WO2023066101A1

WO2023066101A1 - Camera module and electronic device

Info

Publication number: WO2023066101A1
Application number: PCT/CN2022/124779
Authority: WO
Inventors: 高志稳; 黄楠
Original assignee: 维沃移动通信有限公司
Priority date: 2021-10-19
Filing date: 2022-10-12
Publication date: 2023-04-27
Also published as: CN113873130B; CN113873130A

Abstract

The present application discloses a camera module and an electronic device. The camera module comprises a module housing, a guide seat, a liquid lens, a push block assembly, a driving assembly, and an imaging apparatus; the driving assembly is connected to the push block assembly to drive the push block assembly to reciprocate in a first direction along the guide seat, so as to drive the liquid lens to deform, thereby realizing the zooming of the liquid lens. The push block assembly reciprocates in the first direction along the guide seat, that is, the displacement of the push block assembly in the direction perpendicular to the first direction can be avoided under the guidance of the guide seat, such that the displacement of the push block assembly can bring more definite deformation to the liquid lens, thereby improving zoom accuracy.

Description

Camera modules and electronic equipment

Cross References to Related Applications

This application claims priority to Chinese Patent Application No. 202111214549.7 filed in China on October 19, 2021, the entire contents of which are hereby incorporated by reference.

technical field

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

Background technique

With the development of electronic equipment technology, people have increasingly higher requirements on the shooting effect of electronic equipment. Due to its good zoom capability and relatively compact structure, the liquid lens is more and more used in camera modules of electronic equipment.

In related technologies, the mass block is usually driven in a preset direction to squeeze the surface of the liquid lens, so that the surface of the liquid lens is deformed to realize the zooming of the liquid lens. However, in the related art, the proof mass may be shifted in a direction other than the preset direction, resulting in an uncertain deformation of the liquid lens, resulting in low zooming precision.

Contents of the invention

The purpose of the present application is to provide a camera module and electronic equipment to solve the problem that the mass block is shifted in a direction other than the preset direction, resulting in low zooming precision of the liquid lens.

In order to solve the above-mentioned technical problems, the application is implemented as follows:

In the first aspect, the embodiment of the present application proposes a camera module, including:

The module housing, the module housing has a housing cavity and a first opening communicating with the housing cavity;

A liquid lens, the liquid lens is fixedly connected to the module housing at the first opening;

A guide seat, the guide seat is arranged in the accommodating cavity, and the guide seat is fixedly connected with the module housing;

a push block assembly, the push block assembly is connected to the guide seat, and the push block assembly reciprocates along the guide seat in a first direction to drive the deformation of the liquid lens, and the first direction is the axial direction of the first opening;

a driving component, the driving component is connected with the pushing block component;

The imaging device is arranged at one end of the first opening.

In the second aspect, the embodiment of the present application provides an electronic device, including: the camera module as shown in the first aspect.

The camera module provided by the embodiment of the present application includes a module housing, a guide seat, a liquid lens, a push block assembly, a drive assembly, and an imaging device, wherein the drive assembly is connected to the push block assembly to drive the push block assembly along the guide seat. The reciprocating motion in the first direction drives the deformation of the liquid lens, thereby realizing the zooming of the liquid lens. The push block assembly reciprocates in the first direction along the guide seat, that is, under the guidance of the guide seat, the displacement of the push block assembly in the direction perpendicular to the first direction can be avoided, so that the displacement of the push block assembly can bring the liquid lens To more definite deformation, improve zoom accuracy.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Description of drawings

The above and/or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, wherein:

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

Figures 2a to 2c are working principle diagrams of the liquid lens;

Fig. 3 is a schematic structural view of the guide seat in the embodiment of the present application;

Fig. 4 is one of the three-dimensional structural schematic diagrams reflecting the assembly relationship between the guide seat and the push block assembly;

Fig. 5 is the second three-dimensional structural schematic diagram reflecting the assembly relationship between the guide seat and the push block assembly;

Fig. 6 is one of the cross-sectional views of the camera module provided by the embodiment of the present application;

Fig. 7 is an exploded view of the camera module provided by the embodiment of the present application;

Fig. 8 is one of the three-dimensional structural schematic diagrams of the camera module provided by the embodiment of the present application;

Fig. 9 is the second schematic diagram of the three-dimensional structure of the camera module provided by the embodiment of the present application;

Fig. 10 is the second cross-sectional view of the camera module provided by the embodiment of the present application;

FIG. 11 is the third cross-sectional view of the camera module provided by the embodiment of the present application.

