CN110740235A - Electronic equipment and camera module thereof - Google Patents

Abstract

The application relates to electronic equipment and a camera module thereof, wherein the camera module comprises an optical sensor, a lens, a liquid lens, a second lens and an extrusion structure, the lens, the liquid lens and the second lens are sequentially arranged along the imaging optical axis of the camera module towards the direction far away from the optical sensor, and the extrusion structure is used for extruding the liquid lens to adjust the direction of light emitted by the liquid lens.

Description

Electronic equipment and its camera module

technical field

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

Background technique

Shooting is a common function of electronic devices such as mobile phones and tablet computers, and users have higher and higher requirements for the quality of the captured images. Therefore, the design of anti-shake and auto-focusing when shooting electronic devices becomes particularly important.

The traditional camera module realizes the switching between near focus and far focus through the movement of the lens. As the size of the optical sensor used for imaging increases, the size of the lens also increases, resulting in a large volume of the camera module and affecting electronic equipment. It is urgent to develop a camera module with a compact structure and better focusing effect.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a camera module with a compact structure, good focusing and anti-shake effect, and an electronic device including the camera module.

On the one hand, the present application provides a camera module, including:

The light sensor has a photosensitive area, and the surface of the photosensitive area is substantially perpendicular to the imaging optical axis of the camera module;

a first lens, a liquid lens and a second lens, the first lens, the liquid lens and the second lens are sequentially arranged along the imaging optical axis of the camera module toward a direction away from the light sensor;

The squeezing structure is used for squeezing the liquid lens to adjust the direction of the light emitted by the liquid lens.

In one embodiment, the liquid lens includes a flat closed capsule and a liquid filled with the closed capsule, and light can penetrate the liquid from one side of the closed capsule and exit from the other side , the closed capsule can be deformed together with the liquid when it is squeezed.

In one embodiment, the liquid lens includes a light incident surface and a light exit surface, the light incident surface is located on a side of the liquid lens facing the second lens, and the light exit surface is located on a side of the liquid lens. On the side facing the first lens, at least one of the light incident surface and the light exit surface is a convex surface, and the liquid lens can change the curvature radius of the convex surface under the extrusion of the extrusion structure.

In one embodiment, the camera module further includes a mirror base and a mounting plate disposed in the mirror base, the first lens and the second lens are both installed in the mirror base, and are respectively Located on both sides of the mounting plate, the liquid lens is connected to the mounting plate.

In one embodiment, a filter is arranged in the lens holder, and the filter is located between the first lens and the light sensor.

In one embodiment, the camera module includes a circuit board, the light sensor is disposed on the circuit board, the mirror base includes a first support and a second support, the first support and the The second supports are connected to each other and have a hollow shell-like structure, the first supports are connected with the circuit board, and the light sensor is covered inside; into the light-passing hole of the light sensor, the filter is arranged at the light-passing hole, the second support is provided with a first mounting hole opposite to the light-passing hole, the first The lens is mounted on the first mounting hole.

In one embodiment, the first support and the second support are injection-molded into one body, the diameter of the light-passing hole is smaller than the diameter of the first installation hole, and the size of the optical filter is smaller than that of the first mounting hole. The diameter of the first mounting hole is larger than the diameter of the light-passing hole.

In one embodiment, the lens mount further includes a third mount, the third mount is provided with a second mounting hole, and the second lens is mounted in the second mounting hole.

In one embodiment, the second support and the third support are injection-molded into one body, and a mounting position is formed at the connection between the second support and the third support, and the mounting plate Installed in the installation card position.

In one embodiment, the extrusion structure is disposed in the lens holder, the extrusion structure includes a magnet, an extrusion base and a coil, the magnet is fixed on the inner wall of the lens base, and the extrusion structure is The pressing seat is connected with the mirror seat through the elastic sheet, the coil is connected with the pressing seat, and when the coil is energized, the pressing seat can be driven to move relative to the mirror seat under the action of the magnetic field of the magnet , so that the squeeze seat squeezes the liquid lens.

In one embodiment, the extrusion structure includes a plurality of sets of correspondingly arranged magnets and coils, wherein the coils are arranged along the peripheral side of the extrusion seat.

On the other hand, the present application provides an electronic device, comprising a detection module, a driving module and the above-mentioned camera module, the detection module is used to detect the shaking information of the camera module, and the driving module is used to detect the shaking information of the camera module according to the The jitter information modulates the squeezing structure so that the squeezing structure squeezes the liquid lens.

