Optics: measuring and testing – Crystal or gem examination
Patent
1995-01-23
1997-03-25
Gonzalez, Frank
Optics: measuring and testing
Crystal or gem examination
356425, G01W 2100, G01J 346, G01N 2187
Patent
active
056150059
ABSTRACT:
A device and method for grading gemstones. The device utilizes an band pass filter and detector array to obtain the spectral response of a complete image. The gemstone is illuminated in a way that provides for analysis of both reflected and transmitted light. The device utilizes multiple lighting angles to construct an composite image that is used to perform the grading of the gemstone. The device provides spectral photometric data for each individual pixel of the image, or any portion of the gemstone image.
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Reuter Ernest R.
Valente Kevin A.
Wagner Randall M.
Eisenberg Jason D.
Gonzalez Frank
UGTS, Inc.
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