The Design of Infrared Double-layer Refractive/Diffractive Hybrid Petzval Optical System

摘要：

In this paper, a new infrared dual-band Petzval objective with single-layer harmonic diffractive element (HDE) is designed, which can work in the mid- and far-infrared bands. However, the diffraction efficiency of the single-layer harmonic diffractive element is wavelength dependence especially in the higher diffractive orders. To improve the diffraction efficiency, the double-layer HDE structure is investigated and the optimization procedure is given based on the equation of diffraction efficiency of the double-layer diffractive element. Then the infrared dual-band Petzval objective with double-layer HDE is designed. The diffraction efficiency of the system at each wavelength in the designed two bands is larger than 90％, which improves the image contrast and the imaging quality significantly.

关键词： optical design double-layer diffraction harmonic diffractive element (HDE) infrared optical system

作者: FAN Changjiang WANG Zhangqi CHEN Ping Zhang Mei

作者单位: Department Institute of Modern Optics, Nankai University, Tianjin 300071, China,

会议类型: 国际会议

会议名称: 第七届国际测试技术研讨会

会议地点: 北京

会议语种:英文

在线出版日期: 2007-08-05（万方平台首次上网日期，不代表论文的发表时间）