Optical device detecting displacement information using a device

Details Optical device detecting displacement information using a device Optical device detecting displacement information using a device

1996-03-08

1998-05-19

Turner, Samuel A.

Optics: measuring and testing

Velocity or velocity/height measuring

With light detector

356356, 359278, G01B 902

Patent

active

057542821

ABSTRACT:
An optical device, and an apparatus for detecting displacement information of an object using the optical device, include an electrooptical device for shifting a frequency of an incident beam by applying a voltage thereto and an optical system for converging the beam at least in a plane including an application direction of the voltage and traveling direction of the beam, and for decreasing a degree of change of the diameter of the converged beam at least in the plane so as to reduce the diameter of the beam incident on the electrooptical device at least in the application direction.

REFERENCES:
patent: 4531195 (1985-07-01), Lee
patent: 5327222 (1994-07-01), Takamiya et al.
patent: 5483332 (1996-01-01), Takamiya et al.
patent: 5502466 (1996-03-01), Kato et al.
R. Foord et al., "A solid-state electro-optic phase modulator for laser Doppler anemometry," J. Phys. D: Appl. Phys., vol. 7, L36-L39 (1974).

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