Patent ID: 9128062
Filing Date: 2015-09-08
Classification: G01N

Abstract:
1. A device for producing a reproducible identification pattern of a polished gemstone comprising: a light source configured to direct a focused beam of light onto a gemstone orientated in a particular known manner to produce an output of the internal refraction and reflection characteristics of the gemstone including reflected light beams having particular locations, sizes and intensities; a platform having a planar top surface to allow the gemstone to be oriented with its table facing down and seated against the planar top surface of the platform, the platform being formed of a material that allows the focused beam of light to pass therethrough and contact the gemstone disposed on the planar top surface; a gimbal assembly for changing a position of the gemstone relative to the focused beam of light, wherein the gimbal assembly includes a first gimbal and a second gimbal, the first gimbal pivoting about a first axis and the second gimbal pivoting about a second axis that is perpendicular to the first axis, the platform being coupled to the second gimbal such that the platform extends across a center opening of the second gimbal, wherein the first gimbal is operatively coupled to a first motor by a first drive shaft for controllably rotating the first gimbal about the first axis and the second gimbal is operatively coupled to a second motor by a second drive shaft for controllably rotating the second gimbal about the second axis; and a device for recording the output in a manner to record at least one of the relative size and location of the reflected light beams.