无热化设计的紧凑型长波折反式光学系统

摘要

介绍了一种无热化设计的紧凑型长波折反式光学系统,给出了光学系统的主要指标和要求,说明了系统的设计原理.该系统的工作波段为7.7 ～10.3 μm,焦距为270 mm,F数为1.35.光学系统共由7个光学元件构成,构型紧凑,在-40～+60℃温度范围内具有良好像质,实现了无热化.%One compact long-wavelength infrared catadioptric system of athermalization design is introduced, the main technical features and requirements are given, and the design principle of this system is presented. This optical system has the following parameters:waveband range 7.7 ~ 10. 3 μm, focal length 270 mm, F number 1. 35. The compact system is composed of seven optical elements. It is shown that the athermal system can work steadily with high image quality at the temperature from - 40 ℃ to + 60 ℃.