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. 07, 2005
Filed:
May. 21, 2002
Yuuki Tamura, Anan, JP;
Koichi Kunikata, Anan, JP;
Nobutoshi Shiota, Anan, JP;
Eiji Nakanishi, Anan, JP;
Yuuki Tamura, Anan, JP;
Koichi Kunikata, Anan, JP;
Nobutoshi Shiota, Anan, JP;
Eiji Nakanishi, Anan, JP;
Nichia Corporation, Tokushima, JP;
Abstract
An optical waveguide for emitting light of uniform intensity distributed over the light emitting surface so as to suppress the occurrences of bright lines includes an optical waveguide and surface light emitting apparatus that has a light emitting plane and a reflecting plane that oppose each other. The reflecting surface has a plurality of dots formed thereon so that light entering from the light source, provided on one end face or two opposing end faces, is output through the light emitting surface with uniform intensity, wherein the dots are arranged so as to form band regions each being defined as a region that has a constant density of distribution. A plurality of vertical lines of the dots are formed at substantially equal intervals in each of the band regions in the direction toward adjacent bands, and the interval between the vertical lines of dots is made different in different bands.