CN114488483A

CN114488483A - Camera module and electronic equipment

Info

Publication number: CN114488483A
Application number: CN202210096335.2A
Authority: CN
Inventors: 余爱翔
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-01-26
Filing date: 2022-01-26
Publication date: 2022-05-13
Also published as: WO2023142811A1

Abstract

The application provides a camera module and electronic equipment. The camera module includes: a lens for passing light; the functional mirror is used for receiving the light rays from the lens and enabling the light rays to be subjected to total reflection at least twice, and the total propagation stroke L0 of the light rays in the functional mirror meets the following conditions: l0 is greater than L1+ L2, wherein L1 is the propagation travel of the incident light of the functional mirror in the functional mirror, and L2 is the propagation travel of the emergent light of the functional mirror in the functional mirror; and the photosensitive chip is used for receiving the light emitted by the functional mirror and converting the optical signal into an electric signal. Under the condition of realizing the same multiplying power, the length of the camera module provided by the application is shorter than that of the related art.

Description

Camera module and electronic equipment

Technical Field

The application relates to the technical field of cameras, in particular to a camera module and electronic equipment.

Background

In the related art, if the magnification of the camera needs to be improved, the lens needs to be designed to be long enough, which results in an overlong length of the camera module, and further increases the occupied volume of the electronic device, which is not beneficial to the setting of other electronic components.

Disclosure of Invention

The application provides a camera module and electronic equipment, under the condition that realizes the same multiplying power, the length of the camera module that this application provided is shorter than in correlation technique.

In a first aspect, the present application provides a camera module, the camera module includes:

a lens for passing light;

the functional mirror is used for receiving the light rays from the lens and enabling the light rays to be subjected to total reflection at least twice, and the total propagation stroke L0 of the light rays in the functional mirror meets the following conditions: l0 is greater than L1+ L2, wherein L1 is the propagation travel of the incident light of the functional mirror in the functional mirror, and L2 is the propagation travel of the emergent light of the functional mirror in the functional mirror; and

and the photosensitive chip is used for receiving the light emitted by the functional mirror and converting the optical signal into an electric signal.

In a second aspect, the present application further provides an electronic device, which includes the above camera module.

The application provides a camera module has set up the function mirror, the in-process that propagates to photosensitive chip from the camera lens when light will pass through the function mirror, the function mirror can make light take place twice total reflection at least, thereby formed the light propagation path who has twice buckling, the propagation path who buckles means that light is not propagated along same direction all the time, thereby can increase the propagation stroke of light, that is to say, can form great light propagation path in the function mirror, make the propagation stroke of light in the function mirror be greater than the thickness of function mirror. Therefore, compare in correlation technique, under the condition of realizing the same multiplying power, this application need not be with the longer of camera lens design, promptly, uses the structural style that this application provided to can shorten the length of camera module to can reduce the occupation volume of camera module in electronic equipment.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic view of a camera module according to an embodiment of the present application.

Fig. 2 is a schematic diagram of a functional mirror according to an embodiment of the present application.

Fig. 3 is a schematic view of a camera module according to another embodiment of the present application.

Fig. 4 is a schematic view of a camera module according to another embodiment of the present application.

Fig. 5 is a schematic view of a camera module according to another embodiment of the present application.

Fig. 6 is a schematic view of a camera module according to another embodiment of the present application.

Fig. 7 is a schematic view of a camera module according to another embodiment of the present application.

Fig. 8 is a schematic view of a functional mirror provided in another embodiment of the present application.

Fig. 9 is a schematic view of a camera module according to another embodiment of the present application.

Fig. 10 is an electronic device provided in an embodiment of the present application.

Fig. 11 is a cross-sectional view of the electronic device shown in fig. 10 taken along line a-a.

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 only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are within the scope of the present disclosure.

