The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 05, 2024
Filed:
Feb. 11, 2022
Applicant:
Gemological Institute of America, Inc. (Gia), Carlsbad, CA (US);
Inventor:
Hiroshi Takahashi, Fort Lee, NJ (US);
Assignee:
Gemological Institute of America, Inc. (GIA), Carlsbad, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06T 7/90 (2017.01); G01N 21/25 (2006.01); G01N 21/87 (2006.01); G01N 33/38 (2006.01); G01N 21/88 (2006.01);
U.S. Cl.
CPC ...
G01N 21/87 (2013.01); G01N 21/255 (2013.01); G01N 33/381 (2013.01); G06T 7/90 (2017.01); G01N 21/88 (2013.01); G01N 2201/061 (2013.01); G01N 2201/0631 (2013.01); G01N 2201/0634 (2013.01); G01N 2201/0638 (2013.01); G01N 2201/065 (2013.01);
Abstract
Provided herein is an apparatus for assessing a color characteristic of a gemstone. The apparatus comprises an optically opaque platform for supporting a sample gemstone to be assessed, a daylight-approximating light source to provide uniform illumination to the gemstone, an image capturing component, and a telecentric lens positioned to provide an image of the illuminated gemstone to the image capturing component. Also provided are methods of color analysis based on images collected using such an apparatus.