Periscopic anti-shake focusing actuator and camera device

Abstract

The application discloses a periscopic anti-shake focusing actuator, which comprises a mirror body frame, a fixed part and a memory alloy wire, wherein the bottom of the mirror body frame is provided with a plurality of magnetic blocks; the mirror body frame is movably arranged on the fixed part, and the plurality of magnetic blocks are magnetically connected with the fixed part; the fixed part is provided with an elastic arm, the free end of the elastic arm is in abutment with a movable part, and the elastic arm is used for driving the mirror body frame to move along the lens optical axis direction or perpendicular to the optical axis direction; one end of the memory alloy wire is connected with the fixed part, and the other end of the memory alloy wire is connected with the elastic arm; and the distance from the connection point of the memory alloy wire and the elastic arm to the fixed end of the elastic arm is smaller than the arm length of the elastic arm. According to the periscopic anti-shake focusing actuator, the structure is simple, the occupied volume is small, the setting of the memory alloy wire driving the elastic arm utilizes the lever principle, the driving stroke is enlarged, and the focusing and anti-shake correction can be better performed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of camera technology, in particular to a periscopic anti-shake focusing actuator and a camera device. BACKGROUND

[0002] Nowadays, people have higher and higher requirements for the miniaturization and shooting of shooting devices, and the demand for periscopic lens modules is also increasing. Because people need to use camera scenes more and more, the anti-shake and automatic focusing functions of the camera device are in great demand. The focusing and anti-shake of the existing periscopic lens module are driven by two actuators respectively, the structure is complex, the volume is large, and it is not conducive to the miniaturization of the lens module. Moreover, the existing anti-shake driving structure and focusing driving structure have limited stroke, and the focusing effect and shake correction effect are limited. SUMMARY

[0003] The present application aims to at least solve one of the problems in the prior art, and provides a periscopic anti-shake focusing actuator which can drive the lens to focus and correct the shake at the same time, has a simple structure, occupies a small volume, and has a large driving stroke.

[0004] According to the periscopic anti-shake focusing actuator of the first aspect of the present application, it comprises:

[0005] A mirror body holder, a plurality of magnetic blocks are fixedly arranged at the bottom of the mirror body holder;

[0006] A fixed part, the mirror body holder is movably arranged on the fixed part, and the plurality of magnetic blocks are magnetically connected with the fixed part, the fixed part is provided with an elastic arm, the free end of the elastic arm abuts against the mirror body holder, and the elastic arm is used to drive the mirror body holder to move along the lens optical axis direction or perpendicular to the optical axis direction;

[0007] A memory alloy wire, one end of the memory alloy wire is connected with the fixed part, the other end of the memory alloy wire is connected with the elastic arm, and the distance from the connection point of the memory alloy wire and the elastic arm to the fixed end of the elastic arm is less than the arm length of the elastic arm.

[0008] According to the periscopic anti-shake focusing actuator provided by the embodiment of the present application, the mirror body holder is movably arranged on the fixed part, the periscopic lens module is arranged in the mirror body holder, the memory alloy wire is energized to control the memory alloy wire to contract to pull the elastic arm to push the mirror body holder, so that the mirror body holder is controlled to translate along the optical axis to control focusing or the mirror body holder is controlled to translate laterally along the direction perpendicular to the optical axis to correct shake; the focusing and the anti-shake are realized by the memory alloy wire and the elastic arm to control the mirror body holder to translate, the structure is simple, the occupied volume is small, the elastic arm driven by the memory alloy wire utilizes the lever principle to amplify the driving stroke, and the focusing and the anti-shake correction are better; the mirror body holder and the fixed part are fixed by magnetic attraction, the connection between the mirror body holder and the fixed part is more firm, the movement between the mirror body holder and the fixed part is more stable, and the situation that the mirror body holder is raised during translation is prevented.

[0009] According to some embodiments of the present application, two sides of each of two opposite corners of the fixed part are provided with a connecting part, and two sides of each of the other two opposite corners of the fixed part are provided with the elastic arm; the memory alloy wire is provided with four, one end of each memory alloy wire is connected with the corresponding elastic arm, and the other end of each memory alloy wire is connected with the connecting part arranged opposite to the corresponding elastic arm.

