Optics: measuring and testing – By light interference – For dimensional measurement
Reexamination Certificate
2007-08-14
2007-08-14
Turner, Samuel A. (Department: 2877)
Optics: measuring and testing
By light interference
For dimensional measurement
C356S446000
Reexamination Certificate
active
10788094
ABSTRACT:
A far-field measurement instrument has multiple imaging lenses cut into a pentagon shape and arranged in geodesic spherical configuration with a common field of view focused on the source of the scattered light to be measured. Aspheric lenses are used to facilitate collimation of large incident angles of scattered light. A measurement module, such as a camera, is used behind each lens. The measurement module may consist of an interferometer or Shack-Hartman wavefront sensor, thereby enabling the measurement of both intensity and phase of the scattered light.
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Hayes & Soloway P.C.
Turner Samuel A.
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