CN115835000A

CN115835000A - Camera module and electronic equipment

Info

Publication number: CN115835000A
Application number: CN202211473831.1A
Authority: CN
Inventors: 周航; 李文珍
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-03-21

Abstract

The application discloses camera module and electronic equipment relates to camera equipment technical field. This camera module includes casing, camera lens, leaded light component, sensitization chip and actuating mechanism, the camera lens optical element sensitization chip with actuating mechanism all set up in the accommodation space of casing, leaded light component is the gradual change refractive index lens, the casing has the light transmission area territory, the sensitization chip is located accommodation space keeps away from optical element's one end, optical element has the income plain noodles and the play plain noodles that the homonymy set up, the regional orientation of light transmission goes into the plain noodles, go out the plain noodles orientation sensitization chip, the camera lens set up in the light transmission area extremely the light path of sensitization chip.

Description

Camera module and electronic equipment

Technical Field

The application belongs to the technical field of camera equipment, and particularly relates to a camera module and electronic equipment.

Background

The shooting function is one of the basic functions of the electronic device, but with the continuous miniaturization of the electronic device and the higher and higher requirements of users on the shooting function, how to consider the increasing camera volume and the light and thin body design is a problem to be solved urgently at present.

The electronic equipment mainly adopts a conventional camera and a periscopic camera, and for the conventional camera, when a photosensitive chip is enlarged, a corresponding lens is also enlarged, which inevitably causes the height of the camera to be enlarged; for a periscopic camera, a reflector is added in front of a lens for reflecting light, although the angle of view of imaging is greatly reduced, the size of a photosensitive chip is larger to meet the photosensitive requirement, and the height of the camera with the structure is still larger.

Disclosure of Invention

The embodiment of the application aims to provide a camera module and electronic equipment, and the problem that the existing camera module is large in height can be solved.

In order to solve the technical problem, the present application is implemented as follows:

in a first aspect, an embodiment of the present application provides a camera module, which includes a housing, a lens, a light guide element, a photosensitive chip, and a driving mechanism, wherein the lens, the optical element, the photosensitive chip, and the driving mechanism are all disposed in an accommodating space of the housing, the light guide element is a graded index lens,

the casing has the light transmission region, the sensitization chip is located accommodation space keeps away from optical element's one end, optical element has the income plain noodles and the play plain noodles that the homonymy set up, the light transmission region orientation go into the plain noodles, go out the plain noodles orientation sensitization chip, the camera lens set up in the light transmission region extremely the light path of sensitization chip.

In a second aspect, an embodiment of the present application further provides an electronic device, including the camera module described above.

In this application embodiment, the leaded light component is graded index lens, and its propagation direction that can change light, sensitization chip do not set up in the regional light direction that advances of printing opacity, but pass through the regional light that gets into of printing opacity and change the light path back with the leaded light component, inject into sensitization chip again, the propagation path of light this moment is through the height that corresponds after buckling less to reduce the height of camera module. Therefore, the problem that the height of the existing camera module is large can be solved.

Drawings

Fig. 1 is a schematic structural diagram of a camera module disclosed in an embodiment of the present application;

fig. 2 to 3 are cross-sectional views of a camera module disclosed in an embodiment of the present application;

in fig. 3, the dotted arrow lines indicate the propagation paths of the light.

Description of reference numerals:

100-shell, 110-light transmissive region;

200-lens, 210-first lens, 220-second lens, 230-third lens;

300-a light guide element, 310-a light incident surface, 320-a light emergent surface, 330-a first part and 340-a second part;

400-a photosensitive chip;

500-drive mechanism, 510-first drive mechanism, 520-second drive mechanism.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

The camera module and the electronic device provided by the embodiment of the present application are described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

