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:
Jun. 16, 2015
Filed:
Feb. 24, 2011
Long Larry Le, Morrisville, NC (US);
Ronan Letoquin, Fremont, CA (US);
Bernd Keller, Santa Barbara, CA (US);
Eric Tarsa, Goleta, CA (US);
Paul Pickard, Morrisville, NC (US);
James Michael Lay, Cary, NC (US);
Tao Tong, Oxnard, 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, HK;
Gerald Negley, Durham, NC (US);
Long Larry Le, Morrisville, NC (US);
Ronan Letoquin, Fremont, CA (US);
Bernd Keller, Santa Barbara, CA (US);
Eric Tarsa, Goleta, CA (US);
Paul Pickard, Morrisville, NC (US);
James Michael Lay, Cary, NC (US);
Tao Tong, Oxnard, 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, HK;
Gerald Negley, Durham, NC (US);
Cree, Inc., Durham, NC (US);
Abstract
Solid state lamps and bulbs comprising different combinations and arrangements of a light source, one or more wavelength conversion materials, regions or layers which are positioned separately or remotely with respect to the light source, and a separate diffuser. These are arranged on a heat sink in a manner that allows for the fabrication of lamps and bulbs that are efficient, reliable and cost effective and can provide an essentially omni-directional emission pattern, even with a light source comprised of a co-planar arrangement of LEDs. Additionally, this arrangement allows aesthetic masking or concealment of the appearance of the conversion regions or layers when the lamp is not illuminated. Various embodiments of the invention may be used to address many of the difficulties associated with utilizing efficient solid state light sources such as LEDs in the fabrication of lamps or bulbs suitable for direct replacement of traditional incandescent bulbs. Embodiments of the invention can be arranged to fit recognized standard size profiles such as those ascribed to commonly used lamps such as incandescent light bulbs, while still providing emission patterns that comply with ENERGY STAR® standards.