Phosphor converted light emitting diode, a lamp and a luminaire

Abstract

A phosphor converted Light Emitting Diode (LED), a lamp and a luminaire are provided. The phosphor converted LEDcomprises a LED, a first luminescent material, a second luminescent materialand a third luminescent material. The LEDemits a first spectral distribution having a first peak wavelength in the blue spectral range. The first luminescent materialabsorbs a portion of the light of the first spectral distribution and converts at least a portion of the absorbed light towards light of a second spectral distribution. The second spectral distribution has a second peak wavelength in the green spectral range. The second luminescent materialabsorbs absorbing a portion of the light of the first spectral distribution and/or a portion of the second spectral distribution. The second luminescent materialconverts at least a portion of the absorbed light towards lights of a third spectral distribution. The third spectral distribution has a third spectral width and has a third peak wavelength. The third luminescent materialabsorbs a portion of the light of at least one of the first spectral distribution, second spectral distribution, and the third spectral distribution. The third luminescent materialconverts at least a portion of the absorbed light towards light of a fourth spectral distribution. The fourth spectral distribution has a fourth spectral width and has a fourth peak wavelength. The third peak wavelength and the fourth peak wavelength are in the orange/red spectral range. The third peak wavelength is smaller than the fourth peak wavelength and the third spectral width is larger than the fourth spectral width.