Referring to fig. 1 to 3, an embodiment of the present application discloses a camera module, which includes a housing 100, a lens 200, a light guide element 300, and a photo sensor chip 400, where the lens 200, the light guide element 300, and the photo sensor chip 400 are all disposed in an accommodating space of the housing 100, and optionally, the lens 200 may be at least one of a wide-angle lens and a telephoto lens, which is not limited herein. The light guide element 300 is a graded index lens capable of changing the propagation direction of light. The housing 100 has a light-transmitting region 110, and the light-transmitting region 110 allows light to pass therethrough, so that light in the external environment enters the housing 100. In a specific embodiment, the size and shape of the light-transmitting area 110 are not particularly limited, the light-transmitting area 110 may be provided with a lens to improve the sealing performance of the camera module, or the housing 100 may be integrally configured as a light-transmitting structure (for example, the housing 100 may be a glass shell), a part of the area of the housing 100 may be the light-transmitting area 110, and another part of the area may be provided with a light-shielding structure, so as to improve the appearance integrity of the camera module and improve the structural strength of the electronic device. The light sensing chip 400 is located at one end of the accommodating space far away from the light guiding element 300, the light guiding element 300 has a light incident surface 310 and a light emitting surface 320 that are disposed at the same side, the light transmissive region 110 faces the light incident surface 310, and the light emitting surface 320 faces the light sensing chip 400, that is, light in an external environment enters the light incident surface 310 from the light transmissive region 110, and exits from the light emitting surface 320 after changing a propagation path through the light guiding element 300, and then enters the light sensing chip 400, and the lens 200 is disposed on a light path from the light transmissive region 110 to the light sensing chip 400, optionally, the lens 200 may be disposed between the light transmissive region 110 and the light incident surface 310, and a light entering direction of the lens 200 is the same as a light entering direction of the light incident surface 310 at this time, of course, the lens 200 may also be disposed between the light emitting surface 320 and the light sensing chip 400, and a light entering direction of the lens 200 is the same as a light exiting direction of the light emitting surface 320 at this time, which the embodiment of the present application does not specifically limit the arrangement mode of the lens 200.

As shown in fig. 3, optionally, in the direction extending from the light incident surface 310 of the light guide element 300 to the light emitting surface 320 of the light guide element 300, the refractive index of the light guide element 300 gradually increases and then gradually decreases, so that the light entering the light guide element 300 from the light incident surface 310 converges and then diverges, and finally exits from the light emitting surface 320, thereby achieving the purpose of changing the propagation direction of the light in the light guide element 300. Of course, the light guide element 300 may also be at least two reflectors, and the light traveling direction is changed by the reflection of the reflectors, but the number of components of the camera module is increased compared to the case of using a graded index lens, and the assembly efficiency is reduced.

In the embodiment of the present application, the light guide element 300 is a graded index lens, which can change the propagation direction of light, the photosensitive chip 400 is not disposed in the light entering direction of the light transmissive region 110, but the light entering the light transmissive region 110 passes through the light guide element 300 to change the path of the light, and then enters the photosensitive chip 400, and the propagation path of the light is bent to a smaller height, so as to reduce the height of the camera module. Therefore, the problem that the height of the existing camera module is large can be solved.

In an alternative embodiment, the light guiding element 300 includes a first portion 330 and a second portion 340 connected to each other, the first portion 330 has an incident surface 310, the first portion 330 is a self-focusing lens having focusing and imaging functions, and the refractive index of the material of the self-focusing lens is gradually increased in a direction extending from the incident surface 310 to the exit surface 320, so that light incident from the incident surface 310 can be continuously refracted, and thus the exiting light can be smoothly and continuously emitted. The second portion 340 is provided with the light-emitting surface 320, the second portion 340 is a self-defocusing lens, and the refractive index of the material of the self-defocusing lens is gradually reduced in the direction that the light-entering surface 310 extends towards the light-emitting surface 320, so that the light rays entering the self-defocusing lens can be continuously refracted, and the light rays emitted from the light-emitting surface 320 are smooth and continuous. The arrangement mode enables the light entering the camera module to be focused firstly and then defocused and then reach the photosensitive chip, and compared with the scheme that the light is focused after defocused and then reaches the photosensitive chip, the former can enable the light to be focused firstly in the camera module, so that the size of the light guide element 300 does not need to be set larger, and the space occupied by the camera module is reduced.

Optionally, the first portion 330 and the second portion 340 may be an integrated structure, so that the light propagation continuity is good, and the light guide element 300 is convenient to set; in another embodiment, the first portion 330 and the second portion 340 may also be a split structure, in which case, the propagation direction of the light may be changed according to actual needs.

