Holographic interferometer

Details Holographic interferometer Holographic interferometer

1986-08-20

1988-07-19

Willis, Davis L.

Optics: measuring and testing

By particle light scattering

With photocell detection

356360, G01B 9021

Patent

active

047580895

ABSTRACT:
A holographic interferometer comprising a source of laser beams, a condenser lens for converging a laser beam supplied from said laser-beam source, a pinhole which allows the passage of said converged laser beam, a collimator lens having a focal point which lies on said pinhole, a beam splitter disposed in an inclined manner between said pinhole and said collimator lens, a spacial filter disposed on the optical axis of a light reflected from said beam splitter and at an optically conjugate position relative to said pinhole, and a hologram standard disposed between said spacial filter and said beam splitter.

REFERENCES:
patent: 3642374 (1972-02-01), Matsumoto
patent: 4396289 (1983-08-01), Fantone
Hussmann, "A Holographic Interferometer for Measuring Radiation Energy Deposition Profiles in Transparent Liquids", Applied Optics, vol. 10, No. 1, pp. 182-186, 1/71.
Akira Ono and James C. Wyant, "Aspherical Mirror Testing Using A CGH with Small Errors", Feb. 15, 1985/vol. 24, No. 4, Applied Optics.

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