An apparatus for generating a spectrally shifted light output from a light-emitting device using thin film luminescence layers

摘要

A lighting unit, the a spectrally shifted light output from a light source, comprises a half conductor light emitter animal device and a first thin film luminescence material layer, one surface of the half conductor light emitter coated animal device. The first thin film luminescence material layer comprises a luminescent material, which, in response to the source light, a emits light emitted. The first thin film luminescence material layer has a specific and uniform thickness and a specific and uniform density of luminescence portion to. The emitted light comprises a first luminescent material - emitted light, if the luminescent material of the source light absorbed completely. The emitted light comprises a first composite light, if the first luminescent material is less than the entire source light absorbed. The apparatus can further includes a second thin film luminescence layer, the luminescence layer, the first thin film coated.