CN111405157A

CN111405157A - Camera module and electronic equipment

Info

Publication number: CN111405157A
Application number: CN202010210960.6A
Authority: CN
Inventors: 陈伟
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-03-24
Filing date: 2020-03-24
Publication date: 2020-07-10
Anticipated expiration: 2040-03-24
Also published as: WO2021190186A1; CN111405157B

Abstract

The application discloses module and electronic equipment make a video recording, include: at least one lens; the photosensitive assembly is used for sensing light rays passing through the lens; the driving device can drive the photosensitive assembly to move towards the direction close to or away from the lens so as to adjust the focal length of the camera module. This application sets up the drive arrangement that can drive photosensitive assembly and remove in the module of making a video recording, changes its and the lens distance between the removal through photosensitive assembly, can realize the zoom function of the module of making a video recording. Because the weight of the photosensitive assembly is far less than that of the lens, the requirement on the driving force of the driving device is low. Under the same condition, the moving efficiency of the photosensitive assembly is high, and quick zooming is convenient to realize. Further, because the lens is motionless, the visual field opening of the camera module can be kept in a smaller size, so that the normal imaging requirement can be met, the occupied space in the electronic equipment is small, the arrangement of other components or assemblies is facilitated, and the design and installation costs are lower.

Description

Camera module and electronic equipment

Technical Field

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

Background

With the development of science and technology and the continuous progress of the economic level of people, various electronic devices are full of life of people. Among them, portable electronic devices having features of being miniaturized and lightweight are becoming more popular, and therefore, it is also necessary to achieve miniaturization and lightweight of imaging modules used for them in synchronization.

However, the electronic device in the related art realizes the zoom function by the movement of the lens group in the camera module. The disadvantage is that the weight of the lens group is relatively large, the power required for moving the lens group is large, the requirement on the power device is high, and the realization of quick zooming is not facilitated.

Disclosure of Invention

The application provides a module and electronic equipment make a video recording, required power when can reduce to zoom reduces the requirement to power device, and further reduction field of view open-ended size is convenient for the setting of other parts.

According to a first aspect of the present application, there is provided a camera module comprising:

at least one lens;

the photosensitive assembly is used for sensing light rays passing through the lens;

the driving device can drive the photosensitive assembly to move towards the direction close to or away from the lens so as to adjust the focal length of the camera module.

According to some embodiments, the driving device drives the photosensitive assembly to move along a direction parallel to the optical axis of the lens.

According to some embodiments, the photosensitive assembly includes a photosensitive chip and a circuit board, the photosensitive chip is fixed on the circuit board and electrically connected with the circuit board;

the light sensing chip comprises a light sensing surface, light rays penetrating through the lens irradiate the light sensing surface, and the driving device is connected with the circuit board to drive the light sensing chip to move.

According to some embodiments, further comprising:

the lens barrel is internally provided with a lens;

the driving device comprises a stator and a rotor coupled with the stator, the stator is fixedly connected with the lens cone, and the rotor is connected with the photosensitive assembly to drive the photosensitive assembly to move.

According to some embodiments, the stator is disposed inside the lens barrel and fixedly connected to an inner circumferential wall surface of the lens barrel.

According to some embodiments, the stator encloses an annular accommodating cavity, and the mover is disposed in the annular accommodating cavity and movably connected to the inner peripheral wall of the lens barrel.

According to some embodiments, the inner circumferential wall of the lens barrel is provided with a limiting portion protruding towards the annular accommodating cavity, and the limiting portion is located on the moving stroke of the mover to prevent the mover from being separated from the annular accommodating cavity.

According to some embodiments, the mover includes a coil disposed around the annular accommodation chamber;

when the coil is electrified, the magnetic field generated by the stator can drive the rotor to move in the annular accommodating cavity.

According to some embodiments, the stator is a permanent magnet or an electromagnet.

According to some embodiments, further comprising:

one end of the support is fixedly connected with the rotor, a first opening is formed in one end of the support fixedly connected with the rotor, and the other end of the support is fixedly connected with the surface of the circuit board;

the support and the circuit board jointly define a first accommodating cavity, the first opening is communicated with the first accommodating cavity, the photosensitive chip is arranged in the first accommodating cavity, and light rays penetrating through the lens penetrate through the first opening to irradiate to the photosensitive surface.

According to some embodiments, further comprising:

the light filtering piece is arranged at the position of the first opening.

