Method and system for leading out optical axis of high-precision off-axis aspherical reflector

Abstract

The invention discloses a method and a system for leading out an optical axis of a high-precision off-axis aspherical reflector. The method comprises the following steps of: constructing an optical system; switching an optical interferometer into a plane wave emitting mode to obtain parallel light beams; leading parallel light beams emitted by the optical interferometer to a reflecting surface, facing the optical interferometer, of a standard plane mirror through the standard plane mirror and marking the reflecting surface as a surface A; respectively leading out the optical axis of the measured off-axis aspherical reflector and other reference surface normal lines capable of directly testing directions through a first theodolite and a second theodolite, and establishing an angle relationship between the optical axis of the measured off-axis aspherical reflector and the other reference surface normal lines capable of directly testing directions through mutual aiming; and leading out the optical axis of the measured off-axis aspherical reflector to other reference surface normal lines capable of directly testing the direction according to the established angle relationship, therebyrealizing optical axis leading-out. According to the invention, the problems of low leading-out precision or narrow application range and the like in the prior art are solved.

Description

technical field [0001] The invention belongs to the technical field of optical remote sensing, and in particular relates to a method and system for extracting the optical axis of a high-precision off-axis aspheric mirror. Background technique [0002] Aiming at the problem of the optical axis of the off-axis aspheric mirror, the currently commonly used solution is: (1) Measure the spatial coordinates of each point on the mirror surface by three coordinates, obtain the direction of the optical axis through surface fitting, and determine the relationship between the optical axis and the reference plane , to complete the extraction of the optical axis. (2) Using the method of center deviation measuring instrument plus displacement sensor, the measured mirror is placed on the turntable of the center deviation measuring instrument, and the displacement sensor is set up on the edge of the measured mirror to measure the displacement on different ring belts on the edge of the mirror...

AI Technical Summary

Problems solved by technology

[0006] The technical problem of the present invention is to overcome the deficiencies of the prior art and provide a method and system for extracting the optical axis of a high-precision off-axis aspheric mirror, aiming to solve the problems of low extraction accuracy or narrow application range in the prior art

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