发明名称 |
LASER MARKING SYSTEM FOR GEMSTONES AND METHOD OF AUTHENTICATING MARKING |
摘要 |
A laser microinscribing system includes a Q-switched Nd: YLF laser (1) with a harmonic converter producing an output of about 530 nm, an optical system including a focussing lens, a gemstone mounting holder (144) that is displaceable along three axes for moving a workpiece (11) such as a gemstone with respect to the optical system so that laser energy is presented to desired positions, an imaging system for viewing the gemstone from a plurality of viewpoints including a top CCD (28) and a side CCD (32), a processor controlling the position of the holder (144) based on marking instructions and a predetermined program, and a storage system (156) for storing information relating to images of a plurality of workpieces. A rigid frame supports the laser (1), the optical system and the holder (144) to increase immunity to vibrational misalignments. A secure certificate of authenticity of a marked workpiece (11) is preferably provided having an image of the marking as well as the outline of a girdle of the gemstone. |
申请公布号 |
CA2238612(C) |
申请公布日期 |
2008.04.15 |
申请号 |
CA19962238612 |
申请日期 |
1996.11.14 |
申请人 |
LAZARE KAPLAN INTERNATIONAL, INC. |
发明人 |
GURVICH, LEONID;ANNER, ODED;SHACHRAI, AVIGDOR;KAPLAN, GEORGE R. |
分类号 |
A44C27/00;B23K26/04;B23K26/00;B23K26/02;B23K26/03;B23K26/06;B23K26/08;B23K26/10;B23K26/18;B25H7/04;B44C1/22;B44F1/12;G01N21/87;G06K1/02;G06K1/12;H01R13/658 |
主分类号 |
A44C27/00 |
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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