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1. 发明申请

US20060196858A1 METHOD AND SYSTEM FOR LASER MARKING IN THE VOLUME OF GEMSTONES SUCH AS DIAMONDS 有权
标题翻译：用于激光标记的方法和系统，如石墨等
公开(公告)号：US20060196858A1
公开(公告)日：2006-09-07
申请号：US11161917
申请日：2005-08-22
申请人： Wes Barron , Bruno Bourliaguet , Marc Levesque , Alain Cournoyer , Daniel Cantin , Yves Champagne
发明人： Wes Barron , Bruno Bourliaguet , Marc Levesque , Alain Cournoyer , Daniel Cantin , Yves Champagne
IPC分类号： B23K26/00
CPC分类号： B23K26/03 , A44C17/00 , A44C27/00 , B23K26/032 , B23K26/361 , B23K2101/007 , B41M5/24 , B42D25/43 , B42D2035/44 , B44F1/06 , C04B41/0036 , C04B41/009 , G01N21/87 , C04B14/00
摘要： A method and an apparatus for laser marking indicia in the volume of gemstones such as diamonds, the indicia being made up of a plurality of microscopic dot-shaped marks whose build-up can be initiated by exposing naturally-occurring internal defects or impurities in the volume of a gemstone to a tightly focused train of laser pulses. Authentication data is encoded in the gemstone from the relative spatial arrangement of the dot-shaped marks that form the indicium. Taking advantage of the presence of otherwise invisible defects in the gemstone allows for inscribing indicia with laser pulses carrying energies substantially lower than the threshold energy required for inscribing in the volume of a perfect gemstone material. The marking process is then much less susceptible to inflict damages to the surface of the gemstone, and the marking can be performed using a broad variety of femtosecond laser systems. The dot-shaped marks engraved at a depth below the surface of a gemstone can be made undetectable with the unaided eye or with a loupe by limiting their individual size to a few micrometres, while devising indicia made up of only a few marks. As a result, the marking does not detract from the appearance and value of the gemstone. The procedure for laser marking accounts for the random spatial distribution of the defects present in natural gemstones as well as for their strongly localized character. The presence of an indicium can be detected by using a dedicated optical reader that can be afforded by every jewellery store.
摘要翻译：一种用于在诸如钻石的宝石体积中的激光标记的方法和装置，该标记由多个微小的点状标记组成，其积聚可以通过暴露天然存在的内部缺陷或杂质一个宝石的体积到一个紧密集中的激光脉冲序列。从形成标记的点状标记的相对空间排列，认证数据被编码在宝石中。利用宝石中其他不可见缺陷的存在，允许用激光脉冲刻印标记，该激光脉冲承载的能量大大低于在完美宝石材料的体积上所需的阈值能量。然后，标记过程不太可能对宝石表面造成损害，并且标记可以使用各种各样的飞秒激光系统进行。雕刻在宝石表面下方的深度上的点状标记可以通过将其个体尺寸限制在几微米之内而与肉眼无关，或者通过将其个体尺寸限制在几微米之内，同时设计仅由几个标记构成的标记。因此，标记不会降低宝石的外观和价值。激光标记的程序解释了天然宝石中存在的缺陷的随机空间分布以及它们的强烈局部化特征。可以通过使用可由每个珠宝店提供的专用光学读取器来检测标记的存在。

2. 发明授权

US07284396B2 Method and system for laser marking in the volume of gemstones such as diamonds 有权
标题翻译：用于激光打标的方法和系统中的宝石体积如钻石
公开(公告)号：US07284396B2
公开(公告)日：2007-10-23
申请号：US11161917
申请日：2005-08-22
申请人： Wes Barron , Bruno Bourliaguet , Marc Levesque , Alain Cournoyer , Daniel Cantin , Yves Champagne
发明人： Wes Barron , Bruno Bourliaguet , Marc Levesque , Alain Cournoyer , Daniel Cantin , Yves Champagne
IPC分类号： A44C17/00 , B23K26/40 , B23K26/03
CPC分类号： B23K26/03 , A44C17/00 , A44C27/00 , B23K26/032 , B23K26/361 , B23K2101/007 , B41M5/24 , B42D25/43 , B42D2035/44 , B44F1/06 , C04B41/0036 , C04B41/009 , G01N21/87 , C04B14/00
摘要： A method and an apparatus for laser marking indicia in the volume of gemstones such as diamonds, the indicia being made up of a plurality of microscopic dot-shaped marks whose build-up can be initiated by exposing naturally-occurring internal defects or impurities in the volume of a gemstone to a tightly focused train of laser pulses. Authentication data is encoded in the gemstone from the relative spatial arrangement of the dot-shaped marks that form the indicium. Taking advantage of the presence of otherwise invisible defects in the gemstone allows for inscribing indicia with laser pulses carrying energies substantially lower than the threshold energy required for inscribing in the volume of a perfect gemstone material. The marking process is then much less susceptible to inflict damages to the surface of the gemstone, and the marking can be performed using a broad variety of femtosecond laser systems. The dot-shaped marks engraved at a depth below the surface of a gemstone can be made undetectable with the unaided eye or with a loupe by limiting their individual size to a few micrometers, while devising indicia made up of only a few marks. As a result, the marking does not detract from the appearance and value of the gemstone. The procedure for laser marking accounts for the random spatial distribution of the defects present in natural gemstones as well as for their strongly localized character. The presence of an indicium can be detected by using a dedicated optical reader that can be afforded by every jewellery store.
摘要翻译：一种用于在诸如钻石的宝石体积中的激光标记的方法和装置，该标记由多个微小的点状标记组成，其积聚可以通过暴露天然存在的内部缺陷或杂质而引发一个宝石的体积到一个紧密集中的激光脉冲序列。从形成标记的点状标记的相对空间排列，认证数据被编码在宝石中。利用宝石中其他不可见缺陷的存在，允许用激光脉冲刻印标记，该激光脉冲承载的能量大大低于在完美宝石材料的体积上所需的阈值能量。然后，标记过程不太可能对宝石表面造成损害，并且标记可以使用各种各样的飞秒激光系统进行。雕刻在宝石表面下方的深度上的点状标记可以通过将其个体尺寸限制在几微米之内而与肉眼无关，或者通过将其个体尺寸限制在几微米之内，同时设计仅由几个标记构成的标记。因此，标记不会降低宝石的外观和价值。激光标记的程序解释了天然宝石中存在的缺陷的随机空间分布以及它们的强烈局部化特征。可以通过使用可由每个珠宝店提供的专用光学读取器来检测标记的存在。

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