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:
Dec. 13, 2011
Filed:
Apr. 14, 2009
Atsushi Ito, Kanagawa, JP;
Yoshiaki Kouyama, Tokyo, JP;
Atsushi Ito, Kanagawa, JP;
Yoshiaki Kouyama, Tokyo, JP;
Sony Corporation, , JP;
Abstract
A surface light source device includes a diffusing member which diffuses light, a reflective member which reflects light, plural light sources provided aligned in a flat manner between the diffusing member and the reflective member, and a light control member provided between the plural light sources and the reflective member as well as arranged in a state that a gap is imposed between the reflective member and the light control member, which has a light-guiding function of guiding part of light emitted from respective light sources in an alignment direction of the light sources, in which the light control member has a rugged structure portion in which geometric shapes in cross section are continuously formed on at least one surface.