阅读说明：本技术 防抖自动对焦装置及摄像设备 (Anti-shake automatic focusing device and camera equipment ) 是由 闫志国 陈实 甄峰 于 2019-09-21 设计创作，主要内容包括：本申请实施例提供一种防抖自动对焦装置及摄像设备。防抖自动对焦装置包括透镜、自动对焦部件、支撑弹性体、压片部件及防抖致动器,透镜装设于所述自动对焦部件上,压片部件包括固定相接的压片及底板,支撑弹性体的第一端固定于所述自动对焦部件,支撑弹性体的第二端固定于所述底板上,使得自动对焦部件由所述支撑弹性体支撑位于压片背离所述底板一侧；防抖致动器固定于自动对焦部件朝向压片部件的一端与压片之间,防抖致动器用于在通电变形时带动自动对焦部件及透镜,以支撑弹性体的第二端与底板的连接处作为基点进行摆动,从而简化防抖自动对焦装置的结构以及减薄防抖自动对焦装置沿透镜的光轴延伸方向的厚度,有利于摄像设备的轻薄化。(The embodiment of the application provides an anti-shake automatic focusing device and camera equipment. The anti-shake automatic focusing device comprises a lens, an automatic focusing component, a supporting elastic body, a pressing piece component and an anti-shake actuator, wherein the lens is arranged on the automatic focusing component, the pressing piece component comprises a pressing piece and a bottom plate which are fixedly connected, the first end of the supporting elastic body is fixed on the automatic focusing component, and the second end of the supporting elastic body is fixed on the bottom plate, so that the automatic focusing component is supported by the supporting elastic body and is positioned on one side, away from the bottom plate, of the pressing piece; the anti-shake actuator is fixed between one end, facing the pressing piece component, of the automatic focusing component and the pressing piece, and the anti-shake actuator is used for driving the automatic focusing component and the lens when the automatic focusing component and the pressing piece are electrified and deformed, and the joint of the second end of the supporting elastic body and the bottom plate is used as a base point to swing, so that the structure of the anti-shake automatic focusing device is simplified, the thickness of the anti-shake automatic focusing device in the extending direction of the optical axis of the lens is reduced, and the light and thin camera equipment is facilitated.)

1. An anti-shake automatic focusing device is characterized by comprising a lens, an automatic focusing component, a pressing piece component, a supporting elastic body and an anti-shake actuator, wherein the lens is arranged on the automatic focusing component; the anti-shake actuator is fixed between one end of the automatic focusing component facing the pressure sheet and the pressure sheet, and is used for driving the automatic focusing component and the lens when the automatic focusing component is electrified and deformed, and swinging by taking the joint of the second end of the supporting elastic body and the bottom plate as a base point, so that optical anti-shake is realized.

2. The anti-shake autofocus apparatus according to claim 1, wherein the optical axis of the lens extends in a first direction, and the anti-shake actuator comprises a first actuator, a second actuator, a third actuator and a fourth actuator electrically insulated from each other, wherein the first actuator and the second actuator extend in a second direction and are parallel to each other, the third actuator and the fourth actuator extend in a third direction and are parallel to each other, and the first direction, the second direction and the third direction are different.

3. The anti-shake autofocus apparatus of claim 1, wherein the anti-shake actuator is a shape memory alloy element, and the anti-shake actuator is electrically connected to the blade.

4. The anti-shake automatic focusing device according to claim 3, further comprising a clamping jaw, wherein the clamping jaw comprises an installation portion and a first claw portion, the installation portion is fixed on one surface of the automatic focusing component facing the pressing sheet, the first claw portion is formed by one end of the installation portion protruding towards one side away from the automatic focusing component, one side of the pressing sheet facing the automatic focusing component is protruded to form a second claw portion, one end of the anti-shake actuator is fixedly connected and electrically connected with the first claw portion, the other end of the anti-shake actuator is fixedly connected with the second claw portion, and the extending direction of the anti-shake actuator is perpendicular to the extending direction of the optical axis.

5. The anti-shake autofocus apparatus according to claim 1, wherein the base plate has a wiring layer, a first end of the supporting elastic body is electrically connected to the autofocus component, and a second end of the supporting elastic body is fixed to the base plate and electrically connected to the wiring layer.

6. The anti-shake autofocus apparatus according to claim 5, wherein the autofocus component includes a holder, a support, an autofocus actuator, and a base, the support is received in the holder and is movable along the extending direction of the optical axis, the lens is fixed on the support, the autofocus actuator is connected to the support, the autofocus actuator is configured to drive the support and the lens to move along the extending direction of the optical axis, and the base is fixed to an end of the holder facing the pressing plate.

7. The anti-shake automatic focusing device according to claim 5, wherein the automatic focusing component further comprises a first spring and a second spring, the first spring and the second spring are accommodated in the fixing base, the first spring, the supporting base, the second spring and the base are sequentially stacked, the first end of the supporting elastic body is electrically connected to the first spring, and the first spring and the second spring are both electrically connected to the automatic focusing actuator.

8. The anti-shake automatic focusing apparatus according to claim 7, wherein the outer sidewall of the fixing base is provided with a mounting groove and a first fixing portion, the first fixing portion is protruded from the sidewall of the mounting groove to divide the mounting groove into a first mounting hole and a second mounting hole, the first mounting hole is disposed away from the pressing plate compared to the second mounting hole, the first spring portion is exposed out of the fixing base through the first mounting hole, and the first end of the supporting elastic body is fixed and electrically connected to a portion of the first spring exposed out of the mounting hole.

9. The anti-shake autofocus apparatus according to claim 7, wherein the autofocus actuator comprises a magnet and a coil, the magnet is fixed to the support base, the coil is sleeved outside the support base, the coil is received in the fixing base, and the support base drives the lens to move along the extending direction of the optical axis by the interaction between the coil and the magnet in the energized state.