[0010] According to some embodiments of the present application, the bottom of the mirror body holder is provided with two pairs of protrusions, each pair of the protrusions is arranged at the middle of the opposite two sides of the bottom of the mirror body holder, and four elastic arms are respectively in abutment with four protrusions.

[0011] According to some embodiments of the present application, the mirror body holder is further provided with a plurality of mounting grooves, the plurality of mounting grooves are respectively arranged on the four sides of the bottom of the mirror body holder, and the plurality of magnetic blocks are one-to-one correspondingly embedded in the plurality of mounting grooves.

[0012] According to some embodiments of the present application, a plurality of bearings are further arranged between the mirror body holder and the fixed part, the plurality of bearings are symmetrically arranged on the fixed part along the movement direction of the mirror body holder, and the bottom end of the mirror body holder is in sliding connection with the plurality of bearings.

[0013] According to some embodiments of the present application, the mirror body holder is further provided with a plurality of wear-resistant plates, and the plurality of wear-resistant plates are respectively arranged at the positions where the mirror body holder and the bearings are connected.

[0014] According to some embodiments of the present application, the fixed part comprises a conductive plate, a substrate and a soft magnetic sheet, the lower end surface of the conductive plate is connected with the substrate, and the soft magnetic sheet is connected with the substrate; the conductive plate comprises a plurality of conductive units, each connecting part is arranged on a corresponding conductive unit, and each adjacent two elastic arms are arranged on a corresponding conductive unit, and the plurality of conductive units are electrically connected with the substrate.

[0015] According to some embodiments of the present application, the mirror holder is provided with a plurality of through grooves, and the memory alloy wire is arranged in the through grooves.

[0016] According to some embodiments of the present application, the elastic arm comprises a connecting part and a deformation part, the connecting part and the deformation part are connected to form the whole elastic arm; the connecting part is arranged vertically on the fixed part, the deformation part is parallel to the mirror holder, and the free end of the deformation part abuts against the mirror holder.

[0017] The camera device according to the second aspect of the present application comprises the periscopic anti-shake focusing actuator according to the first aspect of the present application.

[0018] The camera device according to the present application has at least the following beneficial effects: by adopting the periscopic anti-shake focusing actuator, the driving stroke in the camera device can be increased, the focusing performance and the anti-shake correction effect are better, and the connection between components in the camera device is stable and the movement is smooth.

[0019] Additional aspects and advantages of the present application will be made apparent by the following description and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0020] The present application will be further described below in conjunction with the drawings and embodiments.

[0021] Figure 1 It is a perspective view of the periscopic anti-shake focusing actuator according to the present application.

[0022] Figure 2 It is a top view of the periscopic anti-shake focusing actuator according to the present application.

[0023] Figure 3 It is a bottom view of the mirror holder of the periscopic anti-shake focusing actuator according to the present application.

[0024] Figure 4 It is a structural view of the fixed part and the memory alloy wire of the periscopic anti-shake focusing actuator according to the present application.

[0025] Reference signs: periscopic anti-shake focusing actuator 100, mirror holder 110, magnetic block 111, protruding block 112, mounting groove 113, wear plate 114, through groove 115, fixed part 120, elastic arm 121, connecting part 122, conductive plate 123, conductive unit 1231, substrate 124, soft magnetic sheet 125, memory alloy wire 130. DETAILED DESCRIPTION

[0026] This part will describe the specific embodiments of the present application in detail, the preferred embodiments of the present application are shown in the drawings, the role of the drawings is to supplement the description of the text part with figures, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the present application, but it cannot be understood as a limitation on the protection scope of the present application.

[0027] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0028] In the description of the present application, several meanings are one or more, and the meaning of multiple is more than two, greater than, less than, more than, etc. are not included in the number, and the above, below, etc. are understood to include the number. If it is described as first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0029] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] The periscopic anti-shake focusing actuator 100 according to the embodiments of the present application will be described below with reference to the drawings.

