Light source with wavelength converting material

Details Light source with wavelength converting material Light source with wavelength converting material

2007-09-04

2007-09-04

Williams, Joseph (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S502000, C313S503000

Reexamination Certificate

active

10954399

ABSTRACT:
A light emitting device in which a primary light generator, such as a light emitting diode (LED) or laser diode, is operable to emit a primary light that is received by a body of wavelength converting material. A portion of the primary light is absorbed by the body of wavelength converting material and is emitted as secondary light. The wavelength converting material contains phosphor nano-particles and larger phosphor particles. The phosphor nano-particles prevent transmission of primary light while the larger phosphor particles provide efficient light conversion.

REFERENCES:
patent: 5811924 (1998-09-01), Okumura et al.
patent: 2003/0127660 (2003-07-01), Bawendi et al.
patent: 2003/0227249 (2003-12-01), Mueller et al.
patent: 2005/0001533 (2005-01-01), Huber et al.
patent: 2005/0006659 (2005-01-01), Ng et al.

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