The electronic device and its camera module of the present application, the camera module includes a first lens and a second lens, and the liquid lens disposed between the first lens and the second lens is deformed when squeezed by the extrusion structure, so as to change The direction of light propagation, and then meet the needs of focusing and anti-shake. With this liquid lens squeezing method, there is no need to move the lens, so that a faster dimming effect can be obtained, and in this structure, since there is no need to move the lens, the squeezing structure provides a tiny force to cause the liquid lens to deform , so that the camera module can still meet the needs of focusing and anti-shake while maintaining a compact structure.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

1 is a perspective view of an electronic device provided by an embodiment;

FIG. 2 is a schematic diagram of light incident on a light sensor along an optical axis in a camera module of an electronic device according to an embodiment;

3 is a schematic structural diagram of a camera module according to an embodiment;

4 is a schematic structural diagram of a camera module according to another embodiment, when the second support and the third support of the mirror base are formed into one body;

5 is a schematic structural diagram of an extrusion structure in a camera module according to an embodiment;

6 is a schematic diagram of the arrangement of multiple sets of correspondingly arranged coils of the extrusion structure relative to the extrusion seat in the camera module of an embodiment;

7 is a schematic diagram of the arrangement of multiple sets of correspondingly arranged coils of the extrusion structure relative to the extrusion seat in the camera module of another embodiment.

Detailed ways

In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the related drawings. The preferred embodiments of the present application are shown in the accompanying drawings. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough and complete understanding of the disclosure of this application is provided.

It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for the purpose of illustration only and do not represent the only embodiment.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the present application are for the purpose of describing particular embodiments only, and are not intended to limit the present application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

For the electronic device in an embodiment of the present application, the electronic device may be a mobile phone, a tablet computer, a notebook computer, a smart bracelet, a smart watch, a smart helmet, and smart glasses. The embodiment of the present invention will be described by taking the electronic device as a mobile phone as an example. It can be understood that the specific form of the electronic device may be other, which is not limited herein.

Please refer to FIG. 1 , the electronic device includes a main body 100 and a camera module 200 . The camera module 200 is disposed on the main body 100 and is used for capturing images.

The main body 100 includes a casing 101 and a display screen 110 connected to the casing 101 . An accommodation space is formed between the casing 101 and the display screen 110 , and the accommodation space is used to accommodate the internal parts of the electronic device. Internal parts play a protective role. The casing 101 may be the back cover of the electronic device, and cover parts such as the battery and the main board of the electronic device.

The camera module 200 can be installed on the casing 101, and when shooting is required, the camera module 200 can receive external light to perform imaging.

As shown in FIG. 2 , the camera module 200 includes a light sensor 201 capable of receiving light for imaging. The light sensor 201 has a photosensitive area 201a, and the photosensitive area 201a can generate a photoelectric effect when irradiated by light to perform imaging. Types of the light sensor 201 may include a CCD (Charge Coupled) element, a CMOS (Complementary Metal Oxide Conductor) device, a photodiode, and the like. In terms of color, the light sensor 201 may be a color light sensor, a monochromatic light sensor, an infrared light sensor, a grayscale sensor, and the like.

The camera module 200 has an imaging optical axis 200 b , and the imaging optical axis 200 b is defined by the optical device inside the camera module 200 . The surface of the photosensitive area 201a of the light sensor 201 is approximately perpendicular to the imaging optical axis 200b. Specifically, when the camera module 200 is shooting, the external light enters the photosensitive area 201a of the optical sensor 201 along the direction of the imaging optical axis 200b, so that the The photosensitive region 201a is irradiated with light to form an image. It should be pointed out here that “along the imaging optical axis 200b of the camera module 200” does not mean that the propagation directions of all the light rays incident on the light sensor 201 are completely coincident with or parallel to the imaging optical axis 200b. For example, referring to FIG. 2, among the light rays incident on the light sensor 201 along the imaging optical axis 200b of the camera module 200, some of the light rays are coincident with or parallel to the imaging optical axis 200b, and some of the light rays are in the direction of the imaging optical axis 200b. At a certain angle, as long as these light rays can enter the camera module 200 and illuminate the photosensitive area 201 a of the light sensor 201 to meet the imaging requirements of the light sensor 201 .

In some embodiments, the camera module 200 may be fixedly disposed in the casing 101, and the casing 101 is provided with a light-transmitting component or a light-transmitting area that can allow light from outside the casing 101 to enter the camera module 200, so as to adapt to the The camera module 200 is required for shooting. The light-transmitting component can be transparent plastic or transparent glass. The casing 101 can also be partially made of transparent material to form a light-transmitting area, or all of the light-transmitting material can be made of light-transmitting material, so that light can penetrate into the electronic device from the outside and enter the camera module. The light incident surface 200a of the group 200 is adapted to the shooting needs of the camera module 200 .

