Study on Improving Precision of Asphcric Surfaces Test by Computer-generated Hologram

[in Chinese]; [in Chinese]; [in Chinese]; [in Chinese]; [in Chinese]; [in Chinese]

Journals >Chinese Journal of Lasers >Volume 23 >Issue 1 >Page 52 > Article

Chinese Journal of Lasers
Vol. 23, Issue 1, 52 (1996)

Study on Improving Precision of Asphcric Surfaces Test by Computer-generated Hologram

[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]

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[in Chinese]

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[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese]. Study on Improving Precision of Asphcric Surfaces Test by Computer-generated Hologram[J]. Chinese Journal of Lasers, 1996, 23(1): 52 Copy Citation Text

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Abstract

In this paper,the principle of CGH (computer-generated-hologram) phase detecting interferometry is briefly discussed.A new absolute measuring method with CGH for testing high precision aspheric surfaces is presented.The measuring accuracy can be up to λ/50.

Keywords

absolute measuring method aspherical surface phase detecting technique CGH(computer-generated-hologram)

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