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:
Apr. 22, 2003
Filed:
Aug. 18, 2000
Tadaoki Ichikawa, Aichi-ken, JP;
Akihiro Misawa, Aichi-ken, JP;
Mitsuhiro Nawashiro, Aichi-ken, JP;
Toshinori Takahashi, Aichi-ken, JP;
Yoshiaki Ito, Aichi-ken, JP;
Toyoda Gosei Co. Ltd., Aichi-ken, JP;
Abstract
A casing accommodates therein three primary colors of chip LEDs. The casing is disposed in a through hole of a plate-shaped light guide. The chip LEDs are mounted on both surfaces of a substrate so as to face a peripheral surface of the through hole (light incident surface). The casing is made of a transparent synthetic resin accommodating therein the substrate and the chip LEDs. The light emitted from the chip LEDs can be introduced directly into the light incident surface of the light guide. The three primary color of chip LEDs are controlled so that a desired color and intensity of light can be efficiently introduced into the light guide.