摘要
提出了一种大相对孔径轻小型光学系统的设计方案,给出了设计方案及热分析结果。光学系统工作谱段500～800nm,视场角9°,相对孔径1/1.2,光学系统设计结果良好,弥散斑直径在两个像元尺寸之内,能够满足光学系统对能量集中度和弥散斑的要求。基于光学热补偿理论对光学系统进行了无热化分析和消热设计。通过分析不同温度下的传递函数和能量集中度曲线,可以看出在-10℃～40℃温度范围内系统性能稳定,基本实现无热化。
The Paper presents an optical system design of light CCD star sensor with low F-number,and atermalization is also done based on the compensation theory of thermal dispersion,giving the design and thermo-optical analysis results.The lens system is composed of seven lens which has an F-number of F/1.2,a field of view of 9 degrees,and a working wavelength range of 500～800nm.The geometric spot dispersed in two pixels at its focal surface,which can satisfied the requirement of the encircled energy and spot dispersion.The encircled energy and modulation transfer function of the lens at different temperatures are given as examples,It shows that the athermal optical system can work steadily within the temperature range of -10℃～40℃.
出处
《航天返回与遥感》
2011年第3期36-42,共7页
Spacecraft Recovery & Remote Sensing
基金
国家重大科技专项工程
