Optical gem analyzer

Details Optical gem analyzer Optical gem analyzer

1979-11-05

1981-03-31

Rosenberger, R. A.

Optics: measuring and testing

Crystal or gem examination

356418, G01J 350

Patent

active

042590116

ABSTRACT:
Quantitative data concerning a gem such as a diamond is obtained by irradiating the gem with wide spectrum light. The internal reflections and refractions of this light are picked up and passed through different filters, the output intensity of light from various filters being compared to a reference output from a reference filter. The output data from the examined light provides information as to the quality of the gem.

REFERENCES:
patent: 3794424 (1974-02-01), Eickhorst et al.
patent: 4076424 (1978-02-01), Ida

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