公开(公告)号：US5351117A

公开(公告)日：1994-09-27

申请号：US31585

申请日：1993-03-15

申请人： Andrew D. G. Stewart ,  Robin W. Smith ,  Martin P. Smith ,  Martin Cooper ,  Christopher M. Welbourn ,  Paul M. Spear

发明人： Andrew D. G. Stewart ,  Robin W. Smith ,  Martin P. Smith ,  Martin Cooper ,  Christopher M. Welbourn ,  Paul M. Spear

IPC分类号： B07C5/342 ,  G01N21/62 ,  G01N21/63 ,  G01N21/64 ,  G01N21/65 ,  G01N21/84 ,  G01N21/85 ,  G01N21/86 ,  G01N23/223 ,  G01S17/06 ,  G01N21/87

CPC分类号： B07C5/3425 ,  B07C5/3427 ,  B07C5/366 ,  G01N21/64 ,  G01N21/65 ,  G01N21/87 ,  G01N23/223 ,  G01S17/06 ,  G01S7/497 ,  G01N2021/1734 ,  G01N2021/1789 ,  G01N2021/653 ,  G01N2021/845 ,  G01N2021/8636 ,  G01N21/85 ,  G01N2201/0697 ,  G01N2223/076 ,  G01S2007/4975

摘要： In order to sort diamond-bearing ore particles conveyed on a wide belt, exciting radiation strikes the belt along an extended line. Diamonds are detected by passing the emitted radiation through a narrow band pass filter and sensing the Raman radiation with a photo-multiplier tube. Only axial-parallel rays passing through the filter reach the photo-multiplier tube. An array of side-by-side converging lenses can be used, the lenses being of rectangular shape as seen looking along the optical axis with their long axes at right angles to the line of radiation. The ore particles are in the plane of the foci of the lenses, so that radiation emitted by each particle is passed in parallel rays through the filter. In order to stop rays having an angle of incidence greater than the maximum permitted, to avoid identifying non-diamond material as diamond, a further converging lens is used to focus the rays at the plane of a telecentric stop. The stop stops rays having too great an angle of incidence. The position of the diamond can be detected for instance by a CCD array or by a time domain technique. The apparatus can be monitored by giving a signal when the radiation from tracer stones and holes on either side of the belt, differs from predetermined values.

摘要翻译： 为了分类在宽带上输送的含有钻石的矿石颗粒，激发的辐射沿着延伸的线路撞击带。 通过将发射的辐射通过窄带通滤波器并用光电倍增管感测拉曼辐射来检测钻石。 只有穿过过滤器的轴向平行射线才能到达光电倍增管。 可以使用并排会聚透镜的阵列，透镜是沿着光轴看到的长方形的，其长轴与辐射线成直角。 矿石颗粒在透镜的焦点的平面中，使得每个颗粒发射的辐射通过平行的光线通过过滤器。 为了阻止具有大于最大允许值的入射角的光线，为了避免将非金刚石材料识别为金刚石，使用另外的会聚透镜将光线聚焦在远心停止的平面上。 停止停止具有太大入射角的射线。 可以例如通过CCD阵列或时域技术来检测钻石的位置。 当来自示踪器石头的辐射和带的两侧的孔的不同于预定值时，可以通过给出信号来监测该装置。

公开(公告)号：US5206699A

公开(公告)日：1993-04-27

申请号：US810355

申请日：1991-12-18

申请人： Andrew D. G. Stewart ,  Robin W. Smith ,  Martin P. Smith ,  Daniel J. Brink ,  Martin Cooper ,  Christopher M. Welbourn ,  Paul M. Spear

发明人： Andrew D. G. Stewart ,  Robin W. Smith ,  Martin P. Smith ,  Daniel J. Brink ,  Martin Cooper ,  Christopher M. Welbourn ,  Paul M. Spear

IPC分类号： B07C5/342 ,  G01N21/62 ,  G01N21/63 ,  G01N21/64 ,  G01N21/65 ,  G01N21/84 ,  G01N21/85 ,  G01N21/86 ,  G01N23/223 ,  G01S17/06

CPC分类号： B07C5/3425 ,  B07C5/3427 ,  B07C5/366 ,  G01N21/64 ,  G01N21/65 ,  G01N21/87 ,  G01N23/223 ,  G01S17/06 ,  G01S7/497 ,  G01N2021/1734 ,  G01N2021/1789 ,  G01N2021/653 ,  G01N2021/845 ,  G01N2021/8636 ,  G01N21/85 ,  G01N2201/0697 ,  G01N2223/076 ,  G01S2007/4975

摘要： In order to sort diamond-bearing ore particles conveyed on a wide belt, exciting radiation strikes the belt along an extended line. Diamonds are detected by passing the emitted radiation through a narrow band pass filter and sensing the Raman radiation with a photo-multiplier tube. Only axial-parallel rays passing through the filter reach the photo-multiplier tube. An array of side-by-side converging lenses can be used, the lenses being of rectangular shape as seen looking along the optical axis with their long axes at right angles to the line of radiation. The ore particles are in the plane of the foci of the lenses, so that radiation emitted by each particle is passed in parallel rays through the filter. In order to stop rays having an angle of incidence greater than the maximum permitted, to avoid identifying non-diamond material as diamond, a further converging lens is used to focus the rays at the plane of a telecentric stop. The stop stops rays having too great an angle of incidence. The position of the diamond can be detected for instance by a CCD array or by a time domain technique. The apparatus can be monitored by giving a signal when the radiation from tracer stones and holes on either side of the belt, differs from predetermined values.

摘要翻译： 为了分类在宽带上输送的含有钻石的矿石颗粒，激发的辐射沿着延伸的线路撞击带。 通过将发射的辐射通过窄带通滤波器并用光电倍增管感测拉曼辐射来检测钻石。 只有穿过过滤器的轴向平行射线才能到达光电倍增管。 可以使用并排会聚透镜的阵列，透镜是沿着光轴看到的长方形的，其长轴与辐射线成直角。 矿石颗粒在透镜的焦点的平面中，使得每个颗粒发射的辐射通过平行的光线通过过滤器。 为了阻止具有大于最大允许值的入射角的光线，为了避免将非金刚石材料识别为金刚石，使用另外的会聚透镜将光线聚焦在远心停止的平面上。 停止停止具有太大入射角的射线。 可以例如通过CCD阵列或时域技术来检测钻石的位置。 当来自示踪器石头的辐射和带的两侧的孔的不同于预定值时，可以通过给出信号来监测该装置。