发明名称 |
LASER MARKING SYSTEM FOR GEMSTONES AND METHOD OF AUTHENTICATING MARKING |
摘要 |
<p>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 focusing 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 gemston e 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 a nd 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), t he optical system and the holder (144) to increase immunity to vibrational misalignment s. A secure certificate of authenticity of a marked workpiece (11) is preferably provide d having an image of the marking as well as the outline of a girdle of the gemstone.</p> |
申请公布号 |
CA2621225(C) |
申请公布日期 |
2009.11.03 |
申请号 |
CA19962621225 |
申请日期 |
1996.11.14 |
申请人 |
LAZARE KAPLAN INTERNATIONAL, INC. |
发明人 |
SHACHRAI, AVIGDOR;GURVICH, LEONID;ANNER, ODED;KAPLAN, GEORGE R. |
分类号 |
B42D25/435;A44C17/00;G06K1/12;G07C11/00 |
主分类号 |
B42D25/435 |
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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