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:
May. 01, 2012
Filed:
Dec. 17, 2008
Jinhui Zhai, Oldsmar, FL (US);
Israel J. Morejon, Tampa, FL (US);
Thong Bui, Tarpon Springs, FL (US);
Jinhui Zhai, Oldsmar, FL (US);
Israel J. Morejon, Tampa, FL (US);
Thong Bui, Tarpon Springs, FL (US);
Lednovation, Inc., Tampa, FL (US);
Abstract
A semiconductor lighting device includes a semiconductor light emitter packaged on a reflective substrate to emit a first light and a remote wavelength conversion layer on a back-transferred light path to convert the back-transferred first light into a forward second light. A filter is disposed on a light emitting forward path with a space to the semiconductor light emitter to reflect back at least a portion of the first light. A diffusive member may be positioned outside of the filter to diffuse the forward passing light before it exits from the semiconductor lighting device. As a second aspect of this invention, a solid state lighting device includes a short wavelength semiconductor emitter; a long wavelength semiconductor emitter with wavelength in reddish orange range; a filter on a light emitting forward path to reflect back a portion of short wavelength first light; and a wavelength conversion component on a back-transferred light path. The device produces a mixture of warm white light in a correlated color temperature from 2700˜3500 K and color rendering index at least 85 for any indoor lighting application.