System and method for calibrating optical axis of non-spherical reflecting mirror

Abstract

The invention relates to a system and a method for calibrating an optical axis of a non-spherical reflecting mirror. The system comprises a first optical path, a second optical path and a third optical path, wherein the first optical path comprises a frame I, a compensator, a laser interferometer I and a PC (personal computer) which are sequentially arranged; the second optical path is characterized in that the compensator in the first optical path is removed, a lens of the laser interferometer I in the first optical path is replaced with a flat standard lens, and an adjustment system is mounted and fixed on a frame II through a mesopore of the non-spherical reflecting mirror; the third optical path is structurally characterized in that a posture adjusting tool in the second optical path is fixedly connected with a lathe rotating shaft, and the laser interferometer II in the second optical path is replaced with an internal focusing telescope. According to the system and the method, the optical axis of the non-spherical reflecting mirror is accurately found out in an optical non-contact manner, and a traditional method for determining the optical axis of the non-spherical reflecting mirror through meter running is abandoned.

Description

technical field [0001] The invention belongs to the field of optical assembly and detection, and in particular relates to a method and a system for determining an optical axis of an aspheric reflector. Background technique [0002] The spherical reflector has an infinite number of optical axes, and all the optical axes pass through the spherical center of the spherical reflector. The aspheric reflector has only one optical axis, and it is rotationally symmetrical with respect to the optical axis, that is, the optical axis of the aspheric reflector is its symmetry axis and the approximate spherical center of the aspheric reflector also falls on this optical axis. [0003] Determining the optical axis of the aspheric mirror is of great significance to the assembly, debugging and inspection of the optical system. In the current application of aspheric mirrors, there is often a hole in the middle of the mirror surface, which greatly increases the difficulty of determining its o...

AI Technical Summary

Problems solved by technology

In the current application of aspheric mirrors, there is often a hole in the middle of the mirror, which greatly increases the difficulty of determining its optical axis. How to accurately calibrate the optical axis of aspheric mirrors has become an unavoidable engineering problem.

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