In other embodiments, the camera module 200 may also be disposed on the body 100 in a movable form. For example, the main body 100 is provided with a receiving groove for receiving the camera module 200, and the camera module 200 moves relative to the main body 100 and can be selectively located in the receiving state and the extended state. In the receiving state, the camera module 200 is located in the receiving groove, At this time, the camera module 200 is blocked by the outer casing 101 of the main body 100 , so as to prevent the camera module 200 from being exposed and damaging the overall appearance of the electronic device. In the extended state, the camera module 200 protrudes from the receiving slot, so that external light can enter the camera module 200 through the imaging optical axis 200b of the camera module 200 to meet the imaging needs of the camera module 200 .

It should be noted that the camera module 200 can be used for front-facing photography, for example, in the electronic device shown in FIG. In other embodiments, the setting position of the camera module 200 in the main body 100 is adapted and adjusted so that the light incident surface 200a faces away from the side of the displayable area 110a of the display screen 110, so that the camera module 200 can be used as the rear For shooting, the shooting angle of the camera module 200 relative to the main body 100 is not limited here.

With reference to FIG. 3 , in some embodiments, the camera module 200 includes a first lens 202 , a liquid lens 203 , a second lens 204 and an extrusion structure 205 .

The first lens 202, the liquid lens 203 and the second lens 204 are sequentially arranged along the imaging optical axis 200b of the camera module 200 in a direction away from the light sensor 201 (ie, the direction of the arrow V shown in FIG. 3), so that the external light can The imaging optical axis 200b of the camera module 200 passes through the second lens 204, the liquid lens 203 and the first lens 202 in sequence, and enters the light sensor 201, so that the photosensitive area 201a of the light sensor 201 is imaged when exposed to light, so as to adapt to the Shooting needs.

The squeezing structure 205 is used for squeezing the liquid lens 203 to adjust the direction of the light emitted by the liquid lens 203 . To be precise, the liquid lens 203 is deformed under the extrusion of the extrusion structure 205, so that when the light passes through the liquid lens 203, the liquid lens 203 in different shapes under the extrusion deformation will condense or condense the light to different degrees. The astigmatism effect, and then the extrusion of the liquid lens 203 by the extrusion structure 205 can adjust the direction of the light emitted by the liquid lens 203, and the light that finally enters the photosensitive area 201a of the light sensor 201 and is imaged is always It is the light adjusted by the liquid lens 203. Therefore, from the perspective of imaging performed by the light sensor 201, the light adjustment by the liquid lens 203 will enable the light sensor 201 to obtain different shooting fields of view. For example, when the light is properly focused by the liquid lens 203, the light emitted from the liquid lens 203 enters the photosensitive area 201a of the light sensor 201 after passing through the first lens 202. With the different degrees of focusing of the light by the liquid lens 203, the light is also That is, the focal length is adjusted so that the photosensitive area 201a of the light sensor 201 captures light from a distant scene to achieve long-range shooting, or the photosensitive area 201a of the photo sensor 201 captures light from a near scene to achieve close-up photography.

When the liquid lens 203 disposed between the first lens 202 and the second lens 204 is squeezed and deformed by the squeezing structure 205, the liquid lens 203 is actually only deformed by being squeezed, and its position does not change. That is, this squeeze adjustment method can change the light propagation direction without moving the liquid lens 203 to meet the needs of focusing and anti-shake. Since the liquid lens 203 does not need to be moved during dimming, but only needs to be deformed by the extrusion structure 205, its response is fast and sensitive, so that a faster dimming effect can be obtained. At the same time, the extrusion structure 205 provides a small force The liquid lens 203 can be deformed, so that the camera module 200 can still provide better focusing and anti-shake effects under the condition of maintaining a compact structure.

As mentioned above, the imaging optical axis 200b is defined by the optical device inside the camera module 200 . Specifically, in this embodiment, the optical axis of the first lens 202 and the second lens 204 is the forming optical axis of the camera module 200 . Specifically, the first lens 202 and the second lens 204 are along the imaging optical axis 200b of the camera. The arrangement means that the optical axes of the first lens 202 and the second lens 204 are coaxial and jointly define the imaging optical axis 200 b of the camera module 200 .

The first lens 202 includes a lens group formed by a plurality of convex lenses and/or concave lenses, so as to use the lens group to perform optical processing such as focusing or filtering light. Correspondingly, the second lens 204 includes a lens group formed by a plurality of convex lenses and/or concave lenses, so as to realize focusing or divergence of the light emitted by the liquid lens 203 .

