CN112153246A

CN112153246A - Camera module and display device

Info

Publication number: CN112153246A
Application number: CN201910566060.2A
Authority: CN
Inventors: 周美华; 蒋金波; 宋新新; 贾燕; 孙亚轩
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-12-29
Anticipated expiration: 2039-06-27
Also published as: CN112153246B

Abstract

The invention provides a camera module and a display device. The camera module includes: a lens group including a plurality of lenses coaxially arranged in a direction from an object side to an image side; the packaging shell limits the containing space, the lens group is arranged in the containing space, the packaging shell comprises a first side wall, a second side wall and a third side wall which are sequentially connected, the second side wall is arranged on the object side of the lens group, and the second side wall is made of silica gel. From this, the second lateral wall that is formed by silica gel has higher coefficient of friction, and when camera module and subsequent display module assembly, the difficult removal that takes place the relative position between camera module and the display module assembly realizes making a video recording the accurate counterpoint between module and the display module assembly to solve the easy slide position scheduling problem in the assembling process.

Description

Camera module and display device

Technical Field

The invention relates to the technical field of camera shooting, in particular to a camera module and a display device.

Background

Traditional camera module adopts refractive lens to set up more, and this kind of method is difficult better to correct the aberration and improve the pixel, also has the mode that adopts the plane of diffraction of adding in the lens group at present to improve the image quality of camera lens, and this kind of mode has increased the preparation degree of difficulty of lens undoubtedly, and this kind of mode is higher to the processing technology level requirement of lens simultaneously, and the dimensional tolerance restriction is comparatively strict.

In addition, the existing front camera module mostly adopts a straight cylinder type assembly mode, and the assembly is also not beneficial to saving the space under the screen. The method for assembling the straight cylinder type lens is that all the lenses are adjusted to be uniform in outer diameter, and the lenses and the gaskets are sequentially placed in the lens barrel during assembly. For the lens with smaller original aperture, for example, the half aperture of the first two or three lenses of the mobile phone lens is generally between 0.8mm and 1.3mm, the last lens of the mobile phone lens is generally larger, the general half aperture is about 2.3mm, and all the lenses are generally uniformly adjusted to the half aperture of about 3.2mm during final assembly. The assembly method increases the occupied space of the lens module under the display screen, and is not beneficial to realizing the compact-structure micro mobile phone lens module. The problem that the material is extravagant and whole module weight is great exists in straight preceding camera module of cylinder.

Therefore, the research on the camera module is needed.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, an object of the present invention is to provide a camera module with the advantages of easy assembly, easy processing, high imaging quality, small occupied space or low cost.

In one aspect of the invention, a camera module is provided. According to an embodiment of the present invention, the camera module includes: a lens group including a plurality of lenses coaxially arranged in a direction from an object side to an image side; the packaging shell, packaging shell prescribes a limit to accommodation space, the battery of lens sets up in the accommodation space, packaging shell is including the first lateral wall, second lateral wall and the third lateral wall that connect gradually, wherein, the second lateral wall sets up the thing side that the battery of lens is close to, the material of second lateral wall is silica gel. From this, the second lateral wall that is formed by silica gel has higher coefficient of friction, and when camera module and subsequent display module assembly, the difficult removal that takes place the relative position between camera module and the display module assembly realizes making a video recording the accurate counterpoint between module and the display module assembly to solve the easy slide position scheduling problem in the assembling process.

In another aspect of the present invention, a display device is provided. According to an embodiment of the present invention, the display device includes the camera module described above. Therefore, the processing difficulty of the display device is small, the pixels of the camera are high, and the imaging quality is good.

Drawings

Fig. 1 is a schematic structural diagram of a camera module according to an embodiment of the present invention.

Fig. 2 is a schematic structural view of a second sidewall according to another embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a camera module according to another embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a camera module according to another embodiment of the present invention.

Fig. 5 is a diagram illustrating a transfer function of a camera module according to another embodiment of the present invention.

Fig. 6 is a field curvature diagram of a camera module according to another embodiment of the present invention.

Fig. 7 is a distortion diagram of a camera module according to another embodiment of the invention.