10. The anti-shake autofocus apparatus according to claim 6, wherein the fixing base comprises a plurality of corners, each corner has a first fixing portion, the base plate comprises a plurality of second fixing portions, and the supporting elastic body comprises a plurality of sets, each set of the supporting elastic body is connected between one of the first fixing portions and one of the second fixing portions.

11. The anti-shake autofocus apparatus according to claim 1, further comprising a shield cover having an opening, wherein the shield cover is disposed on the autofocus component and is fixedly connected to the base plate, and wherein an end of the lens facing away from the base plate is exposed through the opening of the shield cover.

12. An image pickup apparatus comprising the anti-shake auto-focusing device according to any one of claims 1 to 11, an image sensor, a position sensor, and a processor, the image sensor is located on a side of the base plate facing away from the auto-focus feature, the image sensor is configured to receive light captured by the lens and generate image information, the position sensor is used for acquiring the shaking information of the camera equipment, the processor is electrically connected with the anti-shaking actuator, the automatic focusing component, the image sensor and the position sensor, the processor is used for controlling power supply to the anti-shake actuator according to the shake information, so that the automatic focusing component swings at the joint of the second end of the supporting elastic body and the bottom plate, and shake displacement of the camera equipment is compensated to realize anti-shake focusing.

Technical Field

The invention relates to the technical field of camera shooting, in particular to an anti-shake automatic focusing device and camera shooting equipment.

Background

When an image capturing apparatus with an image capturing function, such as a mobile phone or a tablet computer, captures an image, a situation that a captured picture is blurred, ghosted or blurred due to slight shake often occurs. With the continuous maturity and expansion of the market of the image pickup apparatus, the demand for high performance of the image pickup apparatus is continuously increased, which also puts higher demands on an Auto Focus (AF) function and an Optical Image Stabilization (OIS) function of the image pickup apparatus. The existing optical anti-shake structure is complex, for example, a focusing component is moved by a moving platform, so that the focusing component drives a lens to move along a direction vertical to an optical axis of the lens to compensate shake displacement. However, these structures increase the overall size, which is disadvantageous for the slimness of the image pickup apparatus.

Disclosure of Invention

The technical problem to be solved by the embodiments of the present application is to provide an anti-shake auto-focusing device and an image capturing apparatus, which are beneficial to thinning.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

in a first aspect, an embodiment of the present application provides an anti-shake auto-focusing device, including a lens, an auto-focusing component, a supporting elastic body, a pressing piece component, and an anti-shake actuator, where the lens is mounted on the auto-focusing component, the pressing piece component includes a pressing piece and a bottom plate that are fixedly connected, the pressing piece is located between the auto-focusing component and the bottom plate, a first end of the supporting elastic body is fixed to the auto-focusing component, and a second end of the supporting elastic body is fixed to the bottom plate, so that the auto-focusing component is supported by the supporting elastic body and located on a side of the pressing piece away from the bottom plate; the anti-shake actuator is fixed between one end of the automatic focusing component facing the pressure sheet and the pressure sheet, and is used for driving the automatic focusing component and the lens when the automatic focusing component is electrified and deformed, and swinging by taking the joint of the second end of the supporting elastic body and the bottom plate as a base point, so that optical anti-shake is realized.

In the anti-shake automatic focusing apparatus according to this embodiment, the support elastic body is directly and fixedly connected to the automatic focusing element and the bottom plate, and is configured to support the automatic focusing element to suspend on the pressing sheet element along the extending direction of the optical axis of the lens, the anti-shake actuator is fixed between the pressing sheet and one end of the automatic focusing element facing the pressing sheet element, and the anti-shake actuator drives the automatic focusing element and the lens to swing with a joint of the second end of the support elastic body and the bottom plate as a base point when the anti-shake actuator is electrically deformed, in other words, the anti-shake actuator drives the automatic focusing element and the lens to displace relative to the pressing sheet along the extending direction of the optical axis and a direction different from the extending direction of the optical axis of the lens when the anti-shake actuator is electrically deformed. Because need not to set up the structure in addition, set up parts such as moving platform in the preforming part and drive the auto focus part and carry out anti-shake compensation motion along the extending direction that is different from the optical axis for example, simplified anti-shake auto focus device's structure and attenuate anti-shake auto focus device's thickness, be favorable to camera equipment's frivolousization.

In one embodiment, the extending direction of the optical axis of the lens is a first direction, the anti-shake actuator includes a first actuator, a second actuator, a third actuator and a fourth actuator electrically insulated from each other, wherein the first actuator and the second actuator extend in a second direction and are parallel to each other, the third actuator and the fourth actuator extend in a third direction and are parallel to each other, and the first direction, the second direction and the third direction are different from each other.

In one embodiment, the anti-shake actuator is a shape memory alloy element, and the anti-shake actuator is electrically connected to the pressing sheet, which is beneficial to simplifying the wiring structure of the anti-shake automatic focusing device and reducing the weight of the automatic focusing device.

In an embodiment, the anti-shake automatic focusing device further includes a clamping jaw, the clamping jaw includes an installation portion and a first claw portion, the installation portion is fixed to a surface of the automatic focusing component facing the pressing sheet, the first claw portion is formed by bending one end portion of the installation portion towards a side away from the automatic focusing component, a second claw portion is formed by protruding one side of the pressing sheet facing the automatic focusing component, one end of the anti-shake actuator is fixedly connected and electrically connected with the first claw portion, the other end of the anti-shake actuator is fixedly connected with the second claw portion, and an extending direction of the anti-shake actuator is perpendicular to an extending direction of the optical axis.

The first claw part is formed by bending one end part of the installation part towards one side departing from the automatic focusing component, and the pressing sheet is convexly arranged towards one side of the automatic focusing component to form the second claw part, so that the extending direction of the anti-shake actuator is perpendicular to the extending direction of the optical axis, the movement of the anti-shake actuator relative to the pressing sheet component is conveniently controlled, and the optical anti-shake precision of the anti-shake automatic focusing device is improved.