Reference herein to "an embodiment" or "an implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment or implementation can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1, the present application provides a camera module 10, where the camera module 10 includes: a lens 110, a functional mirror 120 and a photosensitive chip 130. The lens 110 is used for converging and passing light. The functional mirror 120 is used for receiving the light from the lens 110 and making the light undergo at least two total reflections. The total travel distance L0 of the light in the functional mirror 120 satisfies: l0 > L1+ L2. Wherein L1 is the travel distance of the incident light of the functional mirror 120 in the functional mirror 120. L2 is the travel distance of the outgoing light ray of the functional mirror 120 within the functional mirror 120. The light sensing chip 130 is used for receiving the light emitted from the functional mirror 120 and converting an optical signal into an electrical signal.

The lens 110 may include a lens and a lens barrel, and the lens may be disposed in the lens barrel and may transmit light. The number of lenses can be, but is not limited to, 2, 3, 5, 7, etc. The lens may be a spherical lens, an aspherical lens, or the like in terms of type. The lens may be a plastic lens, a glass lens, or the like, in terms of material.

The light emitted from the lens 110 enters the functional mirror 120, and the light is totally reflected in the functional mirror 120 for a plurality of times, where the number of times is greater than or equal to two times, and specifically may be 2 times, 3 times, 4 times, 5 times, 6 times, 8 times, and the like. Herein, total reflection is also called total internal reflection, which means that when a light enters a medium (optically dense medium) with a lower refractive index from a medium (optically sparse medium) with a higher refractive index, if the incident angle is larger than a certain critical angle θ c (the light is far from the normal), the refracted light will disappear, and all the incident light will be reflected and will not enter the medium with a lower refractive index. For the present application, the refractive index of the functional mirror 120 is greater than that of air.

The light rays propagating within the functional mirror 120 can be classified into three categories: an incident light ray, a reflected light ray and an emergent light ray, wherein the incident light ray of the functional mirror 120 refers to a light ray before undergoing a first reflection, in other words, a light ray which has been incident into the functional mirror 120 and has not undergone reflection; the emergent light of the functional mirror 120 is the light which is about to be emitted out of the functional mirror 120 after the last reflection; the light rays other than the incident light rays and the emergent light rays are reflected light rays. The propagation paths of the incident light, the reflected light and the emergent light of the functional mirror 120 are all larger than zero, so that the above-mentioned L0 > L1+ L2 is satisfied. Therefore, the propagation path of the light in the functional mirror 120 is greater than the thickness of the functional mirror 120 (the size of the functional mirror 120 in the incident light direction), that is, the light propagation path with a larger path is constrained in the functional mirror 120, so that the Effective Focal Length (EFL) of the camera module 10 is increased, thereby increasing the magnification of the camera module 10.

In the related art, if the magnification of the camera needs to be increased, the lens 110 needs to be designed to be long enough, which results in an excessively long length of the camera module 10, and further increases the occupied volume in the electronic device 1, which is not favorable for the arrangement of other electronic components.

The camera module 10 that this application provided has set up the function mirror 120, propagate to the in-process of light sensing chip 130 from camera lens 110 when light will pass through function mirror 120, function mirror 120 can make light take place twice total reflection at least, thereby formed the light propagation path who has twice buckling, the propagation path who buckles means light does not propagate along same direction all the time, thereby can increase the propagation stroke of light, that is to say, can form great light propagation path in the function mirror 120, make the propagation stroke of light in function mirror 120 be greater than the thickness of function mirror 120. Therefore, compared with the related art, the lens 110 does not need to be designed to be longer under the condition of realizing the same magnification, that is, the length of the camera module 10 can be shortened by applying the structural form provided by the present application. Taking the camera specification of 10M, 1/3 ″ and 10 times optical zoom as an example, if the design is performed according to the scheme in the related art, the length of the camera module 10 will reach 39mm, and by adopting the technical scheme design provided by the present application, the length of the camera module 10 can be made 21mm, and compared with the related art, the length is reduced from 39mm to 21mm, and the benefit is very considerable.

