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. 18, 2002
Filed:
Jul. 12, 2000
Atsushi Itoh, Kikuchi-gun, JP;
Advanced Display Inc., Kikuchi-gun, JP;
Abstract
A sheet-like light source device of side-light type comprising a light-conducting plate, at least one rod-like light source disposed proximate to a light-incident surface comprising at least one lateral side end portion of the light-conducting plate, a tubular reflecting member, and a planar reflecting member. Sloped surfaces which are inclined with respect to the light-incident surface of the light-conducting plate are formed proximate to positions of the light-incident surface of the light-conducting plate at which a luminous energy of the rod-like light source is decreased. It is possible to effectively eliminate generation of irregularities of brightness also in case the sheet-like light source device employs a light-conducting plate having no scattering portions through printing.