In one embodiment, the bottom plate has a routing layer, a first end of the supporting elastic body is electrically connected to the auto-focusing element, and a second end of the supporting elastic body is fixed to the bottom plate and electrically connected to the routing layer. The automatic focusing component is directly powered through the bottom plate and the supporting elastic body, and the wiring structure of the anti-shake automatic focusing device is simplified.

In one embodiment, the auto-focusing unit includes a fixing base, a supporting base, an auto-focusing actuator and a base, the supporting base is accommodated in the fixing base and can move along the extending direction of the optical axis, the lens is fixed on the supporting base, the auto-focusing actuator is connected to the supporting base, the auto-focusing actuator is used for driving the supporting base and the lens to move along the extending direction of the optical axis, and the base is fixed at one end of the fixing base facing the pressing sheet.

In this embodiment, the supporting seat can be movably accommodated in the fixing seat, the lens is supported by the supporting seat, the base is fixed at one end of the fixing seat facing the pressing sheet, and the base is used for preventing the supporting seat from being separated from the fixing seat, so that the assembly of the anti-shake automatic focusing device is facilitated.

In an embodiment, the auto-focusing component further includes a first spring and a second spring, the first spring and the second spring are accommodated in the fixing seat, the first spring, the supporting seat, the second spring and the base are sequentially stacked, the base is disposed toward the pressing plate of the pressing plate component, the first end of the supporting elastic body is electrically connected to the first spring, and both the first spring and the second spring are electrically connected to the auto-focusing actuator.

In this embodiment, the first spring plate and the second spring plate support the auto-focusing actuator and provide an electrical connection function, which is beneficial to simplifying the structure of the anti-shake auto-focusing device.

In one embodiment, the outer side wall of the fixing seat is provided with a mounting groove and a first fixing portion, the first fixing portion is convexly disposed on the side wall of the mounting groove so as to divide the mounting groove into a first mounting hole and a second mounting hole, the first mounting hole is disposed away from the pressing sheet compared with the second mounting hole, the first spring piece portion exposes the fixing seat through the first mounting hole, and the first end of the supporting elastic body is fixed and electrically connected to the portion of the first spring piece exposing the mounting hole.

In this embodiment, the lateral wall of fixing base is equipped with mounting groove and first fixed part, first reed part passes through first mounting hole exposes the fixing base, and is convenient the first end of support elastomer with the electric connection of first reed further simplifies anti-shake automatic focusing device's circuit, also further improves anti-shake automatic focusing device's equipment convenience.

In one embodiment, the auto-focusing actuator includes a magnet and a coil, the magnet is fixed on the support seat, the coil is sleeved outside the support seat, the coil is accommodated in the fixing seat, and the coil interacts with the magnet in a power-on state to drive the lens to move along the extending direction of the optical axis. The voice coil motor structure is adopted as the automatic focusing actuator, so that the cost of the anti-shake automatic focusing device is reduced.

In an embodiment, the automatic focusing actuator is a shape memory alloy member, and the automatic focusing actuator is configured to deform when powered on, so as to drive the supporting seat to move along the extending direction of the optical axis relative to the fixing seat, which is beneficial to simplifying the structure of the automatic focusing component.

In an embodiment, the number of the anti-shake actuators is multiple, the pressing sheet includes multiple sub-pressing sheets insulated from each other, each anti-shake actuator is connected between one sub-pressing sheet and the auto-focusing component, the anti-shake actuator is electrically connected to the corresponding sub-pressing sheet, and the anti-shake actuator extends along the edge of the base plate, which is beneficial to improving the stability of the motion of the auto-focusing component relative to the pressing sheet component, and facilitates the connection between the anti-shake actuator and the pressing sheet component, thereby further improving the assembly convenience of the anti-shake auto-focusing device.

In one embodiment, the anti-shake automatic focusing device further includes a shielding cover having an opening, the shielding cover is disposed on the automatic focusing component and is fixedly connected to the bottom plate, one end of the lens, which is away from the pressing sheet component, is exposed from the opening of the shielding cover, and the shielding cover is used for electromagnetic shielding, protecting the automatic focusing component and limiting the movement of the automatic focusing component relative to the pressing sheet component.

In one embodiment, the fixing base includes a plurality of corners, each corner is provided with a first fixing portion, the bottom plate includes a plurality of second fixing portions, the supporting elastic body includes a plurality of sets, and each set of the supporting elastic body is connected between one first fixing portion and one second fixing portion.

Because the automatic focusing component is connected with the pressing piece component through the plurality of groups of supporting elastic bodies, the automatic focusing component can not incline when moving relative to the pressing piece component to perform optical anti-shake, and the shooting quality is favorably improved. In addition, the length and width of the anti-shake automatic focusing device are not increased by using the free space of the corner of the fixed seat.

In one embodiment, the shortest gap between the automatic focusing component and the pressing sheet is in the range of 0.05-0.1mm, so that the risk of short circuit caused by the contact of the automatic focusing component and the pressing sheet component is avoided.

In one embodiment, the supporting elastic body includes a main body, a first contact member and a second contact member, the first contact member is fixedly connected to one end of the main body, the first contact member is inserted into the first fixing portion and electrically connected to the first spring, the second contact member is fixedly and electrically connected to the base plate, and when the anti-shake actuator is deformed by power-on, the auto-focusing member and the lens swing with the second contact member as a base point.

In a second aspect, an embodiment of the present application further provides an image capturing apparatus, including the anti-shake auto-focusing device, the image sensor, the position sensor, and the processor, the image sensor is positioned on a side of the sheeting member facing away from the auto-focusing member, the image sensor is configured to receive light captured by the lens and generate image information, the position sensor is used for acquiring shaking information of the camera equipment, the processor is used for being electrically connected with the anti-shaking actuator, the automatic focusing component, the image sensor and the position sensor, and the processor controls the power supply of the anti-shake actuator according to the shake information, so that the automatic focusing component is controlled to swing at the joint of the second end of the supporting elastic body and the bottom plate, and shake displacement of the camera equipment is compensated to realize anti-shake focusing.

