CN-111665603-B - Optical machine regulating mechanism for realizing motion isolation by using thin sheet

Abstract

The invention provides an adjusting mechanism for realizing motion isolation by using a sheet, which comprises a base part serving as a position reference and an adjusting part used for bearing an optical component and having adjustable position. The sheet material is easy to bend and deform in the thickness direction, and can bear large moment in the width and length directions, so that the sheet material is not easy to deform. The invention uses the mechanical property, uses the deformation of the thin sheet in the thickness direction to adapt to the adjusting direction of the optical component, and uses the difficult deformation of the width and length directions to isolate the movement in the non-adjusting direction. Opposite ends of the sheet are respectively fixed with the base part and the adjusting part, the bending deformation of the thickness direction of the sheet is adapted to the movement of the adjusting part in the adjusting direction, and the lateral movement and the deflection of the adjusting part are limited in the width direction. According to the difference of the structure and the relative movement of the base part and the adjusting part, the adjusting mechanism has three different structures, namely an adjusting mechanism of an arc swinging table structure, an adjusting mechanism of a horizontal moving structure and an adjusting mechanism of a turntable structure.

Inventors

• JIN XINGANG

Assignees

• 嘉兴旭锐电子科技有限公司

Dates

Publication Date

20260512

Application Date

20200703

Claims (16)

