Abstract: A wavelength-converting plate for a wavelength-converted light emitting diode (LED) assembly. The wavelength-converting plate includes multiple layers of microlenses deposited thereon. The microlenses may have an index of refraction different from an index of refraction of the wavelength-converting plate.
Type:
Grant
Filed:
September 27, 2010
Date of Patent:
December 18, 2012
Assignee:
OSRAM SYLVANIA Inc.
Inventors:
Alan Piquette, John Kelso, Nathan Zink, John Nappi, Yi Zheng, Madis Raukus
Abstract: A ceramic arc tube for high intensity discharge (HID) lighting applications is provided wherein the arc tube contains a high buffer gas pressure. A method and apparatus for making the arc tube are also provided wherein RF induction heating is used to melt a frit material to form a hermetic seal.
Type:
Grant
Filed:
May 19, 2005
Date of Patent:
March 13, 2007
Assignee:
Osram Sylvania Inc.
Inventors:
Stefan Kotter, Gregory Zaslavsky, Fred Whitney
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