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:
Nov. 15, 2011
Filed:
Jan. 17, 2008
Shogo Shinkai, Miyagi, JP;
Yasuyuki Kudo, Miyagi, JP;
Makoto Aoki, Miyagi, JP;
Kiyohiro Kimura, Miyagi, JP;
Katsuhiro Doi, Miyagi, JP;
Shogo Shinkai, Miyagi, JP;
Yasuyuki Kudo, Miyagi, JP;
Makoto Aoki, Miyagi, JP;
Kiyohiro Kimura, Miyagi, JP;
Katsuhiro Doi, Miyagi, JP;
Sony Corporation, Tokyo, JP;
Abstract
A light control element capable of controlling deflection of light output through a light guide plate to a desired output viewing angle is provided. A light control element (prism sheet) has a plane of incidence on one surface thereof, and a plane of output on the other surface thereof. The plane of incidence is formed as having thereon a number of prism portions arrayed in parallel. Each of the prism portions has a first prism surface allowing incidence of light, and a second prism surface where the light entering through the first prism surface is reflected by total reflection on the inner side. The second prism surface has an outwardly-swelled curved profile, formed with a curvature that allows the light to output through the plane of output at a second output viewing angle wider than a first output viewing angle of a case where the second prism surface is flat.