CN115209007A

CN115209007A - Camera module, electronic equipment and shooting method

Info

Publication number: CN115209007A
Application number: CN202110397393.4A
Authority: CN
Inventors: 刘伟; 王贤智; 李伟伟; 岳宝石
Original assignee: Oneplus Technology Shenzhen Co Ltd
Current assignee: Oneplus Technology Shenzhen Co Ltd
Priority date: 2021-04-12
Filing date: 2021-04-12
Publication date: 2022-10-18

Abstract

The application discloses a camera module, electronic equipment and a shooting method. The camera module comprises an image sensor, a variable lens and a long-focus lens component, wherein the variable lens and the long-focus lens component are sequentially arranged along the optical axis direction of the image sensor, and the lens in the long-focus lens component is used for realizing the focal length in a long-focus shooting mode; the variable lens deforms when electrified so as to change diopter, and the focal length of the camera module is reduced when shooting. The function of single camera can be richened to this application, especially can make single camera integrate these two kinds of functions of long burnt and microspur.

Description

Camera module, electronic equipment and shooting method

Technical Field

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

Background

Cameras have become important components of electronic devices such as mobile phones, and in order to meet the shooting requirements of users, camera modules of many electronic devices currently have multiple cameras, such as macro cameras, telephoto cameras, and super-wide angle cameras. For example, although the ultra-wide-angle camera and the telephoto camera have a zooming function, the detailed characteristics presented when macro shooting is performed are poor, and even the situation of missing picture details can occur; although the macro camera can well show detailed characteristics, the shooting distance is short, and the long-focus shooting function cannot be realized. Therefore, the current single camera has single function, and especially cannot integrate the macro function into other types of cameras.

Disclosure of Invention

The embodiment of the application provides a camera module, electronic equipment and a shooting method, and can solve the problem that the function of a single camera is single at present.

A first aspect of embodiments of the present application provides an image sensor, including: drive mechanism, variable lens, telephoto lens subassembly and image sensor. The variable lens and the long-focus lens component are arranged along the optical axis direction of the image sensor, and the driving mechanism is connected with the long-focus lens component and used for driving the lens in the long-focus lens component; the variable lens is used for generating deformation when electrified so as to change diopter, and reduces the focal length of the camera module when shooting.

Optionally, the variable lens includes a piezoelectric film, a light-transmitting film, and a deformable member sequentially arranged in an optical axis direction; the piezoelectric film is used for deforming after being influenced by an electric field and driving the light-transmitting film to deform, and the light-transmitting film is used for driving the deformable piece to deform when deforming.

Optionally, the variable lens further includes a light-transmitting substrate, the deformable member is disposed on the light-transmitting substrate, a first surface of the deformable member that deforms is not deformed, and the first surface is a surface of the deformable member attached to the light-transmitting substrate.

Optionally, the piezoelectric film is annular, and the piezoelectric film, the light-transmissive film and the deformable member have centers that coincide with each other in an orthogonal projection along the optical axis direction.

Optionally, the variable lens further comprises a pin, the pin being electrically connected to the piezoelectric film.

Optionally, the lens and the image sensor in the telephoto lens assembly are arranged along a first direction, the light penetrates through the variable lens along a second direction, the second direction is perpendicular to the first direction, and the camera module further includes: a prism and a transparent cover plate. The prism is arranged between the variable lens and the telephoto lens component and is used for deflecting the light transmitted through the variable lens to be transmitted along the first direction. The transparent cover plate covers and fixes the variable lens.

Optionally, the lens and the image sensor in the telephoto lens assembly are arranged along a first direction, light passes through the variable lens along the first direction, the camera module further includes a prism, the variable lens is disposed between the prism and the telephoto lens assembly, the prism is configured to deflect light in a second direction to be transmitted along the first direction, and the second direction is perpendicular to the first direction.

Optionally, the variable lens, the lens in the telephoto lens assembly, and the image sensor are arranged along the second direction, and the camera module further includes a transparent cover plate, the transparent cover plate covers the variable lens, and the variable lens is fixed to the transparent cover plate.

Optionally, the variable lens is disposed on a second surface of the transparent cover plate, where the second surface is a surface of the transparent cover plate facing the telephoto lens component; or the variable lens is embedded in the second side of the transparent cover plate, and the second side is the side of the transparent cover plate facing the telephoto lens component.

An electronic device provided by a second aspect of the embodiments of the present application includes any one of the camera modules described above.