The camera device provided by the embodiment adopts the structure of the supporting elastic body and the anti-shake actuator, simplifies the structure of the anti-shake automatic focusing device, and is beneficial to reducing the thickness of the camera device in the extending direction of the optical axis of the lens.

The processor powers the anti-shake actuator according to the shake information, including controlling an input current into the anti-shake actuator, or by pulse width modulation voltage control of the anti-shake actuator.

In one embodiment, the camera device is one of a smart phone, a smart watch, a tablet computer, a personal digital assistant, a sales terminal, an in-vehicle computer, a desktop computer, a notebook computer, a smart television, and a game console.

Drawings

Fig. 1 is a block diagram of an image pickup apparatus according to an embodiment of the present disclosure;

fig. 2 is a schematic view of an application scenario of the image capturing apparatus;

FIG. 3 is a partially exploded perspective view of the anti-shake autofocus device;

FIG. 4 is a cross-sectional view of the anti-shake auto-focusing apparatus;

FIG. 5 is a schematic diagram of the anti-shake auto-focusing apparatus shown in FIG. 3;

FIG. 6 is a schematic perspective view of an anti-shake automatic focusing apparatus;

FIG. 7 is an enlarged view of a portion of the structure of the anti-shake automatic focusing apparatus;

FIG. 8 is a schematic perspective view of a pressing member of the anti-shake automatic focusing apparatus;

FIG. 9 is a partially enlarged view of another part of the anti-shake automatic focusing device;

FIG. 10 is a schematic view of the supporting elastic body of the anti-shake automatic focusing device after the anti-shake actuator is deformed by power-on;

FIG. 11 is a schematic bottom view of the anti-shake automatic focusing apparatus with a portion removed;

FIG. 12 is a first schematic view of the anti-shake actuator actuation relationship;

FIG. 13 is a second schematic view of the anti-shake actuator actuation relationship;

FIG. 14 is a third schematic view of the anti-shake actuator actuation relationship;

fig. 15 is a fourth schematic diagram of an anti-shake actuator actuation relationship.

Detailed Description

Referring to fig. 1, fig. 1 is a block diagram of an image capturing apparatus according to an embodiment of the present disclosure. An image pickup apparatus 200 includes an anti-shake autofocus device 100, an image sensor 201, a position sensor 203, and a processor 205. The image capturing apparatus 200 may be one of a smart phone, a smart watch, a tablet computer, a Personal Digital Assistant (PDA), a point of sale (POS), a vehicle-mounted computer, a desktop computer, a notebook computer, a smart television, and a game machine. The image sensor 201 is used to generate image information from light captured by the anti-shake autofocus device 100. The position sensor 205 is used to acquire shake information of the image pickup apparatus 200. The processor 205 is configured to control the anti-shake automatic focusing device 100 to perform automatic optical anti-shake focusing according to the shake information.

The image pickup apparatus 200 further includes a communication bus 206, at least one communication interface 207, and a memory 208. It is understood that fig. 1 is only an example of the image capturing apparatus 200, and does not constitute a limitation to the image capturing apparatus 200, and the image capturing apparatus 200 may include more or less components than those shown in fig. 1, or some components may be combined, or different components, for example, the image capturing apparatus 200 may further include an input and output device, a network access device, and the like.

The processor 205 is communicatively coupled to the at least one communication interface 207, the memory 208, and the position sensor 203 via a communication bus 206. The Processor 205 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like, and the processor 205 is a control center of the image pickup apparatus 200, and various interfaces and lines are used to connect the respective parts of the entire image pickup apparatus 200. The communication bus 206 may include a path to transfer information between the aforementioned components.

The communication interface 207 may be any device, such as a transceiver, for communicating with other devices or communication networks, such as an ethernet, a Radio Access Network (RAN), a Wireless Local Area Network (WLAN), etc.

The memory 208 may be used to store computer programs and/or modules, and the processor 205 implements various functions of the image capture device 200 by running or executing the computer programs and/or modules stored in the memory 208, as well as invoking data stored in the memory 208. The memory 208 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, application programs required for a plurality of functions (such as a sound playing function, an image playing function, and the like), and the like; the data storage area may store data (such as audio data, a phonebook, and the like) created according to the use of the image pickup apparatus 200, and the like. In addition, the memory 208 may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), a plurality of magnetic disk storage devices, a Flash memory device, or other volatile solid state storage devices. The memory 208, which may be separate, is coupled to the processor 205 via the communication bus 206. The memory 208 may also be integrated with the processor 205.

In particular implementations, processor 205 may include one or more CPUs such as CPU0 and CPU1 of fig. 1 for one embodiment.

In a particular implementation, as one example, the image capture device 200 may include multiple processors, such as the CPU0 and the CPU1 of fig. 1. Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).

Referring to fig. 2, taking the image capturing apparatus 200 as a mobile phone as an example for an exemplary description, in a case that the image capturing apparatus 200 shown in this embodiment has a corresponding camera application installed, the interface of the image capturing apparatus 200 displays the first icon 80 of the camera application. The camera application includes application software capable of applying a camera, such as WeChat, QQ, and the like. The processor 205 of the image pickup apparatus 200 controls the image pickup apparatus 200 to enter a photographing interface upon detecting that the first icon 80 of the camera application receives a click event input by a user. The position sensor 205 acquires shake information of the image pickup apparatus 200, and the processor 205 controls the anti-shake autofocus device 100 to perform automatic optical anti-shake focusing according to the shake information.

