The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 19, 2016
Filed:
Jan. 31, 2011
Tao Tong, Oxnard, CA (US);
Ronan Le Toquin, Fremont, CA (US);
Bernd Keller, Santa Barbara, CA (US);
Eric Tarsa, Goleta, CA (US);
Mark Youmans, Goleta, CA (US);
Theodore Lowes, Lompoc, CA (US);
Nicholas W. Medendorp, Jr., Raleigh, NC (US);
Antony Van DE Ven, Sai Kung, N.T., HK;
Gerald Negley, Durham, NC (US);
Tao Tong, Oxnard, CA (US);
Ronan Le Toquin, Fremont, CA (US);
Bernd Keller, Santa Barbara, CA (US);
Eric Tarsa, Goleta, CA (US);
Mark Youmans, Goleta, CA (US);
Theodore Lowes, Lompoc, CA (US);
Nicholas W. Medendorp, Jr., Raleigh, NC (US);
Antony Van De Ven, Sai Kung, N.T., HK;
Gerald Negley, Durham, NC (US);
CREE, INC., Durham, NC (US);
Abstract
An LED lamp or bulb is disclosed that comprises a light source, a heat sink structure and an optical cavity. The optical cavity comprises a phosphor carrier having a conversions material and arranged over an opening to the cavity. The phosphor carrier comprises a thermally conductive transparent material and is thermally coupled to the heat sink structure. An LED based light source is mounted in the optical cavity remote to the phosphor carrier with light from the light source passing through the phosphor carrier. A diffuser dome is included that is mounted over the optical cavity, with light from the optical cavity passing through the diffuser dome. The diffuser dome can disperse the light passing through it into the desired emission pattern, such as omnidirection. In one embodiment, the light source can be blue emitting LED and the phosphor carrier can include a yellow phosphor, with the LED lamp or bulb emitting a white light combination of LED and phosphor light.