[0031] As Figure 1 And Figure 2As shown, the periscopic anti-shake focusing actuator 100 according to the embodiment of the present application comprises a mirror body holder 110, a fixed part 120 and a memory alloy wire 130. The mirror body holder 110 is provided with a plurality of magnetic blocks 111 at the bottom thereof; the mirror body holder 110 is movably arranged on the fixed part 120, and the plurality of magnetic blocks 111 are magnetically connected with the fixed part 120; the fixed part 120 is provided with an elastic arm 121, the free end of the elastic arm 121 abuts against the mirror body holder 110, and the elastic arm 121 is used to drive the mirror body holder 110 to move along the lens optical axis direction or the direction perpendicular to the optical axis direction; one end of the memory alloy wire 130 is connected with the fixed part 120, and the other end of the memory alloy wire 130 is connected with the elastic arm 121, and the distance from the connection point of the memory alloy wire 130 with the elastic arm 121 to the fixed end of the elastic arm 121 is less than the arm length of the elastic arm 121.

[0032] The fixed part 120 is square, the mirror body holder 110 is movably arranged on the fixed part 120, and the mirror body holder 110 can be driven to slide along the X-axis direction and the Y-axis direction of the plane on which the fixed part 120 is located, wherein the X-axis direction is perpendicular to the optical axis direction, and the Y-axis direction is the same as the optical axis direction. The bottom of the mirror body holder 110 is fixedly provided with four magnetic blocks 111, two of which are arranged at the middle positions of the opposite sides of the bottom of the mirror body holder 110, and the other two are arranged at the middle positions of the other opposite sides of the bottom of the mirror body holder 110. Through the arrangement of the magnetic blocks 111, the magnetic connection is formed between the four sides of the mirror body holder 110 and the fixed part 120, the firmness of the sliding connection between the mirror body holder 110 and the fixed part 120 is ensured, the mirror body holder 110 is not prone to dislocation, and the side edge of the mirror body holder 110 is prevented from being raised when the mirror body holder 110 is translated relative to the fixed part 120. In other embodiments of the present application, the number of magnetic blocks 111 can also be set to two, three, six or any number, and as long as the whole mirror body holder 110 can be stably movably connected with the fixed part 120.

[0033] As shown in FIG. 1, the periscopic anti-shake focusing actuator 100 according to the embodiment of the present application comprises a mirror body holder 110, a fixed part 120 and a memory alloy wire 130. Figure 4As shown, the elastic arms 121 are arranged one-to-one with the memory alloy wires 130, the free ends of the elastic arms 121 abut against the side edges of the lens holder 110, by controlling the resistance of the memory alloy wires 130, the length of the memory alloy wires 130 can be accurately controlled, so as to control the elastic arms 121 to push the lens holder 110 to slide relative to the fixed part 120, and the sliding distance of the lens holder 110 can be accurately controlled, accurate focusing and good anti-shake correction are realized. The elastic arms 121 and the memory alloy wires 130 can be provided in multiple groups, and through the cooperation of multiple groups of elastic arms 121 and memory alloy wires 130 in different directions, the translation and reset of the lens holder 110 are realized, and the elastic arms 121 on each different side wall of the lens holder 110 can clamp or drive the lens holder 110, so as to ensure the stability of the lens holder 110 during translation and increase the movement stroke of the lens holder 110.

[0034] According to the periscope anti-shake focusing actuator 100, the lens holder 110 is movably arranged on the fixed part 120, the periscope lens module is installed in the lens holder 110, by energizing the memory alloy wire 130, the memory alloy wire 130 is controlled to contract to pull the elastic arm 121 to push the lens holder 110, so as to realize the control of the lens holder 110 to translate along the optical axis direction to control the focusing or control the lens holder 110 to translate laterally along the direction perpendicular to the optical axis to correct the shake; the periscope anti-shake focusing actuator 100 has the advantages that the focusing and the anti-shake are realized by controlling the lens holder 110 to translate through the memory alloy wire 130 and the elastic arm 121, the structure is simple, the occupied volume is small, the setting of the memory alloy wire 130 driving the elastic arm 121 utilizes the lever principle, the driving stroke is amplified, and the focusing and the anti-shake correction can be better performed; the lens holder 110 and the fixed part 120 are fixed through magnetic attraction, so that the connection between the lens holder 110 and the fixed part 120 is more firm, and the movement of the lens holder 110 relative to the fixed part 120 is more stable, and the situation that the lens holder 110 is warped during translation is prevented.

