Patent ID: 8835953
Filing Date: 2014-09-16
Classification: H01L

Abstract:
1. A lighting device, comprising: a plurality of light emitting diode (LED) sets, wherein at least two of the plurality of LED sets have peak emission wavelengths different from each other; a plurality of sets of phosphor layers respectively coated on corresponding LED sets among the plurality of LED sets, at least one of the plurality of sets of phosphor layers being adapted to be excited by a portion of light emitted by the corresponding LED set thereof to emit light having a dominant wavelength ranging form 500 nm to 580 nm, and at least another one of the plurality of sets of phosphor layers being adapted to be excited by a portion of light emitted by the corresponding LED set thereof to emit light having a dominant wavelength ranging from 590 nm to 650 nm; and an input terminal connected to the plurality of LED sets for providing energy thereto for enabling the plurality of LED sets to emit light.