An optical design for dual-band infrared diffractive telescope

被引：3

作者：

Wang Hao ^{[1
,2
]}

Kang Fu-Zeng ^{[1
]}

Zhao Wei ^{[1
]}

Li Yi-Chao ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Shaanxi, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

JOURNAL OF INFRARED AND MILLIMETER WAVES | 2019年 / 38卷 / 01期

关键词：

diffraction efficiency; HDE; optical design;

D O I：

10.11972/j.issn.1001-9014.2019.01.007

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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.

引用

页码：39 / 43

页数：5

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