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])