1. 1. An optical machine adjusting mechanism for realizing motion isolation by using a sheet comprises a base part serving as a position reference and an adjusting part used for bearing an optical component and having an adjustable position, wherein two opposite ends of the sheet are respectively fixed with the base part and the adjusting part, the bending deformation of the thickness direction of the sheet is suitable for the motion of the adjusting part in the adjusting direction, and the lateral movement and deflection of the adjusting part are limited in the width direction; the adjusting mechanism is of an arc swing table structure and comprises a base part (11) and an adjusting part (12) connected with the base part by a swing shaft (13), an adjusting piece (15) is arranged between the free ends of the base part (11) and the adjusting part (12) to adjust relative swing, one end or two ends of the swing shaft (13) parallel to the arc swing table are provided with thin sheets (14, 14 '), the thin sheets (14, 14') are parallel to the swing shaft (13), and two ends of the thin sheets are fixedly connected with the base part (11) and the adjusting part (12) respectively.
2. 2. An optical machine adjusting mechanism for realizing motion isolation by using thin plates according to claim 1, wherein the fixed connection part of the thin plates (14, 14 ') and the base part (11) is arranged on the end face or the bottom face or the inner side surface of the base part (11), and the fixed connection part of the thin plates (14, 14') and the adjusting part (12) is arranged on the end face or the upper surface or the inner side surface of the adjusting part (12).
3. 3. An optical machine adjusting mechanism for realizing motion isolation by using thin sheets according to claim 2, wherein the thin sheets (14) are arranged on the inner side of the arc swinging table and are fixedly connected with the inner surfaces of the base part (11) and the adjusting part (12) respectively in parallel to the swinging axis.
4. 4. An optical machine adjusting mechanism for realizing motion isolation by using a sheet comprises a base part serving as a position reference and an adjusting part used for bearing an optical component and having an adjustable position, wherein two opposite ends of the sheet are respectively fixed with the base part and the adjusting part, the bending deformation of the thickness direction of the sheet is suitable for the motion of the adjusting part in the adjusting direction, and the lateral movement and deflection of the adjusting part are limited in the width direction; the adjusting mechanism is of an arc swing table structure and comprises a base part (11) and an adjusting part (12), the sheet is a reed (141), two ends of the reed (141) are respectively fixed with the base part (11) and the adjusting part (12), the fixed positions can be respectively arranged on the outer surface or the inner surface or the end surface of the base part (11) and the adjusting part (12), and an adjusting piece (15) is arranged between the free ends of the base part (11) and the adjusting part (12) to adjust the relative swing of the adjusting piece.
5. 5. An optical machine adjusting mechanism for realizing motion isolation by utilizing thin plates according to claim 4, wherein said reed (141) is fixed with the end face of the base part (11) and the lower surface of the adjusting part (12), respectively, the inner surface of the bent part of the reed (141) is contacted with an arc surface provided by a round bar (17) or integrated with the base part.
6. 6. An optical machine adjustment mechanism for motion isolation using a sheet according to claim 5, wherein a sheet (14') is fixedly connected to the base portion (11) and the adjustment portion (12) in parallel to the distal end of said reed (141).
7. 7. The optical machine adjusting mechanism for realizing motion isolation by utilizing the thin sheet according to claim 5, wherein a mounting frame (18) is fixed at the end part of the base part (11), and 1 to 2 spring thimbles (19) are mounted on the mounting frame (18) to prop against the end surface of the adjusting part (12) so as to apply a pushing force in the horizontal direction.
8. 8. The optical machine adjusting mechanism for realizing motion isolation by utilizing thin slices as claimed in claim 4, wherein the base part (11), the adjusting part (12) and the reed (141) are of an integrated structure, namely, three parts are of a '匚' shape integrally, and transverse thin slices are processed at the upper and lower connecting parts to serve as the reed (141).
9. 9. An optical machine adjusting mechanism for realizing motion isolation by using a sheet comprises a base part serving as a position reference and an adjusting part used for bearing an optical component and having an adjustable position, wherein two opposite ends of the sheet are respectively fixed with the base part and the adjusting part, the bending deformation of the thickness direction of the sheet is suitable for the motion of the adjusting part in the adjusting direction, and the lateral movement and deflection of the adjusting part are limited in the width direction; the adjusting mechanism is a two-dimensional angle adjusting arc swinging table and comprises a base part (11) and an adjusting part (12), wherein a ball (13 ') is arranged at one corner between the base part (11) and the adjusting part (12) and is supported, a set of adjusting pieces (15) are respectively arranged in two mutually perpendicular directions through the ball (13 '), arc swinging adjustment can be carried out on the adjusting part (12) around the ball (13 ') in the two mutually perpendicular swinging axis directions, pre-bent thin sheets (14) are respectively fixed in parallel to the two swinging axes, and the thin sheets (14) are arranged at one end close to the swinging axis or one end far away from the swinging axis or two ends of the thin sheets (14) are respectively arranged.
10. 10. The optical machine regulating mechanism utilizing thin sheet to implement motion isolation includes base portion as position reference and regulating portion for bearing optical component and regulating portion with adjustable position, and the thin sheet is characterized by that two opposite ends of thin sheet are respectively fixed with base portion and regulating portion, and the bending deformation of thin sheet thickness direction is applicable to the movement of regulating portion in the regulating direction, and the width direction can limit the side movement and deflection of regulating portion, and is characterized by that the regulating mechanism is a regulating mechanism with horizontal movement structure, and includes base portion (21) and regulating portion (22), and an regulating member (23) at one end can push and pull regulating portion (22) on the base portion (21) to horizontally move, and the middle portion of far-end thin sheet (24) is pre-bent, and two ends are respectively fixed with lower surface or end face of base portion (21) and upper surface or end face of regulating portion (22) in the moving direction.
11. 11. An optomechanical adjustment mechanism utilizing lamellae for motion isolation as set forth in claim 10 characterized in that a proximal lamella (25) is also fixed to the base part (21) and the adjustment part (22) at one end of said adjustment member (23).
12. 12. The optical machine adjusting mechanism for realizing motion isolation by using the thin sheet comprises a base part serving as a position reference and an adjusting part used for bearing optical components and being adjustable in position, wherein two opposite ends of the thin sheet are respectively fixed with the base part and the adjusting part, bending deformation of the thin sheet in the thickness direction is suitable for motion of the adjusting part in the adjusting direction, and lateral movement and deflection of the adjusting part are limited in the width direction.
13. 13. An optical machine adjusting mechanism for realizing motion isolation by utilizing thin plates according to claim 12, wherein a round table (311) is arranged on the chassis (31), a rotating shaft (33) is arranged at the center of the upper part of the round table (311), a containing cavity (321) of the rotary table (32) is cylindrical and coaxial with the round table (311) and larger than the diameter of the round table, a bearing (35) is arranged between the round table (311) and the side wall of the containing cavity (321), an inner ring (351) of the bearing (35) is fixed with the side wall of the round table (311), an outer ring (352) is fixed with the side wall of the containing cavity (321), and a group of radially distributed reeds (34) perpendicular to the rotating surface are arranged at the upper part of the containing cavity (321), the proximal ends (341) of the reeds are directly or indirectly fixed with the rotating shaft (33), and the distal ends of the reeds are directly or indirectly fixed with the side wall of the containing cavity (321).
14. 14. An optical machine adjusting mechanism for realizing motion isolation by using a thin sheet according to claim 12 or 13, wherein the group of reeds is a reed spoke wheel (36) structure, which is formed by a group of reeds (34) which are radially distributed and perpendicular to a rotating surface, the proximal end (341) of the reeds is fixed with a spoke wheel inner ring (361), the distal end of the reeds is fixed with a spoke wheel outer ring (362), the reeds spoke wheel (36) is connected with a chassis (31) and a turntable (32), the spoke wheel inner ring (361) is fixed with a rotating shaft (33), and the spoke wheel outer ring (362) is fixed with the side wall of a containing cavity (321).
15. 15. A light machine adjusting mechanism for realizing motion isolation by using a sheet comprises a base part serving as a position reference and an adjusting part used for bearing an optical component and having an adjustable position, wherein two opposite ends of the sheet are respectively fixed with the base part and the adjusting part, bending deformation of the sheet in the thickness direction is suitable for the motion of the adjusting part in the adjusting direction, and the lateral movement and deflection of the adjusting part are limited in the width direction.
16. 16. The optical machine adjusting mechanism for realizing motion isolation by utilizing the thin sheet according to claim 15, wherein the middle part of the chassis (31) is a chassis through hole (312).

