Design and Simulation of CMOS Star Sensor Lens with Large Relative Aperture and Wide Field
A 50mm focal length, F/1.2S, Gaussian type optical system is designed in this paper, which has 20°field of view. Actual star image adding optical cross-talk effect of CMOS (Coraplementary Metal Oxide Semiconductor),detector is simulated by non-sequential ray tracing in ZEMAX? optical design and analysis software to evaluate its performance. The distortion relative to image spot centriod is introduced and calculated by simulated star images, which is less than 0.03％ of lens in this paper. Thermal adaptability is discussed by opt-mechanic thermal analysis, which shows the RMS spot radius of marginal filed changes less than 0.7μm under 10 ℃ temperature gradient, and changes less than 1μm during homogeneous temperature changing from -40℃ to +40℃. The results of analyses and simulations show the design of this lens can achieve the requirement of high precision CMOS star sensor well.
star sensor lens optical system energy centroid thermal analysis
Xing Zhong Guang Jin
Changchun Institute of Optics, Fine Mechanics and Physics Chinese Academy of Sciences Changchun, Jilin Province, China
国际会议
哈尔滨
英文
3194-3197
2011-08-12（万方平台首次上网日期，不代表论文的发表时间）