大相对孔径甚高精度星敏感器光学系统设计

甚高精度星敏感器是目前精度最高的姿态敏感器。结合星敏感器系统探测要求计算出光学系统参数，在Code V平台上实现了具有良好像质的大相对孔径星敏感器光学系统。系统焦距为90 mm，相对孔径为1/1.5，视场角为7°，光谱范围为0.45～0.85 μm 。系统中高次非球面的使用提高了像质，满足了对弥散斑、能量集中度、畸变、垂轴色差等像差的特殊要求。光学系统总长仅为90.36 mm,符合实际工程小型化、轻量化的需求。同时，光学系统在要求温度范围内性能稳定，消热差和抗离焦效果良好。

Abstract

The very high precision star sensor is the most accurate attitude sensor at present. According to the star sensor system detection requirements, the optical system parameters are figured out. A kind of optical structures of star sensor with small F-number and good imaging quality is realized on the stage of Code V software. The system has an effective focal length of 90 mm, an F-number of 1.5, a field of view of 7°, and a working wavelength range of 0.45～0.85 μm. The imaging quality is enhanced and special requirements of the spot, energy concentration, distortion, lateral color etc., are all satisfied. The total system length is only 90.36 mm, which meets the demand of miniaturization and light weight in engineering. Meanwhile, it works steadily with high optical quality in the required temperature range and has good athermal and anti-defocus performances.

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闫佩佩, 樊学武. 大相对孔径甚高精度星敏感器光学系统设计[J]. 激光与光电子学进展, 2011, 48(9): 092202. Yan Peipei, Fan Xuewu. Design of Optical System of Very High Precision Star Sensor with Small F-Number[J]. Laser & Optoelectronics Progress, 2011, 48(9): 092202.

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