In a shooting method provided in a third aspect of the embodiment of the present application, based on any one of the camera modules or the electronic device, the shooting method includes:

s1, driving a lens in a tele lens assembly by a driving mechanism to enable the tele lens assembly to have a first focal length, adjusting a variable lens to have a first diopter, and shooting a first object;

and S2, adjusting the variable lens to have a second diopter, and shooting a second object, wherein the distance between the second object and the tele lens assembly is smaller than the distance between the first object and the tele lens assembly, and the first diopter is smaller than the second diopter.

Optionally, the step S2 further includes: the driving mechanism drives the lens in the tele lens assembly to enable the tele lens assembly to have a second focal length, and the first focal length is larger than the second focal length; alternatively, the drive mechanism maintains the same position of the lens in the tele lens assembly as in step S1.

Optionally, the shooting method further includes: s3, displaying an image including the first object on a shooting interface of the camera module; s4, receiving and responding to an operation instruction, and selecting a preset area of a shooting interface; and S5, adjusting the variable lens to have a third diopter, wherein the third diopter is larger than the first diopter, and displaying the preset area on the shooting interface in a full screen mode after the preset area is enlarged.

Optionally, the piezoelectric film comprises: the four sub-electrodes are respectively arranged in four quadrants of the long-focus lens component, the four quadrants are four areas divided by a transverse axis and a longitudinal axis in a plane rectangular coordinate system, the plane where the plane rectangular coordinate system is located is vertical to the optical axis, and the origin is located on the optical axis; the shooting method further comprises: and S6, respectively controlling the voltages applied to the four sub-electrodes to control the deformation amount of the variable lens and deflect the light.

Optionally, the first refractive power is zero or negative and the second refractive power is positive.

The camera module and the electronic equipment provided by the application, and the shooting method are characterized in that the variable lens is arranged in front of the telephoto lens component along the optical axis direction of the image sensor, the diopter is changed through the deformation of the variable lens, and the lens in the telephoto lens component is driven, the shooting of objects at different distances is realized, the telephoto lens component can be used for shooting objects (first objects) at a far distance, when objects (second objects) at a near distance are shot, the diopter of the variable lens is changed, the imaging of the second objects can fall on an imaging surface, and the clear shooting of the second objects is realized.

For example, in some embodiments, when shooting the first object, the diopter of the variable lens when not powered is zero, and at this time, the variable lens is equivalent to a planar lens, and the telephoto shooting function can be realized by the telephoto lens assembly; when the second object is shot, the variable lens deforms when being electrified so as to change diopter into a positive value, the variable lens is equivalent to a convex lens at the moment, the focal length of the long-focus lens assembly is reduced by utilizing the light condensation function of the convex lens, and the micro-distance function during shooting can be realized, so that a single camera can be integrated into the long-focus micro-distance function, and the function of the single camera is enriched.

Drawings

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

FIG. 2 is a schematic view of an optical path of the camera module of the present application for performing tele photography;

fig. 3 is a schematic light path diagram of the camera module according to the present application for performing macro photography;

FIG. 4 is a schematic cross-sectional view of a variable lens of an embodiment of the present application when not energized;

FIG. 5 is a schematic cross-sectional view of the variable lens shown in FIG. 4 when energized;

FIG. 6 is a schematic perspective view of a variable lens according to an embodiment of the present application;

fig. 7 is a schematic flowchart of a photographing method for a long Jiao Weiju according to the first embodiment of the present application;

FIG. 8 is a schematic flow chart of a long Jiao Weiju photographing method according to a second embodiment of the present application;

fig. 9 is a schematic flow chart of a long Jiao Weiju photographing method according to a third embodiment of the present application;

FIG. 10 is a schematic illustration of an exemplary embodiment of an operator interface for selecting a predefined area;

FIG. 11 is a schematic illustration of an operator interface for another embodiment of selecting a predefined area according to the present application;

FIG. 12 is a schematic diagram of a piezoelectric film according to an embodiment of the present application;

fig. 13 is a sectional view of the structure when the camera module having the piezoelectric film shown in fig. 12 is energized;

FIG. 14 is a schematic structural diagram of a periscopic camera according to an embodiment of the present application;

FIG. 15 is a schematic view of an assembly of the variable lens and one embodiment of the transparent cover plate;

FIG. 16 is a schematic view of a periscopic camera according to another embodiment of the present application;

fig. 17 is a schematic structural diagram of an upright camera according to an embodiment of the present application.

