An electrically adjustable optical frame

Abstract

The present invention relates to the technical field of optical instruments, and specifically discloses an electrically adjustable optical mirror frame, which includes a lens frame, a fixing plate hinged to the lens frame, an X-axis driving mechanism installed on the lens frame and used to control the rotation of the lens frame along the X-axis direction, and a Y-axis driving mechanism installed on the fixing plate and used to control the rotation of the lens frame along the Y-axis direction. The present invention can effectively overcome the problems of inconvenient driving of inclined lenses, large volume and poor stiffness in the mirror roll direction of the existing electrically adjustable mirror frame.

Description

Technical Field

[0001] The present invention relates to the technical field of optical instruments, and more specifically, to an electrically tunable optical mount. Background Art

[0002] Electrically tunable optical mounts are widely used in optomechanical systems and generally have two-dimensional angle adjustment functions of pitch and azimuth. The optical mounts used in precision optomechanical systems should not only have sensitive and smooth angle adjustment functions, but also have accurate and stable positioning performance after adjustment, and require simple and convenient operation.

[0003] On the market, the mirror surface of a common electrically tunable optical mount is vertically arranged with the mount surface. In some optical systems, there are also some lenses arranged obliquely to the mount surface that require an electrically tunable mechanism to finely adjust the angle of the lens.

[0004] The existing X-axis motor assembly of the electrically tunable mount is usually arranged on the back or bottom surface. When it is required that the center of the mirror surface is close to the mount surface and used obliquely, the X-axis motor assembly arranged on the back is likely to interfere with the bottom mount surface, and a relatively high adapter structure needs to be designed to adapt and install the existing electrically tunable mount, which occupies a large system space and is difficult to be applied in a narrow installation space, and the stability is difficult to guarantee.

[0005] The existing electrically tunable mirrors often adopt a ball hinge structure. This structure has sensitive rotation and is suitable for small-diameter mounts, but has low stiffness in the mirror surface rolling direction. When a large electrically tunable mirror with a ball hinge structure is used in an external vibration environment, the movable frame structure is easily impacted and causes lateral crosstalk, resulting in changes in the position of the lens, and it is difficult to adapt to severe environments with intense vibration and shock such as in vehicles. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide an electrically tunable optical mount that can effectively overcome the problems of inconvenient driving of inclined lenses, large volume, and poor stiffness in the mirror surface rolling direction of the existing electrically tunable mounts.

[0007] The solution adopted by the present invention to solve the technical problem is:

[0008] An electrically tunable optical mount includes a frame, a fixing plate hinged to the frame, an X-axis driving mechanism installed on the frame and used to control the rotation of the frame along the X-axis direction, and a Y-axis driving mechanism installed on the fixing plate and used to control the rotation of the frame along the Y-axis direction.

[0009] The lens is mounted on the frame. When the frame needs to be rotated along the X-axis direction so as to adjust the position with the fixed plate, the X-axis drive device outputs to the side close to the fixed plate, so that the frame rotates along the rotation axis formed by the hinge point and the abutment point of the Y-axis drive device and the frame; when the frame needs to be rotated along the Y-axis direction so as to adjust the position with the fixed plate, the Y-axis drive device outputs to the side close to the fixed plate, so that the frame rotates along the rotation axis formed by the hinge point and the abutment point of the Y-axis drive device and the frame; by controlling the relative position change between the frame and the fixed plate, the relative position change between the lens and the fixed plate is achieved;

[0010] In some possible implementations, in order to effectively realize the rotation of the frame around the same hinge point in the X-axis and Y-axis directions, thereby realizing the adjustment of the frame position;

[0011] A flexible hinge is arranged between the mirror frame and the fixed plate, the connection line between the flexible hinge and the X-axis driving mechanism is arranged along the Y-axis direction, and the connection between the flexible hinge and the Y-axis driving mechanism is arranged along the X-axis direction; the flexible hinge is arranged at the corners of the mirror frame and the fixed plate.

[0012] In some possible implementations, in order to ensure the stability of the frame when rotating;

[0013] The flexible hinge is a cross flexible hinge, comprising a coaxially arranged connecting column 1 and a coaxially arranged connecting column 2, and a coaxially connected flexible rotating part arranged between the connecting column 1 and the connecting column 2.

