摘要
介绍了一种用于卫星姿态控制的星敏感器光学系统,该光学系统焦距为51mm,相对孔径为1/1.1,视场角为21°×21°(圆视场2ω=30°),光谱范围为0.5～0.85μm,采用了复杂化双高斯结构.与普通成像系统不同的是,该系统要求对不同光谱的恒星所采集到的点像能量中心是一致的,且星像点像的弥散圆须控制在一定的范围内.具有倍率色差小、轴上和轴外能量分布比较一致的特点.
This paper presented an optical system of star sensor. The lens system was a complicated double- Gauss configuration which had an effective focal length of 51 mm, an F-number of F/1.1, a field of view of 21°×21°（2ω=30°） ,and a working wavelength rang of 0.5-0. 85 μm. The difference from common lens used in imaging system was that this lens system was required to have a high resolving power in the geometric pattern of stars. It was required to deliver the geometric spot dispersion in the specific rang at its focal surface and lower difference of displacements of centroids from thief ray in the interesting spectral range.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2005年第12期1822-1824,共3页
Acta Photonica Sinica
关键词
星敏感器
光学设计
倍率色差
Star sensor
Optical system Design
Lateral color
