The Optical Design Of Dynamic Star Simulator Based On Lcos Splicing Technology

Star simulator acts ground calibration equipment of the star sensor, It testes the related parameters and performance of the star sensor and It provides the star chart for the star sensor at any time and any point of the inertial coordinate system.In order to meet the technical requirements of large field of view for the dynamic star simulator., for againsting the traditional optical system of the star simulator technology characteristic, kind of design basing on the LCOS optical splicing technology of dynamic star simulator optical system is proposed.Combined the technology requirement of the dynamic star simulator, this paper used the LCOS as the core device of star display,through the LCOS optical splicing technology to achieve covering the whole field of view and meet the precision requirements in the design. According to the working principle of the dynamic star simulator, we designed a collimated optical system with small distortion、flat field achromatic to realize the real time accurate simulation of the dynamic star simulator. The design results indicated that the distortion is less than0.022%of the collimation optical system at10.246degree field, the Modulation Transfer Function of optical system have reached0.7in60lp/mm.