Holographic interferometer

Details Holographic interferometer Holographic interferometer

1987-09-11

1989-03-14

Willis, Davis L.

Optics: measuring and testing

By particle light scattering

With photocell detection

356360, 356401, G01B 902

Patent

active

048120421

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: 3871769 (1975-03-01), Engel et al.

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