[0035] As Figure 4As shown in the drawings, in some embodiments of the present application, two sides of each of the two diagonals of the fixing part 120 are provided with the connecting part 122, and two sides of each of the other two diagonals of the fixing part 120 are provided with the elastic arm 121; the memory alloy wire 130 is provided with four, one end of each memory alloy wire 130 is connected with the corresponding elastic arm 121, and the other end of each memory alloy wire 130 is connected with the connecting part 122 opposite to the corresponding elastic arm 121. The connecting part 122 of each side surface of the fixing part 120 corresponds to the elastic arm 121 of the opposite side surface, the two ends of each memory alloy wire 130 are connected with a set of opposite connecting part 122 and elastic arm 121 respectively, and each memory alloy wire 130 is parallel to the side edge of the fixing part 120 where it is located; when focusing is needed, the two memory alloy wires 130 in the Y-axis direction are energized to contract, drive the elastic arm 121 connected therewith to push the lens holder 110 to translate along the Y-axis direction; when jitter correction is needed, the two memory alloy wires 130 in the X-axis direction are energized to contract, drive the elastic arm 121 connected therewith to push the lens holder 110 to translate along the X-axis direction. Through this arrangement, the arrangement of the memory alloy wire 130 and the elastic arm 121 is symmetrical and orderly, which can more stably drive the lens holder 110 to translate; the memory alloy wires 130 arranged in different directions are different in height and staggered with each other, by setting the different heights of the memory alloy wires 130, the contact or entanglement between the memory alloy wires 130 is prevented, and the memory alloy wires 130 are facilitated to be controlled.

[0036] As shown in the drawings, Figure 2 and Figure 3 As shown in the drawings, in some embodiments of the present application, the bottom of the lens holder 110 is provided with two pairs of protrusions 112, each pair of protrusions 112 is arranged at the middle of the opposite two sides of the bottom of the lens holder 110, and the four elastic arms 121 abut against the four protrusions 112 respectively. The free end of each elastic arm 121 is located at the middle of the side surface of the fixing part 120 where it is located, and the free end of each elastic arm 121 abuts against the middle position of the side edge of the lens holder 110, i.e. the protrusion 112, through this arrangement, when the elastic arm 121 pushes the lens holder 110 to slide relative to the fixing part 120, it is ensured that the lens holder 110 is linearly translated and is not easy to deflect, which prevents the lens optical axis angle from deviating and affects imaging.

[0037] As shown in the drawings, Figure 1 and Figure 2As shown in the drawings, in some embodiments of the present application, the mirror body frame 110 is also provided with a plurality of installation grooves 113, which are respectively arranged on the four sides of the bottom of the mirror body frame 110, and the plurality of magnetic blocks 111 are correspondingly embedded in the plurality of installation grooves 113. The installation grooves 113 are provided with four, two of which are respectively arranged at the middle positions of the two sides of the X-axis direction of the mirror body frame 110, and the other two are respectively arranged at the middle positions of the two sides of the Y-axis direction of the mirror body frame 110, and the opening directions of the four installation grooves 113 are all upward, and the magnetic blocks 111 are embedded in the installation grooves 113, so as to ensure that the magnetic blocks 111 can be firmly installed on the mirror body frame 110, and avoid being separated from the mirror body frame 110 due to the magnetic attraction of the fixing part 120. In other embodiments, the number of installation grooves 113 can be other numbers corresponding to the number of magnetic blocks 111, in addition to four.

[0038] In some embodiments of the present application, a plurality of bearings are arranged between the mirror body frame 110 and the fixing part 120, the plurality of bearings are symmetrically arranged on the fixing part 120 along the movement direction of the mirror body frame 110, and the bottom end of the mirror body frame 110 is in sliding connection with the plurality of bearings. Four bearings are arranged between the mirror body frame 110 and the fixing part 120, each bearing is arranged between the protrusion 112 of the mirror body frame 110 and the fixing part 120, the bearing is fixedly arranged on the fixing part 120, and the mirror body frame 110 is in sliding connection with the bearing; when the mirror body frame 110 is driven to translate by the elastic arm, the contact area between the mirror body frame 110 and the fixing part 120 is reduced through the support of the bearing, and the mirror body frame 110 can move relative to the fixing part 120 more easily and with less force under the assistance of the bearing.