Taking the second lens 204 as an example, in some embodiments, the second lens 204 includes a convex lens and a concave lens arranged along the optical axis, and the light rays passing through the liquid lens 203 will be focused together after incident on the convex lens of the second lens 204. , and then diverge when passing through the concave lens. In this way, the stray light in different frequency bands in the light can be separated from the light incident on the photosensitive area 201a of the light sensor 201, so as to prevent these stray light from entering the photosensitive area of the light sensor 201. 201a and affect the imaging effect.

It should be noted that the types, numbers and compositions of lenses in the first lens 202 and the second lens 204 may be structural forms known in the prior art, and may also be adjusted according to actual light processing needs. The specific structural forms of the first lens 202 and the second lens 204 are not limited here, as long as the liquid lens 203 can process the propagation direction of the light between the two, so that the light finally incident on the photosensitive area 201a of the light sensor 201 It can meet the needs of imaging.

3, in some embodiments, the liquid lens 203 includes a flat closed capsule 203a and a liquid 203b filled with the closed capsule 203a, and light can penetrate the liquid 203b from one side of the closed capsule 203a When the closed capsule 203a is squeezed, it can be deformed together with the liquid 203b, and then the direction of the emitted light can be adjusted to meet the needs of focusing and anti-shake.

It should be noted that, the overall shape of the liquid lens 203 may be a convex lens, which has a certain light condensing effect.

Take the structure of the camera module 200 shown in FIG. 3 as an example. The liquid lens 203 in the camera module 200 includes a light incident surface 2031 and a light exit surface 2032. The light incident surface 2031 is located on the side of the liquid lens 203 facing the second lens 204, and the light exit surface 2032 is located on the liquid lens 203 facing the first lens 202. On one side, the light emitting surface 2032 is convex. Therefore, a convex lens is constructed by utilizing the convex surface of the light emitting surface 2032 to condense the light emitted by the second lens 204 .

In another embodiment, both the light incident surface 2031 and the light exit surface 2032 are convex surfaces, that is, the liquid lens 203 is in the form of a biconvex lens. Of course, in other embodiments, only the light incident surface 2031 is a convex surface, and the light exit surface 2032 is a flat surface, which can also have a better light condensing effect.

In a word, as the light incident surface 2031 and the light exit surface 2032 of the liquid lens 203, at least one of them is a convex surface, so as to have a condensing effect on the light beam. It should be pointed out here that no matter whether the light incident surface 2031 or the light exit surface 2032 is a convex surface, in the technical solution of the present application, changing the direction of the outgoing light by squeezing and deforming the liquid lens 203 is actually changing the curvature radius of the convex surface. Specifically, the liquid lens 203 can change the curvature radius of the convex surface under the extrusion of the extrusion structure 205 .

Taking the camera module 200 shown in FIG. 3 as an example, the light emitting surface 2032 is a convex surface, and the extrusion structure 205 squeezes the side where the light emitting surface 2032 of the liquid lens 203 is located, so that the convex surface corresponding to the light emitting surface 2032 varies. The degree of deformation, that is, the curvature radius of the convex surface changes, so that the light rays are refracted at the convex surface when exiting from the liquid lens 203, and the curvature radius of the convex surface changes, and the direction of the refracted light also changes.

It should be pointed out that the "change in the curvature radius of the convex surface" includes the change in the curvature radius corresponding to the convex surface as a standard spherical surface, and also includes the convex surface is composed of many miniature spherical surfaces. The radius of curvature of the sphere changes. For example, when the squeezing structure 205 squeezes the side where the light-emitting surface 2032 is located, it only squeezes a part of the light-emitting surface 2032 , and the other part is only slightly changed because the liquid lens 203 is squeezed as a whole. Or there is no change, then relatively speaking, the area where the light-emitting surface 2032 is directly squeezed by the extrusion structure 205 will have more obvious deformation, and the propagation direction of the light will change greatly when it exits from the surface corresponding to this part of the area. The light emitted along the imaging optical axis 200b of the camera will hardly be affected. For another example, the extrusion structure 205 squeezes one side of the light-emitting surface 2032 to make the other side relatively expand and bulge, so that the convex surface corresponding to the light-emitting surface 2032 is deflected relative to the imaging optical axis 200b as a whole, and then the photosensitive surface of the light sensor 201 is exposed. When imaging the area 201a, the imaging field of view also scans with the deflection of the convex surface relative to the imaging optical axis 200b, and then this adjustment method can be used to compensate for image shake caused by vibration during shooting to achieve optical image stabilization.

