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US Patent 7997745 Lighting device and lighting method

Patent 7997745 was granted and assigned to Wolfspeed on August, 2011 by the United States Patent and Trademark Office.

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Patent abstractTimelineTable: Further ResourcesReferences
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Patent
Patent
1

Patent attributes

Current Assignee
Wolfspeed
Wolfspeed
1
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
1
Patent Number
79977451
Patent Inventor Names
Antony Paul Van De Ven1
Gerald H. Negley1
Date of Patent
August 16, 2011
1
Patent Application Number
117373211
Date Filed
April 19, 2007
1
Patent Primary Examiner
‌
Sharon E. Payne
1
Patent abstract

A lighting device, comprising a first group of solid state light emitters and a first group of lumiphors, wherein at least some of the first group of solid state light emitters are contained in a first group of packages, each of which also comprises at least one of the first group of lumiphors. If all of the first group of solid state light emitters which are contained in the first group of packages are illuminated and/or if current is supplied to a power line, (1) a combined illumination from the first group of packages would, in the absence of any additional light, have color coordinates on a 1976 CIE Chromaticity Diagram which define a first point, and (2) at least 20% of the packages would emit light having color coordinates spaced from the first point. Also, methods of lighting.

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