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:
Jun. 03, 2003
Filed:
Apr. 10, 2001
Hiroki Ishinaga, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
A chip light-emitting device includes a baseboard LED elements different in color of emission light are respectively mounted on two electrodes formed on a surface of the baseboard. A reflector has an aperture in an oval form as viewed in plan and placed on the baseboard such that the LED elements are at a center surrounded by a slant surface of an inner wall of the aperture. The slant surface includes two reflection surfaces continued almost at a center of the reflector with respect to a thickness direction. The reflection surfaces are set with respective inclination angles such that a first angle (&thgr;p), given between reflection light reflected on a lower side of the lower reflection surface and reflection light reflected on an upper side the lower reflection surface that are due to the first output light of the first LED element arranged closer to the lower reflection surface, equal to a second angle (&thgr;q), given between reflection light reflected on a lower side the upper reflection surface and reflection light reflected on an upper side of the upper reflection surface that are due to second output light from the second LED element arranged distant from the lower reflection surface.