一种激光与红外复合光学系统设计

Design of laser and infrared compound optical system

介绍了一种半主动激光与长波红外共口径复合光学系统。光学系统采用折反式光路结构,半主动激光系统与长波红外系统在主反射镜处实现共口径复合。利用反射元件无色差的特性,可以有效地实现两种波段的共口径共光路传输。经过主次反射镜反射后,两种波段的入射光通过分光器件高效地实现分离,分别进入各自探测器中,实现了复合光学系统设计。通过采用折反式光路,结构保持了相对紧凑;前段望远物镜系统采用卡塞格林式反射系统,具有无色差的优点,同时避免了选用价格昂贵的宽波段透光材料,实现了成本控制。

A semi-active laser and long＇wave infrared compound optical system with common aperture is introduced. The catadioptric system is used in the compound system, and the semi-active laser system and the infrared system a- chieve the common aperture at the primary mirror. According to the characteristic of no aberration for the mirror, opti- cal transmission with common aperture and common optical path can be achieved effectively. After reflected by the mirrors ,the two wavebands are split by the beam splitter, and then the split light enter into the corresponding detectors respectively. The compound optical system has the advantages of compact structure, no aberration and low cost.