Optical element deflection driver with damping structure and optical device

Abstract

The utility model relates to an optical element deflection driver with a damping structure and an optical device with the same. The optical element deflection driver with the damping structure comprises a fixed part, a movable part, a driving device, an elastic supporting part and the damping structure. The axial direction and the radial direction of the movable part are of a structure perpendicular to each other, the driving device is suitable for being connected with the movable part to drive the movable part to rotate, the rotating axis of the movable part intersects with the axial axis of the movable part, and the fixed part is provided with an elastic supporting part which is connected with the movable part to support the movable part. The radial end of the movable part is connected with the side wall of the fixed part through a damping structure. The optical element driving mechanism can reduce the vibration of the bearing part in the optical element driving mechanism and the optical element borne by the bearing part.

Description

Technical Field

[0001] The present application relates to the field of optical technology, and in particular to an optical element deflection driver with a damping structure and an optical device. Background Art

[0002] In order to focus, adjust the beam tilt error, correct the light path propagation direction and stabilize the beam, a driving mechanism for the deflection optical element is usually provided in the imaging camera equipment. The existing optical element driving mechanism, such as the patent document CN117950148A, is usually only provided with a fixed mounting seat, a lens carrier and a deflection driving device, and the deflection driving device is used to drive the lens carrier and the optical element it carries to deflect. However, it is impossible to suppress the vibration of the lens carrier during the deflection movement and after reaching the preset position, which affects the use effect of the optical element.

[0003] Therefore, how to reduce the vibration of the carrier in the optical element driving mechanism and the optical element it carries has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0004] In order to reduce the vibration of a carrier in an optical element driving mechanism and an optical element carried by the carrier, the present application provides an optical element yaw driver and an optical device with a damping structure.

[0005] To achieve the purpose of the utility model, an optical element deflection driver with a damping structure is provided, comprising:

[0006] A fixed part, a movable part, a driving device, an elastic supporting part and a damping structure;

[0007] The axial and radial directions of the movable part are perpendicular to each other, the driving device is suitable for connecting with the movable part to drive the movable part to rotate, the rotation axis of the movable part intersects with the axis of the movable part along its axial direction, the fixed part is provided with an elastic supporting part, the elastic supporting part is connected to the movable part to support the movable part, and one end of the movable part along its radial direction is connected to the fixed part through a damping structure.

[0008] According to another aspect of the present application, an optical device is provided, comprising the aforementioned optical element yaw driver with a damping structure.

[0009] The present application provides a mounting base for the movable part and the optical element carried by the movable part through a fixed part, drives the movable part and the optical element carried by the movable part to deflect by a driving device, and the fixed part provides support and elastic buffering for the movable part through an elastic supporting part, is connected to the movable part through a damping structure and uses the damping structure to reduce vibration of the movable part, thereby achieving rapid positioning. Therefore, compared with the existing optical element driving device, the present application can reduce the vibration of the movable part and the optical element carried by the movable part, shorten the stabilization time required for the two to reach the preset position, thereby ensuring the use effect of the optical element. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A schematic structural diagram of an optical element yaw driver with a damping structure according to an embodiment of the present application is shown;

[0011] Figure 2 Show Figure 1 A schematic structural diagram of an embodiment;

[0012] Figure 3 Show Figure 1 A schematic structural diagram of an embodiment;

[0013] Figure 4 Show Figure 1 A cross-sectional structural diagram of an embodiment;

[0014] Figure 5 Show Figure 1 A schematic structural diagram of a housing of an embodiment;

[0015] Figure 6 Show Figure 1 A schematic diagram of the partial structure of the movable part of the embodiment;

[0016] Figure 7 A schematic structural diagram showing a base according to another embodiment of the present application;

[0017] Figure 8 Show Figure 7 A partial enlarged view of the connection between the base and the movable part of the embodiment;

[0018] Fig. 9 Show Figure 7 A cross-sectional view of the connection between the base and the movable part of the embodiment;

[0019] Fig.10 Show Figure 4 A cross-sectional view of the connection between the fixed part and the movable part of the embodiment;

[0020] Fig.11 Show Figure 4 A partial enlarged view of the connection between the fixed part and the movable part of the embodiment;

[0021] Fig.12 Show Figure 1 A schematic diagram of the partial structure of the elastic support portion of an embodiment.

