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:
Aug. 02, 2011
Filed:
Dec. 11, 2008
Tatsuro Yamada, Fujiyoshida, JP;
Hiroto Isoda, Fujiyoshida, JP;
Kenji Kusano, Yamanashi-ken, JP;
Citizen Electronics Co., Ltd., Fjiyoshida-shi, Yamanashi-ken, JP;
Abstract
A sheet-shaped lightguide member has a first surface (A), which is divided into at least two areas. The sheet-shaped lightguide member has the first surface (A) and a second surface (B) that face each other and a peripheral edge surface (C). The lightguide member receives light through at least a part of the peripheral edge surface, guides the light, and emits the guided light from the first surface (A) serving as a light exit surface. The lightguide member is divided into the at least two light exit areas (A,B) and has a light-blocking part () provided along a boundary between mutually adjacent light exit areas to block transmission of light between the adjacent light exit areas.