| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a light emitting device of high light emitting efficiency wherein light is subjected to effective visible light conversion and heat dissipation property is improved, while restraining reflected transmitting light of a light source such as an LED which becomes an excitation light in a light emitting device using a light emitting source such as a short wavelength LED. <P>SOLUTION: The light emitting device comprises a light source using a purple-blue or blue LED; a reflected wavelength converter which is constituted of a phosphor for reflexively performing wavelength conversion to other color light using light from the light source part as excitation light, and its bind material or the like; and a housing having a permeable surface transmitting material which picks up color light subjected to wavelength conversion in the reflected wavelength converter to a surface. The device is provided with a permeable wavelength converter constituted of the phosphor which has light distribution not allowing emitted light from a light source light emitter to be directly injected into a permeable surface transmitting material, and permeably carries out color light conversion using light source light which is reflected in a reflection wavelength converter without being subjected to color light conversion and reaches a surface transmitting material as excitation light, and a bind material or the like. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