According to some embodiments, the bracket is provided with a boss extending in the center direction of the first opening at the first opening, and the filter is fixedly arranged on the boss.

According to a second aspect of the present application, there is provided an electronic device comprising:

the shell is provided with a second opening, the shell defines a second accommodating cavity, and the second opening is communicated with the second accommodating cavity;

like the module of making a video recording above, the module of making a video recording is located the second and is held the intracavity, and outside light passes the second opening and shines to the lens.

According to some embodiments, further comprising:

the flexible circuit board is provided with a fixed section and a bent section, the fixed section is fixedly connected with the shell, the bent section is fixedly connected with the photosensitive assembly, and the bent section can change the bent angle along with the movement of the photosensitive assembly.

According to some embodiments, further comprising:

and the protection sheet is light-transmitting and covers the second opening.

The application provides a module and electronic equipment make a video recording, should make a video recording the module and include lens, photosensitive component and drive arrangement, but this drive arrangement drive photosensitive component to the direction removal of being close to or keeping away from the lens in order to adjust the focus of the module of making a video recording. This application sets up the drive arrangement that can drive photosensitive assembly and remove in the module of making a video recording, changes the distance between its and the lens through photosensitive assembly's removal, and the distance between lens and the photosensitive assembly is like the distance from, like the distance from changing, the focus of the module of making a video recording just changes thereupon, can realize the function of zooming of the module of making a video recording. Because the lens is motionless in this application, photosensitive assembly moves, and photosensitive assembly's weight is far less than the weight of lens, consequently, requires lowly to drive arrangement's drive power. Under the same condition, the moving efficiency of the photosensitive assembly is high, and quick zooming is convenient to realize. Further, because the lens is motionless, the visual field opening of the camera module can be kept in a smaller size, so that the normal imaging requirement can be met, the occupied space in the electronic equipment is small, the arrangement of other components or assemblies is facilitated, and the design and installation costs are lower.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or related technologies of the present application, the drawings needed to be used in the description of the embodiments or related technologies are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a structural sectional view of a camera module in a first state in the related art;

fig. 2 is a structural sectional view of a camera module in a second state according to the related art;

FIG. 3 is a schematic diagram of a position relationship between a lens group and a view field opening in a camera module according to the related art

Fig. 4 is a structural sectional view of the camera module in the first state in the embodiment of the present application;

fig. 5 is a structural sectional view of the camera module in the second state in the embodiment of the present application;

fig. 6 is a structural sectional view of a camera module in a first state according to another embodiment of the present disclosure;

fig. 7 is a structural sectional view of the camera module in an exploded state in the embodiment of the present application;

fig. 8 is a structural sectional view of an electronic apparatus in an embodiment of the present application in a first state;

fig. 9 is a structural sectional view of the electronic apparatus in the embodiment of the present application in a second state.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

Referring to fig. 1 and fig. 2, in the camera module 100 ' of the related art, the object distance and the image distance of the camera module 100 ' are changed by moving the lens group 110 ', so as to achieve zooming. From fig. 1 to fig. 2, the lens group 110 'moves in a direction away from the photosensitive element 120', the object distance u of the image capturing module 100 'decreases, the image distance v increases, and the focal length f of the image capturing module 100' satisfies the following relation according to the optical imaging principle: 1/f is 1/u +1/v, where u is the object distance of the camera module 100 'and v is the image distance of the camera module 100'. The lens group 110 'is adjusted to move to a suitable size, so that the focal length f of the camera module 100' can meet the use requirement. The disadvantage is that the weight of the lens assembly 110 'is relatively large, and the power required to move the lens assembly 110' is large, which requires a high power. And object distance u, image distance v change simultaneously, and one of them grow simultaneously and the other must reduce, need to balance the relation of change of object distance u, image distance v through adjusting many times for accurate zooming, is unfavorable for realizing fast zooming. Referring to fig. 3, the camera module 100 ' is provided with

view field openings

170a and 170b in cooperation with the lens assembly 110 ', and the field angle of the lens assembly 110 ' is fixed. In the process of zooming, when the lens group 110 ' moves in the direction away from the viewing opening 170a and the viewing opening 170b (in the figure, the distance from the viewing opening 170a to the lens group 110 ' is small, and the distance from the viewing opening 170b to the lens group 110 ' is large, the condition that the viewing opening 170a changes to the viewing opening 170b is equivalent to that the lens group 110 ' moves in the direction away from the viewing opening), the size of the viewing opening 170b is larger than that of the viewing opening 170a, and the normal imaging requirement of the camera module 100 ' can be met. Therefore, a larger size of the field opening 170b is required to be reserved in the electronic device in the related art to meet the overall imaging requirement. This occupies a large space in the electronic device, is not favorable for the arrangement of other components, and has high design and installation costs.