Further, referring to fig. 1 and fig. 2, the functional mirror 120 includes a first prism 121, and the first prism 121 may be made of glass, plastic, or the like. The first prism 121 includes a first surface M1, a second surface M2, and a third surface M3. The second surface M2 and the third surface M3 face each other. The opposite ends of the first surface M1 are respectively connected to the second surface M2 and the third surface M3 in a bending manner. The first surface M1 is used for receiving light from the lens 110. The second surface M2 and the third surface M3 totally reflect the light in turn, and the light reflected by the third surface M3 exits the first prism 121. In other words, the light ray entering the first prism 121 through the first surface M1 is totally reflected for the first time when the light ray reaches the second surface M2, the light ray reflected by the second surface M2 is reflected to the third surface M3, and the light ray reaches the third surface M3 is totally reflected for the second time, and then the light ray exits the first prism 121. It can be understood that since the light is totally reflected twice in the first prism 121, a propagation path with two bends is formed, so that the effective focal length can be increased, and an advantage is provided for achieving reduction of the length dimension of the camera module 10.

Further, referring to fig. 1 and fig. 2, the functional mirror 120 further includes a second prism 122, and the second prism 122 may be made of glass, plastic, or other materials. The second prism 122 includes a fourth surface M4, a fifth surface M5, a first top surface M6, and a second top surface M7. The first top M6 and the second top M7 form a roof-shaped form together, and the first top M6 and the second top M7 both face the fourth surface M4 in an inclined manner. The fourth surface M4 faces the second surface M2. The light reflected by the third surface M3 is emitted from the second surface M2. The fourth surface M4 is used for receiving the light emitted from the second surface M2. The fifth surface M5, the first top surface M6, the second top surface M7 and the fourth surface M4 totally reflect light in sequence, and the light reflected by the fourth surface M4 exits from the fifth surface M5.

In other words, the light in the first prism 121 is emitted from the second surface M2, and since the fourth surface M4 is disposed opposite to the second surface M2, the light emitted from the second surface M2 enters the second prism 122 from the fourth surface M4 and is emitted to the fifth surface M5. The first total reflection occurs when the light reaches the fifth surface M5, and the light reflected by the fifth surface M5 is emitted toward the first top surface M6. When the light reaches the first top surface M6, a second total reflection occurs, and the light reflected by the first top surface M6 is emitted toward the second top surface M7. The third total reflection occurs when the light reaches the second top surface M7, and the light reflected by the second top surface M7 is directed to the fourth surface M4. The fourth total reflection occurs when the light reaches the fourth surface M4, and the light reflected by the fourth surface M4 is directed to the fifth surface M5. Subsequently, the light will exit the second prism 122 from the fifth surface M5. It can be understood that, in the present embodiment, since the light is totally reflected in the second prism 122 four times, so as to form a propagation path with four bends, and in addition to the first prism 121, the light propagating in the functional mirror 120 can totally be totally reflected 6 times, so as to form a propagation path with 6 bends, so that the effective focal length is greatly increased, and an advantage is provided for reducing the length size of the camera module 10.

The functional mirror 120 composed of the first prism 121 and the second prism 122 may be a Pechan prism (Pechan prism). Of course, in other embodiments, the functional mirror 120 may be other types of optical elements capable of performing total reflection on light.

Further, the second surface M2 and the fourth surface M4 are spaced apart from each other, so that the total reflection of the light from the second top surface M7 at the fourth surface M4 can be ensured. The description is made at a reverse angle: if the second surface M2 contacts the fourth surface M4, when the light reflected by the second top surface M7 reaches the fourth surface M4, part of the light will directly pass through the fourth surface M4 and the second surface M2 to enter the first prism 121 (i.e. part of the light enters the optically denser medium from the optically denser medium), so that the part of the light cannot travel along the correct path. The fourth surface M4 and the second surface M2 are spaced, so that air is filled between the fourth surface M4 and the second surface M2, the air is a light-sparse medium, and the second prism 122 is a light-dense medium, so that total reflection of light on the fourth surface M4 can be ensured.

