Optics: measuring and testing – By light interference – For dimensional measurement
Reexamination Certificate
2005-08-23
2005-08-23
Turner, Samuel A. (Department: 2877)
Optics: measuring and testing
By light interference
For dimensional measurement
Reexamination Certificate
active
06934037
ABSTRACT:
A method for determining relative movement between an optical navigation device and a navigation terrain includes generating two overlapping coherent optical beams, and generating a pattern of interference fringes between the two overlapping optical beams. The method further includes illuminating a surface portion of the navigation terrain with the pattern of interference fringes, imaging a fringe-illuminated surface portion, and generating a pattern of signals in response to the imaged fringe-illuminated surface portion.
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DePue Marshall T.
Schroeder Dale W.
Xie Tong
Agilent Technologie,s Inc.
Turner Samuel A.
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