Shown in the figure: 100-module housing, 101-accommodating cavity, 102-first opening, 110-first housing, 120-second housing, 130-third housing, 200-liquid lens , 300-Guide seat, 310-First guide part, 311-Guide groove, 320-First through hole, 400-Push block assembly, 410-Guide block, 411-Second guide part, 420-Push block bracket, 430 -Adjustment ring, 500-drive assembly, 510-electromagnetic structure, 520-magnet, 600-imaging device, 610-image sensor, 620-circuit board, 700-lens module.

Detailed ways

Embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary, and are only for explaining the present application, and should not be construed as limiting the present application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

The features of the terms "first" and "second" in the description and claims of the present application may explicitly or implicitly include one or more of these features. In the description of the present application, unless otherwise specified, "plurality" means two or more. In addition, "and/or" in the specification and claims means at least one of the connected objects, and the character "/" generally means that the related objects are an "or" relationship.

In the description of this application, it is to be understood that the terms "length", "width", "upper", "lower", "left", "right", "bottom", "inner", "outer", "axis The orientation or positional relationship indicated by "to", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, rather than indicating or implying that the referred device or element must have Certain orientations, constructed and operative in certain orientations, therefore should not be construed as limitations on the present application.

In the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application in specific situations.

As shown in Figure 1, the camera module provided by the embodiment of the present application includes:

A module housing 100, the module housing 100 has a housing chamber 101 and a first opening 102 communicating with the housing chamber 101;

A liquid lens 200, the liquid lens 200 is fixedly connected to the module housing 100 at the first opening 102;

The guide seat 300, the guide seat 300 is arranged in the accommodating cavity 101, and the guide seat 300 is fixedly connected with the module housing 100;

Push block assembly 400, the push block assembly 400 is connected with the guide seat 300, the push block assembly 400 reciprocates along the guide seat 300 in the first direction to drive the deformation of the liquid lens 200, the first direction is the axial direction of the first opening 102 direction;

Drive assembly 500, drive assembly 500 is connected with pushing block assembly 400;

The imaging device 600 is disposed at one end of the first opening 102 .

In this embodiment, the module case 100 can be mainly used for protecting and supporting other structures.

The module housing 100 has an accommodating cavity 101 and a first opening 102 communicating with the accommodating cavity 101 , and the liquid lens 200 can be disposed in the first opening 102 on the module housing 100 . For simplicity of description, the axial direction of the first opening 102 may be referred to as a first direction. Usually, the first direction may be consistent with the direction of the optical axis of the camera module.

External light can pass through the liquid lens 200 to reach the imaging device 600 , and the guide seat 300 can be disposed in the accommodating cavity 101 .

In one example, the guide seat 300 may be an integral structure fixedly connected to the module casing 100 . When the guide seat 300 is arranged at one end of the first opening 102, in order to avoid blocking the external light directed to the imaging device 600, a through hole for light passing through (hereinafter referred to as the first through hole) may be provided on the guide seat 300. hole 320 ), the first through hole 320 may be disposed opposite to the first opening 102 , and the external light may pass through the first opening 102 and the first through hole 320 in sequence to reach the imaging device 600 .

In other examples, the guide seat 300 may include a plurality of independent structural parts, and each independent structural part may be respectively fixed with the module housing 100 . In projection on a plane perpendicular to the first direction, these independent structural members may be arranged around the first opening 102 to avoid blocking light rays directed to the imaging device 600 .

Generally speaking, the liquid lens 200 includes a surface with a certain deformability, and for simplicity of description, the surface with a certain deformability may be referred to as a first surface. By driving the first surface to deform, the focus of the liquid lens 200 can be changed, thereby helping to realize the focusing function or anti-shake function of the liquid lens 200 . The realization principle of the focusing function and the anti-shake function of the liquid lens 200 will be briefly described below with reference to FIGS. 2 a to 2 c.

As shown in FIG. 2a, FIG. 2a is a working principle diagram of the liquid lens 200 in a normal state. At this time, the first surface of the liquid lens 200 (denoted as F) can be in a free state, left and right remain symmetrical, and the curvature is relatively small. After passing through the liquid lens 200, the external light (denoted as L) will gather at a far position Fa, and the focus of the liquid lens 200 is Fa.

As shown in Figure 2b, when the first surface is deformed by the extrusion of an external uniform force, the left and right sides still maintain symmetry, but the curvature increases, and the external light will converge at a closer position Fb after penetrating the liquid lens 200, The focal point of the liquid lens 200 is Fb.

Based on the change of the focal point Fa and the focal point Fb, it can be seen that by driving the deformation of the first surface, the position of the focal point of the liquid lens 200 in the direction of the optical axis can be adjusted, thereby realizing the focusing function.