Description

Optical machine regulating mechanism for realizing motion isolation by using thin sheet Technical Field The invention belongs to the technical field of optics, and relates to an adjusting mechanism for the position of an optical component in an optical-mechanical system. And more particularly to an adjustment mechanism that uses a sheet to eliminate motion errors in non-adjustment directions. Background In opto-mechanical systems, the position of the optical component needs to be adjusted, which is often very precise. Due to assembly errors between components of the opto-mechanical system, undesired movements may occur in non-adjustment directions during adjustment. For example, the adjustment of the arcuate pendulum is required to oscillate between the two components, but due to assembly errors in the spindle, the two components may experience misalignment and twisting. In many cases, the error in this non-adjustment direction is not negligible and should be eliminated. The current methods of eliminating such errors are not to improve assembly accuracy or to add other high accuracy structures. Both methods have high technical requirements and also result in high economic costs. Aiming at the defects of the prior art, the invention provides the adjusting mechanism which has a simple structure and low cost and realizes motion isolation by using the thin sheet. Disclosure of Invention In mechanics, the sheet material is easy to bend and deform in the thickness direction, and can bear larger moment in the width and length directions, so that the sheet material is not easy to deform. The invention uses the mechanical property, uses the deformation of the thin sheet in the thickness direction to adapt to the adjusting direction of the optical component, and uses the difficult deformation of the width and length directions to isolate the movement in the non-adjusting direction. Therefore, the sheet material used in the invention is required to be not too soft and have certain rigidity, can be bent and deformed but is not easy to crack, and is limited by the deformation scale of the material, and the adjusting mechanism is particularly suitable for small-amplitude adjustment, and the specific technical contents are as follows: The adjusting mechanism comprises a base part serving as a position reference and an adjusting part used for bearing an optical component and having adjustable position. Of course, the division of the two parts is only relative, so the description of the two parts is fully interchangeable in the present invention. Opposite ends of the sheet are respectively fixed with the base part and the adjusting part, the bending deformation of the thickness direction of the sheet is adapted to the movement of the adjusting part in the adjusting direction, and the lateral movement and the deflection of the adjusting part are limited in the width direction. The adjusting mechanism of the present invention may have different structures depending on the structure and relative movement of the base portion and the adjusting portion. The structure comprises the following three structures: Adjusting mechanism of arc swing table structure The existing arc swing table comprises a base part and an adjusting part which are connected by a side shaft to form an arc swing table structure. The adjusting part makes arc swinging motion relative to the base part through the adjusting part, and the included angle between the adjusting part and the base part is adjusted. Due to tolerances of the shaft connection, such as axial and radial assembly clearances, horizontal movements and oscillations between the base part and the adjustment part occur. In the invention, the opposite ends of the thin sheet are respectively fixed with the base part and the adjusting part in a direction parallel to the swinging axis, and any mechanical fixing mode can be adopted for the fixing mode. The thin sheet can be arranged at one end close to the swinging shaft, one end far away from the swinging shaft and one thin sheet at each end, and the distance between the far-end base part and the adjusting part can be changed during adjustment, so that the thin sheet at the end needs to be pre-bent to adapt to the change of the distance. The bending deformation of the thin sheet in the thickness direction can adapt to the arc swinging motion of the adjusting mechanism, and meanwhile, the horizontal movement and swinging of the adjusting part relative to the fixing part are limited and isolated because the thin sheet is not easy to deform in the width direction (namely, the swinging axis direction parallel to the arc swinging table). Further, the fixing position of the sheet may be an upper surface and a lower surface on the outer side of the arcuate table, or an upper surface and a lower surface opposite to each other on the inner side, or may be an end surface parallel to the swing axis, or may be an outer plane or an end surface of the base portion