[0022] Fixed part 100, shell 110, connecting column 111, second opening 112, heat dissipation hole 113, base 120, damping groove 121, movable part 200, axial A of movable part, radial B of movable part, movable groove 210, movable column 220, coil 310, permanent magnet 320, elastic supporting part 400, stationary part 410, elastic part 420, supporting part 430, damping structure 500, damping glue 510. DETAILED DESCRIPTION

[0023] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0024] Among them, it should be understood that the directions or positional relationships indicated by terms such as "length", "width", "height", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0025] In addition, in order to better illustrate the present application, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0026] The present application provides an optical element deflection driver with a damping structure, including a fixed part, a movable part 200, a driving device, an elastic support part 400 and a damping structure. The movable part is an axisymmetric element, having an axial direction and a radial direction that are perpendicular to each other. It should be noted that the movable part provided in the present application can be the optical element itself that is driven by the deflection, or it can be a movable bearing member that provides support for the optical element, which is convenient for connection with the optical element. When the movable part is an optical element, one end of the optical element along the optical axis direction is supported by the elastic support part, and the radial end is connected to the fixed part through a damping structure, and the driving end of the driving device is connected to the side wall of the optical element to drive its rotation to realize the deflection drive. When the movable part is only a movable bearing member that provides support for the optical element, the fixed part is provided with an elastic support part, and the elastic support part is connected to the movable part to provide elastic support for it, and the optical element is installed at the other end of the movable part along its axial direction, and the optical axis direction of the optical element is consistent with the axial direction of the movable part. The driving device is suitable for connecting with the movable part 200 to drive the movable part 200 to rotate. The rotation axis of the movable part 200 intersects with the axis of the movable part 200 along its axial direction. An elastic support part is provided on one side of the fixed part, and the elastic support part is connected to the movable part to support the movable part. The present application does not make specific restrictions on the connection position of the elastic support part on the movable part, as long as it can provide elastic support. The elastic support part can be located at the top or bottom of the movable part, or it can be suspended in the middle of the movable part. In one possible implementation, the elastic support part is installed at one end of the movable part along its axial direction ( Figure 1 The movable part 200 is connected to the side wall of the fixed part through a damping structure at one end along its radial direction.

[0027] The present application provides a mounting base for the movable part 200 and the optical element carried by the deflection activity by setting a fixed part, drives the movable part 200 and the optical element carried by the movable part 200 to deflect by setting a driving device, and the fixed part provides support and elastic buffering for the movable part 200 through the elastic support part 400, is connected to the movable part 200 through the damping structure and uses the damping structure to reduce vibration for the movable part 200. Therefore, compared with the existing optical element driving device, the present application can reduce the vibration of the movable part 200 and the optical element carried by it, shorten the stabilization time required after the two reach the preset position, thereby ensuring the use effect of the optical element.

[0028] In a possible implementation, the rotation axis of the movable part 200 is consistent with its radial direction.

[0029] In a possible implementation, the elastic support part 400 is a spring sheet, and the movable part 200 is located on one side of the spring sheet structure. The movable part 200 of the present application uses the spring sheet to indirectly contact the fixed part, and the fixed part uses the spring sheet to elastically support the movable part 200, and the elastic force of the spring sheet is used to reduce the vibration of the deflected movable part 200 and the optical element, which can shorten the stabilization time required for the movable part 200 and the optical element to reach the preset position.

[0030] Furthermore, the reed structure is as follows Fig.12 As shown, it includes a stationary part, an elastic part (also called a yoke part), and a supporting part. The stationary part is fixed on the fixed part, preferably fixed on the upper side of the base. The stationary part is elastically connected to the fixed part through the elastic part so that the spring has an elastic supporting effect. The supporting part is connected to the movable part, thereby elastically supporting the movable part. Furthermore, an opening matching the supporting part is provided in the middle of the stationary part. The supporting part is rectangular. The sides of the rectangular structure of the supporting part are connected to the stationary part through the elastic part. There are more than two elastic parts, and the more than two elastic parts are distributed around the central circumference of the rectangular structure of the supporting part.

