Alignment device and method for optical axis of collimator and optical axis of optical-mechanical system in stray light testing

Abstract

The invention relates to an alignment device and method, in particular to an alignment device and method for the optical axis of a collimator and the optical axis of an optical-mechanical system in stray light testing. The invention aims to solve the problems in the prior art, an auto-collimation aiming method has the technical problems that the device structure is complex, the cost is high, the cubic mirror indirect optical axis leading-out method is low in efficiency and high in operation difficulty, and a to-be-tested system focusing judgment method can only carry out qualitative judgment and is only suitable for a pure optical system. The alignment device and method for the optical axis of a collimator and the optical axis of an optical-mechanical system in stray light testing are provided. A collimator is formed by a planar folding shaft mirror and a parabolic mirror of the device and is arranged in a structural frame. The horizontal line laser and the vertical line laser are bothinstalled on the structural frame and emit laser rays which are reflected by an X-axis reference plane mirror and a Y-axis reference plane mirror of the to-be-measured optical machine system respectively, and the permeable receiving screen is arranged in a common area of the horizontal laser rays, the vertical laser rays and respective reflected laser rays. The method is carried out by using thedevice.

Description

technical field [0001] The invention relates to an alignment device and method, in particular to a device and method for aligning the optical axis of a parallel light tube and the optical axis of an optical machine system in a stray light test. Background technique [0002] Collimator is the most basic optical instrument in optical calibration and inspection. Collimator and light source can provide infinite collimation target, which is used to simulate space target with different characteristics, such as in stray light test (that is, point source transmission In the stray light test, referred to as the stray light test), since the transmittance curve of the point source is the angular distribution function of the stray light of the optomechanical system to be tested, it is necessary to align the collimator with the optical axis of the light source to match the simulated infinity Stray light (stray light) is radiated, and then the optical axis of the collimator is calibrated ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problems of the existing stray light test collimator optical axis and the optical axis alignment of the optical machine system. The operation is difficult, and the focus judgment method of the system to be tested can only be qualitatively judged and is only applicable to the technical problems of a simple optical system. A device and method for aligning the optical axis of the parallel light tube and the optical axis of the optical machine system in the stray light test is provided.

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