of each lens is given, the curvature radius of each point on the surface is also determined, and therefore, in order to avoid repetition, an aspheric coefficient parameter table is not provided in the embodiment.

TABLE 11

ninth embodiment

In the ninth embodiment shown in fig. 17, the image capturing module 100 includes, in order from an object side to an image side, a first lens element L1 with negative refractive power, a second lens element L2 with positive refractive power, a stop ST0, a third lens element L3 with positive refractive power, a fourth lens element L4 with positive refractive power, a fifth lens element L5 with negative refractive power, an infrared filter L6, and a protective glass L7. Wherein, the fourth lens L4 and the fifth lens L5 form a cemented lens. Fig. 18 is a spherical aberration diagram (mm), an astigmatism diagram (mm) and a distortion diagram (%) of the image capturing module 100 according to the ninth embodiment, wherein the astigmatism diagram and the distortion diagram are data diagrams at a reference wavelength.

In the ninth embodiment, the effective focal length f of the image capturing module 100 is 4.25mm, the aperture FNO is 2.00, and the maximum field angle FOV is 98.74 degrees (deg.).

In addition, the parameters of the image capturing module 100 are given in table 12, and the definitions of the parameters can be derived from the first embodiment, which is not described herein. Note that, however, the fourth lens L4 is cemented with the fifth lens L5, and the radius of curvature of the image-side surface S8 of the fourth lens L4 at the optical axis is the same as the radius of curvature of the object-side surface S9 of the fifth lens L5 at the optical axis, so the parameters of the image-side surface S8 of the fourth lens L4 are not shown in the table below. Meanwhile, since the object-side surface and the image-side surface of each lens are both spherical surfaces, when the curvature radius of any point on the object-side surface or the image-side surface of each lens is given, the curvature radius of each point on the surface is also determined, and therefore, in order to avoid repetition, an aspheric coefficient parameter table is not provided in the embodiment.

TABLE 12

referring to fig. 19, in some embodiments, the image capturing module 100 is provided with the photo sensor 110, and the photo sensor 110 is disposed on the image side of the protective glass L7. In some embodiments, the photosensitive chip 110 may be a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor).

Specifically, in some embodiments, the image capturing module 100 is a fixed focus module. In other embodiments, the voice coil motor is disposed on the photo sensor 110 to enable the photo sensor 110 to move relative to the lens of the image capturing module 100, so as to achieve the focusing function. In one embodiment, the protective glass L7 and the photosensitive chip 110 can be integrally fixed, so that the two can keep a relatively static state when the focusing movement is performed. In other embodiments, a fixing element may be disposed to fix the first lens L1, the second lens L2, the third lens L3, the stop ST0, the fourth lens L4, and the fifth lens L5, and a voice coil motor is disposed on the fixing element to drive the lenses and the stop ST0 to move relative to the photo sensor chip 110, so as to implement the focusing function.

In practical application, the photosensitive chip 110 is connected to a circuit board, and the photosensitive chip 110 converts the received image into an electrical signal and transmits the electrical signal to an image processor through the circuit board for processing optimization. Specifically, the image capturing module 100 can be applied to the fields of mobile phones, vehicles, monitoring, security, medical treatment, and the like.

Referring to fig. 20, in some embodiments, the image capturing module 100 may be communicatively connected to the display module 310 to form the electronic device 30 with image capturing and displaying functions. Specifically, the display module 310 includes a display screen 3111, light carrying environmental scene information is modulated by each lens of the image capturing module 100 and then received by the photosensitive chip 110, and the photosensitive chip 110 converts the light signal into an electrical signal and then transmits the electrical signal to the display module 310 through a circuit, and finally the electrical signal is displayed on the display screen 3111. At this time, by virtue of the large viewing angle characteristic of the image capturing module 100, the electronic device 30 can obtain a scene in a large viewing angle range on the object side of the lens (image capturing module 100) and display the scene on the display screen 3111. Similarly, the electronic device 30 can be used in the fields of mobile phones, vehicles, monitoring, security, medical treatment, and the like.