[0031] In a possible implementation, the damping structure includes a connecting column 111, a movable groove 210 and a first damping member; a side wall of the fixed part is provided with a protruding connecting column 111, and the movable part 200 is provided with a movable groove 210, and the movable groove 210 is located at one end of the movable part 200 along its radial direction, and at a side wall of the movable part 200 along its axial direction (it can also be located at a side wall of the movable part 200 along its radial direction, and the opening and insertion direction are flexibly selected according to actual conditions, and the connecting column 111 needs to be able to penetrate into the movable groove 210, and it can be elastically connected to the inner wall of the movable groove 210 through the first damping member). The number of movable grooves 210 and connecting columns 111 is consistent and they are arranged one by one. The opening of the movable groove 210 and the connecting column 111 are arranged relatively to each other. The end of the connecting column 111 away from the fixed part penetrates into the movable groove 210 through the opening of the movable groove 210. A rotation gap is provided between the outer wall of the penetrated end of the connecting column 111 and the inner wall of the movable groove 210 for the movable groove 210 to rotate with the movable part 200. The outer wall of the penetrated end of the connecting column 111 and the inner wall of the movable groove 210 are connected by a first damping member.

[0032] In a possible implementation, the movable part 200 is provided with a central axis, the axial direction of the central axis is consistent with the axial direction of the movable part, there are more than two movable grooves 210, and the more than two movable grooves 210 are distributed circumferentially around the central axis of the movable part 200.

[0033] In a possible implementation, the first damping member is a damping glue 510 filled in the movable groove 210, the damping glue 510 wraps one end of the connecting column 111 that penetrates the movable groove 210, and the outer wall of the end of the connecting column 111 that penetrates the movable groove 210 and the inner wall of the movable groove 210 are elastically connected by the damping glue 510. When the movable groove 210 moves with the movable part 200, the flexibility of the damping glue 510 filled in the movable groove 210 and wrapped outside the connecting column 111 is used to absorb vibration, and the impact force is buffered, so that the vibration of the movable part 200 can be quickly stabilized.

[0034] In a possible implementation, the length direction of the connecting column 111 is consistent with the axial direction of the movable part 200, and one end of the length of the connecting column 111 penetrates into the movable groove 210. Further, the connecting column 111 is located on the inner wall of one end of the shell 110 provided with the second opening 112, and the side wall of the movable part 200 along its axial direction close to the second opening 112 is provided with an movable groove 210, and the opening direction of the movable groove 210 is consistent with the axial direction of the movable part, and the movable groove 210 is close to the outer edge of the movable part 200 along its radial direction. Specifically: the movable groove 210 is located at one end of the movable part 200 along its radial direction, and on one side wall of the movable part 200 along its axial direction, and the opening direction of the movable groove 210 is consistent with the axial direction of the movable part 200. Figure 4 As shown, the connecting column 111 of the shell 110 protrudes downward and penetrates into the movable groove 210 on the upper side of one radial end of the movable part 200, and is connected to the inner wall of the movable groove 210 through the first damping member, and the elastic expansion and contraction ability of the first damping member is used to reduce the vibration of the movable part 200.

[0035] In a possible implementation, the damping structure includes a movable column 220, a damping groove 121 and a second damping member; the movable part 200 is provided with a protruding movable column 220 along its radial side wall, and the fixed part side wall is provided with a damping groove 121, the number of movable columns 220 and the damping groove 121 are the same and are arranged one by one, the opening of the damping groove 121 and the movable column 220 are arranged opposite to each other, and the end of the movable column 220 away from the movable part 200 penetrates into the damping groove 121 through the opening of the damping groove 121, and a rotation gap is provided between the outer wall of the penetrated end of the movable column 220 and the inner wall of the damping groove 121 for the movable column 220 to rotate with the movable part 200, and the outer wall of the penetrated end of the movable column 220 and the inner wall of the damping groove 121 are connected by the second damping member.

[0036] In a possible implementation, the movable part 200 is provided with a central axis, the axial direction of the central axis is consistent with the axial direction of the movable part, and there are more than two movable columns 220, which are distributed circumferentially around the central axis.