In another optional embodiment, the camera module further includes a driving mechanism 500, the driving mechanism 500 is disposed in the accommodating space of the housing 100, the driving mechanism 500 is connected to at least one of the lens 200 and the photosensitive chip 400, and the driving mechanism 500 drives at least one of the lens 200 and the photosensitive chip 400 to move, optionally, when the driving mechanism 500 is connected to the lens 200 and the photosensitive chip 400 respectively, the driving mechanism 500 drives the lens 200 and the photosensitive chip 400 to move respectively, so that the focal length between the lens 200 and the photosensitive chip 400 changes continuously, thereby implementing a continuous zooming function of the camera module, and making the picture taken by the camera module clearer. In another embodiment, the driving mechanism 500 is connected to one of the lens 200 and the photo sensor chip 400, the driving mechanism 500 drives one of the lens 200 and the photo sensor chip 400 to move, for example, when the driving mechanism 500 is connected to the lens 200, the driving mechanism 500 drives the lens 200 to move relative to the photo sensor chip 400, so as to realize the focusing or anti-shake function of the camera module; of course, the driving mechanism 500 may also be connected to the photosensitive chip 400, and at this time, the driving mechanism 500 drives the photosensitive chip 400 to move relative to the lens 200, and the focusing or anti-shake function of the camera module may also be implemented, and the connection manner between the driving mechanism 500 and the lens 200 and the photosensitive chip 400 is not particularly limited in the embodiment of the present application.

The number of the lenses 200 may be one, or, optionally, the number of the lenses 200 is at least two, the at least two lenses 200 include a first lens 210 and a second lens 220, the first lens 210 is disposed in the light-transmitting region 110, and the second lens 220 is disposed on the light path between the first lens 210 and the light-sensing chip 400, optionally, the second lens 220 may be disposed between the first lens 210 and the light-entering surface 310, or between the light-exiting surface 320 and the light-sensing chip 400, which is not limited specifically herein, in the latter embodiment, the first lens 210 and the second lens 220 may be disposed side by side, so as to further reduce the height of the camera module. After the number of the lenses 200 is increased, the shooting effect of the camera module is improved. The driving mechanism 500 is connected to the second lens 220, and the driving mechanism 500 drives the second lens 220 to move relative to the first lens 210, so that the focal lengths between the first lens 210 and the second lens 220 and the photosensitive chip 400 are continuously changed, and the continuous zooming function of the camera module is further optimized, so that the picture taken by the camera module is clearer.

In a further alternative embodiment, the second lens 220 is disposed between the first lens 210 and the light incident surface 310, the at least two lenses 200 further include a third lens 230, and the third lens 230 is disposed between the light sensing chip 400 and the light emitting surface 320, at this time, the second lens 220 and the third lens 230 may be disposed side by side, so as to further reduce the height of the camera module. The number of the driving mechanisms 500 is at least two, and the driving mechanisms include a first driving mechanism 510 and a second driving mechanism 520, the first driving mechanism 510 is connected to the third lens 230, the first driving mechanism 510 drives the third lens 230 to move relative to the photo-sensing chip 400, the second driving mechanism 520 is connected to the second lens 220, and the second driving mechanism 520 drives the second lens 220 to move relative to the first lens 210. In the continuous zooming process of the camera module, the first driving mechanism 510 and the second driving mechanism 520 can respectively drive the third lens 230 and the second lens 220 to move independently, so that the accuracy of focal length change between the first lens 210, the second lens 220, the third lens 230 and the photosensitive chip 400 is improved, and the definition of pictures shot by the camera module is further improved.

In another optional embodiment, the driving mechanism 500 further includes a third driving mechanism, the third driving mechanism is connected to one of the photo sensor chip 400, the second lens 220 and the third lens 230, and the third driving mechanism drives one of the photo sensor chip 400, the second lens 220 and the third lens 230 to rotate, so as to realize the anti-shake function of the camera module, and thus improve the definition of the captured image.

Alternatively, the first driving mechanism 510, the second driving mechanism 520, and the third driving mechanism may be a voice coil motor, an ultrasonic motor, and the like, respectively, which is not particularly limited in the embodiments of the present application.

In the direction in which the light incident surface 310 extends toward the light emitting surface 320, the light sensing chip 400 and the first lens 210 may be disposed in a staggered manner, and at this time, a height difference exists between the position of the light sensing chip 400 and the position of the first lens 210, which results in a larger overall height of the camera module. Therefore, in another alternative embodiment, the photosensitive chip 400 and the first lens 210 are arranged side by side, and the height of the photosensitive chip 400 is substantially the same as the height of the first lens 210, which is beneficial to further reducing the overall height of the camera module.

In yet another alternative embodiment, the driving mechanism 500 includes a coil and a magnetic member, which are oppositely disposed, one of the coil and the magnetic member is disposed on the lens 200, and the other is disposed on the housing 100, and when the coil is energized, a magnetic driving force is generated between the coil and the magnetic member, so as to drive the lens 200 to move. The scheme adopts a non-contact driving mode, has the characteristics of small friction and quick response, can reduce the abrasion to the lens 200 and prolong the service life of the camera module; in addition, the driving mechanism 500 in the embodiment of the present application employs a coil and a magnetic member, and the driving method is simpler and the production cost is lower.