It should be noted that, in the embodiment in which the liquid lens 203 includes a flat closed capsule 203a and a liquid 203b filled with the closed capsule 203a, the light incident surface 2031 and the light exit surface 2032 are formed on the surface of the closed capsule 203a, specifically Ground, the surface of the area corresponding to the light entering the closed capsule 203a is the light incident surface 2031 , and the surface of the area corresponding to the light exiting the closed capsule 203a is the light exit surface 2032 . The light can be refracted on the light-emitting surface 2032 after passing through the liquid lens 203, which means that the light can enter the closed capsule 203a and exit from the closed capsule 203a after passing through the liquid 203b.

The camera module 200 further includes a lens seat 206 and a mounting plate 207 arranged in the lens seat 206. The first lens 202 and the second lens 204 are both installed in the lens seat 206, and are located on both sides of the mounting plate 207, respectively. 203 is connected to the mounting plate 207 . The lens mount 206 is used as a mounting carrier for the first lens 202 and the second lens 204, which is convenient for structural integration, so that when the camera module 200 is processed, the first lens 202 and the second lens 204 can be assembled into one through the lens mount 206 to realize The first lens 202 and the second lens 204 are installed and fixed so as to be assembled to the camera module 200 as a whole.

It should be noted that although the mounting plate 207 is used as a mounting carrier for the liquid lens 203 , it does not affect the incident light from the second lens 204 to the liquid lens 203 by itself. The mounting plate 207 can be made of a transparent glass plate or a plastic plate, and its light transmittance is above 70%, that is to say, at least 70% of the light emitted from the second lens 204 can pass through the mounting plate 207, thereby Enough light enters the liquid lens 203 and enters the photosensitive area 201 a of the light sensor 201 from the first lens 202 . In addition, the mounting plate 207 may not be made of a transparent material, but a through hole for the light to pass through is opened on the mounting plate 207. After the liquid lens 203 is mounted and fixed by the mounting plate 207, the light can still be incident through the through hole. to Liquid Lens 203. As for the structural form of the mounting plate 207 , as long as it meets the installation requirements of the liquid lens 203 and meets the requirements of light entering the liquid lens 203 , details are not described herein again.

In some embodiments, the lens holder 206 is provided with a filter 208, the filter 208 is located between the first lens 202 and the light sensor 201, and is used to filter the light emitted by the first lens 202, so that the incident light The light of the sensor 201 is free from stray light interference, thereby obtaining a better imaging effect.

The camera module 200 includes a circuit board 200c, and the light sensor 201 is disposed on the circuit board 200c. For example, the light sensor 201 is mounted on the circuit board 200c in the form of a patch. In addition, the light sensor 201 can also be adhered to the circuit board 200c by glue. It should be noted that the circuit board 200c may be a rigid circuit board or a flexible circuit board, and the type of the circuit board 200c is not limited herein. It can be understood that a circuit can be printed on the circuit board 200c to be electrically connected with the light sensor 201, so that the electrical signal generated when the photosensitive area 201a of the light sensor 201 is illuminated to produce a photoelectric effect can be transmitted to the circuit board 200c. Corresponding controller, image processor, memory and other functional modules.

Continuing to refer to FIG. 3 , the mirror holder 206 includes a first holder 2061 , a second holder 2062 and a third holder 2063 .

The first support 2061 and the second support 2062 are connected to each other and have a hollow shell-like structure. The first support 2061 is connected to the circuit board 200c and covers the light sensor 201 inside. The first support 2061 has a light-passing hole 206a for light to pass through to the light sensor 201, and the filter 208 is disposed at the light-passing hole 206a, so that when the light passes through the light filter 208, the light will be filtered by the light filter 208, thereby Get the light you need to take an image. The second support 2062 defines a first mounting hole 206b opposite to the light-passing hole 206a, and the first lens 202 is mounted in the first mounting hole 206b, so that the light emitted from the first lens 202 can enter the filter 208, and After being optically filtered by the filter 208 , it is incident on the light sensor 201 .

The first support 2061 and the second support 2062 are injection-molded into one body, so as to improve the structural integration without other connecting parts, and in this structural form, the first support 2061 and the second support 2062 can form a stable combination , it is not easy to loosen.

In this embodiment, the diameter of the light-passing hole 206a is smaller than the diameter of the first installation hole 206b, and the size of the optical filter 208 is smaller than the diameter of the first installation hole 206b and larger than the diameter of the light-passing hole 206a, so that the optical filter 208 can It can freely pass through the first mounting hole 206b, so that when the first support 2061 and the second support 2062 are integrally formed, the optical filter 208 can also be conveniently installed at the light-transmitting hole 206a.

