PHOSPHOR CONVERTED LIGHT EMITTING DIODE, A LAMP AND A LUMINAIRE

摘要

A phosphor converted Light Emitting Diode (LED), a lamp and a luminaire are provided. The phosphor converted LED 106 comprises a LED 102, a first luminescent material166, a second luminescent material 164 and a third luminescent material 162. The LED 102 emits a first spectral distribution having a first peak wavelength in the blue spectral range. The first luminescent material 166 absorbs 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 material 164 absorbs absorbing a portion of the light of the first spectral distribution and/or a portion of the second spectral distribution. The second luminescent material 164 converts 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 material 162 absorbs 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 material 162 converts 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.

主权项

1. A phosphor converted Light Emitting Diode comprising:
a Light Emitting Diode emitting a first spectral distribution having a first peak wavelength in the blue spectral range between 445 nanometers and 495 nanometers, a first luminescent material configured for absorbing a portion of the light of the first spectral distribution and for converting at least a portion of the absorbed light into light of a second spectral distribution, the second spectral distribution having a second peak wavelength in the green spectral range, a second luminescent material configured for absorbing a portion of the light of the first spectral distribution and/or a portion of the second spectral distribution and for converting at least a portion of the absorbed light into light of a third spectral distribution, the third spectral distribution having a third spectral width and having a third peak wavelength, a third luminescent material configured for absorbing a portion of the light of at least one of the first spectral distribution, second spectral distribution, and the third spectral distribution and for converting at least a portion of the absorbed light into light of a fourth spectral distribution, the fourth spectral distribution having a fourth spectral width and having a fourth peak wavelength,wherein the third peak wavelength and the fourth peak wavelength are in the orange/red spectral range, the third peak wavelength being smaller than the fourth peak wavelength, and the third spectral width being larger than the fourth spectral width.