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Chin. Opt. Lett.
 Home  List of Issues    Issue 06 , Vol. 14 , 2016    10.3788/COL201614.060801

Compact freeform off-axis three-mirror imaging system based on the integration of primary and tertiary mirrors on one single surface
Tong Yang, Jun Zhu, and Guofan Jin
State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, [Tsinghua University], Beijing 100084, China

Chin. Opt. Lett., 2016, 14(06): pp.060801

Topic:Geometric optics
Keywords(OCIS Code): 220.2740  080.4225  080.4228  

In this Letter, a novel and compact freeform off-axis three-mirror imaging system and its detailed design method are proposed. The primary mirror and tertiary mirror of the system have the same surface analytical expression and they are integrated on one single freeform surface. In this way, the alignment process is made much easier due to the much fewer degrees of freedom. In addition, the difficulty and cost for the data handling, fabrication, and testing of the freeform surfaces and system can also be significantly reduced in some cases, especially compared with the configuration having multiple surfaces of different expressions integrated on one monolithic substrate. The final system has a 100 mm effective focal length and a 4°×3° field of view. The modulation transfer function of the system is close to the diffraction-limit.

Copyright: © 2003-2012 . This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Posted online:2016/5/20

Get Citation: Tong Yang, Jun Zhu, and Guofan Jin, "Compact freeform off-axis three-mirror imaging system based on the integration of primary and tertiary mirrors on one single surface," Chin. Opt. Lett. 14(06), 060801(2016)

Note: This work was supported by the National 973 Program of China under Grant No. 2011CB706701.


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