公开(公告)号：AU4764096A

公开(公告)日：1996-08-14

申请号：AU4764096

申请日：1996-01-23

Applicant: UGTS INC

Inventor： VALENTE KEVIN A ,  REUTER ERNEST R ,  WAGNER RANDALL M

IPC: G01J3/50 ,  G01N21/87 ,  G01N19/02 ,  G01N21/00 ,  G01N21/25 ,  G01J3/40 ,  G01J3/28 ,  G01J3/46 ,  A44C17/00

Abstract: A device and method for grading gemstones. The device utilizes an band pass filter and detector array to obtain the spectral response of a complete image. The gemstone is illuminated in a way that provides for analysis of both reflected and transmitted light. The device utilizes multiple lighting angles to construct an composite image that is used to perform the grading of the gemstone. The device provides spectral photometric data for each individual pixel of the image, or any portion of the gemstone image.

公开(公告)号：AT266194T

公开(公告)日：2004-05-15

申请号：AT96903621

申请日：1996-01-23

Applicant: UGTS INC

Inventor： VALENTE KEVIN A ,  REUTER ERNEST R ,  WAGNER RANDALL M

IPC: G01J3/50 ,  G01N21/87 ,  G01N19/02 ,  G01N21/00 ,  G01N21/25 ,  G01J3/40 ,  G01J3/28 ,  G01J3/46 ,  A44C17/00

Abstract: A device and method for grading gemstones. The device utilizes an band pass filter and detector array to obtain the spectral response of a complete image. The gemstone is illuminated in a way that provides for analysis of both reflected and transmitted light. The device utilizes multiple lighting angles to construct an composite image that is used to perform the grading of the gemstone. The device provides spectral photometric data for each individual pixel of the image, or any portion of the gemstone image.

公开(公告)号：EP0805965A4

公开(公告)日：1998-04-15

申请号：EP96903621

申请日：1996-01-23

Applicant: UGTS INC

Inventor： VALENTE KEVIN A ,  REUTER ERNEST R ,  WAGNER RANDALL M

IPC: G01J3/50 ,  G01N21/87 ,  G01N19/02 ,  A44C17/00 ,  G01J3/28 ,  G01J3/40 ,  G01J3/46 ,  G01N21/00 ,  G01N21/25

CPC classification number: G01J3/50 ,  G01J3/0251 ,  G01J3/504 ,  G01J3/51 ,  G01N21/87

Abstract: The invention relates to evaluation of gemstones and other transparent specimens and in particular to color grading of gemstones. The device utilizes a band pass filter (23) which transmits light through lenses (32) onto the detector array (31) to obtain the spectral response of a complete image. The gemstone is illuminated with annular light ring (22), which receives light from a light source (18) located in the right half compartment (14), in a way that provides for analysis of both reflected and transmitted light. The device utilizes multiple lighting angles to construct a composite image that is used to perform the grading of the gemstones.