[0014] In some possible implementations,

[0015] The flexible rotating part includes a connecting plate 1 connected to the connecting column 1 in sequence, a Y-axis rotating shaft arranged along the Y-axis direction in the long direction, a connecting plate 2, an X-axis rotating shaft arranged along the X-axis direction in the long direction, and a connecting plate 3;

[0016] The side of the connection disk 3 away from the X-axis rotation axis is coaxially connected to the connection column 2; the connection column 1 is coaxially connected to the connection disk.

[0017] The flexible rotating part arranged as above can effectively limit the rotational movement of the frame around the X-axis or Y-axis driven by the motor, thereby eliminating the contact deformation fluctuations caused by the spherical hinge in the prior art under a vibration environment and the shaking of the ball in the conical structure caused by the inertia of the frame, thereby effectively avoiding the change of the mirror posture caused by the shaking of the frame in a strong vibration environment.

[0018] In some possible implementations, in order to effectively provide a restoring force when driving the X-axis drive mechanism and the Y-axis drive mechanism;

[0019] An elastic component one that is respectively connected to the spectacle frame and the fixed plate is arranged between the X-axis driving mechanism and the flexible hinge; an elastic component two that is respectively connected to the spectacle frame and the fixed plate is arranged between the Y-axis driving mechanism and the flexible hinge.

[0020] The X-axis driving mechanism, the elastic component one, and the flexible hinge are on the same plane arranged along the Y-axis direction, and the Y-axis driving mechanism, the elastic component two, and the flexible hinge are on the same plane arranged along the X-axis direction.

[0021] In some possible implementation manners,

[0022] The elastic component one includes a first tension spring and Y connecting shafts installed at both ends of the first tension spring and arranged along the Y-axis direction;

[0023] The elastic component two includes a second tension spring and X connecting shafts installed at both ends of the first tension spring and arranged along the X-axis direction;

[0024] Wherein the Y connecting shaft is coaxially arranged with the Y-direction rotating shaft, and the X connecting shaft is coaxially arranged with the X-direction rotating shaft.

[0025] In some possible implementation manners, in order to effectively realize the X-axis driving mechanism to control the spectacle frame to rotate along the X-axis direction, and the Y-axis driving mechanism to control the spectacle frame to rotate along the Y-axis direction;

[0026] The X-axis driving mechanism and the Y-axis driving mechanism have the same structure;

[0027] The X-axis driving mechanism includes an X abutting block installed on the side of the fixed plate close to the spectacle frame, and an X-direction fine-tuning screw rod driving device installed on the spectacle frame and passing through the spectacle frame to abut against the X abutting block.

[0028] In some possible implementation manners,

[0029] The X-direction fine-tuning screw rod driving device includes an X-direction motor, a first adapter sleeve sleeved outside the output shaft of the X-direction motor, a first coupling sleeved inside the first adapter sleeve and connected to the output shaft of the X-direction motor, a first screw rod in transmission connection with the first coupling, a first transmission nut sleeved on the first adapter sleeve and screwed with the first screw rod, and a first ball head installed at the end of the first screw rod away from the first coupling and abutting against the X abutting block; the first transmission nut is fixedly connected to the spectacle frame.

[0030] In some possible implementation manners,

[0031] On one side of the first screw rod close to the first coupling, there is a first screw rod connecting shaft with a T-shaped cross-section structure, and its small end is smoothly connected to the first screw rod; at one end of the first coupling close to the first screw rod, there is a first U-shaped groove for slidably installing the first screw rod connecting shaft; at the opening of the first U-shaped groove, there is a first limiting boss for restricting the first screw rod connecting shaft from sliding out along the long direction of the first screw rod.

[0032] In some possible embodiments, in order to effectively improve the sensitivity when rotating in the X-axis direction and the Y-axis direction, while having good rigidity in other directions

[0033] On one side of the X abutting block close to the first ball head, a first V-shaped groove is provided; the long direction of the first V-shaped groove is arranged along the Y-axis direction, and its axis is coaxial with the Y-axis rotating shaft.

