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:
Mar. 10, 2009
Filed:
Nov. 01, 2005
Hitoshi Takeda, Shizuoka, JP;
Osamu Kuboyama, Shizuoka, JP;
Hitoshi Takeda, Shizuoka, JP;
Osamu Kuboyama, Shizuoka, JP;
Koito Manufacturing Co., Ltd., Tokyo, JP;
Abstract
A light-emitting device () including a light-emitting element (), a first phosphor (), and a second phosphor (). The light-emitting element () emits light Lhaving a wavelength range within the visible region. Upon receipt of the light L, or light Loriginating from the second phosphor (), the first phosphor () emits light Lhaving a wavelength range, which differs from that of the first light Land the third light L, but falls within the visible region. Upon receipt of a specific wavelength component (ultraviolet light, or the like) included in external light, the second phosphor () generates the light Lwhose wavelength range is substantially the same as that of the light L, thereby radiating the first phosphor () with the light L