A stepped groove is formed at the light-passing hole 206a, and the optical filter 208 is installed and fixed in the stepped groove. In other embodiments, the stepped groove may not be provided, and the optical filter 208 is adhered to the side wall of the light-passing hole 206a by glue.

In some embodiments, the third support 2063 is provided with a second mounting hole 206c, and the second lens 204 is mounted in the second mounting hole 206c. Since the liquid lens 203 needs to be located between the first lens 202 and the second lens 204 , the third support 2063 is connected to the side of the second support 2062 away from the light sensor 201 . For example, in the camera module 200 shown in FIG. 3 , the mounting plate 207 is connected to the side of the second support 2062 away from the light sensor 201 , and the third support 2063 is connected to the mounting plate 207 and is located opposite to the mounting plate 207 On one side of the second support 2062, since the liquid lens 203 is mounted on the mounting plate 207, the first lens 202 and the second mounting holes 206c of the third support 2063 are installed in the first mounting holes 206b of the second support 2062 When the second lens 204 is installed, the liquid lens 203 will be located between the first lens 202 and the second lens 204 .

It should be noted that the first lens 202 may be connected to the second support 2062 by means of screw connection, that is to say, the first mounting hole 206b on the second support 2062 is a threaded hole. The outer periphery of the lens 202 is provided with an external thread matched with the first installation hole 206b, so that the first lens 202 can be screwed into the first installation hole 206b. In this threaded connection mode, the first lens 202 can be mounted to the second support 2062 by screwing it. At the same time, this screwing method also fulfills a certain focus adjustment requirement, so that the first lens 202 The distance from the light sensor 201 is adjusted within an appropriate range to meet the imaging requirements of the photosensitive area 201 a of the light sensor 201 .

The first lens 202 can also be mounted on the second support 2062 by means of snap connection. The second lens 204 can be connected to the third support 2063 in the same connection manner as the first lens 202, which will not be repeated here.

In some embodiments, the second support 2062 and the third support 2063 are injection molded into one piece. As shown in FIG. 4 , after the second support 2062 and the third support 2063 are injection-molded into one body, the connection between the second support 2062 and the third support 2063 forms a mounting position 206d, and the mounting plate 207 is installed in the mounting position 206d, in this structural form, there is no need to connect the second support 2062 and the third support 2063 by means of screws or gluing, which simplifies the assembly and reduces the production cost. It is stable and not easy to loosen, so as to ensure that the relative position between the first lens 202 and the second lens 204 will not be affected by the loosening of the second support 2062 and the third support 2063, so as to effectively protect the camera module 200 Image stabilization while shooting.

It should be noted that the extrusion structure 205 is disposed in the lens holder 206, and the extrusion structure 205 has various structural forms, as long as the liquid lens 203 can be squeezed and deformed to adjust the light exit direction.

For example, in some embodiments, the extrusion structure 205 adopts a pneumatic extrusion method. Specifically, the extrusion structure 205 includes an inflation and deflation element and an annular airbag, and the annular airbag is arranged around the liquid lens 203 along the direction of the imaging optical axis 200b. The inflating and deflating element inflates or deflates the annular airbag, so that the annular airbag expands or contracts to different degrees, so that the liquid lens 203 is squeezed by the expansion and contraction motion of the annular airbag, so as to realize the regulation of the light emitted by the liquid lens 203 . Of course, the annular airbag can also be replaced by a non-annular one, for example, a plurality of airbags are evenly distributed on the peripheral side of the liquid lens 203 around the imaging optical axis 200b. The extrusion form of the liquid lens 203 is made richer, so as to obtain a richer dimming effect.

In other embodiments, the extrusion structure 205 can also directly use a miniature telescopic cylinder, and the liquid lens 203 is squeezed by the telescopic rod of the telescopic cylinder, which can also realize the dimming of the liquid lens 203 to adapt to focusing and anti-shake. need.

In addition, in other embodiments, the squeezing structure 205 may also use electromagnetic induction to generate motion force to squeeze the liquid lens 203 .

Specifically, as shown in FIG. 5 , the extrusion structure 205 includes a magnet 2051 , an extrusion seat 2052 and a coil 2053 . The squeeze seat 2052 is connected with the lens seat 206 through the elastic sheet 209, so that when the squeeze seat 2052 does not squeeze the liquid lens 203, the elastic sheet 209 can keep the squeeze seat 2052 reset to the initial state, and only the squeeze seat 2052 is subjected to the coil 2053 When the mirror base 206 moves relative to the magnetic force of the magnet 2051, the magnetic force forces the elastic piece 209 to deform.

