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155 条记录 (耗时 0.016 秒)

    Method and apparatus for identifying gemstones, particularly diamonds
    51.
    发明授权
    Method and apparatus for identifying gemstones, particularly diamonds 失效
    用于识别GEMSTONES，特别是DIAMONDS的方法和装置

    公开(公告)号：US5118181A

    公开(公告)日：1992-06-02

    申请号：US599923

    申请日：1990-10-19

    申请人： Aharon Yifrach ,  Uri Neta

    发明人： Aharon Yifrach ,  Uri Neta

    IPC分类号： G01N21/87 ,  G01N33/38

    CPC分类号： G01N33/381 ,  G01N21/87 ,  G01N2021/6417

    摘要： A method of identifying a gemstone, particularly a diamond by: exciting the gemstone to cause it to emit luminescence radiation according to a luminescence spectrum unique to the respective gemstone, in which the luminescence intensity uniquely varies as a function of wavelength; measuring the level of the luminescence radiation at a plurality of preselected wavelengths of its luminescence spectrum; and utilizing the levels of the luminescence radiation at the preselected wavelenths to identify the respective gemstone and to distinguish it from other gemstones.

    Method and means of rapidly distnguishing a simulated diamond from natural diamond
    52.
    发明授权
    Method and means of rapidly distnguishing a simulated diamond from natural diamond 失效
    从天然钻石快速分割模拟钻石的方法和手段

    公开(公告)号：US4364677A

    公开(公告)日：1982-12-21

    申请号：US240126

    申请日：1981-03-03

    申请人： Leland E. Ashman

    发明人： Leland E. Ashman

    IPC分类号： G01N25/18 ,  G01N33/38

    CPC分类号： G01N25/18 ,  G01N33/381

    摘要： A simulated diamond such as crystalline cubic zirconia, which has optical properties very similar to natural diamond and so is difficult to distinguish optically from natural diamond, is distinguished from natural diamond by measuring its thermal conductivity which is significantly different from the thermal conductivity of natural diamond, by measuring the temperature of a heated probe held against the simulated diamond as an indication of the simulated diamond thermal conductivity. In a preferred embodiment of the present invention, a controlled amount of heat energy is generated at the probe and thereafter, while the probe is held against the simulated diamond, the temperature of the probe is detected as a measure of relative thermal conductivity of the simulated diamond to the natural diamond.

    摘要翻译： 与天然金刚石非常相似的光学性质的结晶立方氧化锆等模拟金刚石与天然金刚石难以区分，与天然金刚石的不同之处在于通过测量其与天然金刚石的热导率显着不同的热导率 通过测量保持在模拟金刚石上的加热探针的温度作为模拟金刚石热导率的指示。 在本发明的优选实施例中，在探针处产生受控量的热能，此后，当探针被保持在模拟金刚石上时，探测器的温度被检测为模拟的 钻石到天然钻石。

    Method of determining the properties of a jewelery stone and apparatus for this method
    53.
    发明授权
    Method of determining the properties of a jewelery stone and apparatus for this method 失效
    确定这种方法的珠宝石的特性的方法和装置

    公开(公告)号：US3858979A

    公开(公告)日：1975-01-07

    申请号：US29241772

    申请日：1972-09-26

    申请人： COLORANT SCHMUCKSTEIN GMBH

    发明人： ELBE MAXIMO

    IPC分类号： A44C17/00 ,  G01N21/87 ,  G01N33/38 ,  G01N21/22

    CPC分类号： G01N33/381 ,  G01N21/87

    摘要： A technique is described for objectively determining the overall quality of a precious cut stone. A beam of parallel light rays is directed along the optical axis perpendicularly against a main exposed surface of the stone while the stone rotates about the optical axis. The principal reflected rays from the rotating stone are scanned in a spiral path by rotating a light-sensitive detector about a second axis passing through the main surface of the stone perpendicular to the optical axis. Facilities are provided for (1) displaying the logarithm of the intensity of the respective detected rays and (2) counting the number of detected reflected rays whose intensity amplitude exceeds a predetermined threshold.

    摘要翻译： 描述了一种用于客观地确定珍贵切割石头的整体质量的技术。 当石头围绕光轴旋转时，平行光束沿着光轴垂直地指向石头的主暴露表面。 旋转的石头的主要反射光线通过旋转感光探测器围绕通过石英主表面垂直于光轴的第二轴旋转扫描。 提供以下设施：（1）显示各检测光线强度的对数，（2）对强度振幅超过预定阈值的检测反射光线的数量进行计数。