Referring again to fig. 2, the image capturing apparatus 200 may be provided with a plurality of physical keys 90. In one embodiment, one of the physical keys 90 is an activation key of the anti-shake auto focus device 100. When the processor 205 detects a trigger event of the user to the start key, it controls to start or stop the anti-shake automatic focusing apparatus 100. In one embodiment, when the processor 205 of the image capturing apparatus 200 detects a trigger event of the user to one of the physical keys 90, the processor 205 controls the image capturing apparatus 200 to enter a shooting interface, i.e., activates the anti-shake autofocus device 100. The position sensor 205 acquires shake information of the image pickup apparatus 200, and the processor 205 controls the anti-shake autofocus device 100 to perform automatic optical anti-shake focusing according to the shake information.

It should be noted that the application to a mobile phone in the present application is only one application example, and the anti-shake autofocus apparatus 100 may obviously be applied to other structures (e.g., gastroscope probe), and is not limited to the image capturing apparatus 200.

Referring to fig. 3-4, fig. 3 is a partially exploded perspective view of an anti-shake automatic focusing apparatus according to an embodiment of the present disclosure, and fig. 4 is a cross-sectional view of the anti-shake automatic focusing apparatus.

The anti-shake autofocus device 100 includes a lens 10, an anti-shake autofocus structure 30, an anti-shake actuator 50, a blade member 60, and a shield 70. The anti-shake autofocus structure 30 includes an autofocus member 31 and a support elastic member 33. The lens 10 is mounted on the auto-focusing part 31 to capture light. The auto-focusing part 31 is used to drive the lens 10 to move along the extending direction of the optical axis of the lens 10, so as to automatically focus. The first end of the supporting elastic body 33 is fixed to the automatic focusing member 31, and the second end of the supporting elastic body 33 is fixed to the pressing member 60, so that the automatic focusing member 31 is supported by the supporting elastic body 33 and positioned on the pressing member 60. The anti-shake actuator 50 is fixed between the pressing member 60 and one end of the autofocus member 31 facing the pressing member 60, and the anti-shake actuator 50 is located between the autofocus structure 30 and the pressing member 60. The anti-shake actuator 50 is configured to drive the auto-focusing element 31 and the lens 10 during the electrical deformation, and to swing with a joint between the second end of the supporting elastic body 33 and the pressure sheet member 60 as a base point, thereby achieving optical anti-shake.

The anti-shake actuator 50 drives the auto-focusing element 31 and the lens 10 to swing with a joint of the second end of the supporting elastic body 33 and the pressing plate element 60 as a base point during the electrical deformation, so that the anti-shake actuator 50 drives the auto-focusing element 31 and the lens 10 to displace relative to the pressing plate element 60 along the optical axis extending direction of the lens 10 and a direction different from the optical axis extending direction of the lens 10 during the electrical deformation. Because no additional structure is needed, for example, a moving platform is disposed in the tablet pressing part 60 to drive the auto-focusing part 31 to perform the anti-shake compensation motion along the extending direction different from the optical axis, the structure of the anti-shake auto-focusing device 100 is simplified and the thickness of the anti-shake auto-focusing device 100 is reduced, which is beneficial to the light and thin of the image capturing apparatus 200.

In the present embodiment, the direction in which the optical axis of the lens 10 extends is the first direction (for example, the Z direction). The anti-shake actuator 50 drives the auto-focusing element 31 and the lens 10 to swing with the joint of the second end of the supporting elastic body 33 and the pressing member 60 as a base point when deformed by the power-on, in other words, the anti-shake actuator 50 can drive the auto-focusing element 31 and the lens 10 to displace relative to the pressing member 61 along the first direction and the direction different from the first direction when deformed by the power-on. The direction different from the first direction is a second direction (for example, an X direction) or a third direction (for example, a Y direction), and the first direction, the second direction and the third direction are perpendicular to each other. It is to be understood that the first direction, the second direction, and the third direction are not limited to being perpendicular to each other.

The anti-shake actuator 50 is a Shape Memory Alloy (SMA) member. Shape Memory alloys are materials composed of two or more metal elements that have a Shape Memory Effect (SME) through thermoelastic and martensitic transformation and inversion thereof. In the embodiment, the shape memory alloy is a nickel-titanium alloy material and has the characteristics of thermal shrinkage and cold expansion. When current flows into the anti-shake actuator 50, the anti-shake actuator 50 is heated and contracted, so as to drive the auto-focusing element 31 to move relative to the pressing element 60, thereby changing the position of the lens 10 and realizing optical anti-shake. When the current is cut off, the anti-shake actuator 50 cools to return to its original shape. The displacement of autofocus part 31 relative to the movement of blade part 60 can be controlled by processor 205 controlling the amount of current input to anti-shake actuator 50. It is understood that the anti-shake actuator 50 is not limited to nitinol, but may be other shape memory alloys such as copper-nickel alloys, copper-aluminum alloys, copper-zinc alloys, iron alloys (Fe-Mn-Si, Fe-Pd); the anti-shake actuator 50 can be electrified to contract, and the anti-shake actuator 50 can be electrified to extend, so that the automatic focusing component 31 can be driven to move relative to the tablet pressing component 60 when the anti-shake actuator is electrified; the anti-shake actuator 50 may be made of other shape memory materials, and the anti-shake actuator 50 may be deformed by being energized. In one embodiment, the processor 205 may control the Pulse Width Modulation (PWM) duty cycle voltage of the anti-shake actuator 50, and also control the displacement of the auto-focusing part 31 relative to the tablet part 60.

The shielding cover 70 is covered on the automatic focusing structure 30 and is fixedly connected with the pressing member 60, and is used for shielding electromagnetism, protecting the automatic focusing member 31 and limiting the movement of the automatic focusing member 31. The shield case 70 has an opening 71, and an end of the lens 10 facing away from the wafer member 60 is exposed through the opening 71 of the shield case 70.

