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US 3,944,368 AGranted
Apparatus for color analysis of precious stones
OwnerCasper R. Beesleyinventor
Life of this patent
Estimating the term…
Abstract
A light device for analyzing precious stone body color, comprising a diffused light source in conjunction with indirectly reflected light. Also, method of analyzing precious stones for body color.
Claims12
An apparatus for examining a precious stone, comprising:
- a. an envelope structure defining an interior space viewable from without said envelope;
- b. a light source disposed at said interior space;
- c. a white transparent light diffusing means disposed within said interior space;
- d. means for locating said precious stone within said interior space adjacent to said light diffusing means such that said stone is in light receiving relationship with said light diffusing means, and said light diffusing means being disposed between said precious stone and said light source, said stone being viewable from a point outside said interior space;
- and
- e. means for reflecting light from said light source, and reflecting means being disposed such that said stone is located between said reflecting means and said viewing point, and being arranged so that at least a portion of the light being reflected by said reflecting means passes from said light source to said viewing point without passing through said light diffusing means.
3 more elements
Dependencies are inferred from the claim text.