As shown in Figure 2c, when the first surface is deformed by the extrusion of the left-right asymmetric external force, the left-right is no longer symmetrical, and the external light will converge at the position Fc after penetrating the liquid lens 200, and the focus of the liquid lens 200 for Fc. It can be seen that there is an offset between Fc and Fa in the direction perpendicular to the direction of the optical axis of the camera module.

Based on the change of the focal point Fa and the focal point Fc, it can be seen that by driving the deformation of the first surface, the position of the focal point of the liquid lens 200 in the direction perpendicular to the direction of the optical axis can be adjusted. When the camera module shakes, the position of the focus of the liquid lens 200 in the direction perpendicular to the optical axis can be adjusted to compensate for the shake, thereby realizing the anti-shake function.

The driving of the deformation of the liquid lens 200 can be realized by setting the pushing block assembly 400 and the driving assembly 500 . Wherein, the pushing block assembly 400 can move in a first direction and come into contact with the liquid lens 200 to drive the liquid lens 200 to deform.

In this embodiment, the push block assembly 400 can be slidably connected with the guide seat 300 in the first direction, and the drive assembly 500 is connected with the push block assembly 400 and can be used to drive the push block assembly 400 to reciprocate in the first direction .

The push block assembly 400 reciprocates in the first direction under the guidance of the guide seat 300, that is to say, the guide seat 300 provides a guiding function, in addition to satisfying the movement of the push block assembly 400 in the first direction, it can also limit the push block Displacement of assembly 400 in a direction perpendicular to the first direction.

For example, the guide seat 300 is provided with a plurality of through holes (hereinafter referred to as second through holes, not shown in FIG. 1 ) extending along the first direction, and the push block assembly 400 is at least partially slidably disposed in the second through holes, and The cross-sectional shape of the part of the push block assembly 400 located in the second through hole is the same as the cross-sectional shape of the second through hole, so that the push block assembly 400 can move in the first direction, and move in the direction perpendicular to the first direction The upper displacement is limited by the second through hole.

For another example, several guide grooves or several guide blocks are provided on the surrounding surface of the guide seat 300 .

In the case where a guide groove is provided on the guide seat 300 , the length direction of the guide groove may be consistent with the first direction, so that the push block assembly 400 can move along the first direction. The freedom of movement of the push block assembly 400 in the width direction of the guide groove may be restricted by the inner walls of the two sides of the guide groove. In the direction of depth of the guide groove, the guide groove may include a space that is narrow on the outside and wide on the inside. In this way, when the shape of the part of the push block assembly 400 that fits into the guide groove matches the cross-sectional shape of the guide groove, the push block assembly 400 The degree of freedom in the depth direction of the guide groove can be limited by the groove bottom surface of the guide groove and the space narrow on the outside and wide on the inside.

Similarly, in the case where a guide block is provided on the guide seat 300, if the cross section of the guide block includes a part that is wide on the outside and narrow on the inside, and the push block assembly 400 includes a guide whose cross section matches the shape of the cross section of the guide block When the groove is formed, the guide seat 300 can also limit the displacement of the push block assembly 400 in a direction perpendicular to the first direction.

As for the driving assembly 500, it may include a linear motor, or may also include a rotary motor and a transmission mechanism for converting rotary motion to linear motion.

For example, when the driving assembly 500 includes a linear motor, the linear motor may be a voice coil motor or the like, and may be disposed on the module casing 100 or the guide seat 300 . Correspondingly, a magnet 520 may be provided on the push block assembly 400 to drive the push block assembly 400 to move in the first direction by turning on and off the voice coil motor or adjusting the magnitude of the current.

For another example, when the drive includes a rotary motor and a transmission mechanism, the rotary motor may be a stepping motor, and the transmission mechanism may be a rack and pinion transmission mechanism. The stepper motor is connected with the gear and can be set on the module housing 100 , and the rack can be set on the push block assembly 400 . When the stepping motor drives the gear to rotate, the rack and the push block assembly 400 can be driven to move in the first direction.

Of course, the above are some examples of the structure and connection relationship of the guide seat 300, the push block assembly 400, and the driving assembly 500. In practical applications, the specific structures and connection methods of each assembly or component can be adjusted as required.

The camera module provided in the embodiment of the present application includes a module housing 100, a guide seat 300, a liquid lens 200, a push block assembly 400, a drive assembly 500, and an imaging device 600, wherein the drive assembly 500 is connected to the push block assembly 400, The pushing block assembly 400 is driven to reciprocate in the first direction along the guide seat 300 , and then the liquid lens 200 is driven to deform, thereby realizing zooming of the liquid lens 200 . The push block assembly 400 reciprocates in the first direction along the guide seat 300, that is, under the guidance of the guide seat 300, the displacement of the push block assembly 400 in the direction perpendicular to the first direction can be avoided, so that the displacement of the push block assembly 400 It can bring more definite deformation to the liquid lens 200 and improve the zooming precision.