Referring to fig. 5 and 6, fig. 5 is a further exploded perspective view of the anti-shake automatic focusing apparatus shown in fig. 3, and fig. 5 is a partially assembled perspective view of the anti-shake automatic focusing apparatus.

Specifically, the autofocus member 31 includes a fixing base 311, a first spring 312, a supporting base 313, an autofocus actuator 314, a second spring 317, and a base 318.

The fixing base 311 is substantially square. The fixing base 311 includes four corners 3110. The fixing base 311 is provided with a mounting groove 3113 and a first fixing portion 3115 on an outer side wall of each corner 3110. First fixing portion 3115 is protruded on a sidewall of mounting groove 3113 to divide mounting groove 3113 into first mounting hole 3117 and second mounting hole 3118. Compared with the second mounting hole 3118, the first mounting hole 3117 is located at an end of the fixing seat 311 away from the tablet component 60. The first spring 312 is accommodated in the holder 311. The first spring 312 partially protrudes from the fixed seat 311 through the first mounting hole 3117. The support base 313 is accommodated in the fixed base 311 and is stacked on the first spring piece 312. The lens 10 is inserted into the supporting base 313 and is fixedly connected with the supporting base 313. In the present embodiment, the autofocus actuator 314 has a voice coil motor structure, and includes a magnet 3141 and a coil 3143. The outer side wall of the supporting seat 313 is concavely provided with an installation groove 3133. The magnet 3141 is fixed to the mounting groove 3133. The coil 3143 is sleeved outside the supporting base 313, and the coil 3143 is accommodated in the fixing base 311. The coil 3143 is electrically connected to the first spring 312 via an electrical connector (not shown). The second spring piece 317 is stacked on the support base 313 and is accommodated in the fixing base 311. Second spring leaf 317 is located on a side of support base 313 away from first spring leaf 312. In other words, the support seat 313 is sandwiched between the first spring piece 312 and the second spring piece 317. The position sensor 203 is fixed to the support base 313. The second spring piece 317 partially protrudes from the second mounting hole 3118. The second spring piece 317 is electrically connected to the coil 3143 through an electrical connection (not shown). The supporting base 313 drives the lens 10 to move along the first direction through the interaction of the coil 3143 and the magnet 3141 in the energized state. The base 318 is stacked with the second spring piece 317 and is located on the side of the second spring piece 317 opposite to the supporting seat 313. The base 318 is fixedly accommodated in the fixing seat 311, and prevents the support seat 313, the magnet 3141, and the second spring piece 317 from being detached from the fixing seat 311.

The supporting elastic body 33 includes a main body 331, a first contact 333, and a second contact 335. In this embodiment, the body 331 is a suspension wire, the body 331 has a substantially cylindrical shape, and the material of the body 331 includes a silver alloy. The body 331 has a certain rigidity so as to support the auto-focusing part 31 suspended on the pressing part 60. The first contact 333 is fixedly connected to one end of the body 331. The first contact 333 is disposed through the first fixing portion 3115 and electrically connected to the first spring 312. First reed 312 serves as a circuit connection while providing a supporting balance function for autofocus part 31. The second contact 335 is fixed and electrically connected to the wafer member 60. The shortest clearance between the automatic focusing part 31 and the pressing part 60 is 0.05-0.1mm, so that the risk of short circuit caused by the contact of the automatic focusing part 31 and the pressing part 60 is avoided.

It is understood that the material of the supporting elastic body 33 is not limited, for example, the supporting elastic body 33 may be made of conductive rubber material, the supporting elastic body 33 may also be made of insulating rubber material, and the coil 3143 is electrically connected with the external power supply device through other forms of electrical connection members; the first contact 333 and the second contact 335 may be omitted, and the first end of the main body 331 may be directly fixed to the autofocus member 31 and the first end of the main body 331 may be fixed to the pressing member 60; the shape of the body 331 is not limited, and the body 331 may have other shapes, such as a spiral shape, a bowling ball shape, and the like.

The anti-shake autofocus structure 30 further includes a clamping jaw 35, and the clamping jaw 35 is disposed on a side of the base 318 facing away from the second spring piece 317. Referring to fig. 7, fig. 7 is an enlarged schematic view of a partial region of a structure of an anti-shake auto-focusing apparatus. The claw 35 includes an installation portion 351 and a first claw portion 353. The mounting portion 351 is fixed to a surface of the base 318 facing the sheet member 60 by means of adhesive or welding. The first claw portion 353 is formed by one end of the mounting portion 351 projecting in a direction away from the autofocus member 31. The anti-shake actuator 50 has one end fixed to the first claw portion 353 of the claw 35 and the other end fixed to the pressure sheet member 60.

Referring to fig. 8, fig. 8 is a schematic perspective assembly view of a pressing sheet component of the anti-shake automatic focusing device. The pressing member 60 includes a pressing plate 61 and a base plate 63 fixedly connected and insulated from each other. The pressing piece 61 is located between the base 318 and the bottom plate 63 of the auto-focusing part 31. A second claw portion 6113 is formed on one side of the pressing sheet 61 facing the automatic focusing component 31 in a protruding mode, and the second claw portion 6113 is fixed to and electrically connected with the other end, far away from the first claw portion 353, of the anti-shake actuator 50 and used for supplying power to the anti-shake actuator 50. Since power is supplied to the anti-shake actuator 50 through the pressing sheet 61, it is advantageous to simplify the wiring structure of the anti-shake automatic focusing apparatus 100. In the present embodiment, the extending direction of the anti-shake actuator 50 is perpendicular to the extending direction (i.e., the first direction) of the optical axis of the lens 10. Since the extending direction of the anti-shake actuator 50 is perpendicular to the extending direction of the optical axis, the movement of the anti-shake actuator 50 relative to the blade member 60 can be controlled conveniently, which is beneficial to improving the precision of optical anti-shake of the anti-shake automatic focusing device 100. It is understood that the extending direction of the anti-shake actuator 50 is not limited to be perpendicular to the extending direction (i.e., the first direction) of the optical axis of the lens 10.

