A two-dimensional large-angle fast deflection mirror

A reflective mirror, large-angle technology, applied in the direction of instruments, installation, optics, etc., can solve the problems of damage to the voice coil motor, collision, etc., to eliminate the translation of the reflected beam and improve the control accuracy

Active Publication Date: 2020-11-24
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

Currently, piezoelectric ceramics and linear voice coil motors are mainly used as driving components for fast deflecting mirrors. For large-angle application scenarios such as image motion compensation, linear voice coil motors are often used to drive fast deflecting mirrors. As the deflection angle increases, the magnetic steel of the linear voice coil motor will collide with the coil, resulting in damage to the voice coil motor

Method used

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  • A two-dimensional large-angle fast deflection mirror
  • A two-dimensional large-angle fast deflection mirror
  • A two-dimensional large-angle fast deflection mirror

Examples

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Embodiment Construction

[0025] The present invention will be described in more detail below in conjunction with the accompanying drawings and embodiments.

[0026] combine Figure 1 to Figure 4 Shown: a kind of two-dimensional large-angle fast deflection reflector, comprises reflector assembly 1, support assembly 2, drive assembly 3, sensor assembly 4 and base 5, reflector assembly 1 comprises reflector 11 and is used to install reflector mirror seat 13, the upper end of the support assembly 2 is connected to the mirror seat 13 by screws, the lower end of the support assembly 2 is connected to the base 5 by screws, and one end of the drive assembly 3 is connected to the mirror seat 13. The back is connected, the other end of the driving assembly 3 is connected with the base 5, the base 5 is provided with a mounting hole 52, the sensor assembly 4 is arranged in the mounting hole 52, and the sensor assembly 4 faces the reflector seat 13 and detects the reflection generated by the reflector 11. Displac...

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Abstract

A two-dimensional large-angle fast deflection mirror, including a mirror assembly, a support assembly, a drive assembly, a sensor assembly, and a base. The support assembly is a self-made ball bearing that can rotate freely around the center of the ball and is preloaded by a conical coil spring. To keep it at the initial zero-angle position without driving external force, the driving component uses four voice coil motors as the driving element, the spherical center of the voice coil motor coincides with the spherical center of the supporting component, and the voice coil motor pushes the supporting component Two-dimensional rotation, the gap between the magnetic steel and the coil of the voice coil motor is always a constant value, there will be no collision with each other, and a considerable deflection angle can be generated. The spherical center of the supporting component and the driving component is located on the reflective surface of the plane mirror. Therefore, the two mutually perpendicular deflection axes of the reflector are located on the surface of the reflector. In the process of rapidly deflecting the reflector, the translation of the reflected beam caused by the misalignment of the deflection axis and the surface of the reflector can be eliminated, and the control accuracy of the beam can be improved.

Description

technical field [0001] The invention relates to the technical field of precision optical mechanical structure design, in particular to a two-dimensional large-angle fast deflection mirror. Background technique [0002] As a component for fast and precise control of beam pointing, fast deflecting mirrors are more and more widely used in aviation, aerospace and industrial fields. The functions of fast deflecting mirrors in optical systems mainly include visual axis stabilization and image motion compensation. Currently, piezoelectric ceramics and linear voice coil motors are mainly used as driving components for fast deflecting mirrors. For large-angle application scenarios such as image motion compensation, linear voice coil motors are often used to drive fast deflecting mirrors. As the deflection angle increases, the magnetic steel of the linear voice coil motor will collide with the coil, resulting in damage to the voice coil motor. Therefore, it is necessary to design a l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B26/08G02B7/182
CPCG02B26/0816G02B7/1821
Inventor 徐宁李贤涛
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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