[0039] As shown in the drawings, Figure 2 and Figure 3 As shown in the drawings, in some embodiments of the present application, the mirror body frame 110 is also provided with a plurality of wear-resistant plates 114, which are respectively arranged at the positions where the mirror body frame 110 is connected with the bearings. The wear-resistant plates 114 are provided with four, each wear-resistant plate 114 is correspondingly arranged at the position of each of the four protrusions 112, and the wear-resistant plate 114 completely covers the side surface to the bottom of the protrusion 112; when the elastic arm 121 abuts against the protrusion 112, the wear-resistant plate 114 in the middle serves as a buffer, and when the protrusion 112 is in sliding friction with the bearing, the protrusion 112 slides between the wear-resistant plate 114 and the bearing; through the arrangement of the wear-resistant plate 114, the main body of the mirror body frame 110 can be protected, and the wear of the abutting position of the mirror body frame 110 with the elastic arm 121 and the sliding friction part with the bearing during movement can be greatly reduced.

[0040] As shown in the drawings, Figure 4As shown in the drawings, in some embodiments of the present application, the fixed part 120 includes a conductive plate 123, a substrate 124 and a soft magnetic sheet 125, the lower end surface of the conductive plate 123 is connected with the substrate 124, and the soft magnetic sheet 125 is connected with the substrate 124; the conductive plate 123 includes a plurality of conductive units 1231, each connecting part 122 is arranged on a corresponding conductive unit 1231, each adjacent two elastic arms 121 is arranged on a corresponding conductive unit 1231, and the plurality of conductive units 1231 are electrically connected with the substrate 124. Among them, the substrate 124 serves as a common power supply end; the soft magnetic sheet 125 covers the entire fixed part 120, ensuring the stability of the magnetic connection between the lens holder 110 and the fixed part 120; in other embodiments, the conductive plate 123 can also be directly set as a conductive plate 123 made of soft magnetic material to realize magnetic connection with the lens holder 110. The conductive plate 123 includes six conductive units 1231, four connecting parts 122 are arranged one by one corresponding to four conductive units 1231; among the four elastic arms 121, each adjacent two elastic arms 121 form a pair, and the two pairs of elastic arms 121 are arranged on the other two conductive units 1231. Through the arrangement of the conductive units 1231, one-to-one power supply between the conductive units 1231 and the connecting parts 122 is realized, which can more simply and efficiently control the current of each connecting part 122. Since one connecting part 122 corresponds to one memory alloy wire 130, the energization of each memory alloy wire 130 can be controlled individually, and the extension and contraction of each memory alloy wire 130 can be accurately controlled individually.

[0041] As shown in the drawings, Figure 1 and Figure 3 As shown in the drawings, in some embodiments of the present application, the lens holder 110 is provided with a plurality of through slots 115, and the memory alloy wires 130 are arranged in the through slots 115. The lens holder 110 is provided with four through slots 115, two of which are arranged along the X-axis movement direction of the lens holder 110, and the other two are arranged along the Y-axis movement direction of the lens holder 110; the four memory alloy wires 130 correspond one by one to the four through slots 115, and one memory alloy wire 130 is located in one through slot 115. Through the arrangement of the through slots 115, the memory alloy wires 130 can be arranged between the lens holder 110 and the fixed part 120 without affecting the normal work of the memory alloy wires 130, so that the structure of the periscopic anti-shake focusing actuator 100 is more compact, the volume is reduced, and the control is saved. Among them, in other embodiments, the number of through slots 115 can be two, three or any number, and the through slots 115 can be arranged one by one corresponding to the memory alloy wires 130, or one through slot 115 can pass through a plurality of memory alloy wires 130.

[0042] As shown in the drawings, Figure 1 and Figure 4As shown, in some specific embodiments of the present invention, the elastic arm 121 includes a connecting portion and a deformable portion, which are connected to form the entire elastic arm 121. The connecting portion is vertically disposed on the fixed portion 120, and the deformable portion is parallel to the lens frame 110, with the free end of the deformable portion abutting against the lens frame 110. The elastic arm 121 includes a connecting portion and a deformable portion. The connecting portion is the fixed end where the elastic arm 121 connects to the fixed portion 120. One end of the deformable portion is connected to the connecting portion, and the other end of the deformable portion is the free end of the elastic arm 121. The connecting portion and the deformable portion are connected to form a complete elastic arm 121, and the length of the connecting portion is less than the length of the deformable portion. The connecting portion of the elastic arm 121 is perpendicular to the plane where the fixed portion 120 is located. The deformable portion of the elastic arm 121 is parallel to the side of the lens frame 110 on which it is located, and the free end of the deformable portion abuts against the lens frame 110. One end of the shape memory alloy wire 130 is connected to the deformable part near the connecting part, and the other end is connected to the fixing part 120. This arrangement allows for a longer lever arm from the free end of the elastic arm 121 to the connection point of the shape memory alloy wire 130, thereby achieving a greater stroke. By energizing the shape memory alloy wire 130, the wire is controlled to contract and pull the free end of the elastic arm 121 to push the mirror frame 110 to translate.