Optionally, the guide seat 300 includes N first guide portions 310, where N is a positive integer;

The push block assembly 400 includes N second guide parts 411 , the N second guide parts 411 correspond to the N first guide parts 310 one by one, and one second guide part 411 is slidably connected to one first guide part 310 .

As indicated above, the guide seat 300 may be of unitary construction or comprise a plurality of separate structural pieces. To simplify the description, the guide seat 300 is mainly used as an example for illustration.

As shown in FIG. 3 , as an example, the guide seat 300 may include outer surfaces parallel to the first direction, and the above-mentioned N first guide portions 310 may be arranged on these outer surfaces. For example, when the guide seat 300 is in the shape of a cuboid, N first guide portions 310 may be arranged on the outer surfaces around the guide seat 300 .

Referring to the above example, the surrounding surface of the guide seat 300 can be specifically provided with guide grooves or guide blocks and other structures, and these guide grooves or guide blocks on the guide seat 300 can be regarded as the first guide portion 310 . Of course, in practical applications, the first guide portion 310 may also be a second through hole penetrating through the guide seat 300 along the first direction or the like.

When there are multiple first guide parts 310, the multiple first guide parts 310 may include at least one of a guide groove, a guide block and a second through hole, which is not specifically limited here.

As shown in FIG. 4 and FIG. 5 , the push block assembly 400 includes N second guide parts 411 , and the N second guide parts 411 are connected to the N first guide parts 310 in one-to-one correspondence. For example, when the first guide part 310 is a guide groove, the second guide part 411 may be a guide block, and the guide block is wholly or partially slidably disposed in the guide groove. For another example, when the first guide part 310 is a guide block, the second guide part 411 may be a guide groove.

N is a positive integer, that is to say, the number of the second guiding portion 411 may be one or more. In the case that there is one second guide part 411 , or there are multiple second guide parts 411 configured to move synchronously, the displacement of the push block assembly 400 in the first direction may be consistent. At this time, driven by the push block assembly 400, the liquid lens 200 can be switched between the states shown in FIG. 2a and FIG. 2b to realize the focusing function. As for the realization of the anti-shake function, it can be realized through other driving structures.

In the case that there are multiple second guide parts 411 and the movement of each second guide part 411 is relatively independent, the displacements of these second guide parts 411 in the first direction may be consistent or different. At this time, driven by the push block assembly 400, the liquid lens 200 can be switched among Fig. 2a, Fig. 2b and Fig. 2c to realize the focusing function and anti-shake function.

In some embodiments, when the guide seat 300 is an integral structure, it can effectively reduce the difficulty of assembling between the subsequent guide seat 300 and the module housing 100 .

As shown in FIGS. 3 and 6 , in order to prevent the guide seat 300 from facing the light rays directed to the imaging device 600 , a first through hole 320 may be provided on the guide seat 300 , and the liquid lens 200 and the imaging device 600 are respectively located in the first through hole 320 . both ends of the axial direction. At this time, the external light can pass through the liquid lens 200 and the first through hole 320 in sequence to reach the imaging device 600 .

In addition, the above-mentioned N first guide portions 310 may be located on a side wall of the guide seat 300 away from the first through hole 320 . In other words, the first guide portion 310 may be located outside the first through hole 320 to avoid interference to light passing through the first through hole 320 .

Optionally, as shown in FIG. 3 , the first guide part 310 is specifically a guide groove 311; along the direction from the bottom surface of the groove to the notch, the groove width of the guide groove 311 gradually decreases; the cross-section of the second guide part 411 The shape matches the cross-sectional shape of the guide groove 311 .

As shown above, the guide seat 300 can limit the displacement of the push block assembly 400 in the direction perpendicular to the first direction, and this limiting effect can be realized through the design of the shape of the guide groove 311 .

Specifically, the length direction of the guide groove 311 can be consistent with the first direction, and the direction perpendicular to the first direction can be divided into the width direction and the depth direction of the guide groove 311 . Wherein, in the width direction of the guide groove 311 , the two side walls of the guide groove 311 can be used to limit the bidirectional displacement of the second guide portion 411 . In the depth direction of the guide groove 311 , the groove bottom surface of the guide groove 311 can limit the displacement of the second guide portion 411 in the direction from the notch to the groove bottom surface.

