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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 7, Iss. 7 — Jul. 1, 2009
  • pp: 590–592

Quantitative measurement of Φ630 mm F/1.34 parabolic surfaces with Ronchi grating test method

Baiping Lei, Fan Wu, and Chenbo Zhou  »View Author Affiliations


Chinese Optics Letters, Vol. 7, Issue 7, pp. 590-592 (2009)


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Abstract

The Ronchi grating is applied to measure the large-aperture aspheric surfaces in a quantitative way on the basis of self-made software which includes Ronchi null grating design, collection of Ronchi graph, and data processing. The measured concave parabolic mirror has a diameter of 630 mm and an F number of 1.34. The measurement result is approximately the same as that of the ZYGO interferometer. This analysis software and test method establish a good foundation for the quantitative measurement of the big error about the large-aperture aspheric surfaces of the next generation telescope.

© 2009 Chinese Optics Letters

OCIS Codes
(100.1160) Image processing : Analog optical image processing
(110.6770) Imaging systems : Telescopes
(120.6650) Instrumentation, measurement, and metrology : Surface measurements, figure
(220.1250) Optical design and fabrication : Aspherics

Citation
Baiping Lei, Fan Wu, and Chenbo Zhou, "Quantitative measurement of Φ630 mm F/1.34 parabolic surfaces with Ronchi grating test method," Chin. Opt. Lett. 7, 590-592 (2009)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-7-7-590

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