Referring to fig. 4 to fig. 7, in order to solve the above technical problem, an embodiment of the present invention provides a camera module 100, where the camera module 100 includes a lens 110, a photosensitive element 120, and a driving device 130. The lens 110 is made of an optically transparent material such as glass or resin, and has one or more curved surfaces, which can change the propagation direction of light, control the light distribution to converge the light, and finally form an image. The lens 110 may be divided into a convex lens and a concave lens according to the shape and function thereof, and the material, type, size, etc. of the lens 110 are not limited in this application. The number of lenses 110 in the camera module 100 is at least one. In order to make the image capturing module 100 have a plurality of different optical performances, the number of the lenses 110 is usually set to be a plurality, the lenses 110 may be stacked together, and the lenses 110 may be the same or different, which is not limited in this embodiment.

The photosensitive element 120 is used for sensing light passing through the lens 110. The photosensitive element 120 is a key component of the camera module 100 for imaging. As is well known to those skilled in the art, it can sense light passing through the lens 110, thereby generating an optical signal, and convert the optical signal into an electrical signal to be transmitted to other components or assemblies in the camera module 100 to finally generate an image. Therefore, the photosensitive element 120 and the lens 110 do not need to be in direct physical contact, as long as the photosensitive element 120 can directly or indirectly sense the light irradiated by the lens 110. For example, one of the surfaces of the photosensitive assembly 120 may be used as a sensing surface to be irradiated by the light projected from the lens 110. The size and type of the photosensitive assembly 120 are not limited, and the photosensitive assembly 120 with the above functions in the field meets the requirements.

The driving device 130 can drive the photosensitive assembly 120 to move toward or away from the lens 110. As the name implies, the driving device 130 is a device having power and capable of driving the photosensitive assembly 120 to move, the driving device 130 may be driven by electric power, internal combustion engine, magnetic force, etc., and the driving types common in the art all meet the use requirements. The driving device 130 and the photosensitive element 120 can be driven by only transmitting force. That is, the driving device 130 and the photosensitive element 120 may be directly connected to each other by a common method such as adhesion, contact, or screwing, or may be directly connected to each other without force transmission by a magnetic field or an electric field. The amount of power provided by the driving device 130 to the photosensitive assembly 120 is determined according to the amount of resistance to be overcome by the movement of the photosensitive assembly 120, and is not limited herein. The direction in which the driving device 130 drives the photosensitive element 120 to move is not limited to a specific direction, as long as the driving device can move closer to or away from the lens 110 to change the focal length f of the camera module 100. According to the optical imaging principle, the focal length f of the camera module 100 satisfies the following relation: 1/f is 1/u + 1/v. When the photosensitive element 120 moves toward the direction close to the lens 110, under the condition that other conditions are not changed, the object distance u is not changed, the image distance v is reduced, and the focal length f of the camera module 100 is reduced. When the photosensitive element 120 moves away from the lens 110, under the condition that other conditions are not changed, the object distance u is not changed, the image distance v is increased, and the focal length f of the camera module 100 is increased. Thereby, the adjustment of the focal length f of the camera module 100 can be realized.

The driving device 130 capable of driving the photosensitive assembly 120 to move is arranged in the camera module 100, the distance between the photosensitive assembly 120 and the lens 110 is changed through the movement of the photosensitive assembly 120, the distance between the lens 110 and the photosensitive assembly 120 is the image distance v, the image distance v is changed, the focal length f of the camera module 100 is changed accordingly, and the zooming function of the camera module 100 can be realized. Since the lens 110 is not moved, the photosensitive assembly 120 moves, and the weight of the photosensitive assembly 120 is much smaller than that of the lens 110, the requirement for the driving force of the driving device 130 is low. Under the same condition, the moving efficiency of the photosensitive assembly 120 is high, and quick zooming is convenient to realize. Moreover, since the lens 110 is fixed, the view field opening of the camera module 100 can be kept in a smaller size, which can meet the normal imaging requirement, the occupied space in the electronic device 10 is small, which is beneficial to the arrangement of other components or assemblies, and the design and installation costs are lower.