Detailed Description

The function singleness of current single camera when shooing is considered, the structure of present camera module is changed to this application, combine together variable lens and long focus lens subassembly, on the basis of the existing long focus of long focus lens subassembly shooting function, change diopter through variable lens deformation, utilize variable lens (for example the spotlight function of its convex lens) to realize the macro function when shooing to this makes the integrated long focus of single camera and macro these two kinds of shooting functions, enriches the function of single camera.

In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below with reference to the embodiments and the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments, and not all embodiments. Based on the embodiments in the present application, the following respective embodiments and technical features thereof may be combined with each other without conflict.

It should be understood that in the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description of the respective embodiments of the present application, but do not indicate or imply that a device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

Referring to fig. 1, 2 and 3 together, a camera module 10 according to an embodiment of the present disclosure includes a variable lens 11, a telephoto lens assembly 12 and an image sensor 13.

The variable lens 11 and the telephoto lens assembly 12 are sequentially disposed in an optical axis O direction (e.g., a direction indicated by an arrow in fig. 1) of the image sensor 13, and are used to present an optical image of a photographic subject. The image sensor 13 is used to convert the light image into an electrical signal in proportional relation to the light image.

The tele lens assembly 12 includes a plurality of lenses, four of which are shown and the type of each lens, for exemplary purposes only. The lenses are arranged in sequence along a focusing axis O of the tele lens assembly 12, which coincides with the optical axis O of the image sensor 13 and is identified by the same reference numerals. These lenses are connected to a driving mechanism (not shown) for realizing a focal length in the telephoto photographing mode by being driven by the driving mechanism. The number and type of the lenses (for example, whether the lenses are convex lenses or concave lenses and the respective diopters) are adaptively set according to actual needs, and the embodiment of the present application is not limited. Further alternatively, the driving mechanism may be a lens driving motor.

The variable lens 11 is a lens whose shape is variable when power is applied, and is deformed to change diopter when power is applied. For example, the variable lens 11 has diopter of zero or negative value when not energized, and deforms to change diopter to positive value when energized. The variable lens 11 will be described below with reference to fig. 2 and 3, taking an example in which diopter is zero when not energized.

Fig. 2 shows a schematic imaging diagram in a tele photographing mode. As shown in fig. 2, the camera module 10 performs shooting on the object a, and the variable lens 11 is a planar lens in a natural state (i.e. when not powered), and at this time, the variable lens 11 has a first diopter of zero, and a path of light passing through the variable lens 11 is unchanged. It should be understood that although light is refracted when transmitted in different media, the path change caused by refraction is small, and in addition, the working principle of the variable lens 11 is also described for clarity, so that the embodiment of the present application does not consider the influence of refraction on the optical path, and the path of the light after passing through the plane lens is not changed. In addition, in fig. 2 and 3, the path of the light after passing through the tele lens assembly 12 is only shown by way of example, and in an actual scene, the light path is adapted according to the actual imaging.

The driving mechanism drives the lens in the tele lens assembly 12 to focus so as to shoot the first object a, after the focusing is completed, the focal point O2 is obtained, the distance between the focal point O2 and the optical center point O1 of the tele lens assembly 12 is the first focal length L1, the image a 'of the first object a falls on the imaging plane M, and the image a' is clearest at this time.

The distance between the second object B and the camera module 10 is smaller than the distance between the first object a and the camera module 10, and in the focusing scene based on the first focal length L1, the image B 'of the second object B falls behind (i.e. to the right as shown in fig. 2) the imaging plane M, and the image B' is unclear.

Fig. 3 shows a schematic imaging diagram in macro shooting mode. Referring to fig. 3, when the variable lens 11 is powered on and deformed to change the first diopter to the second diopter, the first diopter is smaller than the second diopter, and in a scene where the diopter is changed from zero to a positive value, the variable lens 11 is a convex lens for converging light, if the second object B is to be imaged on the imaging plane M, that is, the image B ' falls on the imaging plane M, the focal point O2 to be focused is far away from the imaging plane M, that is, the focal distance (referred to as a second focal distance) L2 to be obtained is smaller, that is, L2 is smaller than L1, and the image B ' of the second object B falls on the imaging plane M, where the image B ' is clearest.

The image sensor 13 obtains the clearest image B 'and the clearest image a' respectively, and converts the optical images into electrical signals in corresponding proportion to the optical images respectively, and the electronic device having the camera module 10 can obtain a clear image according to the electrical signals.

Therefore, the camera module 10 is additionally provided with the variable lens 11 on the basis of the existing long-focus lens assembly 12, and the single camera can be integrated with a long-focus shooting function and a macro shooting function through mutual matching of the variable lens 11 and the long-focus lens assembly, so that the functions of the single camera are enriched.

