Abstract: A method of determining the position of inclusions in a gemstone, comprising: (a) placing the gemstone within a material having a refractive index within 0.5, optionally 0.2 or 0.1, of that of the gemstone; (b) illuminating the gemstone and imaging the illuminated gemstone; and (c) determining the position of inclusions based on images of the inclusions in the images.
Type:
Grant
Filed:
August 21, 2006
Date of Patent:
January 17, 2012
Assignee:
Galatea Ltd.
Inventors:
Haim Shlezinger, Ran Ziskind, Adam Devir, Dan Sheffer
Abstract: An apparatus for determining location of at least one inclusion in a gemstone having a first refractive index, comprising: a container adapted for containing a material having a second refractive index, a holder operative to support a gemstone in the material when the container contains the material; an illuminator positioned and adapted to illuminate said gemstone when disposed within said material in said container, with illumination at which said gemstone and said material have their respective first and second indices; a detector that detects illumination from the illuminated gemstone and said material and produces signals responsive thereto; a controller that receives the signals and is operative to determine a location of an inclusion in the gemstone based on the signals; and a system, operative to reduce the presence within said material, at least when the gemstone is disposed therein, of any substance other than inclusions, having a third refractive index.
Type:
Grant
Filed:
February 21, 2008
Date of Patent:
September 21, 2010
Assignee:
Galatea Ltd.
Inventors:
Haim Shlezinger, Ran Ziskind, Gabi Horowitz, Michael Eroshov, Adam Devir, Dan Sheffer
Abstract: A method of determining the position of inclusions in a gemstone, comprising: (a) placing the gemstone within a material having a refractive index within 0.5, optionally 0.2 or 0. 1, of that of the gemstone; (b) illuminating the gemstone and imaging the illuminated gemstone; and (c) determining the position of inclusions based on images of the inclusions in the images.
Type:
Application
Filed:
August 21, 2006
Publication date:
June 11, 2009
Applicant:
Galatea Ltd.
Inventors:
Haim Shlezinger, Ran Ziskind, Adam Devir, Dan Sheffer
Abstract: An apparatus for determining location of at least one inclusion in a gemstone having a first refractive index, comprising: a container adapted for containing a material having a second refractive index, a holder operative to support a gemstone in the material when the container contains the material; an illuminator positioned and adapted to illuminate said gemstone when disposed within said material in said container, with illumination at which said gemstone and said material have their respective first and second indices; a detector that detects illumination from the illuminated gemstone and said material and produces signals responsive thereto; a controller that receives the signals and is operative to determine a location of an inclusion in the gemstone based on the signals; and a system, operative to reduce the presence within said material, at least when the gemstone is disposed therein, of any substance other than inclusions, having a third refractive index.
Type:
Application
Filed:
February 21, 2008
Publication date:
September 25, 2008
Applicant:
Galatea Ltd.
Inventors:
Haim Shlezinger, Ran Ziskind, Gabi Horowitz, Michael Eroshov, Adam Devir, Dan Sheffer