公开(公告)号：WO1996023207A1

公开(公告)日：1996-08-01

申请号：PCT/US1996000859

申请日：1996-01-23

Applicant: UGTS, INC.

Inventor： UGTS, INC. ,  VALENTE, Kevin, A. ,  REUTER, Ernest, R. ,  WAGNER, Randall, M.

IPC: G01N19/02

CPC classification number: G01J3/50 ,  G01J3/0251 ,  G01J3/504 ,  G01J3/51 ,  G01N21/87

Abstract: The invention relates to evaluation of gemstones and other transparent specimens and in particular to color grading of gemstones. The device utilizes a band pass filter (23) which transmits light through lenses (32) onto the detector array (31) to obtain the spectral response of a complete image. The gemstone is illuminated with annular light ring (22), which receives light from a light source (18) located in the right half compartment (14), in a way that provides for analysis of both reflected and transmitted light. The device utilizes multiple lighting angles to construct a composite image that is used to perform the grading of the gemstones.

Abstract translation: 本发明涉及宝石和其他透明标本的评价，特别涉及宝石的颜色分级。 该装置使用带通滤波器（23），其将透过透镜（32）的光透射到检测器阵列（31）上，以获得完整图像的光谱响应。 用环形光环（22）照射宝石，该环形光环以提供对反射和透射光的分析的方式接收来自位于右半室（14）中的光源（18）的光。 该设备利用多个照明角度构建用于执行宝石分级的复合图像。