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:
Jul. 04, 2006
Filed:
Apr. 21, 2004
Applicants:
Daisaku Okuwaki, Fujiyoshida, JP;
Takashi Shimura, Fujiyoshida, JP;
Kiyokazu Watanabe, Fujikawaguchiko-machi, JP;
Junji Miyashita, Fujiyoshida, JP;
Inventors:
Daisaku Okuwaki, Fujiyoshida, JP;
Takashi Shimura, Fujiyoshida, JP;
Kiyokazu Watanabe, Fujikawaguchiko-machi, JP;
Junji Miyashita, Fujiyoshida, JP;
Assignee:
Citizen Electronics Co., LTD, Yamanashi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A sheet light emitting apparatus, including a light guiding plate of a translucent material and having light receiving and light emitting surfaces, a light source disposed to face the light receiving surface, and a prism structure provided on the light receiving surface, the prism structure having plural kinds of prisms having different apex angles.