In one implementation, the variable lens 11 may have an inverse piezoelectric effect, i.e., the amount of deformation (i.e., diopter) of the variable lens 11 is in direct proportion to the voltage applied to the variable lens 11, i.e., the diopter of the variable lens 11 becomes larger as the voltage increases; and as the voltage decreases, the diopter of the variable lens 11 becomes smaller. Herein, when focusing in the macro photography mode, first, a target diopter (value) of the variable lens 11 is determined, and then, a voltage value corresponding to the target diopter is obtained by, for example, searching a preset relationship graph (or relationship table) between the diopter and the voltage value, so as to apply a voltage to the variable lens 11, thereby implementing accurate control of deformation of the variable lens 11.

It should be understood that changing the diopter of the variable lens 11 when it is energized further includes: the diopter is adjusted within a positive range, i.e., the variable lens 11 is kept as a convex lens, and the radius of curvature of the convex surface of the convex lens is adjusted, thereby obtaining different focal lengths.

In the camera module 10, the type and structure of the variable lens 11 are not limited in the embodiments of the present application, and the variable lens 11 shown in fig. 4 is taken as an example for description.

As shown in fig. 4, the variable lens 11 includes a piezoelectric film (Pizeo-film) 111, a light transmissive film (Glass membrane, for example) 112, and a deformable member 113, which are sequentially arranged in the optical axis O direction.

The piezoelectric film 111 is made of a material capable of generating an inverse piezoelectric effect, and when the piezoelectric film 111 is powered on, as shown in fig. 5, the piezoelectric film 111 is deformed under the action of an electric field to drive the light-transmitting film 112 to deform, and the light-transmitting film 112 drives the deformable member 113 to deform when deforming. In the scene shown in fig. 5, the deformable member 113 is deformed into a convex lens having a thick middle and thin sides, and at this time, the diopter of the variable lens 11 becomes a positive value for converging light.

In some implementations, as shown in fig. 4 and 5, the variable lens 11 may further include a transparent substrate 114, the deformable member 113 is supported on the transparent substrate 114, and a first surface of the deformable member 113 is not deformed when the deformable member 113 is deformed, where the first surface is a surface where the deformable member 113 is attached to the transparent substrate 114. Due to the support of the light-transmissive substrate 114 on the deformable member 113, the deformable member 113 is deformed only by the extrusion of the light-transmissive film 112, and the controllability of the deformation of the deformable member 113 can be improved, thereby ensuring the controllability of the refractive index variation of the variable lens 11.

Optionally, the light-transmissive substrate 114 includes, but is not limited to, a glass substrate.

Referring to fig. 4, 5 and 6, in some implementations, the piezoelectric film 111 is in a ring shape, including but not limited to a circular ring shape or a rectangular ring shape, and the centers of the piezoelectric film 111, the transparent film 112 and the deformable element 113 coincide with each other in an orthographic projection along the optical axis O. Therefore, the pressure of the piezoelectric film 111 on the light-transmitting film 112 is more uniform in the deformation process, and when the light-transmitting film 112 deforms to drive the deformable member 113 to deform, the deformation of the deformable member 113 on the plane perpendicular to the optical axis O direction approaches central symmetry, so that the diopter of the deformable lens 11 in each direction after deformation is more uniform.

In some implementations, the deformable member 113 is made of a material including, but not limited to, a polymer (polymer) with high light transmittance, such as silicone, and by using the light-transmitting polymer as the deformable member 113, the deformable member 113 can have a performance meeting the above deformation requirement while the light transmittance is high, so as to ensure the light transmittance when the diopter changes, thereby ensuring the imaging effect.

With continued reference to fig. 6, in one implementation, the variable lens 11 may further include an outer frame 116, and the outer frame 116 encloses the edge of the transparent substrate 114. The transparent substrate 114, the piezoelectric film 111, the transparent film 112, and the deformable member 113 may be regarded as embedded in the outer frame 116. The outer frame 116 can protect the light-transmitting substrate 114, the piezoelectric film 111, the light-transmitting film 112, and the deformable member 113, and improve the damage resistance of these components.

In the variable lens 11, the way of energizing the piezoelectric film 111 includes, but is not limited to: a voltage is directly applied to the piezoelectric film 111. In some implementations, as shown in fig. 6, the variable lens 11 further includes pins 115, the pins 115 are electrically connected to the piezoelectric film 111, and the piezoelectric film 111 receives a voltage through the pins 115 to apply an electric field to the piezoelectric film 111 to deform. Further alternatively, the leads 115 extend from a side edge of the frame 116, for example, as shown in fig. 6, and both leads 115 extend from the same side edge of the frame 116.

