Patent · US Active

Enhancing the optical characteristics of a gemstone

US8033136B2 · kind B2 · utility

17Cited by

10References

34Claims

0Family size

Assignee

CALIFORNIA INSTITUTE OF TECHNOLOGY · US

Inventors

George Maltezos · Fort Salonga, US
Axel Scherer · Laguna Beach, US
Jeremy Witzens · Aachen, DE

Key dates

Filing date	Dec 6, 2006
Grant date	Oct 11, 2011
Priority date	—
Expiry date	May 2, 2028

Classification

Technology area (CPC G)Physics
CPC primaryG01N21/87
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Various embodiments described herein comprise a gemstone or other piece of jewelry, which incorporates one or more diffractive optical elements to enhance the fire displayed by the gemstone. In certain embodiments, the diffractive optical element comprises a diffraction grating etched on one or more facets of the gemstone.

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