Optics: measuring and testing – By light interference – Having light beams of different frequencies
Reexamination Certificate
2005-01-25
2005-01-25
Toatley, Jr., Gregory J. (Department: 2877)
Optics: measuring and testing
By light interference
Having light beams of different frequencies
Reexamination Certificate
active
06847455
ABSTRACT:
Displacement measuring interferometer systems and methods are disclosed. One or more acousto-optic modulators for receiving a laser light beam from a laser light source can be utilized to split the laser light beam into two or more laser light beams, while spatially separating frequencies thereof. One or more reflective mechanisms can be utilized to reflect one or more of the laser light beams back to the acousto-optic modulator. Interference of two or more of the laser light beams generally at the acousto-optic modulator can provide an interfered laser light beam thereof. A detector for receiving the interfered laser light beam can be utilized to provide interferometer measurement data.
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Beckwith John F.
Schmitz Tony L.
Connolly Patrick
Daubenspeck William C.
Gottlieb Paul A.
The United States of America as represented by the Department of
Toatley , Jr. Gregory J.
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