作　　者： ; ; ; ; ;

机构地区： 中国科学院长春光学精密机械与物理研究所应用光学国家重点实验室

出　　处： 《物理学报》 2004年第3期756-761,共6页

摘　　要： 根据谐衍射元件的特殊色散原理及红外波段的窗口特性 ,将谐衍射透镜应用于红外超光谱探测器中 .阐述了利用衍射光学元件色散特性的新型红外双波段超光谱探测成像的基本原理 ,给出了具体的系统设计实例 .设计结果表明 ,此系统提高了图像的分辨率 ,增大了接收光能量的能力 .在两个波段内同时较好地完成了系统的像差校正 ,波前差都小于 1 4波长 .在 2 0线对 mm时 。 In this paper, the application of harmonic diffractive element(HDE) in the infrared hyperspectral detection system is investigated based on the special large dispersion capability of HDE and window character of infrared bands. The fundamental principle of the new infrared hyperspectral imaging is described, and a design sample is presented. It is shown that the resolution is improved and the optical power received is enlarged. The rectification of the ray aberrations in both band has been simultaneously accomplished. Wave front aberrations are less than 1/4 wavelength,and the modulation transfer function of the dual-band in every zoom focus location approaches or attains the diffraction limit of 20 cycles/mm.

关 键 词： 谐衍射元件 红外超光谱探测器 光学设计 色散原理 窗口特性 分辨率 变焦系统设计 谐振波长

领　　域： [电子电信]