[0037] In a possible implementation, the length direction of the movable column 220 is consistent with the radial direction of the movable part 200, and one end of the length of the movable column 220 penetrates into the damping groove 121. Furthermore, the second damping member is a damping glue 510 filled in the damping groove 121, and the damping glue 510 wraps the end of the movable column 220 that penetrates into the damping groove 121. The outer wall of the penetrated end of the movable column 220 is elastically connected to the inner wall of the damping groove 121 through the damping glue 510. A filling opening is provided on the side wall of the damping groove 121, and the filling opening of the damping groove 121 and the groove (structure) opening of the damping groove 121 (the groove structure opening for the movable column 220 to penetrate) are respectively located on two adjacent sides of the groove cavity of the damping groove 121. The groove opening and the filling opening of the damping groove 121 are connected. It should be noted that the present application does not specifically limit the method of filling the damping glue 510 into the damping groove 121. A number of pre-formed small beads of damping glue 510 can be filled, or liquid damping glue 510 can be poured into the damping glue 510, as long as there is no leakage before the glue is formed into a clot. If the orientation causes the risk of leakage during the filling, a baffle can be used for simple leak prevention, and it can be peeled off after the clot is formed. The baffle is only an auxiliary tool used in the assembly process and cannot be understood as a part of the optical element yaw actuator with a damping structure provided by the present application.

[0038] In a possible implementation, both the first damper and the second damper are springs, and the elastically retractable ends of the spring (first damper) are respectively connected to the outer wall of the end of the connecting column 111 that penetrates (the movable groove 210) and the inner wall of the movable groove 210; the elastically retractable ends of the spring (second damper) are respectively connected to the outer wall of the end of the movable column 220 that penetrates (the damping groove 121) and the inner wall of the damping groove 121. Further, there are more than two first dampers, and the end of the connecting column 111 that penetrates is connected to the inner wall of the movable groove 210 through more than two first dampers, and the more than two first dampers are distributed around the axis of the connecting column 111. There are more than two second dampers, and the end of the movable column 220 that penetrates is connected to the inner wall of the damping groove 121 through more than two first dampers. Furthermore, one axial end of the connecting column 111 penetrates into the movable groove 210, and the elastic expansion and contraction directions of at least two first damping members intersect. For example, there are more than three first damping members, one of which is located at one axial end of the connecting column 111, and the remaining first damping members are distributed circumferentially around the axis of the connecting column 111.

[0039] In one possible implementation, Fig. 9 and Fig.10 As shown, a gap is provided between the movable part 200 and the fixed part 100, and a damping structure 500 is provided in the gap between the movable part 200 and the fixed part 100. The damping structure 100 adopts preformed damping glue with strong viscosity, and utilizes the colloid to achieve damping of the movement of the movable part 200 and rapid positioning after it is in place, without providing a groove for holding the glue block.

[0040] In one possible implementation, the fixed part includes a base 120 and a shell 110, and the side walls at opposite ends of the shell 110 are respectively provided with a first opening and a second opening 112, and the end of the shell 110 provided with the first opening is connected to the base 120, the movable part 200 and the driving device are both located in the shell 110, the elastic support part 400 is located between the base 120 and the movable part 200, the movable part 200 is connected to the side wall of the shell 110 through a damping structure, and the second opening 112 is arranged opposite to the movable part 200 to allow the deflected optical element to pass through the shell 110.

[0041] In a possible implementation, one end of the housing 110 having the first opening is detachably connected to the base 120, preferably in a plug-in and snap-in manner.

[0042] In a possible implementation, the base 120 includes two intersecting and connected panels, the base 120 is L-shaped, the shell 110 matches the base 120, the shell 110 is in an elongated shape as a whole, the shell 110 is provided with a first opening and a second opening 112 on the side walls at both ends along the length direction of the shell 110, and the shell 110 is provided with a third opening on one side wall along the width direction of the shell. The first opening matches one of the L-shaped panels of the base 120, and the third opening matches the other L-shaped panel of the base 120. The base 120 covers the first opening and the third opening of the shell 110 and is connected to the side wall of the shell 110. The second opening 112 matches the optical element, and a sway gap is provided between the outer wall of the optical element and the inner wall of the second opening 112 for the optical element to sway.

[0043] In a possible implementation, the side wall of the housing 110 is provided with heat dissipation holes 113, and there are more than two heat dissipation holes 113. Furthermore, the housing 110 is also provided with a handle, and the present application does not impose any specific restrictions on the shape of the handle, as long as the housing 110 can be held by the handle, and the housing 110 on the base 120 can be disassembled and removed. Preferably, two long strip-shaped heat dissipation holes 113 are provided on one side wall of the housing 110, and the two heat dissipation holes 113 are arranged opposite to each other. The side wall of the housing 110 between the two heat dissipation holes 113 serves as a handle, and fingers are inserted into the housing 110 through the two heat dissipation holes 113 to hold the housing 110 and remove the housing 110 from the base 120.

