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. 26, 2005
Filed:
Mar. 15, 2004
Masaya Adachi, Hitachi, JP;
Ikuo Hiyama, Hitachi, JP;
Makoto Tsumura, Hitachi, JP;
Shusuke Endo, Mobara, JP;
Masaya Adachi, Hitachi, JP;
Ikuo Hiyama, Hitachi, JP;
Makoto Tsumura, Hitachi, JP;
Shusuke Endo, Mobara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A lighting unit having a plurality of light-emitting diode (LED) light sources arranged in parallel, a plurality of light-guiding members arranged along a direction wherein the LED light sources are arranged, a light reflecting part arranged on one side face of the light-guiding members, a light diffusion part arranged on an other side face of the light-guiding members, a light semi-transmitting reflection part arranged between the LED light source and the light diffusion part, and an optical path changing part arranged above the light-guiding members. A side of the light-guiding members that faces the light diffusion part is flat.