Optical system and optical method for synthesizing star points by double slits in parallel optical paths

Abstract

The invention discloses an optical system and an optical method for synthesizing star points by double slits in parallel optical paths and belongs to the technical field of optical precision measurement. The optical system comprises an objective lens front group, an objective lens rear group, a beam splitting prism, a light source illuminating system and a collimating receiving sensor; a double telecentric form and a horizontal-vertical slit orthogonal synthesis method are adopted for double slit synthesis of the star points, and collimating measurement of a light source and fusion of star points and the light source can be realized in the same parallel optical path; meanwhile, by quick switching of a rear-end collimating LED light source and a star model LED light source and ingenious design of the beam splitting prism of the light source in the optical path, function switching of collimating measurement and fixed star simulation can be conveniently realized. The invention overturns the design of the star points in a traditional star model system and provides the optical system with simple structure and convenience in adjustment and the optical method for synthesizing the star points by the double slits in the parallel optical paths.

Description

technical field [0001] The invention belongs to the technical field of optical precision measurement, and in particular relates to a double-slit composite star-point optical system in a parallel optical path and a method thereof. Background technique [0002] In spacecraft attitude control, inertial combination devices or star sensors are generally used for high-precision attitude measurement and control. In the laboratory calibration test, the inertial component often adopts the self-collimation measurement method to measure and calibrate the reference plane of the inertial combination device; while the star model sensor usually requires an analog star for the optical axis calibration of the star sensor. The self-collimating device is called an autocollimator, and the device that simulates a star is called a star simulator. In the self-collimation measurement, the light emitted by the light source illuminates the collimated slit reticle. The slit reticle is located on the ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a double-slit synthetic star in a parallel optical path with simple structure and convenient installation and adjustment, aiming at the technical problem of both collimation measurement and starlight simulation that cannot be realized by the existing optical system in the background technology. Point optical system and its method

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