[0034] Compared with the prior art, the beneficial effects of the present invention are:

[0035] Through the cooperation of the X-axis driving mechanism and the Y-axis driving mechanism with the hinge respectively, the present invention effectively enables the spectacle frame to independently rotate in the X-axis direction and the Y-axis direction;

[0036] Through the mutual cooperation of the cross-through flexible hinge with the first V-shaped groove and the second V-shaped groove, compared with using a ball hinge structure to achieve articulation, the present invention effectively limits the rotation direction of the spectacle frame in the X-axis direction or the Y-axis direction, ensuring that good rigidity is still maintained in other directions. Therefore, the overall rigidity of the spectacle frame is better;

[0037] By arranging the X-axis driving device on the side of the spectacle frame away from the fixed plate and arranging the Y-axis driving device on the side of the fixed plate away from the spectacle frame, and at the same time ensuring that the X-axis driving device and the Y-axis driving device are perpendicular to the spectacle frame, interference between the longer motor driver and the installation surface is avoided;

[0038] By arranging the first elastic component and the second elastic component, the contact gap between the first lead screw or the lead screw is effectively eliminated, and a restoring force can be provided;

[0039] By driving the lead screw by a motor to perform a linear motion, the ball head installed at the end of the lead screw approaches or moves away from the abutting block, thereby driving the spectacle frame to rotate around the articulation point; compared with the prior art, the adjustment accuracy of the present invention is higher, and its stroke can meet the use requirements. Brief Description of the Drawings

[0040] Figure 1 is a three-dimensional structure schematic diagram of the present invention;

[0041] Figure 2 is a structure schematic diagram of the flexible hinge in the present invention;

[0042] Figure 3 is a schematic diagram of the positional relationship among the X-axis driving mechanism, the Y-axis driving mechanism, the first elastic component, the second elastic component, the fixed plate, and the support seat in the present invention;

[0043] Figure 4 is a schematic diagram of the positional relationship among the X abutting block, the Y abutting block, the fixed plate, the first elastic component, and the second elastic component in the present invention;

[0044] Figure 5 Structural schematic diagram of the X abutting block in the present invention;

[0045] Figure 6 Structural schematic diagram of the X-axis driving device in the present invention;

[0046] Figure 7 Cross-sectional view of the X-axis driving device in the present invention;

[0047] Figure 8 Schematic diagram of the connection relationship among the ball head, the lead screw, and the coupling in the present invention;

[0048] Wherein: 1, spectacle frame; 2, fixing plate; 3, flexible hinge; 31, first connecting column; 32, first connecting disc; 33, Y-axis rotating shaft; 34, second connecting disc; 35, X-axis rotating shaft; 36, third connecting disc; 37, second connecting column; 4, X-axis driving mechanism; 41, X-axis driving device; 411, X-axis motor; 412, first coupling; 4121, U-shaped groove; 4122, first limiting boss; 413, first adapter sleeve; 414, first lead screw; 4141, first lead screw connecting shaft; 415, first transmission nut; 416, first ball head; 42, X abutting block; 421, first V-shaped groove; 5, Y-axis driving mechanism; 51, Y-axis driving device; 52, Y abutting block; 6, support seat; 7, second elastic component; 71, second tension spring; 72, Y connecting shaft; 8, first elastic component; 81, first tension spring; 82, X connecting shaft. Detailed implementation manners

[0049] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. The "first", "second" and similar terms mentioned in this application do not represent any sequence, quantity or importance, but are only used to distinguish different components. Similarly, terms such as "a" or "one" do not represent a quantity limitation, but indicate that there is at least one. In the implementation of this application, "and / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In the description of the embodiments of this application, unless otherwise stated, the meaning of "a plurality" is two or more. For example, a plurality of positioning columns means two or more positioning columns. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] The present invention will be described in detail below.

[0051] As Figures 1-8 shown:

[0052] An electrically adjustable optical frame includes a frame 1, a fixing plate 2 hinged to the frame 1, an X-axis driving mechanism 4 installed on the frame 1 and used to control the rotation of the frame 1 along the X-axis direction, and a Y-axis driving mechanism 5 installed on the fixing plate 2 and used to control the rotation of the frame 1 along the Y-axis direction.

[0053] The lens is installed on the frame 1. When it is necessary to rotate the frame 1 along the X-axis direction to adjust its position relative to the fixing plate 2, the X-axis driving device 41 outputs towards the side close to the fixing plate 2, so that the frame 1 rotates along the rotation axis formed by the hinge point and the contact point between the Y-axis driving device and the frame 1; when it is necessary to rotate the frame 1 along the Y-axis direction to adjust its position relative to the fixing plate 2, the Y-axis driving device outputs towards the side close to the fixing plate 2, so that the frame 1 rotates along the rotation axis formed by the hinge point and the contact point between the Y-axis driving device and the frame 1; by controlling the relative position change between the frame 1 and the fixing plate 2, the relative position change between the lens and the fixing plate 2 is realized.

