Optics: measuring and testing – By light interference – For dimensional measurement
Reexamination Certificate
2005-04-19
2005-04-19
Toatler, Jr., Gregory J. (Department: 2877)
Optics: measuring and testing
By light interference
For dimensional measurement
C356S477000
Reexamination Certificate
active
06882433
ABSTRACT:
An expanding measuring beam is inserted into a cavity of a frequency-scanning interferometer. The expanding measuring beam encounters non-specular (diffuse) reference and object surfaces so that the reflected light can be imaged with an imaging system of reduced dimension. The compact interferometer is adaptable to a variety of applications. For example, the compact interferometer can be incorporated into a sensor of a multi-stage measuring instrument or into a handheld imager.
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Faklis Dean
Marron Joseph C.
Connolly Patrick
Harter, Secrest & Emery LLP.
Lightgage, Inc.
Ryan, Esq. Thomas B.
Shaw Esq. Brian B.
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