Optionally, the light incident surface 310 and the light emitting surface 320 may not be coplanar, and a height difference exists between the light incident surface 310 and the light emitting surface, so that the camera module occupies a larger space in the height direction. Based on this, in another alternative embodiment, the light incident surface 310 and the light emitting surface 320 are coplanar, the space occupied by the camera module in the height direction of the camera module is smaller, the overall structure of the camera module is more compact, and the improvement of the space utilization rate and the stability of the camera module is facilitated. Further optionally, the light incident surface 310 and the light emitting surface 320 may be perpendicular to the optical axis of the lens 200, so as to further reduce the height of the camera module.

Based on the camera module that this application embodiment disclosed, this application embodiment still discloses an electronic equipment, and it includes the camera module of above-mentioned arbitrary embodiment.

The electronic device disclosed in the embodiment of the present application may be an electronic device such as a smart phone, a tablet computer, an electronic book reader, a wearable device (e.g., a smart watch), and an electronic game machine, and the kind of the electronic device is not particularly limited in the embodiment of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A camera module is characterized by comprising a shell (100), a lens (200), a light guide element (300) and a photosensitive chip (400), wherein the lens (200), the light guide element (300) and the photosensitive chip (400) are all arranged in an accommodating space of the shell (100), the light guide element (300) is a graded index lens,

casing (100) have light transmission region (110), sensitization chip (400) are located accommodation space keeps away from the one end of leaded light component (300), leaded light component (300) have income plain noodles (310) and play plain noodles (320) that the homonymy set up, light transmission region (110) orientation go into plain noodles (310), go out plain noodles (320) orientation sensitization chip (400), camera lens (200) set up in light transmission region (110) extremely the light path of sensitization chip (400).

2. The camera module according to claim 1, wherein the light guide element (300) comprises a first portion (330) and a second portion (340) connected to each other, the first portion (330) is provided with the light incident surface (310), the first portion (330) is a self-focusing lens, the second portion (340) is provided with the light emergent surface (320), and the second portion (340) is a self-defocusing lens.

3. The camera module according to claim 1, further comprising a driving mechanism (500), wherein the driving mechanism (500) is disposed in the accommodating space, the driving mechanism (500) is connected to at least one of the lens (200) and the photo sensor chip (400), and the driving mechanism (500) drives at least one of the lens (200) and the photo sensor chip (400) to move.

4. The camera module according to claim 3, wherein the number of the lenses (200) is at least two, the at least two lenses (200) include a first lens (210) and a second lens (220), the first lens (210) is disposed on the light-transmitting region (110), the second lens (220) is disposed on an optical path between the first lens (210) and the light-sensing chip (400), the driving mechanism (500) is connected to the second lens (220), and the driving mechanism (500) drives the second lens (220) to move relative to the first lens (210).

5. The camera module according to claim 4, wherein the second lens (220) is disposed between the first lens (210) and the light incident surface (310), the at least two lenses (200) further include a third lens (230), the third lens (230) is disposed between the light sensing chip (400) and the light emergent surface (320), the second lens (220) and the third lens (230) are disposed side by side, the number of the driving mechanisms (500) is at least two, the driving mechanisms include a first driving mechanism (510) and a second driving mechanism (520), the first driving mechanism (510) is connected to the third lens (230), the first driving mechanism (510) drives the third lens (230) to move relative to the light sensing chip (400), the second driving mechanism (520) is connected to the second lens (220), and the second driving mechanism (520) drives the second lens (220) to move relative to the first lens (210).

6. The camera module according to claim 5, wherein the driving mechanism (500) further comprises a third driving mechanism, the third driving mechanism is connected to one of the photo-sensing chip (400), the second lens (220) and the third lens (230), and the third driving mechanism drives one of the photo-sensing chip (400), the second lens (220) and the third lens (230) to rotate.

7. The camera module according to claim 4, wherein the photosensitive chip (400) is arranged side by side with the first lens (210).

8. The camera module according to claim 3, wherein the driving mechanism (500) comprises a coil and a magnetic member which are oppositely arranged, one of the coil and the magnetic member is arranged on the lens (200), and the other is arranged on the housing (100).

9. The camera module according to claim 1, wherein the light incident surface (310) and the light emitting surface (320) are coplanar.

10. An electronic device, comprising the camera module of any one of claims 1-9.