In this embodiment, along the direction from the bottom surface of the groove to the notch, the notch of the guide groove 311 gradually decreases, forming a shape similar to a constriction. For example, as shown in FIG. 3 to FIG. 5 , the cross section of the guiding groove 311 is trapezoidal, and the long side of the trapezoidal shape is located on the bottom side of the groove. When the cross-sectional shape of the second guiding portion 411 is the same as that of the guiding groove 311 , the displacement of the second guiding portion 411 in the direction from the bottom of the groove to the notch can also be limited by the guiding groove 311 .

Of course, the cross-sectional shape of the second guide portion 411 is the same as the cross-sectional shape of the guide groove 311, which can be considered as a situation where the cross-sectional shape of the second guide portion 411 matches the cross-sectional shape of the guide groove 311. In practical applications, the cross-section of the second guide portion 411 may also be somewhat different from the cross-section of the guide groove 311 . For example, the end surface of the second guide part 411 facing the groove bottom surface of the guide groove 311 can be provided with a plurality of ribs, so that the contact between the second guide part 411 and the groove bottom surface changes from surface contact to line contact, avoiding surface contact. Increased friction due to too smooth contact surfaces.

In addition, the shape of the cross-section of the guide groove 311 is not limited to the trapezoid, for example, it can also be a circular segment shape, etc., to ensure that there is a specific space in the guide groove 311, and the specific space is from the bottom surface of the groove to the notch. The width gradually decreases in the direction.

Optionally, the push block assembly 400 further includes an adjustment ring 430 and N push block brackets 420; one end of the adjustment ring 430 is connected to the liquid lens 200, and the other end of the adjustment ring 430 is connected to N second guide parts 411;

The N push block brackets 420 correspond to the N second guide portions 411 one by one, and one second guide portion 411 is connected to the other end of the adjustment ring 430 through one push block bracket 420 .

In this embodiment, the liquid lens 200 may be deformed by directly acting on the liquid lens 200 through the adjusting ring 430 . Since the adjustment ring 430 may include an annular surface, there may be a relatively large contact surface with the liquid lens 200 , which can effectively avoid cutting the liquid lens 200 and improve the service life of the liquid lens 200 .

In some examples, the above N may be an integer greater than 1, and the N second guide portions 411 may be uniformly arranged in the circumferential direction of the adjustment ring 430 . Each second guide part 411 can move independently, and when the movement distance of each second guide part 411 is equal, the adjustment ring 430 can be driven to translate in the first direction, thereby helping to realize the focusing function of the liquid lens 200 . When the moving distances of the second guiding parts 411 are not equal, the adjustment ring 430 can be deflected, thereby helping to realize the anti-shake function of the liquid lens 200 .

Generally speaking, the above-mentioned adjustment ring 430 may be a continuous structure, that is, the adjustment ring 430 may be a complete ring structure. However, in some feasible implementation manners, the adjusting ring 430 may also include a plurality of arc-shaped plates arranged intermittently, and these arc-shaped plates may form a substantially ring-shaped structure.

As shown in FIG. 6 , each second guide portion 411 may be connected to the adjustment ring 430 through a corresponding push block bracket 420 . Generally speaking, when the lengths are equal, the push block bracket 420 can have a smaller mass than the second guide part 411, and the push block support 420 is provided to ensure the movement of the second guide part 411 in the first direction While the liquid lens 200 can be deformed accordingly, the overall weight of the camera module can be reduced.

With reference to the above example, in the case where the first guide portion 310 is the guide groove 311 , the push block assembly 400 may include a guide block 410 slidably connected to the guide groove 311 . The second guide portion 411 may be a part of the guide block 410 located in the guide groove 311 , or, when the guide block 410 is entirely located in the guide groove 311 , the second guide portion 411 may be the whole of the guide block 410 .

In other words, the push block bracket 420 is connected to the second guide portion 411 , and may specifically be connected to the guide block 410 including the second guide portion 411 .

As for how the push block bracket 420 is connected to the second guide portion 411 , and the connection manner between the push block bracket 420 and the adjustment ring 430 , they may be welded, clamped, or connected by fasteners, etc., which are not specifically limited here.

As shown in the above embodiments, the first through hole 320 may be provided in the guide seat 300. On this basis, in one embodiment, the camera module further includes a lens module 700, and the lens module 700 is at least partially disposed on In the first through hole 320 , the lens module 700 is disposed between the imaging device 600 and the liquid lens 200 .

In general, the lens module 700 may be an optical element for correcting distortion or implementing other optical processing functions, which is not specifically limited here. In this embodiment, the first through hole 320 is provided in the guide seat 300 , which can provide a corresponding installation space for the optical module, and can limit the position of the optical module, improving the installation accuracy of the optical module.

