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:
Aug. 04, 2009
Filed:
Mar. 26, 2007
Joon Chok Lee, Kuching Sarawak, MY;
Kee Yean NG, Penang, MY;
Chee Wai Chia, Penang, MY;
David C. Feldmeier, Redwood City, CA (US);
Joon Chok Lee, Kuching Sarawak, MY;
Kee Yean Ng, Penang, MY;
Chee Wai Chia, Penang, MY;
David C. Feldmeier, Redwood City, CA (US);
Avago Technologies ECBU IP (Singapore) Pte. Ltd., Singapore, SG;
Abstract
A solid state light source having first and second component light sources and an interface circuit and a method for making the same are disclosed. The first and second component light sources emit light having first and second color points on different sides of the black body radiation curve. The first and second component light sources include LEDs that emit light of a first wavelength and a layer of a light converting material that converts a portion of that light to light of a second wavelength. The interface circuit powers the first and second component light sources such that the solid state light source has a color point that is closer to the black body radiation curve than either the first or second color points. A third component light source can be included to expand the range of white color temperatures that can be reached by the light source.