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.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2004年第3期756-761,共6页
Acta Physica Sinica
基金
国家自然科学基金 (批准号 :60 2 770 2 1)
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基金联合资助 (批准号 :DA0 1Q0 2D)的课题~~
