Optics: measuring and testing – By light interference – Having light beams of different frequencies
Reexamination Certificate
2006-10-24
2006-10-24
Lauchman, Layla G. (Department: 2877)
Optics: measuring and testing
By light interference
Having light beams of different frequencies
C356S336000, C356S028500
Reexamination Certificate
active
07126694
ABSTRACT:
A compact computer-controlled fully-packaged apparatus providing reliable multi-dimensional characterization of spherical objects in a field environment is disclosed. The apparatus has a rugged, free-space, integrated optical system with up to three lasers that generate at a laser-specific wavelength the coherent light with substantially high pointing stability. The apparatus also has a receiver. Each laser generates a pair of beams crossing each other at a predetermined laser specific angle to form a sample volume such that beams from all lasers coincide in the same spot. The receiver has photodetectors to sense the light scattered from a spherical object. Three photodetectors measure a size and one of the three photodetectors measures a first velocity component, a fourth photodetector measures a second velocity component, and a fifth photodetector measures a third velocity component of the spherical object. The velocity components are orthogonal to each other.
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Anderson Denise B
Artium Technologies, Inc.
Lauchman Layla G.
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