Patent · US Active

LED-based illumination device with color converting surfaces

US8449129B2 · kind B2 · utility

10Cited by

23References

14Claims

0Family size

Assignee

Xicato, Inc. · US

Inventors

Gerard Harbers · Sunnyvale, US
Serge J. Bierhuizen · San Jose, US
Hong Luo · Danvers, US

Key dates

Filing date	Jul 27, 2012
Grant date	May 28, 2013
Priority date	—
Expiry date	Jul 27, 2032

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF21Y2115/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An illumination module includes a color conversion cavity with a first interior surface having a first wavelength converting material and a second interior surface having a second wavelength converting material. A first LED is configured to receive a first current and to emit light that preferentially illuminates the first interior surface. A second LED is configured to receive a second current and emit light that preferentially illuminates the second interior surface. The first current and the second current are selectable to achieve a range of correlated color temperature (CCT) of light output by the LED based illumination device.

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