Combined with an application scenario, external light can pass through the liquid lens 200 and the lens module 700 in sequence and then reach the imaging device 600 .

Optionally, the driving assembly 500 includes an electromagnetic structure 510 and a magnet 520 , and the electromagnetic structure 510 and the magnet 520 are respectively connected to the module housing 100 and the push block assembly 400 .

In this embodiment, the driving of the push block assembly 400 can be realized based on the magnetic field force, and the connection between the module housing 100 and the push block assembly 400 does not need to be connected through a physical structure, thereby helping to reduce the weight of the module housing 100. Difficulty of assembly with push block assembly 400 .

In some examples, the above-mentioned electromagnetic structure 510 may be an independent electromagnet 520 or an electromagnetic coil, or an integrated voice coil motor, etc., which are not specifically limited here.

The magnetic pole direction of the magnet 520 provided on the push block assembly 400 can be fixed, and after passing through the electromagnetic structure 510, the magnetic field generated can generate attraction or repulsion to the magnet 520, and the magnet 520 can drive The push block assembly 400 moves in a first direction.

In some implementations, the push block assembly 400 can be moved to a desired position by changing the magnitude or direction of the current passed into the electromagnetic structure 510 , so as to meet the zooming requirement of the liquid lens 200 .

It is easy to understand that the zooming accuracy of the liquid lens 200 will be affected by the displacement accuracy of the push block assembly 400 . Therefore, in order to further improve the zooming accuracy of the liquid lens 200 , the camera module may also be provided with a position sensor opposite to the push block assembly 400 . Optionally, the position sensor is disposed on the module casing 100 .

The push block assembly 400 is set in phase with the position sensor, which can be understood as the position sensor can collect the position information of the assembly 400 .

In some examples, the aforementioned position sensor may be a laser sensor, an eddy current sensor, or the like. As shown in the previous embodiment, the push block assembly 400 is provided with a magnet 520, and accordingly, the position sensor may also include a Hall sensor.

As shown above, the push block assembly 400 may include N second guide pieces, and when these guide pieces move independently, it can be considered that the push block assembly 400 includes N push units. Each push unit can be provided with a magnet, and correspondingly, each magnet can be configured with a Hall sensor.

In practical applications, the camera module may include a controller. Based on the position information collected by the position sensor, the controller may determine whether the push block assembly 400 has reached the desired position, and may determine the distance between the actual position of the push block assembly 400 and the desired position. difference, the driving assembly 500 is controlled to drive the pushing block assembly 400 to a desired position.

Optionally, the imaging device 600 includes an image sensor 610 and a circuit board 620;

The image sensor 610 is disposed in the accommodating cavity 101 , one end of the circuit board 620 is electrically connected to the image sensor 610 , and the other end of the circuit board 620 passes through the module housing 100 .

Image sensor 610 may be used to convert optical signals into electrical signals. In some application scenarios, the imaging device 600 also includes, for example, an image processor or other types of electronic components; or, the camera module may need to transmit electrical signals to external electronic components, for example, the camera module may transmit the captured image Transfer to an external motherboard or memory, etc.

To facilitate transmission of electrical signals, the imaging device 600 may include a circuit board 620 electrically connected to the image sensor 610 . The circuit board 620 may be a rigid circuit board 620 or a flexible circuit board 620 , or a combination of the two circuit boards 620 .

In one example, the circuit board 620 may include a flexible circuit board 620 , and the flexible circuit board 620 may pass out of the module housing 100 from the accommodating cavity 101 so as to be connected with other electronic components.

Optionally, the module housing 100 includes a first housing 110 and a second housing 120; the first housing 110 and the second housing 120 are fixedly connected and enclosed to form an accommodating cavity 101, and the first opening 102 is set On the first housing 110 , the imaging device 600 is disposed on the second housing 120 .

In this embodiment, the module casing 100 includes a first casing 110 and a second casing 120. In practical applications, the two casings can be made separately. After the structure is assembled, the first casing 110 and the second casing 120 are fixed, which can effectively reduce the difficulty of assembling the camera module.

The fixing method between the first housing 110 and the second housing 120 may be welding, clamping or fastener connection, etc., which is not specifically limited here.

Optionally, the module housing 100 further includes a third housing 130, the third housing 130 is disposed in the accommodating cavity 101, and the third housing 130 is fixedly connected to the second housing 120;

The guide seat 300 is connected to the third housing 130 , and there is a gap between the guide seat 300 and the third housing 130 in a direction perpendicular to the first direction, and the push block assembly 400 is slidably disposed in the gap.