Fig. 8 is a dot-column diagram of a camera module according to another embodiment of the present invention.

Fig. 9 is a phase diagram of a binary optical element in a camera module according to another embodiment of the invention.

Fig. 10 is a frequency plot of the profile of the binary optical element in the camera module according to yet another embodiment of the present invention.

Fig. 11 is a schematic structural diagram of a display device according to still another embodiment of the present invention.

Detailed Description

The following describes embodiments of the present invention in detail. The following examples are illustrative only and are not to be construed as limiting the invention. The examples, where specific techniques or conditions are not indicated, are to be construed according to the techniques or conditions described in the literature in the art or according to the product specifications.

In one aspect of the invention, a camera module is provided. According to an embodiment of the present invention, referring to fig. 1, a camera module includes: a lens group 10 (in fig. 1, the lens group 10 includes six lenses as an example, but is not limited to six lenses), the lens group 10 including a plurality of lenses coaxially arranged in a direction from an object side to an image side; and an encapsulating housing 20, the encapsulating housing 20 defining a containing space, the lens group 10 being disposed in the containing space, the encapsulating housing 20 including a first sidewall 21, a second sidewall 22 and a third sidewall 23 connected in sequence, wherein the second sidewall 22 is disposed on an object side of the lens group 10, and a material of the second sidewall 22 is a silicon rubber (LSR). Therefore, the second side wall formed by the silica gel has a higher friction coefficient, when the camera module and a subsequent display module are assembled, the camera module and the display module are not easy to move at relative positions, and accurate alignment between the camera module and the display module is realized so as to solve the problems of easy slide position and the like in the assembling process; LSR is workable, has high permeability moreover to and high light transmissivity, and then guarantee the higher light inlet amount of lens battery.

It should be noted that the above "coaxial arrangement" means that the central axis of each lens in the lens group is the same. The dotted line in fig. 1 (which refers to the dotted line extending from the camera module) represents the maximum field angle of the camera module, i.e., the field line at the edge of the field of view of the camera module; the blank between the lens group and the second side wall is air.

In some embodiments, the camera module further comprises an annular flare 70 disposed at an edge of the lens assembly near the second sidewall, wherein an inner diameter of the flare is less than or equal to a field angle of the camera module, and the flare can control the amount and angle of light entering the lens assembly.

According to the embodiment of the invention, in order to effectively encapsulate and fix the camera module, the first side wall and the third side wall are made of acrylonitrile-butadiene-styrene (ABS) plastic, and the encapsulation shell is integrally formed. Therefore, the packaging shell formed by the ABS plastic and the LSR can be integrally formed by a double-material injection molding method during preparation, and the processing efficiency can be effectively improved.

According to an embodiment of the present invention, in order to improve the imaging quality of the camera module, referring to fig. 2, a Binary optical element (Binary2)40 is disposed on the surface of the second sidewall 22 close to the lens group 10. Therefore, the binary optical element has a diffraction effect on light, and the diffraction effect and the refraction effect of the second side wall are combined, so that the imaging quality of the camera module can be effectively improved in a diffraction and refraction mixing mode, and compared with a mode of adding a diffraction surface on the surface of the lens group, the method provided by the invention can greatly reduce the manufacturing difficulty and reduce the requirement on the processing technology level of the lens group.

According to the embodiment of the invention, in order to further reduce the processing difficulty, the Binary optical element (Binary2) can be integrally formed with the second side wall, namely, the Binary optical element (Binary2) with diffraction effect is directly formed on the surface of the LSR close to the lens group by injection molding. From this, can further reduce the processing degree of difficulty of camera module.

According to an embodiment of the present invention, referring to fig. 1, a lens group 10 includes a first lens group 11 and a second lens group 12, a diameter R1 of the first lens group 11 is smaller than a diameter R2 of the second lens group, and calibers of lenses in the lens group 10 gradually increase in a direction from an object side to an image side. Therefore, in the direction from the image side to the object side, the aperture of the lens in the lens group is gradually reduced, and the diameter R1 of the first lens group is smaller than the diameter R2 of the second lens group, so the lens group with the structure is a front-shrinkage lens group, the use amount of materials such as the lens and the like can be reduced to a great extent, when the camera module is assembled and configured in the display module, the space utilization rate in the display module can be greatly improved, the camera module is more compact and smart, in addition, the stray light of the camera module can be reduced to a certain extent by the front-shrinkage lens group, and the camera quality is improved.

