LIGHT-EMITTING DEVICE AND METHOD OF MANUFACTURING THE SAME

Japanese Patent JP3707688

B2

PROBLEM TO BE SOLVED: To solve a problem of color unevenness and low conversion efficiency caused by being unable to utilize the light radiated from a wavelength-conversion part toward a semiconductor light-emitting-element side as the radiating light in a conventional light-emitting device in which the wavelength-conversion part is arranged.
SOLUTION: The problem requiring improvement in the utilization efficiency of the light from the wavelength-conversion part 5 is solved by constituting a LED lamp in the following way. A light-radiating-direction limiting part 4a and, in its surroundings, a reflecting part 4b are arranged on a base body 4. The wavelength-conversion part 5 is arranged in an appropriate position so as to cover the light-radiating-direction limiting part 4a and a part of the reflecting part 4b. The light wavelength-converted from the basic wavelength light to the wavelength-converted light by the wavelength-conversion part 5, is divided into a directly radiating light that passes the wavelength-conversion part 5 and is radiated toward the front-face side, and a reflected wavelength-converted light that is radiated toward the inner-face side of the wavelength conversion part 5 and is reflected toward the radiating direction of the light-emitting device 1 by the reflecting part 4b. As a consequence, the both lights are outputted as the output light.

Mitsunori Harada

JP2002379499A

October 19, 2005

December 27, 2002

Click for automatic bibliography generation  

Stanley Electric Co., Ltd.

H01L33/44; H01L33/50; H01L33/54; H01L33/56; H01L33/60; H01L33/62; (IPC1-7): H01L33/00

JP11087778A
JP2003298117A
JP2002057375A
JP2002134795A
JP2000349346A
JP11145519A
JP61150284A
JP7086640A

Teruo Akimoto

Previous Patent: SLIDING DOOR DEVICE IN SHOWCASE OR THE LIKE

Next Patent: TABLE APPARATUS