In this embodiment, the first housing 110 and the third housing 130 may be fixedly connected to the second housing 120 respectively, and the first housing 110 may be sleeved outside the third housing 130 . In this way, the first housing 110 may have a larger space to form a protective effect on various structures in the accommodating cavity 101; Assembly provides attachment.

In some examples, where the driving assembly 500 includes the electromagnetic structure 510 , the electromagnetic structure 510 may be disposed on the third housing 130 . Since the push block assembly 400 is disposed in the gap between the third housing 130 and the guide seat 300, the magnetic force generated by the electromagnetic structure 510 disposed on the third housing 130 can effectively act on the push block assembly 400, thereby ensuring The reliability of the displacement driving of the push block assembly 400.

The camera module provided by the embodiment of the present application will be described below in conjunction with a specific application example.

As shown in FIGS. 7 to 9 , FIG. 7 is an exploded view of the camera module in this application example, and FIGS. 8 and 9 are structural schematic diagrams of the assembled camera module after removing the upper cover of the housing. It can be seen that the camera module can include a base (ie, the second housing 120), an imaging device 600, a housing lower cover (ie, the third housing 130), a lens module 700, a guide seat 300, four guide blocks 410, an electromagnetic The structure 510 , the push block bracket 420 assembly (including the push block bracket 420 and the adjustment ring 430 ), the upper cover of the housing (namely the first housing 110 ) and the liquid lens 200 .

Wherein, the base is fixedly connected with the lower cover of the housing to protect and fix the components in the housing. The imaging device 600 includes an image sensor 610 and a circuit board 620. The image sensor 610 is arranged on the base, and the four sides of the base are provided with Hall sensors (not shown in the figure), which are used to sense when each guide block 410 is displaced. The change of the magnetic field determines the displacement of the guide block 410 , and feeds back to the relevant controller to realize precise control of the displacement of the guide block 410 .

Both the housing lower cover and the housing upper cover can be connected with the base, thereby constituting the module housing 100 of the camera module, which can protect and fix the components in the housing, constrain the displacement of the push block bracket 420, and the like.

The guide seat 300 can be fixedly connected with the lower lens cover, and the first through hole 320 inside can play the role of fixing the lens module 700. There is a guide groove 311 with trapezoidal cross-section around it, which is used for sliding connection with the guide block 410, so that the guide block 410 can only move back and forth along the Z direction (corresponding to the first direction).

The electromagnetic structure 510 and the magnet 520 can form an electromagnet 520 module, corresponding to the above-mentioned driving assembly 500 . The electromagnetic structure 510 can be attached to the lower cover of the housing and connected to the circuit board 620. The magnet 520 is arranged on the guide block 410, and the magnitude of the driving current is controlled to drive and control the change of the magnetic field of the electromagnetic structure 510, so that the guide block 410 and the magnet 520 with displacement work.

The guide block 410 includes a second guide portion 411 with a trapezoidal cross section, and the magnet 520 can be embedded in the guide block 410 . The guide block 410 is fixed to the push block bracket 420 , and the four guide blocks 410 are evenly distributed in the four guide grooves 311 on the four sides of the guide seat 300 . The magnetic field generated when the electromagnetic structure 510 is in operation and the magnet 520 in the guide block 410 generate a Z-direction magnetic field force, so that the entire push block assembly 400 is oriented to move and generate displacement to control the deformation of the liquid lens 200 .

The push block assembly 400 may include a guide block 410 , a push block bracket 420 and an adjustment ring 430 connected in sequence. Wherein, the adjustment ring 430 can be in contact with the liquid lens 200 and push the liquid lens 200 to generate interference deformation, thereby changing the focal length of the liquid lens 200 . Between the push blocks and the adjusting ring 430, the displacement of the guide block 410 can be evenly transmitted to the liquid lens.

The upper cover of the casing can be fixedly connected with the base, and can fix the liquid lens 200 . The liquid lens 200 may include a rigid cover and a liquid lens, and the rigid cover may be connected to the upper cover of the casing; the liquid lens may be in movable contact with the adjustment ring 430, and the outer contour may be changed under the drive of the adjustment ring 430 to further Realize the zoom effect.

As shown in FIG. 6 and FIG. 10 , FIG. 6 and FIG. 10 may be principle diagrams for achieving focusing based on changes in the outer contour of the liquid lens 200 . In the state shown in FIG. 6 , the outer contour of the liquid lens 200 can be in a free state, the curvature of the liquid lens is small, and the focal length is relatively long. In the state shown in FIG. 10 , the four guide blocks 410 have the same upward displacement, so that the periphery of the liquid lens is uniformly deformed, the curvature increases, and the focal length is relatively short. Through the deformation of the liquid lens 200, its focal length can be changed, thereby realizing the focusing function.

