Title:
ダイヤモンドのカラーを測定しかつ分析するためのシステム、装置及び方法
Document Type and Number:
Japanese Patent JP3790827
Kind Code:
B2
Abstract:
The present invention comprises systems, apparatuses and methods for measuring and analyzing gem color in a way which reliably and consistently simulates visual color analysis methodology. The preferred system embodiment of the present invention comprises several aspects, including the use of daylight approximating lamps, such as daylight-approximating fluorescent tubes or halogen lamp boosted with a filter to approximate daylight, and a light detector which directs light of a specific angle such that the system approximates visual analysis methodology. In the case of diamond analysis, in one embodiment, the system of the invention includes three major elements: a daylight-approximating light source that illuminates the pavilion side of the diamond, a light detector which detects light coming out at a specific angle from the pavilion side of the diamond, and an optical measurement device which measures the light detected by the light detector. In a preferred embodiment of the system, the daylight-approximating light source illuminates the pavilion side of the diamond through a diffuser. In another preferred embodiment, the light detector detects light which is coming from a rotating diamond.
Inventors:
De Jong, Peter
Reverald Geuertz
Reverald Geuertz
Application Number:
JP2001560659A
Publication Date:
June 28, 2006
Filing Date:
February 06, 2001
Export Citation:
Assignee:
Gemological Institute of America, Inc.
International Classes:
G01J3/50; G01N21/87; G02B27/00
Domestic Patent References:
| JP58000728A | ||||
| JP57171249A | ||||
| JP49123384A | ||||
| JP11352068A | ||||
| JP2002516992A |
Foreign References:
| WO1999061890A1 | ||||
| US5615005 | ||||
| US4291975 |
Attorney, Agent or Firm:
Takenori Hiroe
Kenichi Uno
Kenichi Uno