In a specific scenario, the variable lens 11 may also be configured with a driving chip separately, and the piezoelectric film 111 is connected to the driving chip through the pins 115, and the driving chip is connected to the camera module 10 or a processing module of the electronic device. The processing module is used for obtaining the zooming parameters, determining the voltage values corresponding to the zooming parameters and outputting the voltage values to the driving chip. The driving chip is configured to output a driving voltage corresponding to the voltage value to the piezoelectric film 111, so that the piezoelectric film 111 deforms by a predetermined deformation amount under the action of the driving voltage, and the diopter of the variable lens 11 is controlled.

Fig. 7 is a flowchart illustrating a photographing method for a long Jiao Weiju according to an embodiment of the present application. Referring to fig. 7, the method may include the following steps S71 to S75.

S71: and starting the camera to enter a shooting mode.

S72: whether the long Jiao Weiju shooting mode needs to be started.

If the long Jiao Weiju photographing mode is started, steps S73 and S74 are performed. If the long Jiao Weiju photographing mode is not activated, step S75 is performed.

S73: the processing module sends out an instruction to control the driving chip to output voltage.

S74: the diopter of the variable lens is changed into a positive value under the action of voltage, a convex lens function is generated, and the variable lens is matched with the long-focus camera to realize the long Jiao Weiju shooting function.

S75: the driving chip does not output voltage, the diopter of the variable lens is maintained to be zero, and the telephoto camera keeps the telephoto shooting function.

It should be understood that the photographing method of the embodiment of the present application for the length Jiao Weiju may also be not limited thereto, and for example, the diopter of the variable lens may be switched between different positive values, between a negative value and zero, between a negative value and a positive value, or the like.

For convenience of description, the diopter when a first object (for example, a first object a) farther away is photographed is referred to as a first diopter, and the diopter when a second object (for example, a second object B) closer away is photographed is referred to as a second diopter. As shown in fig. 8, the photographing method of the length Jiao Weiju according to another embodiment of the present application may include the following steps S1 and S2.

S1, driving a lens in the tele lens assembly by a driving mechanism so as to enable the tele lens assembly to have a first focal length, adjusting the variable lens to have a first diopter, and shooting a first object.

S2: and adjusting the variable lens to have a second diopter, and shooting a second object, wherein the distance between the second object and the tele lens assembly is smaller than the distance between the first object and the tele lens assembly, and the first diopter is smaller than the second diopter.

The diopter is changed through the deformation of the variable lens, so that the objects with different distances can be shot, the telephoto lens assembly can be used for shooting the object (the first object A) with a far distance, and when the object (the second object B) with a near distance is shot, the diopter of the variable lens is changed to be changed from the first diopter to the second diopter, so that the image of the object (the second object B) with a near distance falls on an imaging surface, namely, the object with a near distance is shot clearly.

The shooting method according to the embodiment of the present application can be based on the camera module 10, and the shooting process and the shooting principle can refer to the description of fig. 2 and fig. 3, which are not described herein again.

For the step S2, in some examples, the driving mechanism may keep the position of the lens in the tele lens assembly unchanged, i.e., having the same position as in the step S1, and obtain a second focal length smaller than the first focal length by only changing the diopter of the variable lens, that is, realize a clear photographing of an object at a close distance by only changing the diopter of the variable lens.

In other examples, the driving mechanism drives the lenses in the tele lens assembly to adjust the focal length of the tele lens assembly so that the tele lens assembly has a second focal length that is less than the first focal length, i.e., by a combination of varying the power of the variable lens and adjusting the tele lens assembly, a sharp shot of an object at a close distance is achieved.

Please refer to fig. 9, which is a method for photographing a long image Jiao Weiju according to another embodiment of the present application. After step S1, the photographing method for the length Jiao Weiju of the present embodiment further includes steps S3 to S5.

S1, a driving mechanism drives a lens in the tele lens assembly to enable the tele lens assembly to have a first focal length, and adjusts the variable lens to have a first diopter to shoot a first object.

And S3, displaying the image including the first object on a shooting interface of the camera module.

And S4, receiving and responding to the operation instruction, and selecting a preset area of the shooting interface.

And S5, adjusting the variable lens to have a third diopter, wherein the third diopter is larger than the first diopter, and displaying the preset area on the shooting interface in a full screen mode after the preset area is enlarged.

