Quantitative measurement of &#934;140mm F/2 parabolic surface with Ronchi grating test method

Bai-ping Lei; Fan Wu; Chen-bo Zhou

doi:10.1117/12.828721

20 May 2009 Quantitative measurement of Φ140mm F/2 parabolic surface with Ronchi grating test method

Bai-ping Lei, Fan Wu, Chen-bo Zhou

Proceedings Volume 7283, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 72832O (2009) https://doi.org/10.1117/12.828721
Event: AOMATT 2008 - 4th International Symposium on Advanced Optical Manufacturing, 2008, Chengdu, Chengdu, China

Abstract

Ronchi grating test has been used widely to test optical surfaces in a qualitative way since it was contrived, while rarely to test the parabolic surface in a quantitative way. This paper discusses the application of Ronchi grating test to optical aspheric surfaces in a quantitative way on the base of self-made software which includes Ronchi null grating design, collection of Ronchi graph, data procession and so on. The whole system has been used to test a concave parabolic mirror with diameter 140mm and F number 2, and the result is approximately the same as that of the outcome of interferometer. The analysis software and test method establish a good foundation for the coming of quantitative measurement of big error of large-aperture aspheric surfaces.

Citation Download Citation

Bai-ping Lei, Fan Wu, and Chen-bo Zhou "Quantitative measurement of Φ140mm F/2 parabolic surface with Ronchi grating test method", Proc. SPIE 7283, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 72832O (20 May 2009); https://doi.org/10.1117/12.828721

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