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CN-224203515-U - Beam adjusting mechanism

CN224203515UCN 224203515 UCN224203515 UCN 224203515UCN-224203515-U

Abstract

The utility model discloses a light beam adjusting mechanism which comprises a first parallel flat plate and a second parallel flat plate, wherein a light beam passes through the first parallel flat plate and the second parallel flat plate, the light beam adjusting mechanism further comprises a first rotary table and a second rotary table, the rotation axes of the first rotary table and the second rotary table are axes, the first parallel flat plate and the second parallel flat plate are obliquely arranged relative to the axes, the first parallel flat plate is linked with the first rotary table, and the second parallel flat plate is linked with the second rotary table.

Inventors

  • LIN XINPENG
  • Mo kun
  • JIN XINGANG

Assignees

  • 嘉兴旭锐电子科技有限公司

Dates

Publication Date
20260505
Application Date
20250606

Claims (10)

  1. 1. A light beam adjusting mechanism comprises a first parallel flat plate (41) and a second parallel flat plate (42) for a light beam to pass through, and is characterized in that: The light beam adjusting mechanism further comprises a first rotary table (11) and a second rotary table (12), the rotation axes of the first rotary table (11) and the second rotary table (12) are axes (X), the first parallel flat plate (41) and the second parallel flat plate (42) are obliquely arranged relative to the axes (X), the first parallel flat plate (41) is linked with the first rotary table (11), and the second parallel flat plate (42) is linked with the second rotary table (12).
  2. 2. The light beam adjustment mechanism according to claim 1, wherein the axis (X) coincides with or is parallel to the direction of incidence of the light beam.
  3. 3. The light beam adjusting mechanism according to claim 1, wherein the first turntable (11) is indirectly fixed to or released from the second turntable (12), so that the first turntable (11) can be rotated in synchronization with the second turntable (12) or independently rotated with respect to the second turntable (12).
  4. 4. The light beam adjusting mechanism according to claim 3, wherein the light beam adjusting mechanism further comprises a first rotating disc center shaft (21) and a first carrier (31), the first parallel flat plate (41) is fixed on the first carrier (31), the first rotating disc (11) and the first carrier (31) are clamped and synchronously rotate from two axial sides of the first rotating disc center shaft (21), and the first rotating disc (11) can be fixed or unfixed with the first rotating disc center shaft (21); The light beam adjusting mechanism further comprises a second turntable central shaft (22) and a second carrier (32), the second parallel flat plate (42) is fixed on the second carrier (32), and the second turntable (12) and the second carrier (32) are clamped from the two axial sides of the second turntable central shaft (22) and synchronously rotate.
  5. 5. The beam adjustment mechanism as set forth in claim 4, wherein said second turntable (12) is secured to said second carrier (32) by a first screw (121) extending axially through said second turntable central axis (22); The first rotating disc (11) and the first carrier (31) are in threaded connection for locking, or the first rotating disc (11) is axially penetrated through the first rotating disc center shaft (21) through a second screw (111) to be fixed with the first carrier (31).
  6. 6. The light beam adjusting mechanism as claimed in claim 5, wherein the light beam adjusting mechanism further comprises a first side set screw (211) and a second side set screw (221), wherein the first side set screw (211) penetrates through the first turntable central shaft (21) to radially abut against the peripheral wall of the first turntable (11) or the first carrier (31), and the second side set screw (221) penetrates through the second turntable central shaft (22) to radially abut against the peripheral wall of the second turntable (12) or the second carrier (32).
  7. 7. The light beam adjusting mechanism as set forth in claim 5, wherein the light beam adjusting mechanism further comprises a double turntable carrier (5) having a ring shape, the first carrier (31) is at least partially disposed in the double turntable carrier (5), the double turntable carrier (5) is fixed to the first carrier (31) by a third screw (51), the second turntable central shaft (22) and the second carrier (32) are each at least partially disposed in the double turntable carrier (5), the double turntable carrier (5) is fixed to the second turntable central shaft (22) by a fourth screw (52), and the double turntable carrier (5) is further fixed to the second carrier (32) by a fifth screw (53).
  8. 8. A light beam adjusting mechanism comprises a first wedge angle sheet (61) and a second wedge angle sheet (62) for a light beam to pass through, and is characterized in that: The light beam adjusting mechanism further comprises a first rotary table (11) and a second rotary table (12), the rotation axes of the first rotary table (11) and the second rotary table (12) are axes (X), the first wedge angle piece (61) is linked with the first rotary table (11), and the second wedge angle piece (62) is linked with the second rotary table (12).
  9. 9. The light beam adjusting mechanism as claimed in claim 8, wherein the first turntable (11) is directly or indirectly fixed to or released from the first turntable central shaft (21), so that the first turntable (11) can be rotated synchronously with the second turntable (12) or independently from the second turntable (12).
  10. 10. The light beam adjusting mechanism according to claim 9, wherein the light beam adjusting mechanism further comprises a first rotating disc center shaft (21) and a first carrier (31), the first wedge angle piece (61) is fixed on the first carrier (31), the first rotating disc (11) and the first carrier (31) are clamped and synchronously rotate from two axial sides of the first rotating disc center shaft (21), and the first rotating disc (11) can be fixed or unfixed with the first rotating disc center shaft (21); The light beam adjusting mechanism further comprises a second turntable central shaft (22) and a second carrier (32), the second wedge angle piece (62) is fixed on the second carrier (32), and the second turntable (12) and the second carrier (32) are clamped from the two axial sides of the second turntable central shaft (22) and synchronously rotate.

