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

Claim 9:
10. A system for gemstone analysis, comprising,
an optical layout with two light sources, wherein the light sources are both configured to illuminate a stage,
wherein the two light sources are different wavelengths;

a top viewing camera in the optical layout configured to capture images of luminescence features in a gemstone under analysis on the stage,, wherein the camera is configured to view the stage through a first dichroic beam splitter where the first light source is aimed, and a second dichroic beam splitter where the second light source is aimed;
a computer in communication with the at least two light sources and camera, wherein the camera is configured to trigger the first light source on, trigger the first light source off, capture a first image about 130 μs after the first light source is triggered off, and capture a second image about 50 μs after the first image capture,, trigger the second light source on, trigger the second light source off, capture a third image about 130 μs after the second light source is triggered off, and capture a fourth image about 50 μs after the third image capture.