The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 18, 2010
Filed:
Nov. 25, 2004
Kouji Nishioka, Kadoma, JP;
Masaru Sugimoto, Osaka, JP;
Hideyoshi Kimura, Hirakata, JP;
Ryoji Yokotani, Hirakata, JP;
Yutaka Iwahori, Ibaraki, JP;
Takuma Hashmoto, Yawata, JP;
Shinya Ishizaki, Hirakata, JP;
Satoshi Mori, Osaka, JP;
Hiroyuki Sekii, Kadoma, JP;
Eiji Shiohama, Katano, JP;
Kouji Nishioka, Kadoma, JP;
Masaru Sugimoto, Osaka, JP;
Hideyoshi Kimura, Hirakata, JP;
Ryoji Yokotani, Hirakata, JP;
Yutaka Iwahori, Ibaraki, JP;
Takuma Hashmoto, Yawata, JP;
Shinya Ishizaki, Hirakata, JP;
Satoshi Mori, Osaka, JP;
Hiroyuki Sekii, Kadoma, JP;
Eiji Shiohama, Katano, JP;
Panasonic Electric Works Co., Ltd., Osaka, JP;
Abstract
A light emitting device comprises: an LED chip mounted in a recess formed in a mounting substrate; a wavelength converting member that is disposed so as to cover the recess and the edge area around the recess and that is excited by light emitted from the LED chip to emit light of a wavelength different from an excitation wavelength; and an emission control member disposed at a light output side of the wavelength converting member so as to allow emission of light coming from an area of the wavelength converting member that corresponds to the recess and to prevent emission of light coming from an area of the wavelength converting member that corresponds to the edge area around the recess. This can prevent variations in color between light emitted from the central part of the wavelength converting member and light emitted from the part of the wavelength converting member that is located on the edge area around the recess of the mounting substrate, thereby reducing unevenness of color on the irradiation surface.