[0043] A camera device according to a second aspect of the present invention includes a periscope-type image stabilization and focusing actuator 100 according to the first aspect of the present invention described above.

[0044] The camera device according to the embodiments of the present invention has at least the following beneficial effects: by adopting the periscope-type image stabilization focusing actuator 100 described above, the movement of the lens frame 110 can be precisely controlled by controlling the contraction of the shape memory alloy wire 130, and it has a larger drive stroke, better focusing performance and image stabilization compensation effect, while not generating excessive magnetism to interfere with the camera device; the periscope-type image stabilization focusing actuator 100 has stable connections between components and smooth movement, and has a compact structure, which facilitates the miniaturization of the camera device.

[0045] Other configurations and operations of the camera device according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0046] The following is for reference. Figures 1 to 4 The periscope-type image stabilization and focusing actuator 100 according to an embodiment of the present invention is described in detail with reference to a specific example. It is to be understood that the following description is merely illustrative and not intended to limit the invention in any specific way.

[0047] The periscopic anti-shake focusing actuator 100 comprises a mirror body frame 110, a fixed part 120 and four memory alloy wires 130. Two connecting parts 122 are arranged on each of the two opposite corners of the fixed part 120, and two elastic arms 121 are arranged on each of the other two opposite corners of the fixed part 120; one end of each memory alloy wire 130 is connected with a corresponding elastic arm 121, and the other end of each memory alloy wire 130 is connected with a connecting part 122 arranged opposite to the corresponding elastic arm 121.

[0048] The mirror body frame 110 is slidingly arranged on the fixed part 120, and the bottom of the mirror body frame 110 is provided with two pairs of protrusions 112, each pair of protrusions 112 being arranged at the middle of the opposite side of the bottom of the mirror body frame 110, and the four elastic arms 121 are respectively in abutment with the four protrusions 112. The four sides of the bottom of the mirror body frame 110 are also respectively provided with one mounting groove 113, and one magnetic block 111 is embedded in each mounting groove 113, and the mirror body frame 110 is magnetically connected with the fixed part 120 through the magnetic blocks 111. The mirror body frame 110 is also provided with four through grooves 115, and one memory alloy wire 130 is arranged in each through groove 115.

[0049] The mirror body frame 110 and the fixed part 120 are also provided with four bearings, two of which are symmetrically arranged at the middle of the two sides of the mirror body frame 110 along the Y-axis direction, and the other two are symmetrically arranged at the middle of the two sides of the mirror body frame 110 along the X-axis direction; and the mirror body frame 110 is provided with wear-resistant plates 114 at the positions slidingly connected with the bearings.

[0050] The fixed part 120 further comprises a conductive plate 123, a substrate 124 and a soft magnetic sheet 125, the lower end surface of the conductive plate 123 is connected with the substrate 124, and the soft magnetic sheet 125 is connected with the substrate 124; wherein the substrate 124 serves as a common power supply end; the soft magnetic sheet 125 covers the entire fixed part 120, ensuring the stability of the magnetic attraction connection between the mirror body frame 110 and the fixed part 120; the conductive plate 123 comprises six conductive units 1231, and four of the conductive units 1231 are arranged one by one corresponding to the four connecting parts 122; among the four elastic arms 121, every two adjacent elastic arms 121 form a pair, and the two pairs of elastic arms 121 are arranged on the other two conductive units 1231.

