摘要
离轴三反光学系统具有成像质量高、可实现大视场、无遮拦等优点,但其装调难度大,镜面支撑结构质量大。为解决这些问题,基于三级像差理论,研究一种主镜、三镜可集成一体化的大视场离轴三反光学系统,并以焦距为1 200 mm,F数为12,视场为10°×1°的光学系统为例进行了验证设计。结果表明:调制传递函数接近衍射极限,视场内平均波像差RMS值为λ/55,最大波像差RMS值为λ/22。设计结果显示,光学系统装调自由度由12个减少到6个,可使光机系统可得到简化,实现了主三镜一体化设计。
Off-axis three-mirror system（OTMS） has the advantage of high image quality, large field of view and non-obscuration. But drawbacks also exist, such as the alignment difficulty, cost and large optomechanical weight. In order to solve these problems, the design of a novel OTMS was necessary. In this design, the primary mirror and tertiary mirror can be integrated on a single substrate based on thirdorder aberration theory. An example which has a focal length of 1 200 mm,F-number of 12 and field of view of 10° ×1° was given. The mean WFE rms was λ/55, and the maximum WFE rms was λ/22. The result of this design shows that the number of alignment freedoms was reduced from 12 to 6, the weight of the mirror support assembly also can be lighter.
出处
《红外与激光工程》
EI
CSCD
北大核心
2015年第2期578-582,共5页
Infrared and Laser Engineering
基金
国家自然科学基金(60507003)
关键词
光学设计
离轴三反光学系统
像差理论
一体化设计
optical design
off-axis three-mirror system
aberration theory
integration design