According to an embodiment of the present invention, referring to fig. 1, in order to reduce the interaction force between the lenses in the lens group, the camera module further includes an annular spacer 30, and the annular spacer 30 is disposed between two adjacent lenses and matches with the outer edge of the lenses. Therefore, the interaction force among the lenses in the lens group can be reduced, and part of light rays in the outermost view field can be shielded, so that stray light is eliminated. The thickness and size of the annular gasket between different lenses are different, and the technicians in the field can flexibly set the thickness and size according to the actual conditions such as the focal length of each lens in the lens group.

According to an embodiment of the invention, referring to fig. 3, at least a portion of the outer edges of the first 21 and third 23 side walls are provided with a threaded snap 50. From this, when assembling camera module and display module, the screw thread buckle can be used to assemble the camera module and be fixed in the electronic equipment who contains this display module. In some embodiments of the present invention, a threaded snap 50 is provided on the outer edge of the first and third sidewalls directly opposite the second lens group.

According to an embodiment of the present invention, referring to fig. 3, the camera module further includes a sensor 60 (i.e., an image sensor), and the sensor 60 is disposed on the image side of the lens group 10 with a gap from the lens group 10. Therefore, the final imaging of the camera module is realized. It should be noted that, air gaps are provided between adjacent lenses in the lens group and between the lens group and the sensor.

According to the embodiment of the present invention, the specific number of lenses in the lens group is not limited, and those skilled in the art can flexibly set the focal length, the rear working distance, the imaging height, the pixels of the lens group, and the like of the lens group according to practical situations. In some embodiments of the present invention, referring to fig. 3, the first lens group 11 includes a first lens 111, a second lens 112, and a third lens 113 arranged in sequence from the object side to the image side, and the second lens group 12 includes a fourth lens 124, a fifth lens 125, and a sixth lens 126 arranged in sequence from the object side to the image side, wherein, in order to control the light entering amount of the lens groups, an aperture stop (not shown in the figure) is disposed on a surface of the first lens close to the second sidewall, so that not only the light entering amount of the lens groups can be effectively controlled, but also the imaging quality of the central field of view of the lens groups can be effectively ensured.

According to the embodiment of the invention, in order to obtain a high-pixel and high-imaging-quality camera module, the focal length of the lens group is 3.45 to 3.75 millimeters (such as 3.45 millimeters, 3.55 millimeters, 3.65 millimeters or 3.75 millimeters), the rear working distance (i.e. the rear intercept of the camera module) D1 (referring to fig. 3) of the lens group (referring to the distance from the sixth lens to the surface (i.e. the image plane) of the sensor close to the lens group) is greater than 0.82 ± 0.3 millimeters (± 0.3 millimeters referring to a set value of the rear working distance), the total length D2 (referring to fig. 4) of the lens group is 3.9 to 4.3 millimeters (such as 3.9 millimeters, 4.0 millimeters, 4.1 millimeters, 4.2 millimeters or 4.3 millimeters), and the half-image height D3 (referring to fig. 4) of the lens group is 2.86 to 3.26 millimeters. Therefore, the camera module with high pixel and high imaging quality can be obtained. In fig. 4, when the camera module is assembled in the display device, an infrared filter 200 is further disposed on the image side of the camera module (i.e., on a side of the sensor 60 away from the lens group), and the infrared filter is disposed to reduce the influence of infrared light on the noise of the sensor 60 (the sensor 60 is not shown); the half-image height D3 of the lens group is half of the height of the image plane 61 (image plane refers to the surface of the sensor near the lens group) in fig. 4.