In order to improve the efficiency of changing the focal length f of the camera module 100 and to save the space inside the camera module 100, in one embodiment, the driving device 130 drives the photosensitive element 120 to move along the direction parallel to the optical axis 111 of the lens 110. The optical axis 111 is a line passing through the center of the lens 110 in the camera module 100, and no matter the lens 110 is a convex lens or a concave lens, the light irradiated to the lens 110 at the position of the optical axis 111 does not have a change in optical characteristics, i.e., the light continues to be emitted in the original direction. The driving device 130 drives the photosensitive element 120 to move along a direction parallel to the optical axis 111 of the lens 110, so that the image distance v of the camera module 100 changes by how much the photosensitive element 120 moves relative to the lens 110, and no component is generated in other directions. When the driving speed of the photosensitive assembly 120 by the driving device 130 is constant, the adjustment efficiency is the highest. Moreover, the photosensitive element 120 only occupies space in the moving direction, and no extra space occupation is generated, thereby saving the internal space of the camera module 100.

As described above, the photosensitive element 120 can receive the light passing through the lens 110, thereby generating an optical signal, and convert the optical signal into an electrical signal to be transmitted to other components or assemblies in the camera module 100, so as to finally generate an image. Specifically, in one embodiment, the photosensitive assembly 120 includes a photosensitive chip 121 and a circuit board 122. The light sensing chip 121 receives light passing through the lens 110, thereby generating an optical signal and converting the optical signal into an electrical signal. The circuit board 122 connects the photo sensor chip 121 with other components or assemblies in the camera module 100, and transmits the electrical signal in the photo sensor chip 121. The photosensitive chip 121 is fixed on the circuit board 122 and electrically connected to the circuit board 122, and the connection between the photosensitive chip 121 and the circuit board 122 may be various. For example, an adhesive layer may be disposed between the circuit board 122 and the photosensitive chip 121, and the photosensitive chip 121 may be adhered to the surface of the circuit board 122 by the adhesive layer. It is also possible to provide a connector on the photosensitive chip 121 and provide a mounting hole corresponding to the connector on the circuit board 122 to fix the photosensitive chip 121 to the surface of the circuit board 122. A mounting groove may be formed in the circuit board 122, and the photosensitive chip 121 may be fixed to a bottom wall or a side wall of the mounting groove by using an adhesive, so as to save space occupation in the thickness direction of the circuit board 122. The connection mode can be flexibly selected according to the actual structural characteristics.

The light-sensing chip 121 includes a light-sensing surface 1211. The photosensitive surface 1211 is one of the surfaces of the photosensitive chip 121, and a photosensitive material is disposed on the surface by coating or mixing, and the photosensitive material can generate a specific change under the irradiation of light to generate an optical signal and convert the optical signal into an electrical signal. The light passing through the lens 110 irradiates the light sensing surface 1211 to realize the imaging function of the camera module 100. Since the photosensitive chip 121 is fixed on the circuit board 122, the driving device 130 only needs to be connected to the circuit board 122 to drive the circuit board 122 to move and simultaneously drive the photosensitive chip 121 to move. Therefore, the photosensitive chip 121 can be prevented from being damaged due to the direct connection with the driving device 130, and the photosensitive chip 121 is protected to a certain extent. Moreover, the connection between the driving device 130 and the circuit board 122 is relatively simple and convenient, and common connection modes such as bonding, abutting, screwing and the like can be adopted, which is beneficial to improving the processing and assembling efficiency of the camera module 100.

