Patent ID: 6603258
Filing Date: 2003-08-05
Classification: H01L

Abstract:
A device for generating white light, the device comprising:a light emitting device, emitting primary radiation when driven, the primary radiation having at least one wavelength in the range of approximately 485 to approximately 515 nanometers (nm); a wavelength-converting element comprising a wavelength-converting material, the wavelength-converting element located to receive the primary radiation emitted by the light emitting device, wherein: a first portion of the primary radiation received by the wavelength-converting element passes through the wavelength-converting element unconverted; the wavelength-converting material consists essentially of a material capable of receiving a second portion of the primary radiation and converting the second portion to secondary radiation having a peak intensity wavelength in the range of approximately 600 to approximately 620 nm; and the first portion of the primary radiation and the secondary radiation combine to produce white light.