In some scenarios, as shown in fig. 10, the shooting interface displayed by the camera module may include a first interface 101 and a second interface 102, where the second interface 102 is smaller than the first interface 101 and is displayed on the first interface 101, the second interface 102 is equivalent to a floating window (or an auxiliary display interface) displayed on the first interface 101, and a user may adjust the size and/or the position of the second interface 102 by, for example, dragging. It will be appreciated that the second interface 102 is for the image displayed by the first interface 101 at the location of the display.

In step S4, the user may select and drag the second interface 102 by clicking to generate an operation instruction, where the selected area is a predetermined area after the second interface 102 is moved to a predetermined position.

In other scenarios, as shown in fig. 11, the camera module only displays the shooting interface (i.e. the first interface 101), and in step S4, the user selects and drags a selected area by clicking, and the shooting interface displays a selection box 103 to identify the area as a predetermined area.

In step S5, the variable lens is deformed to increase the diopter power from the first diopter power to the third diopter power by increasing the voltage applied to the variable lens, for example. The variable lens is adjusted within the range that diopter is positive value, the variable lens has the convex lens effect, the light condensation function is enhanced, the amplification function can be realized, and the first object can be shot more clearly.

It should be understood that the principle and manner of the steps S3 to S5 may also be applied to photographing the second object, which is beneficial to obtain a clearer image of the second object.

Referring to fig. 4 and 12, in some examples, the piezoelectric film 111 may include four sub-electrodes, i.e., a sub-electrode 111a, a sub-electrode 111b, a sub-electrode 111c, and a sub-electrode 111d. The sub-electrodes 111a and 111c are diagonally arranged, and the sub-electrodes 111b and 111d are diagonally arranged. These four sub-electrodes are provided in the four quadrants of the tele lens assembly 12, respectively. The four quadrants are four regions divided by a horizontal axis x and a vertical axis y in a planar rectangular coordinate system, such as four regions of an upper region, a lower region, a left region, a right region and a left region shown in fig. 12, an origin O3 of the planar rectangular coordinate system is located on an optical axis O of the tele lens assembly 12, and a plane where the planar rectangular coordinate system is located is perpendicular to the optical axis O of the tele lens assembly 12.

Here, the voltages applied to the four sub-electrodes can be individually controlled to control the deformation amount of the variable lens 11, thereby controlling the inclination angle α of the light incident surface M of the variable lens 11, which is the surface of the variable lens 11 facing away from the telephoto lens assembly 12, to deflect light. For example, the voltage applied to the sub-electrode 111c is greater than the voltage applied to the sub-electrode 111a, the voltages applied to the sub-electrode 111b and the sub-electrode 111d are the same, and as shown in fig. 12 and 13, the light incident surface M is inclined toward the sub-electrode 111c and the sub-electrode 111d, so that the correction can be performed when the Optical axis O of the telephoto lens assembly 12 is shifted, and the Optical anti-shake effect can be achieved, which corresponds to an Optical Image Stabilizer (OIS).

Alternatively, the four sub-electrodes may be arranged in a central symmetry, which is beneficial to uniform the force of the electric field applied to the piezoelectric film 111 and uniform the deformation of the transparent film 112 and the deformable member 113.

It should be noted that, although step numbers such as S1, S2, S3, etc. are used in the description of the present application for the purpose of more clearly and briefly describing the corresponding content, and do not constitute a substantial limitation on the sequence, those skilled in the art may perform S3 first and then S2, etc. in the specific implementation, but these steps are all within the protection scope of the present application.

The camera module 10 may be implemented as a single camera, or may include a plurality of cameras, and some or all of the plurality of cameras may integrate the long-focus macro function. Moreover, the camera module 10 can exist as a single component, which is not only beneficial to meeting the requirements of production, sale and transportation, but also can be flexibly assembled on electronic devices of different types, thereby being beneficial to ensuring the compatibility of the camera module 10 and being beneficial to popularization.

The camera module 10 is not limited to the above-mentioned embodiments, and may be applied to a periscopic camera or an upright camera.

Fig. 14 is a schematic structural diagram of a periscopic camera according to an embodiment of the present application. Referring to fig. 14, the incident direction of the camera module 10 includes two directions, which are a first direction x and a second direction y, respectively, and the second direction y is perpendicular to the first direction x. It should be understood that the light entering directions indicated by arrows x and y in fig. 14, 16 and 17 are exemplary illustrations, and that light is transmitted divergently in an actual scene, not only in the linear directions indicated by arrows x and y. The first direction x and the second direction y depend on the placement direction of the camera module 10. In the azimuth scenario shown in fig. 14, the first direction x is the horizontal direction and the second direction y is the vertical direction.