According to an embodiment of the present invention, in order to obtain the lens group having the above features, the aperture of the first lens is 1.5 to 1.7 mm (e.g., 1.5 mm, 1.6 mm, 1.7 mm), the aperture of the second lens is 1.56 to 1.76 mm (e.g., 1.56 mm, 1.66 mm, 1.76 mm), the aperture of the third lens is 1.68 to 1.88 mm (e.g., 1.68 mm, 1.78 mm, 1.88 mm), the aperture of the fourth lens is 1.98 to 2.18 mm (e.g., 1.98 mm, 2.08 mm, 2.18 mm), the aperture of the fifth lens is 2.96 to 3.16 mm (e.g., 2.96 mm, 3.06 mm, 3.16 mm), and the aperture of the sixth lens is 4.22 to 4.42 mm (e.4.22 mm, 4.32 mm, 4.42 mm). Therefore, the fourth lens, the fifth lens and the sixth lens are arranged in a ladder shape, the calibers of the fourth lens, the fifth lens and the sixth lens are gradually increased, the aperture of the lens in the first lens group is smaller than the caliber of the lens in the second lens group, and as mentioned above, the diameter R1 of the first lens group is smaller than the diameter R2 of the second lens group, so that the lens group with the structure is a front-shrinkage lens group, the use amount of materials such as the lenses and the like can be greatly reduced, when the camera module is assembled and configured in the display module, the space utilization rate in the display module can be greatly improved, and the camera module is enabled to be more compact and smart; moreover, the lens group with the caliber can ensure that the camera module has the advantages of good shooting quality, large picture space, large view field angle and the like.

According to the embodiment of the invention, the focal length of the first lens is 3.41-3.61 mm (such as 3.41 mm, 3.51 mm or 3.61 mm); the focal length of the second lens is-7.51 to-7.31 mm (such as-7.51 mm, -7.41 mm or-7.31 mm); the focal length of the third lens is 8.82-9.02 mm (such as 8.82 mm, 8.92 mm and 9.02 mm); the focal length of the fourth lens is-15.84 to-15.64 mm (such as-15.84 mm, -15.74 mm or-15.64 mm); the focal length of the fifth lens is 2.79-2.99 mm (such as 2.79 mm, 2.89 mm or 2.99 mm); the focal length of the sixth lens is-2.24 to-2.04 mm (such as-2.24 mm, -2.14 mm or-2.04 mm). Therefore, the first lens, the third lens and the fifth lens are positive lenses, the second lens, the fourth lens and the sixth lens are negative lenses, and the focal lengths of the six lenses are set, so that the diopter of each lens is balanced, the sensitivity of the lenses is reduced, the generation of aberration is reduced, and the feasibility of lens processing can be improved.

According to the embodiment of the invention, the distance between the first lens and the second lens can be 0.04-0.10 mm (such as 0.04 mm, 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm or 0.10 mm); the distance between the second lens and the third lens can be 0.07-0.17 mm (such as 0.07 mm, 0.09 mm, 0.11 mm, 0.13 mm, 0.15 mm or 0.17 mm); the distance between the third lens and the fourth lens can be 0.29-0.49 mm (such as 0.29 mm, 0.31 mm, 0.33 mm, 0.35 mm, 0.37 mm, 0.39 mm, 0.41 mm, 0.43 mm, 0.45 mm, 0.47 mm or 0.49 mm); the distance between the fourth lens and the fifth lens can be 0.18-0.38 mm (such as 0.18 mm, 0.2 mm, 0.22 mm, 0.24 mm, 0.26 mm, 0.28 mm, 0.30 mm, 0.32 mm, 0.34 mm, 0.36 mm or 0.38 mm); the distance between the fifth lens and the sixth lens can be 0.26-0.46 mm (for example: 0.26 mm, 0.28 mm, 0.3 mm, 0.32 mm, 0.34 mm, 0.36 mm, 0.38 mm, 0.4 mm, 0.42 mm, 0.44 mm or 0.46 mm). Therefore, the distance between the lenses can further improve the imaging quality of the camera module.

As is well known to those skilled in the art, in order to obtain a lens set with excellent performance, the dimensional tolerance of each lens is more strict, and in the embodiment of the present invention, the tilt tolerance of each lens in the lens set is less than or equal to 1.6 microns, the decentration tolerance is less than or equal to 1.5 microns, and the thickness tolerance is less than or equal to 2 microns. Therefore, within the tolerance range, the precision of the lens group is high, and the camera module can shoot pictures with high pixels and good quality.

