Design of twin computer-generated holograms used for testing concave conic mirrors

Yi Xie; Qiang Chen; Fan Wu

doi:10.1117/12.783801

17 January 2008 Design of twin computer-generated holograms used for testing concave conic mirrors

Yi Xie, Qiang Chen, Fan Wu

Proceedings Volume 6723, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 67235S (2008) https://doi.org/10.1117/12.783801
Event: 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 2007, Chengdu, China

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).

Citation Download Citation

Yi Xie, Qiang Chen, and Fan Wu "Design of twin computer-generated holograms used for testing concave conic mirrors", Proc. SPIE 6723, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 67235S (17 January 2008); https://doi.org/10.1117/12.783801

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