An insulating layer (not shown) is disposed on a surface of the pressing sheet 61 close to the base 63, and the surface of the pressing sheet 61 close to the base 63 is insulated to prevent short circuit between the pressing sheet 61 and the base 63. The bottom plate 63 includes four second fixing portions 630. Each of the second fixing portions 630 is located at one corner of the bottom plate 63. The side of the base plate 63 facing the wafer 61 is provided with a routing layer 631. The circuit wiring layer 631 is used to provide an inlet and an outlet for current to the auto-focusing part 31, enabling electrical connection with structures/components external to the anti-shake auto-focusing apparatus 100. The number of the supporting elastic bodies 33 is four, and the first contact member 333 of each supporting elastic body 33 is fixed between one first fixing portion 3315 and one corresponding second fixing portion 630. The four supporting elastic bodies 33 have the same length to ensure that the automatic focusing part 31 does not tilt when moving relative to the pressing part 60 by using the parallelogram principle, thereby affecting the anti-shake accuracy. The second contact 335 is fixedly connected to the second fixing portion 630 and electrically contacts the wiring layer 631, so that the bottom plate 63 supplies power to the supporting elastic body 33. Since power is supplied to the supporting elastic body 33 through the bottom plate 63, it is advantageous to simplify the wiring structure of the automatic focusing apparatus 100.

In one embodiment, the first fixing portion 3115 is not limited to be disposed on the corner 3110, the first fixing portion 3115 may be disposed on other positions of the fixing base 311, the fixing base 311 is not limited to have four first fixing portions 3115, the second fixing portion 630 of the bottom plate 63 is not limited to be disposed on the corner of the bottom plate 63, and the second fixing portion 630 is disposed corresponding to the first fixing portion 3115. The auto-focusing member 31 includes a plurality of first fixing portions 3115, the pressing member 60 includes a plurality of second fixing portions 630, the supporting elastic body 33 includes a plurality of sets, and each set of the supporting elastic body 33 is connected between one corner 3110 and the second fixing portion 630. In each group of supporting elastic bodies 33, the number of the supporting elastic bodies 33 can be one, two or more, and when the number of the supporting elastic bodies 33 is greater than 1, the stability of the supporting elastic bodies 33 supporting the automatic focusing component 31 can be effectively improved, which is beneficial to improving the photographing quality.

Referring to fig. 9, fig. 9 is a partially enlarged schematic view of another partial structure of the anti-shake auto-focusing apparatus. Since the anti-shake actuator 50 has one end fixed to the first claw 35 of the auto-focusing member 31 (as shown in fig. 7) and the other end fixed to the inside of the second claw 6113 of the pressing piece 61, and the pressing piece 61 is fixed to the bottom plate 613, the position of the second claw 6113 is not moved by the tensile force of the anti-shake actuator 50. In contrast, the first claw 35 is fixed to the end of the autofocus part 31 facing the sheet pressing part 60. The first contact 333 of the supporting elastic body 33 is fixed to the first fixing portion 3115 of the fixing base 311, and the second contact 355 is fixed to and electrically connected to the bottom plate 63, so that the auto-focusing element 31 and the lens 10 are suspended on the side of the bottom plate 63 adjacent to the pressing sheet 61.

When the anti-shake actuator 50 is energized and heated to contract, the first clamping jaw 35 drives the auto-focusing member 31 to move in the second direction or the third direction due to the tensile force. Since one end of the second contact 335 of the supporting elastic body 33 is fixed, that is, the supporting elastic body 33 and the autofocus component 31 are actually moved by swinging the second contact 355 as a base point, the first pawl 35 and the autofocus component 31 are displaced (i.e., lowered) toward the pressing piece 61 in the first direction, and are also displaced relative to the pressing piece 61 in a direction perpendicular to the first direction. The clearance between the auto-focusing part 31 and the pressing part 60 can be obtained by calculating the triangle pythagorean theorem and adding the safety margin.

As shown in fig. 10, a indicates the position of the second contact member 335, B indicates the initial position of the first contact member 331 (i.e. before the anti-shake actuator 50 is deformed), and C indicates the position of the first contact member 331 after the anti-shake actuator 50 is deformed by power supply.

Where AC is AB + BE + EA, AC is the length of the supporting elastic body 33, CE is the displacement of the auto-focusing member 31 relative to the pressing member 60 in the second direction (i.e., the optical anti-shake displacement), and BE is the height at which the auto-focusing member 31 is lowered in the first direction. In the present embodiment, when AC is 2.7mm, the mechanical stroke of CE is 0.4mm, and the limit position AE of the auto-focusing element 31 is 2.71mm, BE is 0.03mm as calculated according to the triangular pythagorean theorem. The shortest gap between the autofocus part 31 and the pressing part 60 ranges from 0.05 to 0.1mm so as not to affect the movement of the autofocus part 31.

Referring to fig. 11, fig. 11 is a schematic bottom view of the anti-shake automatic focusing apparatus with a portion removed. Base 318 includes a first edge 3183, a second edge 3184, a third edge 3185, and a fourth edge 3187. The first edge 3183, the third edge 3185, the second edge 3184, and the fourth edge 3187 are connected in sequence. The first edge 3183 and the second edge 3185 are disposed opposite to each other and extend substantially along the second direction, and the third edge 3185 and the fourth edge 3187 are disposed opposite to each other and extend substantially along the third direction. The second direction is substantially perpendicular to the third direction.

The number of the clamping jaws 35 is two. Each jaw 35 comprises two first jaw portions 353. Two jaws 35 are positioned generally on a diagonal of base 318, with one jaw 35 positioned generally adjacent to the junction of first edge 3183 and third edge 3185 and the other jaw 35 positioned generally adjacent to the junction of second edge 3184 and fourth edge 3187.

