红外与毫米波学报, 2019, 38 (1): 39, 网络出版: 2019-03-19
一种红外双波段衍射望远镜的光学设计
An optical design for dual-band infrared diffractive telescope
摘要
深入研究了双层谐衍射光学元件, 基于衍射效率方程对双层衍射元件的衍射效率进行优化.光学系统在中波红外和长波红外波段的衍射效率均超过了99%, 极大地提高了图像的对比度和像质.设计了一款新型的红外双波段衍射望远镜, 取得了接近衍射极限的成像质量, 易于加工.
Abstract
In this paper, the double-layer harmonic diffractive element (HDE) structure is investigated and the optimization procedure is based on the equation of diffraction efficiency of the double-layer diffractive optical element. The diffraction efficiency of the system in the designed middle and far infrared wavebands is larger than 99%, which improves the image contrast and the imagequality significantly. A new dual-band infrared double-layer HDE telescope is designed, which can work in the middle and far infrared wavebands. It is shown that the system approximately attains diffraction limit and is easy to processed.
王昊, 康福增, 赵卫, 李毅超. 一种红外双波段衍射望远镜的光学设计[J]. 红外与毫米波学报, 2019, 38(1): 39. WANG Hao, KANG Fu-Zeng, ZHAO Wei, LI Yi-Chao. An optical design for dual-band infrared diffractive telescope[J]. Journal of Infrared and Millimeter Waves, 2019, 38(1): 39.