Description

Beam adjusting mechanism Technical Field The utility model relates to the technical field of optics, in particular to a light beam adjusting mechanism. Background In the optical field, a common beam displacement compensation mode is adopted, namely, a parallel flat plate is adopted, and displacement in different directions is adjusted by changing the angle of the parallel flat plate. The common way to change the parallel plate is to install a universal wheel under the parallel plate and deflect the parallel plate in different directions, so that the light beam passing through the parallel plate can be adjusted in translation in any direction. Because the deflection in different directions is basically controlled by hands, and the deflection degree is small and is usually not more than 10 degrees, the adjustment precision is low. In addition, there is also an electric control method, such as a continuously adjustable optical attenuator disclosed in chinese patent No. 201020668593.6, which includes a light source capable of emitting a light beam, a first plate optical element and a second plate optical element are disposed in the advancing direction of the light beam, the first plate optical element and the second plate optical element are respectively disposed on a first rotating platform and a second rotating platform, the first rotating platform and the second rotating platform are disposed on an operating platform, the first rotating platform and the second rotating platform are associated with each other in a gear engagement manner, the rotation angles between them are equal and the rotation directions are opposite, and a femtosecond laser beam track scanning device for micro-pore machining disclosed in chinese patent No. 202221531738.7, when the light beam with a certain angle is incident on a parallel plate, the relative rotation angle of the two parallel plates is controlled by a driving motor, the synchronous dynamic translation of the deflection wedge group and the parallel plate group is realized by controlling the synchronous motion of the deflection wedge group, and the deflection angle of the light beam can be changed, so that the taper of the machining hole can be precisely controlled. In the above adjustment mode, the adjustment accuracy is low, and in addition, the rotation axis of the parallel plate is perpendicular to the incident light path, reflection occurs when the parallel plate rotates to be perpendicular to the incident light, and the return loss is uncontrollable. Disclosure of utility model The utility model aims to solve the technical problems of the prior art, and provides a light beam adjusting mechanism which is simple in structure and high in adjusting precision. The first technical scheme adopted by the utility model for solving the technical problems is that the light beam adjusting mechanism comprises a first parallel flat plate and a second parallel flat plate which are used for a light beam to pass through, and is characterized in that: the light beam adjusting mechanism further comprises a first rotating disc and a second rotating disc, the rotating axes of the first rotating disc and the second rotating disc are axes, the first parallel flat plate and the second parallel flat plate are obliquely arranged relative to the axes, the first parallel flat plate is linked with the first rotating disc, and the second parallel flat plate is linked with the second rotating disc. The relative rotation of the two parallel plates is realized through the turntable, the structure is simple, the operation is also simple, and the turntable structure can realize the accurate adjustment of the angle, so that the displacement of the light beam is accurately adjusted. Further, the axis coincides with or is parallel to the incident direction of the light beam, so that the incident angle of the light beam is not changed and no return loss is generated during the rotation of the parallel plate. Further, the first turntable and the second turntable can be indirectly fixed or unfixed, so that the first turntable and the second turntable can synchronously rotate or independently rotate relative to the second turntable, and therefore, when synchronously rotating, the adjustment of the displacement direction of the light beam can be realized. Further, in order to facilitate the arrangement of the two turntables and the parallel flat plates, the light beam adjusting mechanism further comprises a first turntable central shaft and a first carrier, wherein the first parallel flat plate is fixed on the first carrier, the first turntable and the first carrier are clamped and synchronously rotate from the two axial sides of the first turntable central shaft, and the first turntable can be fixed or unfixed with the first turntable central shaft; the light beam adjusting mechanism further comprises a second turntable central shaft and a second carrier, the second parallel flat plate is fixed on the second c