Interferometers for measuring changes in optical beam direction

Details Interferometers for measuring changes in optical beam direction Interferometers for measuring changes in optical beam direction

2005-07-12

2005-07-12

Lee, Andrew H. (Department: 2877)

Optics: measuring and testing

By light interference

Having shearing

C356S510000

Reexamination Certificate

active

06917432

ABSTRACT:
Apparatus for measuring angular changes in the direction of travel of a light beam comprising at least one beam shearing assembly for separating, preferably orthogonally polarized, components of the light beam and introducing a lateral shear between them. An analyzer operates on the components to provide them with a common polarization state. A lens focuses the commonly polarized components of the light beam to a spot in a detector plane, and a detector operates to generate an electrical signal having a phase that varies in accordance with the angular change of the light beam in at least one plane. Electronic means receive the electrical signal, determines the phase therefrom, and converts the phase to the angular change in the direction of travel of the light beam.

REFERENCES:
patent: 4227807 (1980-10-01), Pond et al.
patent: 4395123 (1983-07-01), Minott
patent: 4504147 (1985-03-01), Huang
patent: 4681448 (1987-07-01), Wertz
patent: 4714339 (1987-12-01), Lau et al.
patent: 4746216 (1988-05-01), Sommargren
patent: 4883357 (1989-11-01), Zanoni
patent: 4915502 (1990-04-01), Brierley
patent: 4969744 (1990-11-01), Ordell
patent: 5064289 (1991-11-01), Bockman
patent: 5128798 (1992-07-01), Bowen et al.
patent: 5245408 (1993-09-01), Cohen
patent: 5764351 (1998-06-01), Rheme
patent: 5969817 (1999-10-01), Ohsawa
patent: 6075598 (2000-06-01), Kauppinen
International Search Report mailed on Feb. 26, 2003 in PCT/US02/31147.

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