Patent · US Active

Method to characterize cut gemstones using optical coherence tomography

US10458921B2 · kind B2 · utility

1Cited by

2References

1Claims

0Family size

Assignee

The Regents of the University of California · US

Inventors

Matthew Brenner · Charlotte, US
Andrew Emon Heidari · Irvine, US
Zhongping Chen · Irvine, US
Sari Brenner Mahon · Irvine, US
Joseph Jing · Irvine, US

Key dates

Filing date	Dec 19, 2016
Grant date	Oct 29, 2019
Priority date	—
Expiry date	Dec 19, 2036

Classification

Technology area (CPC G)Physics
CPC primaryG01N2201/06113
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The invention includes an improvement in a method of assessing a gemstone having at least one planar face with an internally reflecting surface including the steps of optically modifying the at least one planar face of the gemstone to return a sample beam from an internally reflecting plane corresponding to the at least one planar face to an optical coherence tomography (OCT) system; selectively directing the sample beam from an optical coherence tomography (OCT) system onto the gemstone; and generating an OCT image map of the gemstone to determine volume, gem carat weight and/or quality.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.