1 September 2004 Design of a novel star tracker optical system
Author Affiliations +
We present a novel method of increasing the focal depth of an optical system that can be used in a star tracker. The method is based on a special phase plate that is placed in the vicinity of the aperture stop of an optical system to produce the required spot size over a large focal depth. Phase retardation was applied to a lens system having a focal length of 30 mm, an F-number of 2, a working wavelength range of 0.5~0.75 μm and a view angle of 20 degrees. The performance of a lens having a suitable quartic phase was analyzed, and it was shown that the focal depth of such a lens system can be extended more than threefold as compared to a system having no phase plate.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Xinping Liu, Xinping Liu, Xianyang Cai, Xianyang Cai, Costel Flueraru, Costel Flueraru, Shoude Chang, Shoude Chang, Chander P. Grover, Chander P. Grover, } "Design of a novel star tracker optical system", Proc. SPIE 5418, Spaceborne Sensors, (1 September 2004); doi: 10.1117/12.541609; https://doi.org/10.1117/12.541609


Back to Top