发明名称 |
Method and apparatus for classifying diamonds |
摘要 |
<p>In order to classify a diamond as natural or synthetic, a first signal is derived dependent upon the intensity of ultra-violet radiation transmitted by the diamond at 254nm, and a second signal is derived dependent upon the intensity of radiation transmitted by the diamond at 365nm and the diamond is classified as being definitely natural if the first signal is substantially less than the second signal. <IMAGE></p> |
申请公布号 |
EP0811836(A2) |
申请公布日期 |
1997.12.10 |
申请号 |
EP19970114694 |
申请日期 |
1993.05.19 |
申请人 |
GERSAN ESTABLISHMENT |
发明人 |
SMITH, MARTIN PHILLIP;WELBOURN, CHRISTOPHER MARK |
分类号 |
G01N21/87;G01N21/25;G01N21/31;G01N21/33;(IPC1-7):G01N21/87 |
主分类号 |
G01N21/87 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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