Design of Infrared Inverted Telephoto-Optical System with Double-Layer Harmonic Diffractive Element  

作　　者：范长江 王肇圻 林列 张梅 范海英 

机构地区：[1]Institute of Modern Optics, Nankai University, Tianjin 300071

出　　处：《Chinese Physics Letters》2007年第7期1973-1976,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 60577015.

摘　　要：A double-layer harmonic diffractive element （HDE） structure is investigated and the optimization procedure is given based on the equation of diffraction efficiency of the double-layer diffractive optical element. A new infrared double-layer inverted telephoto-optical system with an HDE is designed, which can work in the mid- and farinfrared wavebands. The diffraction efficiency of the system at each wavelength in the designed two wavebands is larger than 90%, which improves the image contrast and the imaging quality significantly.A double-layer harmonic diffractive element （HDE） structure is investigated and the optimization procedure is given based on the equation of diffraction efficiency of the double-layer diffractive optical element. A new infrared double-layer inverted telephoto-optical system with an HDE is designed, which can work in the mid- and farinfrared wavebands. The diffraction efficiency of the system at each wavelength in the designed two wavebands is larger than 90%, which improves the image contrast and the imaging quality significantly.

分 类 号：O43[机械工程—光学工程]