Fringe Interpreting for Aspheric Surfce Testing

Tsumura Norimichi, Takashi Yamamoto, Kunikazu Ohnishi, Syunsuke Yokozeki

Osaka University

JSPE 57(1991) 646-651

Abstract
In the usual method of fringe analysis for aspheric surface, the difference between the test surface and the reference surface is measured by the order of fringes. But, in the method, the error can't be avoided from the approximate interpretation. By simulating the error using a certain aspheric surface, it is shown that the error can't be ignored. Then, a new method is proposed which doesn't contain the error from the approximate interpretation. In this new method, fringe density which can be obtained from interference fringe's figure is introduced as a data. This new method doesn't measures the difference between test surface and reference surface, but measures the test surface directly.


Full paper
[PDF] (reprint) (in Japanese])


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