Referring to fig. 21, in some embodiments, the image capturing module 100 may be applied to the automobile 40 as an on-board camera. The vehicle 40 may be an autonomous vehicle or a non-autonomous vehicle. The image capturing module 100 can be used as a front camera, a rear camera or a side camera of the automobile 40. Specifically, the automobile 40 includes an automobile body 410, and the image capturing module 100 is mounted at any position of a left rear view mirror, a right rear view mirror, a rear tail box, a front lamp, a rear lamp, and the like of the automobile body 410 to obtain image information of a blind area of the field of view of the automobile 40 (e.g., to obtain larger left rear and right rear views). In addition, still be provided with display module 310 in the car 40, display module 310 installs in automobile body 410, and gets module 100 and display module 310 communication connection, and the image information that gets module 100 and obtain can transmit and show in display module 310 to make the driver can obtain more complete peripheral image information, improve the safety guarantee when driving.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An image capturing module, sequentially from an object side to an image side, comprising:

a first lens element with negative refractive power;

a third lens element with refractive power;

2. The image capturing module of claim 1, further comprising a stop disposed between the object side of the first lens element and the fourth lens element.

3. The image capturing module as claimed in claim 1, wherein the following relationship is satisfied:

-7.00＜f1/f＜0；

wherein f1 is the focal length of the first lens element, and f is the effective focal length of the image capturing module.

4. The image capturing module as claimed in claim 1, wherein the following relationship is satisfied:

f45/f＞1.50；

wherein f45 is a combined focal length of the fourth lens element and the fifth lens element, and f is an effective focal length of the image capturing module.

5. The image capturing module as claimed in claim 1, wherein the following relationship is satisfied:

1.00≤CT2/CT3＜5.00；

wherein CT2 is the thickness of the second lens element on the optical axis, and CT3 is the thickness of the third lens element on the optical axis.

6. The image capturing module as claimed in claim 1, wherein the following relationship is satisfied:

ΣCT/TL＜0.70；

wherein Σ CT is a total of thicknesses of the first lens element, the second lens element, the third lens element, the fourth lens element, and the fifth lens element on an optical axis, and TL is a distance between an object-side surface of the first lens element and an image plane of the image capturing module on the optical axis.

7. The image capturing module as claimed in claim 1, wherein the following relationship is satisfied:

ET4≥0.47；

ET4 is a lens thickness corresponding to a radius of the fourth lens in a direction perpendicular to the optical axis of the fourth lens being 3.3mm, and ET4 is expressed in mm.

8. The image capturing module as claimed in claim 1, wherein the following relationship is satisfied:

|R3|/|R4|≤5.00；

1.00＜|R5|/|R6|＜2.00；

wherein R3 is a radius of curvature of the object-side surface of the second lens element at the optical axis, R4 is a radius of curvature of the image-side surface of the second lens element at the optical axis, R5 is a radius of curvature of the object-side surface of the third lens element at the optical axis, and R6 is a radius of curvature of the image-side surface of the third lens element at the optical axis.

9. The image capturing module as claimed in claim 1, wherein the following relationship is satisfied:

0≤∣V2-V5∣＜35.00；

wherein V2 is the Abbe number of the second lens and V5 is the Abbe number of the fifth lens.

10. The image capturing module as claimed in claim 1, wherein the following relationship is satisfied:

(CT4-CT5)/(α4-α5)＜0；

wherein CT4 is the thickness of the fourth lens element on the optical axis, CT5 is the thickness of the fifth lens element on the optical axis, α 4 is the thermal expansion coefficient of the fourth lens element, and α 5 is the thermal expansion coefficient of the fifth lens element.

11. The image capturing module as claimed in claim 1, wherein the following relationship is satisfied:

f/EPD≤2.00；

wherein f is the effective focal length of the image capturing module, and EPD is the entrance pupil diameter of the image capturing module.

12. The image capturing module as claimed in claim 1, further comprising a photosensitive chip disposed on the image side of the fifth lens element, wherein the image capturing module satisfies the following relationship:

TL/Imgh≤3.50；

wherein TL is a distance from an object side surface of the first lens element to an imaging surface of the image capturing module on an optical axis, and Imgh is a diagonal length of a photosensitive area in the photosensitive chip.

13. The image capturing module as claimed in claim 1, further comprising a photosensitive chip disposed on the image side of the fifth lens element, wherein the image capturing module satisfies the following relationship:

tan[(1/2)FOV]/Y＞0.25；

the FOV is the angle of view of the image capturing module, the Y is half of the length of a diagonal line of a light sensing area in the photosensitive chip, and the unit of the Y is mm.

14. An electronic device, comprising a display module and the image capturing module of any one of claims 1-13, wherein the image capturing module is in communication with the display module, and an image obtained by the image capturing module can be displayed in the display module.

15. An automobile, characterized in that, includes automobile body and the electron device of claim 14, the display module set up in the automobile body, the left side and/or the right side of automobile body are provided with get for instance the module, get for instance the module with display module communication connection, get for instance the module and be used for collecting the image information of the side rear of car, the image information who gets for instance the module and obtain can show in the display module.