于声光可调谐滤波器(acousto-optic tunable filter, AOTF)工作原理, 设计出一工作波段500~1 000 nm, 视场10°×10°的光谱成像系统。该系统由三组镜头组合而成, 前置物镜与准直镜形成望远系统, 后组成像镜头采集AOTF产生的正一级衍射光, 利用ZEMAX软件进行消像差设计, 全系统在40 lp/mm处的MTF均大于0.5, 其他像差也达到了要求。

Based on the operation principle of acousto-optic tunable filter (AOTF), a hyper-spectral imaging system with 500~1 000 nm operation wavelength and 10°×10° field of view is designed. The system is consisted of three groups of optic lenses. The fore-optical system is a focal system including objective and collimating lens, the back-imaging lens collects the +1 order diffraction beams produced by the AOTF. The whole system is optimized by ZEMAX, and imaging resolution is better than 40 lp/mm when MTF is 0.5, other aberration requirements are met as well.