For the first surface M1, the light from the lens 110 will be directed to the first surface M1 of the first prism 121, and when the light reaches the first surface M1, most of the light will pass through the first surface M1 and enter the first prism 121, and a small part of the light will be reflected by the first surface M1 and fail to enter the first prism 121. Optionally, the average value R of the reflectivity of the first surface M1 for light with a wavelength range of 425nm to 675nm is less than 0.4%, and since the average value R of the reflectivity is small, most of the light can enter the first prism 121 through the first surface M1, and the light sensing chip 130 can receive sufficient light, thereby facilitating imaging.

For the fifth surface M5, the light in the second prism 122 will be emitted to the fifth surface M5 after the last reflection, when the light reaches the fifth surface M5, most of the light will pass through the fifth surface M5 to the outside of the second prism 122, and a small part of the light will be reflected by the fifth surface M5 and remain in the second prism 122. Optionally, the average value R of the reflectivity of the fifth surface M5 for light with a wavelength range of 425nm to 675nm is less than 0.4%, and similarly, since the average value R of the reflectivity is small, most of the light reflected by the fourth surface M4 can pass through the fifth surface M5 and reach the outside of the second prism 122, and the photosensitive chip 130 can receive sufficient light, thereby facilitating imaging.

Note that both the first surface M1 and the fifth surface M5 satisfy the above condition, or either one of them satisfies the above condition.

As can be seen from the foregoing description, the second surface M2, the third surface M3, the fourth surface M4, the fifth surface M5, the first top surface M6 and the second top surface M7 are all reflective to light. When the functional mirror 120 is an anhidrotic prism, the average reflectivity values of the second surface M2, the third surface M3, the fourth surface M4 and the fifth surface M5 can all be close to 100%, and the average reflectivity values of the first top surface M6 and the second top surface M7 are slightly lower. Optionally, the average value R of the reflectivity of at least one of the first top surface M6 and the second top surface M7 to light with a wavelength ranging from 400nm to 700nm is greater than 85%, so that loss of light is avoided as much as possible, and the imaging quality of the photosensitive chip 130 is ensured. Note that both the first top surface M6 and the second top surface M7 satisfy the above conditions, or either one of them satisfies the above conditions.

Optionally, at least one of the first surface M1 and the fifth surface M5 is provided with an antireflection film, and the antireflection film is used for increasing the transmittance of light. If the first surface M1 is provided with an antireflection film, most of light can enter the first prism 121 through the first surface M1, and the light sensing chip 130 can receive sufficient light, thereby facilitating imaging. If the second surface M2 is provided with an antireflection film, most of the light reflected by the fourth surface M4 can pass through the fifth surface M5 to reach the outside of the second prism 122, and the light sensing chip 130 can receive sufficient light, thereby facilitating imaging. Note that, the first surface M1 and the fifth surface M5 may be provided with an antireflection film, or one of the first surface M1 and the fifth surface M5 may be provided with an antireflection film.

Optionally, at least one of the second surface M2, the third surface M3, the fourth surface M4, the fifth surface M5, the first top surface M6, and the second top surface M7 is provided with a metal plating film, and the metal plating film is used to increase the reflectivity of light. That is to say, the surfaces of the first prism 121 and the second prism 122 that can reflect light are provided with metal coatings, so as to improve the reflectivity of the surfaces to light, so that the light can be smoothly transmitted to the photosensitive chip 130 as much as possible, and the photosensitive chip 130 can receive sufficient light, thereby facilitating imaging. It should be noted that, antireflection films may be disposed on the second surface M2, the third surface M3, the fourth surface M4, the fifth surface M5, the first top surface M6, and the second top surface M7, or an antireflection film may be disposed on any one of the surfaces.

Optionally, the propagation directions of the incident light and the outgoing light of the functional mirror 120 are the same, that is, the propagation directions of the incident light and the outgoing light are parallel, so that it is ensured that the photosensitive chip 130 receives enough light. If the propagation direction of the emergent light is inclined with respect to the incident light, a part of the light may deviate from the photosensitive chip 130, thereby affecting the image quality, and if the position of the photosensitive chip 130 is changed, the design and production costs will be increased.