The lenses in the tele lens assembly 12 and the image sensor 13 are arranged in a first direction x, and light is transmitted through the variable lens 11 in a second direction y.

The camera module 10 may further include a prism 15 and a transparent cover 14. In the light incident direction, the prism 15 is disposed between the variable lens 11 and the telephoto lens assembly 12, the prism 15 is used for deflecting the light transmitted in the second direction y and through the variable lens 11 to be transmitted in the first direction x, and the light transmitted through the prism 15 is transmitted toward the telephoto lens assembly 12.

The transparent cover 14 covers the variable lens 11 to protect the camera module 10 from water and dust, for example, and in addition, the transparent cover 14 is used to assemble and fix the variable lens 11.

In one implementation, as shown in fig. 14, the variable lens 11 may be directly fixedly disposed on a second surface 141 of the transparent cover plate 14, the second surface 141 being a surface of the transparent cover plate 14 facing the telephoto lens assembly 12, and the first surface 143 of the transparent cover plate 14 and the second surface 141 being disposed opposite to each other along the second direction y.

In another implementation, as shown in fig. 15, the variable lens 11 may be embedded in the light-emitting side of the transparent cover 14, for example, a second side of the transparent cover 14 may be provided with a groove 142, the second side is a side of the transparent cover 14 facing the telephoto lens component 12, and the variable lens 11 is fixed in the groove 142, so as to facilitate reducing the thickness of the camera module 10. A portion of the variable lens 11 may protrude from the second surface 141 of the transparent cover 14.

Fig. 16 is a schematic structural diagram of a periscopic camera according to another embodiment of the present application. For convenience of description, the embodiments of the present application use the same reference numerals to identify the same-named structural members. Referring to fig. 16, the incident direction of the camera module 10 also includes two directions, which are the first direction x and the second direction y, respectively. In the azimuth scenario shown in fig. 16, the first direction x is the horizontal direction and the second direction y is the vertical direction.

The variable lens 11, the lenses in the tele lens assembly 12 and the image sensor 13 are all arranged in a first direction x.

The camera module 10 also includes a prism 15. In the light incident direction, the prism 15 is disposed between the variable lens 11 and the telephoto lens assembly 12, the prism 15 is used for deflecting the light transmitted along the second direction y to be transmitted along the first direction x, and the light transmitted through the prism 15 is transmitted along the first direction x toward the variable lens 11 and the telephoto lens assembly 12. In the present embodiment, the light transmitted through the prism 15 is transmitted through the variable lens 11 in the first direction x.

In one implementation of this embodiment, the camera module 10 may also include a transparent cover 14 covering the prism 15 to protect the camera module 10 from water and dust, for example.

Fig. 17 is a schematic structural diagram of an upright camera according to an embodiment of the present application. Referring to fig. 17, the light incident direction of the camera module 10 includes the second direction y, but does not include the first direction x, and the variable lens 11, the lens in the telephoto lens assembly 12, and the image sensor 13 are all arranged along the second direction y. The light passes through the lenses in the variable lens 11, the tele lens assembly 12 in sequence.

For a scene that the camera module 10 includes the transparent cover 14, the transparent cover 14 covers the variable lens 11, and the variable lens 11 is fixed to the transparent cover 14. The fixing manner of the variable lens 11 and the transparent cover plate 14 can be described with reference to the embodiment shown in fig. 14 or fig. 15.

Another embodiment of the present application provides an electronic device, which includes the camera module 10 according to any one of the above embodiments. The electronic device may be implemented in various specific forms, for example, a mobile terminal having a photographing function, such as a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a Personal Digital Assistant (PDA), a Portable Media Player (PMP), a navigation device, a wearable device, and a smart band.

It will be understood by those skilled in the art that the configuration according to the embodiment of the present application can be applied to a fixed type of electronic device having a photographing function, in addition to elements particularly used for moving purposes.

Since the electronic device has the camera module 10 according to any one of the foregoing embodiments, the electronic device can produce the beneficial effects of the camera module 10 according to the corresponding embodiment.

The above description is only a part of the embodiments of the present application, and not intended to limit the scope of the present application, and all equivalent structural changes made by using the contents of the specification and the drawings are included in the scope of the present application.

Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element, and components, features, and elements having the same designation in different embodiments may have the same meaning as well as different meanings that are determined by their interpretation in the embodiment or further by their context in the embodiment.

