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High reflectivity mirrors and method for making same

United States Patent

June 7, 2016
View the Complete Patent at the US Patent & Trademark Office
U.S. Department of Energy - Visit the Office of the Assistant General Counsel for Technology Transfer & Intellectual Property Website
A composite high reflectivity mirror (CHRM) with at least one relatively smooth interior surface interface. The CHRM includes a composite portion, for example dielectric and metal layers, on a base element. At least one of the internal surfaces is polished to achieve a smooth interface. The polish can be performed on the surface of the base element, on various layers of the composite portion, or both. The resulting smooth interface(s) reflect more of the incident light in an intended direction. The CHRMs may be integrated into light emitting diode (LED) devices to increase optical output efficiency.
Heikman; Sten (Goleta, CA), Jacob-Mitos; Matthew (Santa Barbara, CA), Li; Ting (Ventura, CA), Ibbetson; James (Santa Barbara, CA)
12/ 553,025
September 2, 2009
This invention was developed with Government support under National Energy Technology Laboratory Contract No. DE-FC26-07NT43225. The Government has certain rights in this invention.