Optionally, referring to fig. 3, the lens 110 is disposed opposite to the functional mirror 120, that is, the emergent light of the lens 110 is parallel to the incident light of the functional mirror 120, so that the relative position relationship between the lens 110 and the functional mirror 120 is the simplest, and the manufacturing cost can be reduced. In addition, the light emitted from the lens 110 can directly enter the functional mirror 120, so that the light loss can be avoided.

Optionally, referring to fig. 1, the camera module 10 further includes a first reflector 140. The first reflecting member 140 may be, but is not limited to, a triangular prism (as shown in fig. 1) or a flat mirror. The first reflecting member 140 is disposed opposite to the lens 110. The first reflector 140 is used for reflecting the light from the lens 110 to the functional mirror 120. That is, the light emitted from the lens 110 will be changed in propagation direction by the first reflector 140, and the camera module 10 of this type is also called a periscopic camera, which is beneficial to reduce the thickness of the electronic device 1 when the periscopic camera is applied to the electronic device 1. It should be noted that the first reflecting member 140 is only used for changing the overall propagation direction of the light and only one reflection occurs, and the functional mirror 120 is used for lengthening the propagation path of the light and at least two total reflections occur.

Optionally, referring to fig. 1, the camera module 10 further includes a second reflecting element 150, and the second reflecting element 150 may be, but is not limited to, a triangular prism or a plane mirror. The second reflecting member 150 faces both the functional mirror 120 and the photosensitive chip 130. The second reflector 150 is used for reflecting the light from the functional mirror 120 to the photosensitive chip 130. That is, the second reflector 150 is disposed between the functional mirror 120 and the photosensitive chip 130, and the light emitted from the functional mirror 120 is changed in propagation direction by the second reflector 150 and finally emitted to the photosensitive chip 130. In some cases, it may be inconvenient to arrange the photosensitive chip 130 due to special circumstances in the facing direction of the functional mirror 120, for example, the photosensitive chip 130 needs to be mounted on a circuit board in the camera module 10, however, the space in the facing direction of the functional mirror 120 is limited, and the circuit board cannot be placed. It can be understood that after the second reflecting member 150 is provided, the arrangement position of the photosensitive chip 130 can be changed, thereby meaning that the circuit board can be disposed in a region where the space is sufficient, and thus the above-mentioned problem can be avoided. It should be noted that the second reflecting member 150 can also be applied to the structure shown in fig. 3, and this application is only exemplarily illustrated in fig. 1, the second reflecting member 150 is disposed at an end of the functional mirror 120 away from the first reflecting member 140, the second reflecting member 150 is disposed opposite to the photosensitive chip 130, and the second reflecting member 150 is used for reflecting light from the functional mirror 120 to the photosensitive chip 130.

Optionally, referring to fig. 4 and 5, the lens 110 includes a first lens 111 and a second lens 112. The first lens 111 and the second lens 112 are opposite and spaced apart from each other. The first reflector 140 is disposed between the first lens 111 and the second lens 112. The first reflecting member 140 is rotatable to face any one of the first lens 111 and the second lens 112.

Specifically, the first lens 111 and the second lens 112 are used for converging light. The first reflecting member 140 may rotate with respect to the first lens 111 and the second lens 112. When the first reflection member 140 rotates to face the first lens 111, the first reflection member 140 reflects the light from the first lens 111 to the functional mirror 120, and the light is finally received by the photo sensor chip 130 after passing through the functional mirror 120. When the first reflecting member 140 rotates to face the second lens 112, the first reflecting member 140 reflects the light from the second lens 112 to the functional mirror 120, and the light is finally received by the photo sensor chip 130 after passing through the functional mirror 120. In other words, the photosensitive chip 130 can receive the light from the first lens 111 and the second lens 112, so as to share the photosensitive chip 130, when the camera module 10 of this embodiment is applied to the electronic device 1, it is equivalent to merge the front camera and the rear camera, so as to improve the integration level of the camera module 10, and under the condition that the front shooting and the rear shooting are guaranteed to have the same pixels, the cost of the camera module 10 can be reduced, the occupation of the internal space of the electronic device 1 can be reduced, and the thickness of the whole machine can be further reduced. And, the first lens 111 and the second lens 112 also share the functional mirror 120, so that both the front camera and the rear camera can realize ultra-high magnification.