According to an embodiment of the present invention, each lens of the lens group is an aspherical lens. Therefore, the optical lens can have better curvature radius, maintain good aberration correction and obtain the required performance; moreover, the aspheric lens can enable the camera module to have excellent sharpness and higher resolution, and meanwhile, the camera module is beneficial to miniaturization design. In the embodiment of the invention, each lens in the lens group is an aspheric lens made of plastic material, so that the total weight of the lens group can be greatly reduced.

According to the embodiment of the invention, the refractive indexes of the first lens, the third lens, the fifth lens and the sixth lens are 1.539-1.541, such as 1.539, 1.54 and 1.541, the Abbe numbers are 54.99-56.99, such as 54.99, 55.99 and 56.99; the refractive index of the second lens and the refractive index of the fourth lens are 1.659-1.661, such as 1.659, 1.66 and 1.661, and the Abbe number is 19.37-21.37, such as 19.37, 20.37 and 21.37. Therefore, the camera quality of the camera module can be further improved.

According to embodiments of the present invention, the camera module may be used in a display device such as a mobile phone, an iPad, or a computer, and in some embodiments of the present invention, the camera module may be a front camera serving as a mobile phone, and the camera module may achieve or realize a large viewing angle of 80 degrees or more, so that the mobile phone lens has a better photographing effect and a larger picture space, and can realize a photographing function of 1600 ten thousand pixels or more.

According to some embodiments of the present invention, a performance test is performed on the camera module, specifically:

1. referring to fig. 5, it can be seen from fig. 5 that the coefficient of the transfer function at the 110 line pair is greater than 0.62 ± 0.01, and those skilled in the art can understand that when the straight line in fig. 5 is made, an equation of the straight line is obtained, and the coefficient of the transfer function at the 476 line pair (full field of view) can be calculated according to the equation and is still greater than 0.1 ± 0.01, so that the camera module has good imaging capability and high resolution;

2. referring to fig. 6, as can be seen from fig. 6, the curvature of field of the camera module is controlled within (-0.5 ± 0.05) mm to (+0.5 ± 0.05) mm, and the curvature of field within 0.8 field of view is controlled within (-0.1 ± 0.01) mm to (+0.1 ± 0.01) mm (the numerical value of the corresponding abscissa when the ordinate is 0.8), so that the resolution of the image shot by the camera module is high, and the pursuit of the high-definition image by the user is satisfied;

3. referring to fig. 7, it can be seen from fig. 7 that the lens distortion of the camera module is controlled between-1 and +1, and thus the camera module can effectively control or reduce the distortion and deformation of the image;

4. referring to FIG. 8, in the point chart, under different IMA conditions, the RMS radius values obtained are 2.426 (IMA: 0.000), 3.455 (IMA: 0.281), 4.761 (IMA: 0.563), 5.071 (IMA: 0.847), 4.495 (IMA: 1.131), 4.115 (IMA: 1.414), 4.368 (IMA: 1.694), 4.443 (IMA: 1.973), 7.143 (IMA: 2.252), 14.243 (IMA: 2.253), 22.179 (IMA: 2.800), 22.952 (IMA: 3.090), respectively, and as can be seen from FIG. 8, the imaging quality of the camera module is better;

5. the phase diagram of the binary optical element refers to fig. 9, the contour frequency diagram of the binary optical element refers to fig. 10, and as can be seen from fig. 9, the surface shape of the binary optical element is more regular, and the phase is regular; as can be seen from fig. 10, the points of the area radius (the abscissa value corresponding to the plotted point in fig. 10) are regularly located in the square, and the curvature radius and the number of the ring belts are in a linear relationship, so that it can be characterized that the binary optical element is in a workable range and is easy to process.