[0054] In some possible implementation manners, in order to effectively realize the rotation of the frame 1 around the same hinge point in the X-axis and Y-axis directions, so as to realize the adjustment of the position of the frame 1;

[0055] A flexible hinge 3 is arranged between the frame 1 and the fixing plate 2. The connection line between the flexible hinge 3 and the X-axis driving mechanism 4 is arranged along the Y-axis direction, and the connection between the flexible hinge 3 and the Y-axis driving mechanism 5 is arranged along the X-axis direction; the flexible hinge 3 is arranged at the corner of the frame 1 and the fixing plate 2.

[0056] In some possible implementation manners, in order to ensure the stability of the frame 1 during rotation;

[0057] The flexible hinge 3 is a cross flexible hinge 3, which includes a connecting column one 31 and a connecting column two 37 arranged coaxially, and a flexible rotating part arranged between the connecting column one 31 and the connecting column two 37 and connected coaxially.

[0058] Wherein the connecting column one 31 is connected to the frame 1 by bolts, and the connecting column two 37 is connected to the fixing plate 2 by bolts.

[0059] In some possible implementation manners,

[0060] The flexible rotating part includes a connecting disk one 32 connected to the connecting column one 31 in sequence, a Y-axis rotating shaft 33 with a long direction arranged along the Y-axis direction, a connecting disk two 34, an X-axis rotating shaft 35 with a long direction arranged along the X-axis direction, and a connecting disk three 36;

[0061] One side of the connecting plate three 36 away from the X-axis rotating shaft 35 is coaxially connected with the connecting column two 37; the connecting column one 31 is coaxially connected with the connecting plate one 32.

[0062] As Figure 2 shown, the connecting column one 31 and the connecting column two 37 are coaxially arranged and located on both sides of the flexible rotating part; the connecting column one 31, the connecting plate one 32, the Y-axis rotating shaft 33, the connecting plate two 34, the X-axis rotating shaft 35, the connecting plate three 36, and the connecting column two 37 are connected in sequence, wherein the connecting column one 31 is connected with the mirror frame 1, the connecting column two 37 is connected with the fixing plate 2, and the flexible rotating part formed by the connecting plate one 32, the Y-axis rotating shaft 33, the connecting plate two 34, the X-axis rotating shaft 35, and the connecting plate three 36 is located between the mirror frame 1 and the fixing plate 2; the X-axis rotating shaft is orthogonally arranged with the Y-axis rotating shaft 33; and two slots with the same structure are respectively formed between the connecting plate one 32 and the connecting plate two 34, and between the connecting plate two 34 and the connecting plate three 36.

[0063] When the X-axis driving device 41 needs to drive the mirror frame 1 to rotate along the X-axis direction, the X-axis rotating shaft 35 will be used as the rotating shaft, ensuring that the rotation adjustment in the X-axis direction can be realized while having little coupling influence on the Y-axis rotating shaft 33.

[0064] The flexible rotating part set as above will effectively limit the rotational movement of the mirror frame 1 around the X-axis or Y-axis, eliminating the contact deformation fluctuation generated by the spherical hinge in the vibration environment and the shaking of the ball in the conical structure caused by the inertia of the mirror frame in the prior art, thereby effectively avoiding the change of the mirror surface attitude caused by the shaking of the mirror frame in a strong vibration environment.

[0065] In some possible implementation manners, in order to effectively provide a restoring force when the X-axis driving mechanism 4 and the Y-axis driving mechanism 5 are driving;

[0066] An elastic component one 8 respectively connected with the mirror frame 1 and the fixing plate 2 is arranged between the X-axis driving mechanism 4 and the flexible hinge 3; an elastic component two 7 respectively connected with the mirror frame 1 and the fixing plate 2 is arranged between the Y-axis driving mechanism 5 and the flexible hinge 3;

[0067] The X-axis driving mechanism 4, the elastic component one 8, and the flexible hinge 3 are on the same plane arranged along the Y-axis direction, and the Y-axis driving mechanism 5, the elastic component two 7, and the flexible hinge 3 are on the same plane arranged along the X-axis direction.