The pressing piece 61 includes four sub-pressing pieces 611, and each sub-pressing piece 611 is provided with a second claw portion 6113. The second claw 6113 of one sub pressing piece 611 is arranged adjacent to the joint of the first edge 3183 and the fourth edge 3187. The second claw portion 6113 of the other sub pressing piece 611 is disposed adjacent to the junction of the second edge 3184 and the third edge 3185. The second claw portions 6113 of the two sub pressing pieces 611 are located approximately on the other diagonal line of the base 318.

In the present embodiment, the number of the anti-shake actuators 50 is four, and each anti-shake actuator 50 is connected between the second claw portion 6113 of one sub pressing piece 611 and the first claw portion 353 of one clamping jaw 35. The anti-shake actuator 50 includes a first actuator 51, a second actuator 52, a third actuator 53, and a fourth actuator 54. Wherein the first actuator 51 extends along the first edge 3183, and the second actuator 51 extends along the second edge 3184, that is, the first actuator 51 and the second actuator 52 extend along the second direction and are parallel to each other; the third actuator 53 is disposed to extend along the third edge 3185, the fourth actuator 54 is disposed to extend along the fourth edge 3187, and the third actuator 53 and the fourth actuator 54 are disposed in the third direction and are parallel to each other. The current value when the first actuator 51 is energized is I1, the current value when the second actuator 52 is energized is I2, the current value when the third actuator 53 is energized is I3, and the current value when the fourth actuator 54 is energized is I4.

Referring to fig. 12, when the processor 205 needs to control the auto-focusing element 31 to move forward relative to the tablet pressing element 60 along the first direction to compensate for the shake displacement according to the shake information acquired by the position sensor 203, the processor 205 controls the second actuator 52, the third actuator 53 and the fourth actuator 54 to be powered on, and I3 is I4 is I2 is 1/2. The second actuator 52, the third actuator 53 and the fourth actuator 54 are energized and contracted, so as to bring the autofocus part 31 to move forward relative to the pressing part 60 along the first direction.

Referring to fig. 13, when the processor 205 needs to control the auto-focusing element 30 to move in the negative direction relative to the tablet pressing element 60 along the first direction to compensate for the wobbling displacement according to the wobbling information acquired by the position sensor 203, the processor 205 controls the first actuator 51, the third actuator 53 and the fourth actuator 54 to be powered on, and I1 is I4 is I3 is 1/2. The first actuator 51, the third actuator 53 and the fourth actuator 54 are electrically powered and contracted, so that the automatic focusing component 31 is driven to move in the negative direction of the first direction relative to the pressing component 60.

Referring to fig. 14, when the processor 205 needs to control the auto-focusing element 31 to move forward relative to the tablet pressing element 60 along the second direction for shake displacement compensation according to the shake information acquired by the position sensor 203, the processor 205 controls the first actuator 51, the second actuator 52 and the fourth actuator 54 to be powered on, and I2 is I4 is I1 is 1/2. The first actuator 51, the second actuator 52 and the fourth actuator 54 are electrically powered and contracted, so as to drive the auto-focusing member 31 to move in the forward direction along the second direction relative to the pressing member 60.

Referring to fig. 15, when the processor 205 needs to control the auto-focusing element 30 to perform the shake compensation in the negative direction relative to the tablet pressing element 60 according to the shake information obtained by the position sensor 203, the processor 205 controls the first actuator 51, the second actuator 52 and the third actuator 53 to be powered on, and I2 is I3 is I1 is 1/2. The first actuator 51, the second actuator 52 and the third actuator 53 are energized to bring the auto-focusing member 31 to move in the negative direction of the second direction relative to the pressing member 60.

In one embodiment, the processor 205 performs PWM duty voltage control on the first actuator 51, the second actuator 52 and the third actuator 53 according to the shaking information acquired by the position sensor 203 to control the auto-focusing part 31 to swing at the connection between the second end of the supporting elastic body 33 and the bottom plate 63, so as to compensate the shaking displacement of the image pickup apparatus 200 to realize the anti-shake focusing.

It is understood that the number of the anti-shake actuators 50 is not limited to 4, and may be 1, 2, 3 or more, and the anti-shake actuators 50 are not limited to be disposed along the edge of the base 318, and the auto-focusing part 31 is controlled to move relative to the tablet part 60 along a direction different from the optical axis of the lens 10 by controlling the current in each anti-shake actuator 50.

It will be appreciated that the clamping jaw 35 may be omitted and the first end of the support resilient body 33 may be secured directly to the base 318.

It is understood that the automatic focusing actuator 314 may also be a shape memory alloy member, and the automatic focusing actuator 314 is configured to deform when powered on, so as to drive the supporting seat 313 to move along the extending direction of the optical axis relative to the fixing seat; the first spring 312, the second spring 317, and the base 318 may be omitted, the support 313 may be movably received in the fixing seat 311, the lens 10 is fixed to the support 313, and the auto-focus actuator 314 drives the support 313 and the lens 10 to move along the first direction.

It can be understood that an anti-shake automatic focusing device 100 comprises a lens 10, an automatic focusing component 31, a supporting elastic body 33, a pressing component 60 and an anti-shake actuator 50, wherein the lens 10 is mounted on the automatic focusing component 31, a first end of the supporting elastic body 33 is fixed on the automatic focusing component 31, and a second end of the supporting elastic body 33 is fixed on the pressing component 60, so that the automatic focusing component 31 is supported on the pressing component 60 by the supporting elastic body 33; the anti-shake actuator 50 is fixed between one end of the auto-focusing element 31 facing the pressing element 60 and the pressing element 60, and the anti-shake actuator 50 is used for deforming when the power is on to drive the auto-focusing element 31 and the lens 10, and swinging by using the joint of the second end of the supporting elastic body 33 and the pressing element 60 as a base point, so as to realize optical anti-shake.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.