Lighting devices having remote lumiphors that are excited by lumiphor-converted semiconductor excitation sources

Patent metadata

Field	Value
Publication number	US-9220149-B2
Application number	US-201313891744-A
Country	US
Kind code	B2
Filing date	May 10, 2013
Priority date	Jan 20, 2006
Publication date	Dec 22, 2015
Grant date	Dec 22, 2015

Abstract

Lighting devices include a semiconductor light emitting device and first and second spaced-apart lumiphors. The first lumiphor has a first surface that is positioned to receive radiation emitted by the semiconductor light emitting device and a second surface opposite the first surface. The second lumiphor has a first surface that is positioned to receive radiation emitted by the semiconductor light emitting device and radiation emitted by the luminescent materials in the first lumiphor. The first lumiphor is a leaky lumiphor in that the luminescent materials therein wavelength convert less than 90% of the radiation from the semiconductor light emitting device light that is incident on the first lumiphor.

First claim

What is claimed is:

1. A lighting device, comprising:
a plurality of semiconductor light emitting devices, wherein at least some of the semiconductor light emitting devices include a respective associated first lumiphor that has a first surface that is positioned to receive radiation emitted by its associated semiconductor light emitting device;
a second lumiphor that is different from the first lumiphors, the second lumiphor positioned to receive radiation emitted by the semico…

Assignees

• Cree Inc

Inventors

• Pickard Paul
• Van De Ven Antony P
• Letoquin Ronan P

Classifications

• H05B33/12 Primary

  Electricity · mapped topic

• H10W72/01515

  Electricity · mapped topic

• H10W72/075

  Electricity · mapped topic

• H10W90/00

  Electricity · mapped topic

• H10H20/8506

  Electricity · mapped topic