One-dimensional fast control reflector

Abstract

The invention discloses a one-dimensional fast control reflector comprising a reflective lens, an outer frame and an actuator mechanism. The outer frame is an integrally formed structure and comprisesa base, two lens frames, and a lever mechanism. The base has a longitudinal side panel and two horizontal side panels. One end of each of the two horizontal side panels is connected to the lever mechanism by a first flexible hinge. The lens frames are connected to the horizontal side panels by second flexible hinges, and are connected with the displacement amplifying output end of the lever mechanism by first flexible connectors. One end of the actuator mechanism is fixedly connected with the longitudinal side plate, and the other end of the actuator mechanism cooperates with the displacementinput plate of the lever mechanism. The reflector further comprises a capacitive micro-displacement sensor. The capacitive micro-displacement sensor comprises a movable polar plate reflecting the rotation and the deflection of the reflector, and first and second polar plate assemblies under the reflecting lens and achieving differential sensing. The reflector can improve vibration resistance andimpact resistance, and is low in overall height and large in deflection angle.

Description

technical field [0001] The invention belongs to the field of fast control reflectors, in particular to a one-dimensional fast control reflector. Background technique [0002] The fast control mirror is a device that adjusts the mirror angle in real time under the control of the input electrical signal. It has the advantages of small size, fast speed, and high precision. It can realize high-frequency angle pointing, scanning, and stabilization. It is used in adaptive optical compensation, It has a wide range of applications in visual tracking, image stabilization, etc. [0003] The existing fast control mirrors mainly have two driving modes: voice coil motor drive and piezoelectric ceramic drive. Generally speaking, the former has a larger scanning angle but a lower resonance frequency, and the latter has a smaller scanning angle but a higher scanning frequency. [0004] CN103823302A discloses a one-dimensional fast control mirror, which is driven by piezoelectric ceramics, ...

AI Technical Summary

Problems solved by technology

However, it still has the following problems: (1) The rotation angle of the mirror body cannot be detected in real time as the feedback for controlling the micro-displacement of the piezoelectric ceramic actuator. When the mirror mirror deflects due to vibration and impact, it cannot Under control, mirrors have poor vibration and shock resistance

(2) The overall height of the reflector is high, and the range of the deflection angle of the reflector is small

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