[0068] In some possible implementation manners,

[0069] The elastic component one 8 includes a tension spring one 81 and Y-connecting shafts 72 installed at both ends of the tension spring one 81 and arranged along the Y-axis direction;

[0070] The second elastic component 7 includes a second tension spring 71, and an X connecting shaft 82 installed at both ends of the first tension spring 81 and arranged along the X-axis direction;

[0071] Wherein the Y connecting shaft 72 is coaxially arranged with the Y-axis rotating shaft 33, and the X connecting shaft 82 is coaxially arranged with the X-axis rotating shaft 35.

[0072] Preferably, mounting grooves for mounting the Y connecting shaft 72 and the X connecting shaft 82 are respectively provided on the spectacle frame 1 and the fixed plate 2;

[0073] On the one hand, the X connecting shaft 82 and the Y connecting shaft 72 effectively realize the installation of the first tension spring 81 and the second tension spring 71. On the other hand, since the Y connecting shaft 72 is coaxially arranged with the Y-axis rotating shaft 33 and the X connecting shaft 82 is coaxially arranged with the X-axis rotating shaft 35, further guiding for the rotation direction is achieved.

[0074] Furthermore, both the Y connecting shaft 72 and the X connecting shaft 82 are in two groups;

[0075] In some possible implementation manners, in order to effectively realize that the X-axis driving mechanism 4 controls the spectacle frame 1 to rotate along the X-axis direction, and the Y-axis driving mechanism 5 controls the spectacle frame 1 to rotate along the Y-axis direction;

[0076] The X-axis driving mechanism 4 and the Y-axis driving mechanism 5 have the same structure;

[0077] The X-axis driving mechanism 4 includes an X abutting block 42 installed on the side of the fixed plate 2 close to the spectacle frame 1, and an X-direction fine-tuning screw rod driving device installed on the spectacle frame 1 and passing through the spectacle frame 1 to abut against the X abutting block 42.

[0078] Specifically, the Y-axis driving mechanism 5 includes a Y abutting block 52 installed on the side of the spectacle frame 1 close to the fixed block, and a Y-direction fine-tuning screw rod driving device installed on the fixed plate 2 and passing through the fixed plate 2 to abut against the Y abutting block 52.

[0079] In some possible implementation manners,

[0080] The X-direction fine-tuning screw rod driving device includes an X-direction motor 411, a first adapter sleeve 413 sleeved outside the output shaft of the X-direction motor 411, a first coupling 412 sleeved inside the first adapter sleeve 413 and connected to the output shaft of the X-direction motor 411, a first screw rod 414 in transmission connection with the first coupling 412, a first transmission nut 415 fixedly connected to the first adapter sleeve 413 and screwed with the first screw rod 414, and a first ball head 416 installed at one end of the first screw rod 414 far from the first coupling 412 and abutting against the X abutting block 42; the first transmission nut 415 is fixedly connected to the spectacle frame 1.

[0081] The Y-direction fine-tuning screw drive device includes a Y-direction motor, a second adapter sleeve sleeved outside the output shaft of the Y-direction motor, a second coupling sleeved inside the second adapter sleeve and connected to the output shaft of the Y-direction motor, a second screw rod drivingly connected to the second coupling, a second driving nut fixedly connected to the second adapter sleeve and screwed with the second screw rod, and a second ball head installed at one end of the second screw rod away from the second coupling and abutting against the Y abutting block 52; the second driving nut is fixedly connected to the fixed plate 2.

[0082] Preferably, a first locking nut is provided at one end of the first driving nut 415 close to the first ball head 416, and a second locking nut is provided at one end of the second driving nut close to the second ball head. The first locking nut locks and positions the first driving nut 415 and the spectacle frame 1; the second locking nut locks and positions the second driving nut and the fixed plate 2;

[0083] The overall structure of the present invention is designed in a Z-shaped layout. The two motor drivers are vertically arranged in a staggered manner front and back on the mirror surface, avoiding interference between the relatively long motor drivers and the installation surface.

[0084] Preferably, the X-direction motor 411 and the Y-direction motor are both servo motors; the first screw rod 414 and the second screw rod are arranged perpendicular to each other along the Z-axis direction and are perpendicular to the spectacle frame 1 and the fixed plate 2. The first screw rod 414 and the second screw rod are precision fine-tuning screw rods.