As shown in FIG. 6 and FIG. 11 , FIG. 6 and FIG. 11 may be schematic diagrams for implementing anti-shake based on changes in the outer contour of the liquid lens 200 . In the state shown in FIG. 6 , the liquid lens 200 has a symmetrical cross section, and at this time, the focal point may be on the optical axis. However, in the state shown in FIG. 11 , the displacements of the four guide blocks 410 in the first direction are not equal, so that the cross-section of the liquid lens 200 becomes asymmetrical, and the focal point is shifted relative to the optical axis, thereby helping to realize anti- shake function.

Based on the above application examples, it can be seen that the camera module provided by the embodiment of the present application can limit the position of the guide block 410 in the direction perpendicular to the optical axis through the setting of the guide seat 300, so that the position of the guide block 410 in the direction of the optical axis can be restricted. The displacement can cause the liquid lens 200 to produce a relatively definite deformation, effectively improving the accuracy of focusing and zooming.

An embodiment of the present application also provides an electronic device, including the above-mentioned camera module.

It should be noted that the implementation of the above-mentioned embodiment of the camera module is also applicable to the embodiment of the electronic device, and can achieve the same technical effect, and will not be repeated here.

Among them, the electronic device can be a mobile phone, a tablet computer, a notebook computer, a handheld computer, a vehicle electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a personal digital assistant (personal digital assistant, PDA) etc.

In the description of this specification, references to the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific examples," or "some examples" are intended to mean that the implementation A specific feature, structure, material, or characteristic described by an embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present application. The scope of the application is defined by the claims and their equivalents.

Claims

A camera module, comprising:

A module case, the module case has an accommodating cavity and a first opening communicating with the accommodating cavity;

a liquid lens, the liquid lens is fixedly connected to the module housing at the first opening;

a guide seat, the guide seat is arranged in the accommodating cavity, and the guide seat is fixedly connected with the module housing;

a push block assembly, the push block assembly is connected with the guide seat, and the push block assembly reciprocates along the guide seat in a first direction to drive the deformation of the liquid lens, and the first direction is the the axial direction of the first opening;

a drive assembly, the drive assembly is connected to the push block assembly;

An imaging device, the imaging device is arranged at one end of the first opening.
The camera module according to claim 1, wherein the guide seat includes N first guide parts, where N is a positive integer;

The push block assembly includes N second guide parts, the N second guide parts are in one-to-one correspondence with the N first guide parts, and one of the second guide parts slides with one of the first guide parts connect.
The camera module according to claim 2, wherein the first guide part is specifically a guide groove; in the direction along the bottom surface of the groove to the notch, the groove width of the guide groove gradually decreases; the second The cross-sectional shape of the guide part matches the cross-sectional shape of the guide groove.
The camera module according to claim 2, wherein the push block assembly further comprises an adjustment ring and N push block brackets; one end of the adjustment ring is connected to the liquid lens, and the other end of the adjustment ring is connected to the liquid lens. The N second guiding parts are connected;

The N push block brackets correspond to the N second guide parts one by one, and one second guide part is connected to the other end of the adjustment ring through one push block bracket.
The camera module according to claim 1, wherein the camera module further comprises a position sensor arranged opposite to the push block assembly, and the position sensor is arranged on the module housing.
The camera module according to claim 1, wherein the camera module further comprises a lens module, the guide seat is provided with a first through hole, and the lens module is at least partly arranged in the first through hole. hole, and the lens module is arranged between the imaging device and the liquid lens.
The camera module according to claim 1, wherein the imaging device comprises an image sensor and a circuit board;

The image sensor is disposed in the accommodating cavity, one end of the circuit board is electrically connected to the image sensor, and the other end of the circuit board passes through the module housing.
The camera module according to claim 1, wherein the module casing comprises a first casing and a second casing; the first casing and the second casing are fixedly connected and enclosed to form a The accommodating cavity, the first opening is disposed on the first housing, and the imaging device is disposed on the second housing.
The camera module according to claim 8, wherein the module casing further comprises a third casing, the third casing is arranged in the accommodating cavity, and the third casing is connected to the The second housing is fixedly connected;

The guide seat is connected to the third housing, and there is a gap between the guide seat and the third housing in a direction perpendicular to the first direction, and the push block assembly is slidably disposed on in the gap.
An electronic device, comprising the camera module according to any one of claims 1-9.