Light Emitting Lamp Bead and Lamp
AssigneeFoshan Nationstar Optoelectronics Co., Ltd.
InventorsYurong LI, Libing PAN, Fuhai LI, Zhiguo XIE
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Abstract
Disclosed is a light emitting lamp bead, in which a blue light missing portion is effectively filled by means of a chip excitation phosphor combination having the waveband of 400 nm-415 nm, and phosphors also has strong absorption for purple light, so that a light emitting diode (LED) device having high light emitting efficiency may be obtained. For the waveband of 420 nm-460 nm, a blue phosphor also achieves emission; however, because the phosphors have broad peak emission, the intensity is weak with respect to a blue light excitation position, so that the harm of blue light is reduced.
Claims20
A light emitting lamp bead, comprising at least one light emitting element and phosphors excited by the at least one light emitting element, wherein a main emission peak wavelength range of each light emitting element is 400 nm-415 nm, and the phosphors comprises a blue phosphor, a green phosphor, a yellow phosphor and a red phosphor.
Dependencies are inferred from the claim text.