Optionally, referring to fig. 6 and 7, the lens 110 includes a first lens 111 and a second lens 112. The first lens 111 and the second lens 112 are opposite and spaced apart from each other. The first reflector 140 is disposed between the first lens 111 and the second lens 112. The camera module 10 includes two function mirrors 120 arranged at intervals. The first reflecting member 140 is also located between the two functional mirrors 120. The first reflection member 140 is rotatable to face any one of the first lens 111 and the second lens 112. The photosensitive chip 130 includes a first chip 131 and a second chip 132. The first chip 131 is used for receiving light from one of the functional mirrors 120. The second chip 132 is used to receive light from another functional mirror 120. When the first reflecting member 140 rotates to face the first lens 111, the first reflecting member 140 reflects the light from the first lens 111 to the functional mirror 120, and the light is finally received by the first chip 131 after passing through the functional mirror 120. When the first reflection member 140 rotates to face the second lens 112, the first reflection member 140 reflects the light from the second lens 112 to another functional mirror 120, and the light is finally received by the second chip 132 after passing through the functional mirror 120. It can be understood that, when the camera module 10 of the present embodiment is applied to the electronic device 1, it is also equivalent to combine the front camera and the rear camera, so that the integration level of the camera module 10 can be improved.

Optionally, referring to fig. 8 and 9, the camera module 10 includes two functional mirrors 120, wherein one functional mirror 120 is configured to receive light from the lens 110, and the other functional mirror 120 is configured to receive light from the previous functional mirror 120 and transmit the light to the photosensitive chip 130. That is, the light ray will pass through the two functional mirrors 120 in sequence as it travels from the lens 110 to the photosensitive chip 130. When the functional mirror 120 is an anhidrotic prism, the light beam is totally reflected for a plurality of times, so that the image is vertically inverted, and the first top surface M6 and the second top surface M7 of the second prism 122 laterally invert the image, which together causes the image to rotate 180 ° (as shown in fig. 8). In this embodiment, since the two functional mirrors 120 are provided, the image can be rotated twice by 180 °, and thus the final image is a positive image. In addition, the two function mirrors 120 can increase the propagation distance of light, so that the camera module 10 has a larger magnification.

Further, referring to fig. 10, the electronic device 1 includes the camera module 10 described in any of the above embodiments. The camera module 10 refers to the description of the previous embodiments, and will not be described in detail herein. The electronic device 1 may be a mobile phone, a tablet computer, a notebook computer, a camera device, an ultra-mobile personal computer (UMPC), a wearable device (such as a smart watch, a bracelet, and a VR device), a television, a vehicle-mounted device, and an electronic reader. It should be noted that, in the embodiment of the present application, the electronic device 1 is merely used as a mobile phone for exemplary illustration, but the present application is not limited thereto.

Further, referring to fig. 10 and 11, the electronic device 1 includes a device body 20 and a camera module 10, where the device body 20 has a light-transmitting portion T. The lens 110 is disposed corresponding to the light-transmitting portion T. The camera module 10 has a first reflector 140 and a functional mirror 120. The first reflecting member 140 is disposed corresponding to the transparent portion T. The first reflector is used to reflect the light from the light-transmitting portion T to the functional mirror 120, that is, the camera module 10 is a periscopic camera. The length direction of the camera module 10 may be set along the length direction of the apparatus body 20, or may be set along the width direction of the apparatus body 20 (as shown in fig. 10), and of course, other setting forms also exist, which are not described herein any more.

