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Proceedings Paper

Optical test of aspheric elements using instantaneous wedge plate phase shifting lateral shearing interferometer
Author(s): Jae-Bong Song; Yoon-Woo Lee; In-Won Lee; Jong Ung Lee
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Paper Abstract

In the optical testing of aspheric lenses, the phase shifting lateral shearing interferometer has attracted considerable attention because of its advantage in alignment work. And many phase shifting lateral shearing interferometers were developed. But all of them are time delayed methods which have the time lag between the measurements. When air turbulence and vibration is present, this time lag can be onerous error sources. If we measure all the required interferograms for the phase shifting method at the same time, there should be no time leg. We present a simple instantaneous phase shifting lateral shearing interferometer using a wedge plate and two identical transmission gratings and reconstruct the wavefront error of measured instantaneous phase shifting lateral shearing interferograms.

Paper Details

Date Published: 10 February 2005
PDF: 10 pages
Proc. SPIE 5638, Optical Design and Testing II, (10 February 2005); doi: 10.1117/12.576622
Show Author Affiliations
Jae-Bong Song, Korea Research Institute of Standards and Science (South Korea)
Yoon-Woo Lee, Korea Research Institute of Standards and Science (South Korea)
In-Won Lee, Korea Research Institute of Standards and Science (South Korea)
Jong Ung Lee, Cheongju Univ. (South Korea)


Published in SPIE Proceedings Vol. 5638:
Optical Design and Testing II
Yongtian Wang; Zhicheng Weng; Shenghua Ye; Jose M. Sasian, Editor(s)

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