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Proceedings Paper

Design of twin computer-generated holograms used for testing concave conic mirrors
Author(s): Yi Xie; Qiang Chen; Fan Wu
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Paper Abstract

A circular computer-generated hologram (CGH) for testing a concave conic mirror is designed. It consists of two segments, called main CGH and alignment CGH. Main CGH, which is fabricated on the inner part of a flat substrate, used for testing a conic mirror. The outer segment is alignment CGH, used for calibrating the main CGH precisely and eliminating misalignment errors such as tilt, decentre and defocus. Both of them are fabricated on the same substrate. First, the principle and process are reviewed. Then an example designed for measurement of paraboloidal mirror (diameter, 300mm, f number 1.5) is presented. At last the designed data is verified with ZEMAX and the residual error of outgoing wavefront is 0.0018λ (P-V).

Paper Details

Date Published: 17 January 2008
PDF: 6 pages
Proc. SPIE 6723, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 67235S (17 January 2008); doi: 10.1117/12.783801
Show Author Affiliations
Yi Xie, Institute of Optics and Electronics (China)
Graduate School of the Chinese Academy of Sciences (China)
Qiang Chen, Institute of Optics and Electronics (China)
Fan Wu, Institute of Optics and Electronics (China)


Published in SPIE Proceedings Vol. 6723:
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Junhua Pan; James C. Wyant; Hexin Wang, Editor(s)

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