According to the embodiment of the invention, the camera module with the structure at least obtains the following technical effects:

1. the LSR material is injected in front of a lens of the lens set, and the alignment accuracy between the camera module and the display device can be increased in the subsequent assembly with the display device by utilizing the characteristics of high permeability, easiness in processing and high friction coefficient of the LSR material, so that the problem of easiness in sliding in the assembly process is solved;

2. the arrangement and the arrangement mode of the Binary optical element (Binary2) can effectively improve the imaging quality of the camera module and have lower manufacturing difficulty; the Binary optical element (Binary2) can be integrally formed with the LSR, so that the processing difficulty of the camera module can be further reduced;

3. the preceding formula of contracting battery of lens can to a great extent reduce the use amount of materials such as lens, when in assembling the configuration display module with the camera mould, can improve the space utilization in the display module greatly for the better compactness of camera module and dexterity, in addition, the stray light of camera module can also be reduced to a certain extent to this kind of preceding formula of contracting battery of lens, improves the quality of making a video recording.

In another aspect of the present invention, a display device is provided. According to an embodiment of the present invention, the display device includes the camera module described above. Therefore, the processing difficulty of the display device is small, the pixels of the camera are high, and the imaging quality is good. As can be understood by those skilled in the art, the display device has all the features and advantages of the camera module described above, and thus, the detailed description thereof is omitted.

According to an embodiment of the present invention, referring to fig. 11, the display device further includes: display module assembly, display module assembly 300 are equipped with hole S, in addition, camera module assembly includes the battery of lens, the battery of lens includes first battery of lens and second battery of lens, and wherein, first battery of lens sets up in hole S, and the second battery of lens sets up outside hole S. The specific type of the display module has no limitation requirement, and can be an OLED display module or an LCD display module. In some embodiments of the present invention, the display module 300 is an LCD display module, and referring to fig. 11, the display module 300 includes a backlight module 310, a display panel 320, a glass cover 330, and a mechanical structure 340 (the mechanical structure 340 refers to some other necessary mechanical structures in the display module), wherein the hole S is disposed in the backlight module. Therefore, the camera module can be used as a front camera of the LCD display device, has higher pixels, larger picture space and better image quality, and in some embodiments, the LCD display device has a large visual angle of 80 degrees or more, good photographing effect and large picture space, can realize the photographing function of 1600 ten thousand pixels and more, and can greatly improve the market competitiveness of the display device.

It should be noted that, referring to fig. 11, if the display panel 320 and the glass cover plate 330 cannot be completely attached due to factors such as a process method, an air gap with a certain distance is formed between the display panel 320 and the glass cover plate 330; of course, if the display panel 320 and the glass cover 330 can be completely attached to each other, there is no air gap between the display panel 320 and the glass cover 330.

Those skilled in the art can understand that, according to the actual conditions such as the requirement of the camera on the light incoming amount and the light transmittance of the display panel, those skilled in the art can flexibly determine whether to provide the through hole at the display panel 320 corresponding to the cavity S (i.e. at the position of the dotted line of the display panel 320 in fig. 11): in some embodiments, the light transmittance of the display panel is poor, and a through hole may be disposed at the display panel 320 corresponding to the cavity S (i.e., at the position of the dotted line of the display panel 320 in fig. 11), so as to satisfy the light entering amount required by the camera module when taking a picture; in other embodiments, the display panel has better light transmittance, and no through hole is provided. Furthermore, those skilled in the art can also flexibly determine whether to set a through hole at the glass cover plate 330 corresponding to the cavity S (i.e. at the position of the dotted line at the glass cover plate 330 in fig. 11) according to the actual situation, and in some embodiments, because the glass cover plate is transparent and has a high light transmittance, the through hole may not be set at the glass cover plate 330 corresponding to the cavity S; in other embodiments, in order to further increase the light incident amount of the camera module, a through hole may be provided at the glass cover 330 corresponding to the cavity S (i.e., at the position of the dashed line at the glass cover 330 in fig. 11).

According to the embodiment of the present invention, referring to fig. 11, the display device further includes an infrared filter 200, the infrared filter 200 is disposed at an interval on one side of the camera module, which is close to the lens set 10, of the sensor 60, and a gap is formed between the infrared filter 200 and the sensor 60, so that the influence of infrared light on the noise of the sensor 60 can be effectively reduced through the arrangement of the infrared filter 200.

