An optical path pointing precision adjustment device

Abstract

A light path pointing precision adjustment device includes a support base, four drivers, two rigid rods, four flexible hinges, a flexible sheet, an adapter plate and a reflector. The driver includes a diamond-shaped housing, three piezoelectric ceramics, and two spacers. The first and third drivers are symmetrically located on the first plane of the support base, and the second and fourth drivers are symmetrically located on the second plane of the support base, and are connected by screws. One end of the two rigid rods is connected with the first and third drivers through threads, and the other end is connected with the flexible hinge through threads. The second and fourth drivers are respectively connected with the flexible hinge through threads. The four flexible hinges are respectively connected with the adapter plate through nuts. The flexible sheet, the adapter plate, and the reflector are connected by screws and nuts, and the flexible sheet and the support base are connected by screws. When different voltages are applied to the four sets of actuators, the four flexible hinges will show different displacement changes, thereby driving the mirrors to achieve two-dimensional deflection, and then finely adjusting the direction of the optical path.

Description

technical field [0001] The invention belongs to the technical field of precision optical mechanical structure design, and in particular relates to an optical path pointing precision adjustment device, which can realize the precise adjustment of the optical path pointing in an optical system. Background technique [0002] The optical path pointing precision adjusting device is a precise optical device used for the precise adjustment of the beam pointing in the optical system. It is required to have the characteristics of high reliability, high pointing accuracy and good stability. [0003] With space laser radar, space laser communication technology, and optical fields, there is an urgent need for precise positioning of pointing mirrors, especially high-precision optical path pointing adjustment devices used in space environments, which are important for inter-satellite laser communication, space laser remote sensing telemetry, etc. effect. [0004] Prior Art 1: Title of Inv...

AI Technical Summary

Problems solved by technology

This invention uses four groups of displacement amplification units symmetrically distributed on the base, and drives the rotation of the upper platform by controlling each piezoelectric ceramic actuator, but the deflection angle of this invention is limited by the dimensions of the four drivers, and its displacement amplification Limited multiple, limited adjustment range

And the lack of a rotating fulcrum in the middle of the platform, this shortcoming leads to poor linearity of the mechanism, and the stability and precision of the platform will also be affected

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