[0085] It should be noted that during use, the rotational motion of the servo motor is transformed into the linear motion of the precision fine-tuning screw rod. The pitch of the precision fine-tuning screw rod is not greater than 0.25 mm. When the servo motor drives the precision fine-tuning screw rod to rotate one circle, the distance that the precision fine-tuning screw rod moves is the pitch size. The servo collects position signals through a high-precision incremental encoder for closed-loop control, achieving a resolution of dozens of nanometers for the movement of the precision fine-tuning screw rod per pulse, thereby effectively improving the adjustment accuracy.

[0086] In some possible implementation manners,

[0087] On one side of the first screw rod 414 close to the first coupling 412, there is a first screw rod connecting shaft 4141 with a T-shaped cross-section, and its small end is smoothly transitionally connected to the first screw rod 414; at one end of the first coupling 412 close to the first screw rod 414, there is a U-shaped groove 4121 for slidably installing the first screw rod connecting shaft 4141; at the opening of the U-shaped groove 4121, there is a first limiting boss 4122 for restricting the first screw rod connecting shaft 4141 from sliding out along the length direction of the first screw rod 414.

[0088] Specifically, on one side of the second screw rod close to the second coupling, there is a second screw rod connecting shaft with a T-shaped cross-section, and its small end is connected to the second screw rod; at one end of the second coupling close to the second screw rod, there is a U-shaped groove for slidably installing the second screw rod connecting shaft; at the opening of the U-shaped groove, there is a second limiting boss for restricting the second screw rod connecting shaft from sliding out along the length direction of the second screw rod.

[0089] Preferably, the first lead screw connecting shaft 4141 has a flat structure and extends into the first U-shaped groove 4121 to slidably cooperate with the first U-shaped groove 4121; the second lead screw connecting shaft also has a flat structure and extends into the second U-shaped groove to slidably cooperate with the second U-shaped groove;

[0090] Preferably, the first lead screw connecting shaft 4141 includes a connecting portion that is smoothly and transitionally connected to one end of the first lead screw 414 and is flat, and a limiting portion located in the first U-shaped groove 4121; wherein the connecting portion passes through the first limiting boss 4122 and is connected to the limiting portion in the first U-shaped groove 4121; further, the cross-sectional dimension of the connecting portion is smaller than the cross-section of the first lead screw 414; the cross-section of the connecting portion in the Z-axis direction can be a polygonal structure, such as a triangle, a quadrilateral, a pentagon, etc.; the cross-section of the connecting portion cannot be in the Z-axis direction; the purpose of such a setting is that when the coupling 412 rotates, it can effectively drive the rotation of the connecting portion, thereby realizing the rotation of the first lead screw 414. Since the first lead screw 414 is screwed with the first transmission nut 415, and the first transmission nut 415 is fixedly connected to the lens frame through a locking nut, the first lead screw 414 makes a linear motion along its longitudinal direction;

[0091] It should be noted that the first ball head 416 is a smooth spherical surface, and the connecting portion is in a smooth transition fit with the first lead screw 414 with a smaller inner and larger outer diameter; when the first ball head 416 moves along the longitudinal direction of the first lead screw 414 towards the side close to the fixed plate 2; the smooth transition fit of the connecting portion with the first lead screw 414 with a smaller inner and larger outer diameter forms a circular uphill ramp, and it can quickly reach the limit position and stop; when the first ball head 416 moves back along the longitudinal direction of the first lead screw 414 towards the side of the X-axis motor 411, the smooth transition fit of the connecting portion with the first lead screw 414 with a smaller inner and larger outer diameter forms a circular downhill ramp, so that the X-axis motor 411 can withdraw from the limit position with only a small driving torque and is not easily jammed. The Y-axis fine-tuning lead screw driving device is the same in principle and will not be elaborated here.

[0092] In some possible implementation manners, in order to effectively improve the sensitivity when rotating in the X-axis direction and the Y-axis direction, and at the same time have good rigidity in other directions;

[0093] The first adapter sleeve 413 is fixedly connected to the X-axis motor 411, the second adapter sleeve is fixedly connected to the Y-axis motor, a first U-shaped groove 4121 is provided at one end of the first coupling close to the first ball head 416, a second U-shaped groove is provided on the side of the second coupling close to the second ball head, the first lead screw connecting shaft 4141 and the second lead screw connecting shaft are designed in a T-shaped structure and are flat, and are fitted and embedded in the first U-shaped groove 4121 or the second U-shaped groove. With this setting, the stroke is relatively large, and the typical lead screw stroke can reach 8 mm, meeting the optical adjustment requirements of most cases.

