56mm焦距重心定位用光学系统

文章中介绍的光学系统是一个56mm焦距,相对孔径为1/1.3,视场角为11.3°,后截距>10mm,光谱范围为046～0.75μm的六块无胶合透镜组成的镜头.该光学系统只有两种低吸收、物理、化学性能良好的普通光学玻璃材料(Bak6和ZF2)组成,因此可以有高的透过车;全视场范围内各色光重心偏之差小于±1.2μm,象面上80%能量集中在24μm～54μm之间.与一般光学系统相比,它具有各色光重心偏差值小、和轴上、轴外能量分布比较一致的特点.

56mm LENS SYSTEM FOR MAPPING DISPLACEMENT OF CENTROIDS 0F STARS

In this paper a lens system configuration having six uncemented elements is discussed. Thelens system is a 56mm EFL, ll- 3" field, complicated Petzval configuration. It is different fromcommon lens used in imaging system that this lens system is required to have a high resolving power indesign thoughts. It was designed to determine the attitude of space platform by detecting and mappingthe geometric pattern of stars. Aberrations were controlled over a O- 46~0. 75Um spectral regi0n. It isrequired to deliver the geometric spot dispersion in the specific range at its focal surface and lowerdifference of displacements of centroids from thief ray in the interesting spectral range. Only two kindsof common glass materials with low absorption and good properties were utilized in the lens system.