摘要
介绍了一种长波红外双视场扫描型光学系统。描述了扫描型双视场光学系统的设计模型,利用摆镜扫描实现视场扩展,采用光路中径向切入镜组实现变倍比为2.5倍的双视场设计,其F数为1.67,摆镜扫描角度为±6.5°。光学系统采用Ge、ZnS两种红外材料,使用非球面技术很好地校正了系统像差,传函接近衍射极限,在-40～+60℃环境温度范围内系统具有良好的成像质量,可用于机载或车载光电系统。
A long-wave infrared （LWIR） dual-field scanning optical system is introduced. model of dual-field scanning optical system is depicted. Through the oscillating mirror scanning, view （FOV） is enlarged The design the field of By inserting vertically a set of lens in the system, the dual-FOV design for 2.5 zoom ratio is realized. The F number is 1.67, and the scanning angle of the oscillating mirror is ±6.5 °. The optical system is designed by using two common optical materials, Ge and ZnS. The aberration can be well corrected by use of non-spherical technology. The MTF approaches the diffractive limit, and the system has fine image quality in the temperature range from - 40 ℃ to 60 ℃. It can be used in the electro-optical system onboard the aircrafts and ground vehicles.
出处
《电光与控制》
北大核心
2013年第3期77-80,共4页
Electronics Optics & Control
关键词
红外探测
扫描成像系统
双视场
线列探测器
像质评价
infrared detection
scanning imaging system
dual field of view
linear array detector
image evaluation