[0094] On one side of the X abutting block 42 close to the first ball head 416, a first V-shaped groove 421 is provided; the long direction of the first V-shaped groove 421 is arranged along the Y-axis direction, and its axis is coaxial with the Y-direction rotating shaft 33.

[0095] On one side of the Y abutting block 52 close to the second ball head, a second V-shaped groove is provided; the long direction of the second V-shaped groove is arranged along the X-axis direction, and its axis is coaxial with the X-direction rotating shaft 35.

[0096] Specifically, the X abutting block 42 or the Y abutting block 52 adopts a two-end semi-circular long strip structure, the first V-shaped groove 421 or the second V-shaped groove penetrates through the semi-circular long strip structure, the bottom is in arc transition, and the groove surface is polished and finely processed.

[0097] It should be noted that:

[0098] When rotating in the X-axis direction, the X-direction motor 411 drives the rotation, so that the first coupling 412 rotates, thereby enabling the first lead screw connecting shaft 4141 slidably installed in the first U-shaped groove 4121 to slide along the long direction of the first lead screw 414, so that the first ball head 416 moves towards the side close to the X abutting block 42; at this time, since the axis of the X-direction rotating shaft 35 is coaxial with the axis of the second V-shaped groove, the spectacle frame 1 will rotate around the rotation axis formed by the X-direction rotating shaft 35 and the second V-shaped groove. During the rotation along the X-axis direction, since the first elastic component 8 is provided, the contact gap between the first lead screw 414 and the transmission nut can be effectively eliminated, and the elastic force generated by the elastic component is only transmitted to the thread of the first lead screw 414; setting the elastic component can also provide a restoring force for the spectacle frame 1 and the fixing plate 2; when adjusting around the X-direction rotating shaft 35, since the X-direction rotating shaft 35 and the Y-direction rotating shaft 33 are orthogonally arranged, the influence on the Y-direction rotating shaft 33 coupling will be small.

[0099] Similarly, when rotating in the Y-axis direction, the principle is the same as that when rotating in the X-axis direction, and details will not be described here.

[0100] The present invention adopts the cooperation of the flexible hinge 3, the V-shaped groove (the first V-shaped groove 421 or the second V-shaped groove), and the lead screw structure, so that the possibility of lateral crosstalk of the spectacle frame in the vibration environment is extremely small, and it is more suitable for large-aperture electrically adjustable optical mirror frames that are more sensitive to vibration.

[0101] Preferably, a square hole is provided on the first adapter sleeve 413, so as to realize manually rotating the first coupling 412 to drive the first lead screw 414 to rotate and realize the manual adjustment function; a square hole is also provided on the second adapter sleeve, so as to realize manually rotating the second coupling to drive the second lead screw to rotate and realize the manual adjustment function.

[0102] Preferably, lens mounting holes are provided on the spectacle frame 1, and the mounting holes can be of various shapes, such as round holes, square holes, special-shaped holes, etc.

[0103] Preferably, the present invention further includes a support base 6 for mounting the fixed plate 2, and the support base 6 is provided with an inclined surface for mounting the fixed plate 2; motor controllers are respectively arranged on both sides of the support base 6, so as to realize the adjustment of two-dimensional angles of pitch and azimuth; further, the included angle between the inclined surface and the horizontal plane is 45°, the fixed plate 2 is mounted on the inclined surface, and the mirror frame 1 is mounted on the fixed plate 2, so that the upper reflecting surface and the lower reflecting surface of the lens mounted on the mirror frame form an included angle of 45° with the horizontal plane, so that there is no structural obstruction in the 45-degree incident and outgoing directions, which is very suitable for the 90-degree turning and dimming application of the light beam.

[0104] The present invention is not limited to the foregoing specific embodiments. The present invention extends to any new feature or any new combination disclosed in this specification, as well as any new combination of steps of any new method or process disclosed.