In order to fix the lens 110 and protect the lens 110, in an embodiment, the camera module 100 further includes a lens barrel 140, and the lens 110 is disposed in the lens barrel 140 to cooperate with other components of the camera module 100, such as the photosensitive element 120, to realize an imaging function. The installation position and installation manner of the lens 110 in the lens barrel 140 are not limited, and can be flexibly adjusted according to different shooting requirements. Meanwhile, in order to drive the movement of the photosensitive assembly 120 with higher accuracy and efficiency, the driving device 130 includes a stator 131 and a mover 132 coupled to the stator 131. As the name implies, the stator 131 is a stationary part of the driving device 130, and the mover 132 is a moving part of the driving device 130, and the stator 131 and the mover 132 are coupled by a coupling arrangement. The coupled arrangement means that there is no mechanical connection between the mover 132 and the stator 131, but a certain gap is provided, and force transmission is achieved by the action of a magnetic field, an electric field, or the like. This way, the force transmission between the mover 132 and the stator 131 is more precise and efficient, the magnitude or direction of the force can be changed in a short time, and the use is convenient. The stator 131 is fixedly connected to the lens barrel 140, and the mover 132 is connected to the photosensitive assembly 120, so that when the mover 132 moves relative to the stator 131, the mover 132 can drive the photosensitive assembly 120 to move relative to the lens barrel 140, and the lens 110 is fixedly disposed in the lens barrel 140, so that the photosensitive assembly 120 moves relative to the lens 110, and the focal length f of the camera module 100 is adjusted.

In one embodiment, the driving device 130 may be a voice coil motor, which is a device for converting electric energy into mechanical energy and realizes linear and limited swing angle movement. Because the voice coil motor is a non-commutation type power device, the positioning accuracy is completely dependent on the feedback and control system, and is independent of the voice coil motor. By adopting a proper positioning feedback and induction device, the positioning precision and the acceleration of the voice coil motor can reach a very high state, and the zoom precision and the zoom speed of the camera module 100 can be improved. As described above, the stator 131 is a stationary portion of the voice coil motor, and the stator 131 is disposed in the lens barrel 140 and is fixedly connected to the inner peripheral wall 141 of the lens barrel 140. Since the lens barrel 140 is generally a hollow cylinder, a surface wall of the cylinder facing the center of the hollow portion is an inner circumferential wall 141 of the lens barrel 140. And the stator 131 is disposed on the inner circumferential wall 141 of the lens barrel 140 and faces the inside of the lens barrel 140.

The mover 132 is a moving part of the voice coil motor, and in order to facilitate connection between the mover 132 and the stator 131, the stator 131 encloses an annular accommodating cavity 133 so as to sleeve the mover 132. The size of the annular receiving chamber 133 is determined according to the size of the mover 132 and the displacement of the mover 132 relative to the stator 131 that needs to be moved. It should be noted that, during the movement of the mover 132, the mover 132 is not always completely kept in the annular accommodating cavity 133, and only a part of the mover 132 needs to be in the annular accommodating cavity 133 to receive the driving force of the stator 131 and move relative to the stator 131. In order to set a certain limit to the displacement of the mover 132 so as to prevent the mover 132 from being separated from the lens barrel 140, the mover 132 is disposed in the annular accommodating chamber 133 and movably connected to the inner circumferential wall 141 of the lens barrel 140. Thus, the mover 132 applies a force to the lens barrel 140 without being separated from the lens barrel 140. In this embodiment, the upper and lower ends of the mover 132 may be connected to the inner circumferential wall 141 of the lens barrel 140 by using a plurality of elastic pieces, which have certain elasticity and can extend or shorten when the mover 132 moves, so as not to affect the movement of the mover 132 within the normal range, and at the same time, prevent the mover 132 from being separated from the lens barrel 140. As shown in fig. 4 to 5, the photosensitive element 120 of the camera module 100 moves away from the lens 110, and the elastic sheet deforms to a certain extent.

The elastic sheet can prevent the mover 132 from being separated from the lens barrel 140, but in order not to affect the normal movement of the mover 132, the elastic sheet cannot limit the mover 132, and therefore, in order to limit the mover 132 and enable the camera module 100 to zoom within a certain range, in an embodiment, referring to fig. 6, a limiting portion 142 is convexly disposed on the inner circumferential wall 141 of the lens barrel 140 toward the annular accommodating cavity 133. In the moving process of the mover 132, the position-limiting portion 142 may block the mover 132, so that the mover 132 cannot move beyond the position-limiting portion 142, and therefore, by reasonably adjusting the position relationship between the position-limiting portion 142 and the mover 132, the mover 132 may only move within a certain range, and thus the zoom effect of the camera module 100 is also within a certain and controllable range. The stoppers 142 may be provided at two different directional limit positions on the moving stroke of the mover 132, respectively, as needed. The material, size, shape and connection mode between the limiting portion 142 and the inner peripheral wall 141 of the lens barrel 140 can be flexibly adjusted according to different use conditions, and are not limited herein.

