Optical Design of Wide Field View and Large Relative Aperture Off-axis Three-mirror Reflective System with Tilted Optical Axis

被引：4
|
作者：
Liu Qiang [1 ]
Wang Xin [1 ]
Huang Geng-hua [1 ]
Shu Rong [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Tech Phys, Key Lab Space Act Optoelect Technol, Shanghai 200083, Peoples R China
来源：
ACTA PHOTONICA SINICA | 2019年 / 48卷 / 03期
关键词：
Optical design; Space optics; Linear astigmatism balance; Off-axis three-mirror reflective system; Large field of view;
D O I：
10.3788/gzxb20194803.0322002
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The linear astigmatism balance condition of the off-axis three-mirror optical system was deduced, on that base the off-axis three-mirror reflective system for astigmatism correction with large relative aperture and large field of view was proposed by tilting the optical axis. The field of view is 5 degrees X 5 degrees, relative aperture is 1/3.1, entrance pupil diameter is 250 mm and spectral range is 400 similar to 2 500 nm. The proposed system was compared with the off-axis three-mirror reflective system of coaxial quadratic aspheric surface and the off-axis three-mirror reflective system of coaxial high-order even aspheric surface with the same optical parameters. The results show that the optical transfer function of off-axis three mirror reflective system with tilted optical axis is greater than 0.73 at 17 1p/mm in all field of view. It uses conical surfaces and shows obvious advantages in imaging quality. In addition, the processing and adjustment of off-axis three-mirror reflective system with tilted optical axis are analyzed, the tolerance is relatively loose and the structure can be realized.
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页数：11
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