Optics: measuring and testing – Velocity or velocity/height measuring – With light detector
Patent
1998-02-11
2000-03-07
Buczinski, Stephen C.
Optics: measuring and testing
Velocity or velocity/height measuring
With light detector
356349, 356356, 359256, 359279, 359323, G01P 336, G01B 902, G01B 1102, G02F 100
Patent
active
060347619
ABSTRACT:
An apparatus for measuring displacement information of an object. The apparatus has a light source emitting a light beam, an electro-optical crystal member, a voltage applying system for imparting a predetermined frequency difference between light beams passing through two different areas in the electro-optical crystal member, and a light receiving system for receiving scattered light from the object to which the two light beams emergent from the electro-optical crystal member have been projected. The electro-optical crystal member is disposed so that a light beam from the light source may partly enter the two different areas to form the two light beams to which the predetermined frequency difference is imparted. The displacement information of the object is obtained from the scattered light received by the light receiving system.
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Buczinski Stephen C.
Canon Kabushika Kaisha
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