Optics: measuring and testing – Crystal or gem examination
Reexamination Certificate
2008-12-23
2011-10-11
Geisel, Kara E (Department: 2877)
Optics: measuring and testing
Crystal or gem examination
Reexamination Certificate
active
08035807
ABSTRACT:
The present invention is an engraved gemstone viewer for viewing a smooth surface of a gemstone that has been micro or nano etched, engraved or embossed with an inscription such as an identification number. The gemstone is mounted on a piece of jewelry or can remain unmounted when received by the viewer. A source of light directs a light beam toward a magnifying lens coated with a reflection enhancing coating. The lens reflects the light beam along a path incident to the surface of the gemstone containing the inscription. The smooth gemstone surface specularly reflects the light beam along a path back toward the magnifying lens, which produces a viewable light image that reveals the inscription. The inscription is shown as a combination of darkened or lightened areas, lines and characters given the reduction or absence of light reflected, or highlighted by the reflection of light.
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Schoeckert Kurt
Wagner Randall M.
Geisel Kara E
GemEx Systems, Inc.
Godfrey & Kahn S.C.
Kees Nicholas A.
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