Wavefront analysis method involving multilateral...

Optics: measuring and testing – By light interference – Having wavefront division

Reexamination Certificate

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Reexamination Certificate

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07864340

ABSTRACT:
The method comprises positioning a diffraction grating with a two-dimensional meshing on the path of the beam to be analyzed and processing at least two interferograms of at least two different colors, each interferogram being obtained in a plane from two sub-beams with different diffraction orders. The invention can be used to analyze and correct divided wavefronts.

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“Lateral Shearing Interferometers” by M. V. Mantravadi, Optical Shop Testing, Second Edition, 1992, John Wiley & Sons, Inc.

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