In addition, although the terms "first, second, third, etc. are used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well. The terms "or" and/or "are to be construed as inclusive or meaning any one or any combination. An exception to this definition will occur only when a combination of elements, functions, steps or operations are inherently mutually exclusive in some way.

Claims

1. The utility model provides a camera module, includes image sensor, its characterized in that, camera module still includes: the driving mechanism is connected with the tele lens assembly and is used for driving a lens in the tele lens assembly; the variable lens is used for deforming when being electrified so as to change diopter, and the focal length of the camera module is reduced when shooting.

2. The camera module according to claim 1, wherein the variable lens includes a piezoelectric film, a light transmissive film, and a deformable member, which are sequentially arranged in an optical axis direction;

the piezoelectric film is used for deforming after being influenced by an electric field and driving the light-transmitting film to deform, and the light-transmitting film is used for driving the deformable piece to deform when deforming.

3. The camera module according to claim 2, wherein the variable lens further comprises a transparent substrate, the deformable member is disposed on the transparent substrate, a first surface of the deformable member that deforms is not deformed, and the first surface is a surface of the deformable member that is attached to the transparent substrate.

4. The camera module according to claim 2, wherein the piezoelectric film has a ring shape, and centers of the piezoelectric film, the light transmissive film and the deformable member coincide with each other in an orthogonal projection in the optical axis direction.

5. The camera module of claim 2, wherein the variable lens further comprises a pin, the pin being electrically connected to the piezoelectric film.

6. The camera module of claim 1, wherein the lenses of the tele lens assembly and the image sensor are arranged in a first direction, light passes through the variable lens in a second direction, the second direction being perpendicular to the first direction,

the camera module further comprises:

a prism disposed between the variable lens and the telephoto lens assembly for deflecting light transmitted through the variable lens to be transmitted along the first direction;

and a transparent cover plate covering the variable lens and fixing the variable lens.

7. The camera module of claim 1, wherein the lenses of the tele lens assembly and the image sensor are arranged in a first direction in which light passes through the variable lens,

the camera module further comprises a prism, the variable lens is arranged between the prism and the telephoto lens assembly, the prism is used for deflecting light in a second direction to be transmitted along the first direction, and the second direction is perpendicular to the first direction.

8. The camera module of claim 1, wherein the variable lens, the lens of the tele lens assembly, and the image sensor are arranged in a second direction,

the camera module further comprises a transparent cover plate, the transparent cover plate covers the variable lens, and the variable lens is fixed with the transparent cover plate.

9. An electronic device, characterized in that the electronic device comprises the camera module according to any one of claims 1 to 8.

10. A shooting method based on the camera module of any one of claims 1 to 8 or the electronic device of claim 9, the shooting method comprising:

s1, the driving mechanism drives a lens in the long-focus lens assembly to enable the long-focus lens assembly to have a first focal length, the variable lens is adjusted to have a first diopter, and shooting is performed on a first object;

s2, adjusting the variable lens to have a second diopter, and shooting a second object, wherein the distance between the second object and the telephoto lens assembly is smaller than the distance between the first object and the telephoto lens assembly, and the first diopter is smaller than the second diopter.

11. The photographing method according to claim 10, wherein the S2 step further includes:

the drive mechanism drives a lens in the tele lens assembly to cause the tele lens assembly to have a second focal length, the first focal length being greater than the second focal length;

alternatively, the drive mechanism maintains the same position of the lenses in the tele lens assembly as in step S1.

12. The photographing method according to claim 10, wherein the photographing method further comprises:

s3, displaying an image containing the first object on a shooting interface of the camera module;

s4, receiving and responding to an operation instruction, and selecting a preset area of the shooting interface;

and S5, adjusting the variable lens to have a third diopter, wherein the third diopter is larger than the first diopter, and displaying the preset area in the shooting interface in a full screen mode after the preset area is amplified.

13. The photographing method according to claim 10, wherein the piezoelectric film includes: the four sub-electrodes are respectively arranged in four quadrants of the telephoto lens component, the four quadrants are four areas divided by a transverse axis and a longitudinal axis in a plane rectangular coordinate system, the plane of the plane rectangular coordinate system is vertical to the optical axis, and the origin point of the plane rectangular coordinate system is positioned on the optical axis;

the method further comprises the following steps: and S6, respectively controlling the voltages applied to the four sub-electrodes so as to control the deformation amount of the variable lens and deflect light.

14. The photographing method according to claim 10, wherein the first diopter has a zero or negative value and the second diopter has a positive value.