NASA NTRS · 20080004442
Coherent gradient sensing method and system for measuring surface curvature
Abstract
A system and method for determining a curvature of a specularly reflective surface based on optical interference. Two optical gratings are used to produce a spatial displacement in an interference field of two different diffraction components produced by one grating from different diffraction components produced by another grating. Thus, the curvature of the surface can be determined.
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Rosakis, Ares J., Singh, Ramen P., Kolawa, Elizabeth, Moore, Jr., Nicholas R.. 2000-02-29. Coherent gradient sensing method and system for measuring surface curvature. https://ntrs.nasa.gov/citations/20080004442
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