Claims

1. An electrically adjustable optical frame, characterized in that, It includes a spectacle frame, a fixing plate hinged to the spectacle frame, an X-axis driving mechanism installed on the spectacle frame and used to control the rotation of the spectacle frame along the X-axis direction, and a Y-axis driving mechanism installed on the fixing plate and used to control the rotation of the spectacle frame along the Y-axis direction; a flexible hinge is arranged between the spectacle frame and the fixing plate, the connection line between the flexible hinge and the X-axis driving mechanism is arranged along the Y-axis direction, and the connection between the flexible hinge and the Y-axis driving mechanism is arranged along the X-axis direction; the flexible hinge is arranged at the corner of the spectacle frame and the fixing plate; the flexible hinge is a cross flexible hinge, which includes a connecting column one and a connecting column two arranged coaxially, and a flexible rotating part arranged between the connecting column one and the connecting column two and connected coaxially. The X-axis driving mechanism and the Y-axis driving mechanism have the same structure; the X-axis driving mechanism includes an X abutting block installed on the side of the fixing plate close to the spectacle frame, and an X-direction fine adjustment screw rod driving device installed on the spectacle frame and passing through the spectacle frame to abut against the X abutting block; the Y-axis driving mechanism includes a Y abutting block installed on the side of the spectacle frame close to the fixed block, and a Y-direction fine adjustment screw rod driving device installed on the fixing plate and passing through the fixing plate to abut against the Y abutting block. The X-direction fine adjustment screw rod driving device includes an X-direction motor, a transfer sleeve one sleeved outside the output shaft of the X-direction motor, a coupling one sleeved inside the transfer sleeve one and connected to the output shaft of the X-direction motor, a screw rod one in transmission connection with the coupling one, a transmission nut one fixedly connected to the transfer sleeve one and screwed with the screw rod one, and a ball head one installed at the end of the screw rod one far from the coupling one and abutting against the X abutting block. The Y-direction fine adjustment screw rod driving device includes a Y-direction motor, a transfer sleeve two sleeved outside the output shaft of the Y-direction motor, a coupling two sleeved inside the transfer sleeve two and connected to the output shaft of the Y-direction motor, a screw rod two in transmission connection with the coupling two, a transmission nut two fixedly connected to the transfer sleeve two and screwed with the screw rod two, and a ball head two installed at the end of the screw rod two far from the coupling two and abutting against the Y abutting block; the transmission nut two is fixedly connected to the fixing plate. A V-shaped groove one is arranged on the side of the X abutting block close to the ball head one; a V-shaped groove two is arranged on the side of the Y abutting block close to the ball head two. The transmission nut one is fixedly connected to the spectacle frame; a screw rod connecting shaft one with a T-shaped cross-section structure is arranged on the side of the screw rod one close to the coupling one, and its small end is smoothly transitionally connected to the screw rod one; a U-shaped groove one for slidably installing the screw rod connecting shaft one is arranged at one end of the coupling one close to the screw rod one; a limiting boss one for restricting the screw rod connecting shaft one from sliding out along the long direction of the screw rod one is arranged at the opening of the U-shaped groove one.

2. The electro-optical spectacle frame according to claim 1, characterized in that The flexible rotating part includes a connecting disk one connected to the connecting column one in sequence, a Y-direction rotating shaft with a long direction along the Y-axis direction, a connecting disk two, an X-direction rotating shaft with a long direction along the X-axis direction, and a connecting disk three. One side of the connecting disk three far from the X-direction rotating shaft is coaxially connected to the connecting column two; the connecting column one is coaxially connected to the connecting disk one.

3. The electro-optical spectacle frame according to claim 2, wherein, An elastic component one respectively connected to the spectacle frame and the fixing plate is arranged between the X-axis driving mechanism and the flexible hinge; an elastic component two respectively connected to the spectacle frame and the fixing plate is arranged between the Y-axis driving mechanism and the flexible hinge. The X-axis driving mechanism, the first elastic component, and the flexible hinge are on the same plane arranged in the Y-axis direction, and the Y-axis driving mechanism, the second elastic component, and the flexible hinge are on the same plane arranged in the X-axis direction.

4. The electro-optical spectacle frame according to claim 3, characterized in that, The first elastic component includes a first tension spring and Y connecting shafts installed at both ends of the first tension spring and arranged in the Y-axis direction; The second elastic component includes a second tension spring and X connecting shafts installed at both ends of the first tension spring and arranged in the X-axis direction; Wherein the Y connecting shaft is coaxially arranged with the Y-direction rotating shaft, and the X connecting shaft is coaxially arranged with the X-direction rotating shaft.

5. The electro-optical spectacle frame according to claim 2, characterized in that, The long direction of the first V-shaped groove is arranged in the Y-axis direction, and its axis is coaxial with the Y-direction rotating shaft.

Images