Since the operation principle of the vcm is to generate regular motion by using the interaction between the magnetic field and the magnetic poles in the magnetic field generated by the conductor of the energized coil 1321, in the present embodiment, the mover 132 of the vcm includes the coil 1321, the coil 1321 is disposed around the annular accommodating cavity 133 of the stator 131, and the stator 131 has a magnetic field around it. Thus, when the coil 1321 is energized, the coil 1321 of the mover 132 generates another magnetic field, and the interaction between the magnetic poles in the two different magnetic fields generates a driving force for the mover 132, and the mover 132 can move in the annular accommodating chamber 133 under the driving force. By changing the magnitude of the current flowing through the coil 1321, the magnitude of the driving force can be changed, and the speed of zooming the image pickup module 100 can be changed. The larger this driving force, the faster the mover 132 moves, and the faster the zoom of the camera module 100. Conversely, the smaller the driving force, the slower the mover 132 moves, and the slower the zoom of the camera module 100. By changing the positive and negative directions of the current supplied to the coil 1321, the direction of the driving force can be changed in the opposite direction, and the moving direction of the mover 132 can be changed. In the present embodiment, since the mover 132 generates the magnetic field through the coil 1321, the moving speed or direction of the mover 132 can be changed only by adjusting the magnitude or direction of the current in the coil 1321 of the mover 132, and therefore, the stator 131 can adopt a permanent magnet, so as to simplify the structure of the driving device 130 and reduce the installation difficulty thereof.

In addition, the mover 132 is further connected to the circuit board 122 to drive the photosensitive chip 121 to move when being matched with the stator 131, so that, in order to reduce the size of the mover 132 to reduce the processing difficulty of the mover 132 and the matching difficulty of the mover 132 and the stator 131, in an embodiment, the camera module 100 further includes a bracket 150, one end of the bracket 150 is fixedly connected to the mover 132, and the other end of the bracket 150 is fixedly connected to the surface of the circuit board 122. It can be seen that the support 150 plays a role of connection and transmission between the mover 132 and the circuit board 122, and the size, material, shape, etc. of the support 150 can be adjusted according to different situations during actual installation. In order to make the bracket 150 more firm and more stable in driving effect on the circuit board 122, in the embodiment, the bracket 150 is fixedly connected to the circuit board 122 in all directions, so that the bracket 150 and the circuit board 122 jointly define a first accommodating cavity 152, and the photosensitive chip 121 is disposed in the first accommodating cavity 152. Thus, the photosensitive chip 121 is located in the relatively closed space of the first accommodating cavity 152 in the camera module 100, and the photosensitive chip 121 can be protected to a certain extent. The size and shape of the first accommodating cavity 152 are determined according to the photosensitive chip 121, so as to protect the photosensitive chip 121 and reduce the occupation of the internal space of the camera module 100. On the basis, in order to enable the light passing through the lens 110 to irradiate onto the photosensitive surface 1211 of the photosensitive chip 121 without being blocked, a first opening 151 needs to be opened at one end of the bracket 150 fixedly connected with the mover 132, the first opening 151 is communicated with the first accommodating cavity 152, and the light passing through the lens 110 irradiates onto the photosensitive surface 1211 through the first opening 151. Thus, normal use of the photosensitive chip 121 is not affected. The size and shape of the first opening 151 may correspond to the photo sensor chip 121, so that the photo sensing surface 1211 of the photo sensor chip 121 is exposed under the lens 110 as much as possible, thereby improving the working efficiency of the photo sensor chip 121.

In one embodiment, in order to improve the imaging quality of the camera module 100 and avoid the interference of unwanted stray light, the camera module 100 further includes a light filter 160. The optical filter 160 is an optical element made of optical materials such as glass or resin, and the optical filter 160 can select a wavelength range of light irradiated onto the photo sensor chip 121, and the principle of the optical filter is to isolate light of a certain wavelength band and transmit light of other wavelength bands. Thus, by adjusting the range of the isolation wavelength band of the filter 160, it is possible to prevent some stray light from being irradiated onto the photosensitive surface 1211 of the photosensitive chip 121. The range of the wavelength bands to be isolated, as is well known to those skilled in the art, can be adjusted according to different imaging requirements. In the present embodiment, the filter 160 is disposed at the position of the first opening 151. Thus, the light passing through the lens 110 needs to pass through the filter 160 to reach the light-sensing surface 1211 while passing through the first opening 151. Just filter the parasitic light before the imaging of sensitization chip 121, promoted the imaging quality of module 100 of making a video recording effectively.

