Optics: measuring and testing – Crystal or gem examination
Patent
1993-10-18
1995-06-06
Evans, F. L.
Optics: measuring and testing
Crystal or gem examination
G01N 2187
Patent
active
054227119
ABSTRACT:
The present invention provides an improved apparatus for viewing gems that provides a magnified image simultaneously viewable by several individuals, and which allows a customer to manipulate the gem while restricting the customer's access to the gem and without any physical contact with the gem by the customer. The apparatus is comprised of a horizontal base with two opposing panels. A television camera with a magnifying lens extends from one upright panel to provide a viewing region immediately above a receiving placement zone on the base. A light source is provided adjacent to the camera on the same upright panel. A background screen is located on the opposing upright panel. A pair of opposing elongate fingers are pivotally and slidably mounted on a post that extends from the horizontal base adjacent the placement zone. The opposing jaws are configured to grasp a gem placed in the placement zone, raise the gem to the viewing region, and manipulate the gem in the viewing region as desired for viewing of the gem. A television monitor displays the image. The device is particularly applicable in the retail sales of jewelry.
REFERENCES:
patent: 1700496 (1929-01-01), Heitzler
patent: 1700497 (1929-01-01), Heitzler
patent: 2742813 (1956-04-01), Zeininger
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