The device body 20 refers to a main body portion of the electronic device 1, and the main body portion includes electronic components that implement main functions of the electronic device 1 and a housing that protects and supports the electronic components. Taking a mobile phone as an example (as shown in fig. 11), the device body 20 may include a display screen 210, a middle frame 220, and a battery cover 230, wherein the display screen 210 and the battery cover 230 are both connected to the middle frame 220 and disposed on two opposite sides of the middle frame 220.

It should be noted that, according to actual requirements, the camera module 10 may be disposed on any side of the electronic device 1, and the present application is not limited thereto. Taking a mobile phone as an example, the camera module 10 may be disposed on the front, back, and side of the mobile phone. The front side refers to a side of the mobile phone having the display screen 210; the back side refers to the side of the mobile phone having the battery cover 230; the side surface is the circumferential side of the middle frame 220 of the mobile phone. It is understood that the electronic device 1 may be of different types, and the definitions of the front, back, side, etc. may be different, and are not described in detail herein for other types of electronic devices 1.

Although embodiments of the present application have been shown and described, it is understood that the above embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiments without departing from the scope of the present application, and that such changes and modifications are also to be considered as within the scope of the present application.

Claims

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

a lens for passing light;

2. The camera module according to claim 1, wherein the functional mirror comprises a first prism, the first prism comprises a first surface, a second surface and a third surface, the first surface is used for receiving the light from the lens, the second surface and the third surface are sequentially used for totally reflecting the light, and the light reflected by the third surface exits the first prism.

3. The camera module according to claim 2, wherein the functional mirror further comprises a second prism, the second prism comprises a fourth surface, a fifth surface, a first top surface, and a second top surface, the fourth surface faces the second surface, the light reflected by the third surface exits from the second surface, the fourth surface is used for receiving the light exiting from the second surface, the fifth surface, the first top surface, the second top surface, and the fourth surface are sequentially used for totally reflecting the light, and the light reflected by the fourth surface exits from the fifth surface.

4. The camera module of claim 3, wherein the second surface and the fourth surface are spaced apart.

5. The camera module of claim 1, wherein the lens is disposed opposite the functional mirror.

6. The camera module of claim 1, further comprising a first reflector disposed opposite the lens, the first reflector configured to reflect light from the lens to the function mirror.

7. The camera module according to claim 5 or 6, further comprising a second reflector facing both the functional mirror and the photosensitive chip, wherein the second reflector is configured to reflect light from the functional mirror to the photosensitive chip.

8. The camera module according to claim 6, wherein the lens includes a first lens and a second lens, the first lens and the second lens are disposed opposite and spaced apart, the first reflecting member is disposed between the first lens and the second lens, and the first reflecting member is rotatable to face any one of the first lens and the second lens.

9. The camera module of claim 3, wherein at least one of the first surface and the fifth surface has an average reflectance value R < 0.4% for light having a wavelength in a range of 425nm to 675 nm.

10. The camera module of claim 3, wherein at least one of the first top surface and the second top surface has an average value R > 85% of reflectivity for light having a wavelength in the range of 400nm-700 nm.

11. The camera module according to claim 3, wherein at least one of the first surface and the fifth surface is provided with an antireflection film for increasing a transmittance of light.

12. The camera module of claim 3, wherein at least one of the second surface, the third surface, the fourth surface, the fifth surface, the first top surface, and the second top surface is provided with a metal coating for increasing the reflectivity of light.

13. The camera module according to claim 1, wherein the functional mirror has the same direction of propagation of the incident light and the outgoing light.

14. The camera module according to claim 1, wherein the camera module comprises two functional mirrors, one of the functional mirrors is configured to receive light from the lens, and the other functional mirror is configured to receive light from the previous functional mirror and transmit the light to the photo sensor chip.

15. An electronic device, characterized in that the electronic device comprises a camera module according to any one of claims 1-14.

16. The electronic device according to claim 15, wherein the electronic device includes a device body and a camera module, the device body has a light-transmitting portion, the camera module has a first reflector and a functional mirror, the first reflector is disposed corresponding to the light-transmitting portion, and the first reflector is configured to reflect light from the light-transmitting portion to the functional mirror.