Similar to the connection between the photo chip 121 and the circuit board 122, there are various connection methods between the filter 160 and the first opening 151 of the bracket 150. For example, the filter 160 may be fixed to a top wall or a side wall of the first opening 151 using an adhesive to save a space occupied in the thickness direction of the first opening 151 of the bracket 150. In one embodiment, the bracket 150 may be further provided with a boss 153 at the first opening 151, and the boss 153 extends toward the center of the first opening 151. Thus, the filter member 160 can be directly fixed to the boss 153. Through the size to suitable numerical value that changes boss 153, can directly place filter 160 on boss 153 and need not to adopt any connection structure to this, can be under the prerequisite of avoiding filter 160 to drop, reduce the fixed mounting degree of difficulty of filter 160, the change of the filter 160 of also being convenient for simultaneously is in order to realize the different filtering demands of module 100 of making a video recording. In other embodiments, in order to enhance the fixing firmness of the optical filter 160, the optical filter 160 may be fixed by using a common connection manner such as gluing, abutting, screwing, and the like.

Referring to fig. 8 to 9, an embodiment of the present invention further provides an electronic device 10, where the electronic device 10 includes a housing 200 and the camera module 100 as described above. The electronic device 10 is any device having an image capturing function, and may be any one of wearable devices such as a mobile phone, a tablet computer, a notebook computer, a personal digital assistant, a smart band, and a smart watch, for example, and the camera module 100 cooperates with the electronic device 10 to capture and reproduce an image of a target object. In the electronic apparatus 10, in order to fix and house the camera module 100, the housing 200 defines a second housing chamber 220, and the camera module 100 is disposed in the second housing chamber 220. The housing 200 can fix and protect the camera module 100. The second accommodating cavity 220 needs to accommodate other components or assemblies of the electronic device 10 besides the camera module 100, and therefore, the size and shape of the second accommodating cavity 220 are different in different types of electronic devices 10, which is not limited herein.

In order to allow the external light to pass through the lens 110 and finally irradiate onto the photosensitive surface 1211 of the photosensitive chip 121 without being blocked, the housing 200 further has a second opening 210, and the second opening 210 is communicated with the second accommodating cavity 220, so that the external light can pass through the second opening 210 and enter the second accommodating cavity 220 to irradiate onto the lens 110 in the camera module 100 to cooperate with imaging. The electronic device 10 of this embodiment is provided with a driving device 130 capable of driving the photosensitive element 120 to move, and the distance between the photosensitive element 120 and the lens 110 is changed by the movement of the photosensitive element, so as to implement the zoom function of the camera module 100. The driving force demand on the driving device 130 is low. Under the same condition, the moving efficiency of the photosensitive assembly 120 is high, and quick zooming is convenient to realize. And the space occupation in the electronic equipment 10 is small, the arrangement of other parts or assemblies is facilitated, and the design and installation cost is low.

Since the photosensitive element 120 needs to be electrically connected to other components or assemblies in the electronic device 10 to transmit electrical signals and finally perform an imaging function, in order to avoid damage to the internal structure of the electronic device 10 caused by the movement of the photosensitive element 120 driving the other components or assemblies, in one embodiment, the electronic device 10 further includes a flexible circuit board 300, and the flexible circuit board 300 has a fixing section 310 and a bending section 320. The flexible printed Circuit board 300 (FPC) is a highly reliable and excellent flexible printed Circuit board made of polyimide or mylar as a base material. It has the characteristics of high wiring density, light weight, thin thickness and good bending property. Therefore, the fixing section 310 of the flexible circuit board 300 can be fixedly connected with the housing 200, and the bending section 320 can be fixedly connected with the photosensitive assembly 120. Thus, when the photosensitive element 120 is driven by the driving device 130 to move, the bending section 320 changes the bending angle along with the movement of the photosensitive element 120, so as to compensate the distance changed by the movement of the photosensitive element 120, so that other components or assemblies electrically connected with the photosensitive element 120 are not driven to move, and damage to the internal structure of the electronic device 10 is avoided. The fixed segment 310 is a portion of the flexible circuit board 300 that has low flexibility and is not easily bent, and the bent segment 320 is a portion of the flexible circuit board 300 that has high flexibility and is easily bent. The ratio of the fixed segment 310 to the bent segment 320 in the flexible circuit board 300 is not limited by a fixed value, and can be determined according to the degree of bending required. The bending section 320 can be set to be shorter if the degree of bending is small, and the bending section 320 can be set to be longer if the degree of bending is large. Moreover, the fixed section 310 and the bent section 320 may be integrated without any distinct boundary, and are distinguished only by the flexibility of the material. As shown in fig. 7 to 8, when the photosensitive element 120 of the camera module 100 moves away from the lens 110, the bending section 320 changes the bending angle correspondingly with the movement of the photosensitive element 120, so as to compensate the distance changed by the movement of the photosensitive element 120, and avoid damaging the internal structure of the electronic device 10.

