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:
Oct. 11, 2011
Filed:
Sep. 23, 2008
Atsushi Omori, Tokyo, JP;
Michiyo Tokita, Ichihara, JP;
Atsushi Omori, Tokyo, JP;
Michiyo Tokita, Ichihara, JP;
Stanley Electric Co., Ltd., Tokyo, JP;
Abstract
A plurality of mirror surfaces (), which extend in a direction (X-axis direction) perpendicular to a light incident surface (), are formed side by side in a longitudinal direction (Y-axis direction) of the light incident surface () on a light distribution control surface () of both surfaces () of a light guide plate () in a thickness direction (Z-axis direction) thereof, and a plurality of prisms () extending in the Y-axis direction are formed side by side in the X-axis direction in areas other than the mirror surfaces (). The mirror surfacesare formed in such a way that Y-axis direction widths thereof vary in the X-axis direction. This enables the setting of the light distribution characteristics and luminance distribution of emitted light, which are viewed in two directions, namely a longitudinal direction of the light incident surface of the light guide plate and the direction perpendicular to the light incident surface, to target light distribution characteristics and luminance distribution.