Moire microscope

Optics: measuring and testing – Range or remote distance finding – With photodetection

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350508, 350527, 356376, G02B 2136

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active

045779406

ABSTRACT:
A moire microscope comprises an objective lens, a collimating lens, and a pair of spaced-apart gratings arrayed along an optic axis and adapted for providing a magnified moire deflectogram of a phase object. The microscope provides a simple apparatus for preparing a map of optical thickness gradients, from which quantitative data concerning the object can be computed.

REFERENCES:
patent: 4459027 (1984-07-01), Kafri et al.
R. W. Harrison, "Optical Flatness Technique . . . ", IBM Tech. Dis. Bull., vol. 12, No. 10, Mar., 1970, p. 1643.
F. A. Jenkins & H. E. White, Fundamentals of Optics, 4th Edition, New York, 1976, pp. 602-607.
F. Zernike, Z. Tech. Phys. 16, p. 454 (1935).
O. Kafri, "Noncoherent Method for Mapping Phase Objects", Optics Letters 5, 555, (1980).

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