In some embodiments, the magnet 2051 is fixed on the inner wall of the lens holder 206, the coil 2053 is connected to the extrusion base 2052, and the coil 2053 can drive the extrusion base 2052 to move relative to the lens base 206 under the action of the magnetic field of the magnet 2051 when the coil 2053 is energized, so that the squeeze seat 2052 squeezes the liquid lens 203 . Disposing the coil 2053 on the squeeze seat 2052 can reduce the weight of the squeeze seat 2052 as much as possible, so that the driving force provided by the magnetic action of the coil 2053 and the magnet 2051 can drive the squeeze seat 2052 to move relative to the lens seat 206 , so that the The liquid lens 203 is squeezed.

In other embodiments, the coil 2053 can also be disposed on the inner wall of the mirror base 206 , correspondingly, the magnet 2051 is connected with the pressing base 2052 , in this way, the magnetic force between the coil 2053 and the magnet 2051 can also be used to achieve The squeeze seat 2052 moves relative to the lens seat 206. Considering that the magnet 2051 is connected to the squeeze seat 2052 and when the squeeze seat 2052 squeezes the liquid lens 203, the magnet 2051 moves together with the squeeze seat 2052, in order to make the squeeze seat 2052 move together. 2052 can move lightly, and the magnet 2051 can be made of NdFeB magnets with strong magnetic properties and small size.

As shown in FIG. 6 and FIG. 7 , the extrusion structure 205 includes a plurality of sets of correspondingly arranged magnets 2051 and coils 2053 , wherein the coils 2053 are arranged along the peripheral side of the extrusion seat 2052 . It should be noted that the arrangement of the plurality of sets of correspondingly arranged magnets 2051 and coils 2053 in the camera module 200 may be as shown in FIG. Alternatively, as shown in FIG. 7 , various correspondingly arranged magnets 2051 and coils 2053 are distributed at the four corners of the mirror base 206 in the shape of a rectangular block. It can be understood that, no matter which setting form is used, under the action of a variety of correspondingly arranged magnets 2051 and coils 2053, the spatial posture of the pressing seat 2052 can be flexibly adjusted to squeeze the liquid lens 203 adaptively.

Taking the extrusion structure 205 shown in FIG. 6 including four sets of correspondingly arranged magnets 2051 and coils 2053 as an example, when only the liquid lens 203 needs to be squeezed to achieve shooting focus, power can be supplied to the four sets of coils 2053 at the same time, so that the The four sets of coils 2053 respectively synchronously drive the liquid lens 203 to move along the imaging optical axis 200b of the camera module 200 under the magnetic field of the corresponding magnet 2051, thereby realizing focusing. When the liquid lens 203 needs to be used for anti-shake, it is necessary to use the liquid lens 203 to deflect the outgoing light relative to the imaging optical axis 200b of the camera module 200 by a certain angle, so as to offset the jitter shift of the captured image caused by the vibration. , only part of the coil 2053 needs to be energized, so that the liquid lens 203 deflects the outgoing light to the side that cancels the shake of the captured image.

Since the movement of the coil 2053 in the magnetic field is related to the direction flowing through the coil 2053 , in some embodiments, the coil 2053 can also be controlled to drive the extrusion seat 2052 to move in the opposite direction by adjusting the current direction of the coil 2053 . For example, as shown in FIG. 5 , when the pressing seat 2052 needs to be deflected to the right relative to the imaging optical axis 200b, the coil 2053 on the left side is supplied with a current in the first direction, so that the coil 2053 drives the left side of the pressing seat 2052 When the coil 2053 is moved up, correspondingly, the coil 2053 on the right side passes the current in the opposite direction to the first direction, so that the right side of the pressing seat 2052 can move down under the driving of the coil 2053 . In this way, the coils 2053 located on both sides of the squeeze seat 2052 can simultaneously act on the squeeze seat 2052 to deflect in a common adjustment direction, so as to effectively improve the adjustment efficiency, so that the light can be quickly adjusted during shooting to obtain better shooting. Effect.