According to the embodiment of the present invention, the specific type of the display device is not limited, and may be any display device with a shooting function, such as a mobile phone, an iPad, a notebook computer, and the like.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

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 implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; 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 by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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, the schematic representations of the terms used above are not necessarily intended to 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, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

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 that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. The utility model provides a camera module which characterized in that includes:

a lens group including a plurality of lenses coaxially arranged in a direction from an object side to an image side;

the packaging shell, packaging shell prescribes a limit to accommodation space, the battery of lens sets up in the accommodation space, packaging shell is including the first lateral wall, second lateral wall and the third lateral wall that connect gradually, wherein, the second lateral wall sets up the thing side of battery of lens, the material of second lateral wall is silica gel.

2. The camera module of claim 1, wherein the material of the first sidewall and the third sidewall is acrylonitrile butadiene styrene plastic, and the package housing is integrally formed.

3. The camera module of claim 1, wherein a surface of the second sidewall proximate to the lens group has a binary optical element disposed thereon.

4. The camera module of claim 3, wherein the binary optical element is integrally formed with the second sidewall.

5. The camera module according to claim 1, wherein the lens group comprises a first lens group and a second lens group, a diameter of the first lens group is smaller than a diameter of the second lens group, and a caliber of each of the lenses in a direction from the object side to the image side gradually increases.

6. The camera module according to claim 1, wherein the first lens group comprises a first lens, a second lens and a third lens arranged in sequence in a direction from the object side to the image side, wherein an aperture stop is disposed on a surface of the first lens close to the second sidewall.

7. The camera module according to any one of claims 1 to 6, wherein the focal length of the lens group is 3.45 to 3.75 mm, the rear working distance of the lens group is greater than 0.82 ± 0.3 mm, the total length of the lens group is 3.9 to 4.3 mm, and the half-image height of the lens group is 2.86 to 3.26 mm.

8. The camera module according to claim 6, wherein the first lens has a diameter of 1.5 to 1.7 mm, the second lens has a diameter of 1.56 to 1.76 mm, the third lens has a diameter of 1.68 to 1.88 mm, the fourth lens has a diameter of 1.98 to 2.18 mm, the fifth lens has a diameter of 2.96 to 3.16 mm, and the sixth lens has a diameter of 4.22 to 4.42 mm.

9. The camera module of claim 6, wherein the second lens group comprises a fourth lens, a fifth lens and a sixth lens, which are arranged in order in a direction from the object side to the image side,

the focal length of the first lens is 3.41-3.61 mm; the focal length of the second lens is-7.51 to-7.31 millimeters; the focal length of the third lens is 8.82-9.02 mm; the focal length of the fourth lens is-15.84 to-15.64 millimeters; the focal length of the fifth lens is 2.79-2.99 mm; the focal length of the sixth lens is-2.24 to-2.04 mm,

the distance between the first lens and the second lens can be 0.04-0.10 mm; the distance between the second lens and the third lens can be 0.07-0.17 mm; the distance between the third lens and the fourth lens can be 0.29-0.49 mm; the interval between the fourth lens and the fifth lens can be 0.18-0.38 mm; the interval between the fifth lens and the sixth lens can be 0.26-0.46 mm,

the refractive index of the first lens, the refractive index of the third lens, the refractive index of the fifth lens and the refractive index of the sixth lens are 1.539-1.541, and the Abbe number of the first lens is 54.99-56.99; the refractive index of the second lens and the refractive index of the fourth lens are 1.659-1.661, and the Abbe number is 19.37-21.37.

10. The camera module of claim 1 or 9, wherein each lens of the lens group is an aspheric lens.

11. The camera module of claim 1, further comprising an annular spacer disposed between two adjacent lenses and matching the outer edges of the lenses.

12. The camera module of claim 1 or 11, wherein at least a portion of an outer edge of the first and third sidewalls has a threaded snap.

13. The camera module of claim 1, further comprising a sensor disposed on an image side of the lens group with a gap therebetween.

14. A display device, comprising the camera module according to any one of claims 1 to 13.

15. The display device according to claim 14, wherein the camera module includes a lens group including a first lens group and a second lens group, the display device further comprising:

the display module assembly is provided with a hole, wherein the first lens assembly is arranged in the hole, and the second lens assembly is arranged outside the hole.