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Chin. Opt. Lett.
 Home  List of Issues    Issue 06 , Vol. 15 , 2017    10.3788/COL201715.062202

Design of image-side telecentric freeform imaging systems based on a point-by-point construction-iteration process
Tong Yang, Guofan Jin, and Jun Zhu
State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, [Tsinghua University], Beijing 100084, China

Chin. Opt. Lett., 2017, 15(06): pp.062202

Topic:Optical design and fabrication
Keywords(OCIS Code): 220.2740  080.4225  080.4228  

In this Letter, we present a novel design method of image-side telecentric freeform imaging systems. The freeform surfaces in the system can be generated using a point-by-point design approach starting from an initial system consisting of simple planes. The proposed method considers both the desired object–image relationships and the telecentricity at the image-side during the design process. The system generated by this method can be taken as a good starting point for further optimization. To demonstrate the benefit and feasibility of our method, we design two freeform off-axis three-mirror image-side telecentric imaging systems in the visible band. The systems operate at F/1.9 with a 30 mm entrance pupil diameter and 5° diagonal field-of-view. The modulation-transfer-function curves are above 0.69 at 100 lps/mm.

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:2017/3/21

Get Citation: Tong Yang, Guofan Jin, and Jun Zhu, "Design of image-side telecentric freeform imaging systems based on a point-by-point construction-iteration process," Chin. Opt. Lett. 15(06), 062202(2017)



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