In some embodiments, the electronic device further includes a detection module and a driving module, the detection module is used to detect the shaking information of the camera module 200 , and the driving module is used to regulate the extrusion structure 205 according to the shaking information, so that the extrusion structure 205 is suitable for the liquid. The lens 203 is squeezed and deformed, and the liquid lens 203 moves or deflects in a desired direction to achieve focusing and anti-shake. Specifically, when the extrusion structure 205 adjusts the extrusion seat 2052 in a way that the coil 2053 is energized and moved in the magnetic field, the driving module will be used to regulate the direction and magnitude of the current flowing through the corresponding coil 2053, so that the coil 2053 can be adjusted in different The force acts on the squeeze seat 2052 , and then the squeeze seat 2052 achieves different degrees of squeezing deformation on the liquid lens 203 , so as to meet the adjustment needs of the light that needs to be incident on the photosensitive area 201 a of the light sensor 201 .

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

The above-mentioned embodiments only represent several embodiments of the present application, and the descriptions thereof are relatively specific and detailed, but should not be construed as a limitation on the scope of the patent application. It should be pointed out that for those skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the scope of protection of the patent of the present application shall be subject to the appended claims.

Claims (12)

1. a camera module, is characterized in that, comprises: The light sensor has a photosensitive area, and the surface of the photosensitive area is substantially perpendicular to the imaging optical axis of the camera module; a first lens, a liquid lens and a second lens, the first lens, the liquid lens and the second lens are sequentially arranged along the imaging optical axis of the camera module toward a direction away from the light sensor; The squeezing structure is used for squeezing the liquid lens to adjust the direction of the light emitted by the liquid lens. 2 . The camera module according to claim 1 , wherein the liquid lens comprises a flat closed capsule and a liquid filled with the closed capsule, and light can pass through one side of the closed capsule. 3 . Permeable to the liquid and ejected from the other side, the closed capsule can be deformed together with the liquid when squeezed. 3. The camera module according to claim 1 or 2, wherein the liquid lens comprises a light incident surface and a light exit surface, and the light incident surface is located on a side of the liquid lens facing the second lens. The light-emitting surface is located on the side of the liquid lens facing the first lens, at least one of the light-incident surface and the light-emitting surface is a convex surface, and the liquid lens is squeezed by the extrusion structure. The radius of curvature of the convex surface can be changed. 4. The camera module according to claim 3, wherein the camera module further comprises a mirror base and a mounting plate arranged in the mirror base, the first lens and the second lens are both The liquid lens is installed in the lens holder and located on both sides of the mounting plate, and the liquid lens is connected to the mounting plate. 5 . The camera module according to claim 4 , wherein a filter is provided in the lens holder, and the filter is located between the first lens and the light sensor. 6 . 6 . The camera module according to claim 5 , wherein the camera module comprises a circuit board, the light sensor is arranged on the circuit board, and the lens holder comprises a first support and a second support. 7 . a seat, the first support and the second support are connected to each other and have a hollow shell-like structure, the first support is connected with the circuit board, and the light sensor is covered inside; The first support has a light-passing hole for light to penetrate into the light sensor, the filter is arranged at the light-passing hole, and the second support is provided with a hole opposite to the light-passing hole. the first installation hole, the first lens is installed in the first installation hole. 7 . The camera module according to claim 6 , wherein the first support and the second support are injection-molded into one body, and the diameter of the light-passing hole is smaller than the diameter of the first installation hole. 8 . diameter, the size of the optical filter is smaller than the diameter of the first mounting hole and larger than the diameter of the light-passing hole. 8 . The camera module according to claim 6 , wherein the lens holder further comprises a third support, the third support is provided with a second mounting hole, and the second lens is mounted on the Second mounting hole. 9 . The camera module according to claim 8 , wherein the second support and the third support are injection-molded into one body, and the second support is connected to the third support An installation card position is formed at the position, and the installation plate is installed in the installation card position. 10 . The camera module according to claim 4 , wherein the extrusion structure is disposed in the lens holder, the extrusion structure comprises a magnet, an extrusion base and a coil, and the magnet is fixed on the lens holder. 11 . On the inner wall of the mirror seat, the squeeze seat is connected with the mirror seat through the elastic sheet, the coil is connected with the squeeze seat, and the coil can be driven by the magnetic field of the magnet when it is energized. The squeeze seat moves relative to the lens seat, so that the squeeze seat squeezes the liquid lens. 11 . The camera module according to claim 10 , wherein the extrusion structure comprises a plurality of sets of correspondingly arranged magnets and coils, wherein the coils are arranged along the peripheral side of the extrusion seat. 12 . 12. An electronic device, comprising a detection module, a drive module and the camera module according to any one of claims 1-11, wherein the detection module is used to detect the jitter information of the camera module, The driving module is used for regulating the pressing structure according to the shaking information, so that the pressing structure presses the liquid lens.

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