Abstract
Use of synchronous phase detection in the conventional Ronchi test is discussed to measure a large amount of wavefront aberration or an aspheric wavefront. This method provides a simple but powerful tool for aspheric surface evaluation. By moving the Ronchi grating sideways, a periodic phase shift in the Ronchigram is introduced for synchronous phase detection. A theoretical interpretation of the Ronchigram and the procedure for an analysis are presented, and experimental results are shown.
© 1988 Optical Society of America
Full Article | PDF ArticleMore Like This
Toyohiko Yatagai
Appl. Opt. 23(20) 3676-3679 (1984)
Der-Shen Wan and Ding-Tin Lin
Appl. Opt. 29(22) 3255-3265 (1990)
Xinfeng Yu and Jiaqi Li
Appl. Opt. 62(19) 5057-5063 (2023)