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Proceedings Paper

Simultaneous null test of primary mirror and tertiary mirror in off-axis three-mirror optical system
Author(s): Yajun Niu; Jun Chang; Weilin Chen; Benlan Shen
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Paper Abstract

The null test of off-axis mirror plays a very important role in off-axis three mirror optical system design. The detection device depends on either complex detection optical system designs or high-precision null lens design. Both can only test one off-axis mirror and are not non-universal. In order to increase the detection efficiency, we innovatively propose a simultaneous null test method of primary mirror and three mirror in off-axis three mirror optical system. The simultaneous null test device is composed of a liquid zoom null lens. Simulation results show that the residual wavefront errors of testing a primary mirror and tertiary mirror are approximately 0.001λ peak-to-valley (PV), and 0.003λ (PV), respectively.

Paper Details

Date Published: 31 October 2016
PDF: 7 pages
Proc. SPIE 10021, Optical Design and Testing VII, 100211I (31 October 2016); doi: 10.1117/12.2246083
Show Author Affiliations
Yajun Niu, Beijing Institute of Technology (China)
Jun Chang, Beijing Institute of Technology (China)
Weilin Chen, Beijing Institute of Technology (China)
Benlan Shen, Beijing Institute of Technology (China)

Published in SPIE Proceedings Vol. 10021:
Optical Design and Testing VII
Yongtian Wang; Tina E. Kidger; Kimio Tatsuno, Editor(s)

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