[0051] According to the periscopic anti-shake focusing actuator 100 of the embodiment of the present application, by being arranged as such, at least some of the following effects can be achieved: the mirror body holder 110 is movably arranged on the fixed part 120, the periscopic lens module is installed in the mirror body holder 110, the memory alloy wire 130 is controlled to contract to pull the elastic arm 121 to push the mirror body holder 110 by being electrified, so as to realize the control of the mirror body holder 110 to translate along the optical axis direction to control the focusing or to translate laterally along the direction perpendicular to the optical axis to perform the shake correction; the focusing and the anti-shake are realized by the memory alloy wire 130 and the elastic arm 121 controlling the mirror body holder 110 to translate, the structure is simple, the occupied volume is small, the setting of the memory alloy wire 130 driving the elastic arm 121 utilizes the lever principle, amplifies the driving stroke, and can better perform the focusing and the anti-shake correction; the mirror body holder 110 and the fixed part 120 are fixed by magnetic attraction, so that the connection between the mirror body holder 110 and the fixed part 120 is more firm, and the movement between the mirror body holder 110 and the fixed part 120 is more stable, and the situation that the mirror body holder 110 is warped in the process of translation is prevented.

[0052] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0053] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A periscope-type image stabilization focusing actuator, characterized in that, include: The mirror frame has several magnetic blocks fixedly installed at its bottom; The lens frame is movably mounted on the fixed part, and a plurality of magnetic blocks are magnetically connected to the fixed part. The fixed part is provided with an elastic arm, the free end of which abuts against the lens frame. The elastic arm is used to drive the lens frame to move along the optical axis of the lens or perpendicular to the optical axis. A shape memory alloy wire, one end of which is connected to the fixing part, and the other end of which is connected to the elastic arm, wherein the distance from the connection point of the shape memory alloy wire and the elastic arm to the fixing end of the elastic arm is less than the arm length of the elastic arm. The fixing part has a connecting part on both sides of each of the two opposite corners, and the fixing part has an elastic arm on both sides of each of the other two opposite corners; four shape memory alloy wires are provided, one end of each shape memory alloy wire is connected to the corresponding elastic arm, and the other end of each shape memory alloy wire is connected to the connecting part that is opposite to the corresponding elastic arm. The elastic arm includes a connecting portion and a deformable portion, which are connected to form the entire elastic arm; the connecting portion is vertically disposed on the fixed portion, the deformable portion is parallel to the lens frame, and the free end of the deformable portion abuts against the lens frame; The length of the connecting portion is less than the length of the deformable portion. One end of the shape memory alloy wire is connected to the deformable portion near the connecting portion, and the other end of the shape memory alloy wire is connected to the fixing portion.

2. The periscope-type image stabilization and focusing actuator according to claim 1, characterized in that, The bottom of the lens frame is provided with two pairs of protrusions, each pair of protrusions being located in the middle of opposite sides of the bottom of the lens frame, and the four elastic arms abutting against the four protrusions respectively.

3. The periscope-type image stabilization and focusing actuator according to claim 1, characterized in that, The lens frame is also provided with a number of mounting slots, which are respectively located on the four sides of the bottom of the lens frame, and the magnetic blocks are embedded in the mounting slots one by one.

4. The periscope-type image stabilization and focusing actuator according to claim 1 or 2, characterized in that, A plurality of bearings are also provided between the lens frame and the fixing part. The plurality of bearings are symmetrically arranged on the fixing part along the movement direction of the lens frame, and the bottom end of the lens frame is slidably connected to the plurality of bearings.

5. The periscope-type image stabilization and focusing actuator according to claim 4, characterized in that, The mirror frame is also provided with several wear-resistant plates, which are respectively disposed at the connection position between the mirror frame and the bearing.

6. The periscope-type image stabilization and focusing actuator according to claim 1, characterized in that, The fixing part includes a conductive plate, a substrate and a soft magnetic sheet. The lower end face of the conductive plate is connected to the substrate, and the soft magnetic sheet is connected to the substrate. The conductive plate includes a plurality of conductive units. Each connecting part is disposed on a corresponding conductive unit. Each pair of adjacent elastic arms is disposed on a corresponding conductive unit. The plurality of conductive units are electrically connected to the substrate.

7. The periscope-type image stabilization and focusing actuator according to claim 1 or 6, characterized in that, The mirror frame is provided with several through slots, and the shape memory alloy wires are threaded through the through slots.

8. A camera device, characterized in that, Includes a periscope-type image stabilization and focusing actuator according to any one of claims 1 to 7.

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