Patent ID: 11879842
Assignee: GEMOLOGICAL INSTITUTE OF AMERICA, INC. (GIA)
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 16:
17. A method for analyzing gemstones, the method comprising:
illuminating, by a first light source, a gemstone on a stage, wherein the first illumination is aimed at a first dichoric beam splitter, configured to reflect radiation from the first light source through a second dichroic beam splitter to the gemstone on the stage;
receiving, by a camera, aimed through the first dichroic beam splitter and the second dichoric beam splitter to the gemstone on the stage, a first set of images wherein the first set of images are captured at least 50 μs apart and are captured by the camera responsive to a first trigger specifying a first time delay to capture the first set of images at least 100 μs after turning off the first light source;
illuminating, by a second light source, the gemstone on a stage, wherein the second light source is aimed at a second dichroic beam splitter configured to reflect radiation from the second light source to the gemstone on the stage;
receiving, by the camera, aimed through the first dichroic beam splitter and the second dichoric beam splitter to the gemstone on the stage, a second set of images, wherein the second set of images are captured at least 50 μs apart and are captured by the camera responsive to a second trigger specifying a second time delay to capture the second set of images at least 100 μs after turning off the second light source.