In one embodiment, in order to prevent the second opening 210 from directly communicating with the outside and to prevent foreign matters such as external dust from entering the electronic device 10 and affecting its usability, the electronic device 10 further includes a protective sheet 400, and the protective sheet 400 covers the second opening 210. Thus, the protective sheet 400 can isolate the second opening 210 from the outside, and prevent foreign matters such as external dust from entering the electronic device 10 and affecting the use performance thereof. Meanwhile, in order not to affect the imaging function of the camera module 100, the protection sheet 400 cannot block the light irradiated to the camera module 100, and thus, the protection sheet 400 is transparent. That is, the protective sheet 400 needs to be made of a material that is permeable to light.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present application, it is to be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the above terms may be understood by those skilled in the art according to specific situations.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. The utility model provides a module of making a video recording which characterized in that includes:

at least one lens;

2. The camera module of claim 1,

the driving device drives the photosensitive assembly to move along the direction parallel to the optical axis of the lens.

3. The camera module of claim 1,

the photosensitive assembly comprises a photosensitive chip and a circuit board, and the photosensitive chip is fixed on the circuit board and electrically connected with the circuit board;

the photosensitive chip comprises a photosensitive surface, light rays penetrating through the lens irradiate to the photosensitive surface, and the driving device is connected with the circuit board to drive the photosensitive chip to move.

4. The camera module of claim 3, further comprising:

the lens barrel is arranged in the lens;

5. The camera module of claim 4,

the stator is arranged in the lens barrel and is fixedly connected with the inner peripheral wall surface of the lens barrel.

6. The camera module of claim 5,

the stator encloses and establishes the annular and holds the chamber, the active cell set up in the annular holds the intracavity and with the internal perisporium swing joint of lens-barrel.

7. The camera module of claim 6,

the inner peripheral wall of the lens barrel is convexly provided with a limiting part towards the annular accommodating cavity, and the limiting part is positioned on the moving stroke of the rotor to prevent the rotor from being separated from the annular accommodating cavity.

8. The camera module of claim 6,

the rotor comprises a coil which is arranged in the annular accommodating cavity in a surrounding manner;

9. The camera module of claim 8,

the stator is a permanent magnet or an electromagnet.

10. The camera module of claim 4, further comprising:

one end of the support is fixedly connected with the rotor, a first opening is formed in one end, fixedly connected with the rotor, of the support, and the other end of the support is fixedly connected with the surface of the circuit board;

the support with the circuit board prescribes a limit to first holding the chamber jointly, first opening with first holding the chamber intercommunication, sensitization chip is located first holding the intracavity, passes the light of lens passes first opening shines to the photosurface.

11. The camera module of claim 10, further comprising:

a filter disposed at the first opening.

12. The camera module of claim 11,

the bracket is provided with a boss extending towards the center direction of the first opening at the first opening, and the light filtering piece is fixedly arranged on the boss.

13. An electronic device, comprising:

a housing having a second opening, the housing defining a second receiving cavity, the second opening communicating with the second receiving cavity;

the camera module of any of claims 1-12, wherein the camera module is disposed in the second receiving cavity, and external light is irradiated to the lens through the second opening.

14. The electronic device of claim 13, further comprising:

the flexible circuit board is provided with a fixed section and a bending section, the fixed section is fixedly connected with the shell, the bending section is fixedly connected with the photosensitive assembly, and the bending section can change the bending angle along with the movement of the photosensitive assembly.

15. The electronic device of claim 13, further comprising:

a protective sheet, said protective sheet being light transmissive, and said protective sheet covering said second opening.