[0044] In a possible implementation, the driving device includes a permanent magnet 320 and a coil 310, and uses Maxwell force to drive the fast deflection of the movable part 200 and the optical element connected thereto. Further, the permanent magnet 320 is mounted on the inner wall of the housing 110, and the coil 310 is fixedly connected to the movable part 200. The number of the permanent magnet 320 and the coil 310 is the same and is arranged one by one, and there are more than two coils 310, and the more than two coils 310 are distributed circumferentially around the central axis.

[0045] According to another aspect of the present application, an optical device is provided, the optical device comprising the aforementioned optical element yaw driver with a damping structure. For example, the optical device further comprises an optical element, and the optical element yaw driver with a damping structure is suitable for driving the optical element to yaw.

[0046] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. An optical element yaw actuator with a damping structure, characterized in that: include: A fixed part, a movable part, a driving device, an elastic supporting part and a damping structure; The axial and radial directions of the movable part are perpendicular to each other, the driving device is suitable for connecting with the movable part to drive the movable part to rotate, the rotation axis of the movable part intersects with the axis of the movable part along its axial direction, the fixed part is provided with an elastic supporting part, the elastic supporting part is connected to the movable part to support the movable part, and one end of the movable part along its radial direction is connected to the fixed part through a damping structure.

2. The optical element yaw actuator with a damping structure according to claim 1, characterized in that: The damping structure comprises a connecting column, an active groove and a first damping member; The side wall of the fixed part is provided with a raised connecting column, and the movable part is provided with a movable groove, and the movable groove is close to one end of the movable part along its radial direction. The number of the movable grooves and the connecting columns is consistent and they are arranged one by one. The opening of the movable groove and the connecting column are arranged opposite to each other, and the end of the connecting column away from the fixed part passes through the opening of the movable groove. A rotation gap is provided between the outer wall of the inserted end of the connecting column and the inner wall of the movable groove for the movable groove to follow the rotation of the movable part, and the outer wall of the inserted end of the connecting column and the inner wall of the movable groove are connected by a first damping member.

3. The optical element yaw actuator with a damping structure according to claim 2, characterized in that: The movable part is provided with a central axis, the axial direction of the central axis is consistent with the axial direction of the movable part, and there are more than two movable grooves, which are distributed circumferentially around the central axis of the movable part.

4. The optical element yaw actuator with a damping structure according to claim 2, characterized in that: The length direction of the connecting column is consistent with the axial direction of the movable part, and one end of the connecting column is inserted into the movable groove.

5. The optical element yaw actuator with a damping structure according to claim 1, characterized in that: The damping structure comprises a movable column, a damping groove and a second damping member; The movable part is provided with a raised movable column along its radial side wall, and the fixed part side wall is provided with a damping groove, the number of the movable columns and the damping grooves are consistent and are arranged one by one, the groove-shaped opening of the damping groove and the movable column are arranged opposite to each other, and the end of the movable column away from the movable part passes through the groove-shaped opening of the damping groove into the damping groove, and a rotation gap is provided between the outer wall of the inserted end of the movable column and the inner wall of the damping groove for the movable column to rotate with the movable part, and the outer wall of the inserted end of the movable column and the inner wall of the damping groove are connected by the second damping member.

6. The optical element yaw actuator with a damping structure according to claim 5, characterized in that: The body length direction of the movable column is consistent with the radial direction of the movable part, and one end of the body length of the movable column penetrates into the damping groove.

7. The optical element yaw actuator with a damping structure according to claim 1, characterized in that: The fixed part includes a base and a shell, and the side walls at opposite ends of the shell are respectively provided with a first opening and a second opening. The end of the shell provided with the first opening is connected to the base, the movable part and the driving device are both located in the shell, the elastic supporting part is located between the base and the movable part, the movable part is connected to the side wall of the shell or the base through a damping structure, and the second opening is arranged opposite to the movable part to allow the light path of the deflected optical element to pass through.

8. The optical element yaw actuator with a damping structure according to claim 7, characterized in that: One end of the shell body having a first opening is detachably connected to the base.

9. An optical device, characterized in that: An optical element yaw driver with a damping structure comprising any one of claims 1-8.

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