公开(公告)号：US09702825B2

公开(公告)日：2017-07-11

申请号：US15040338

申请日：2016-02-10

Applicant: D. Swarovski KG

Inventor： Karlheinz Eder

IPC: G01N21/00 ,  G01N21/87 ,  G01N21/47 ,  G01N21/55

CPC classification number: G01N21/87 ,  G01N21/4788 ,  G01N21/55 ,  G01N2201/061 ,  G01N2201/0634

Abstract: An assembly for analyzing a light pattern caused by refraction and reflection at a precious stone, comprising a light source for illuminating the precious stone, a retaining device for retaining the precious stone, a diffusing screen for imaging the light pattern, and a camera for recording the light pattern imaged on the diffusing screen. The assembly comprises a semi-transmitting optical element for deflecting, in a direction of the precious stone, light emitted by the light source and transmitting the light refracted and reflected at the precious stone.