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. 18, 2012
Filed:
Aug. 29, 2008
Mitsunari Hoshi, Miyagi, JP;
Kei Obata, Miyagi, JP;
Akihiro Horii, Miyagi, JP;
Noriyuki Hirai, Miyagi, JP;
Hiroshi Mizuno, Miyagi, JP;
Jun Shimizu, Miyagi, JP;
Mitsunari Hoshi, Miyagi, JP;
Kei Obata, Miyagi, JP;
Akihiro Horii, Miyagi, JP;
Noriyuki Hirai, Miyagi, JP;
Hiroshi Mizuno, Miyagi, JP;
Jun Shimizu, Miyagi, JP;
Sony Corporation, Tokyo, JP;
Abstract
An illumination apparatus is disclosed. The illumination apparatus includes a polarization plate, a light source, and a light transmission film. The light transmission film is disposed between the polarization plate and the light source and includes a plurality of prisms formed on a surface thereof, the plurality of prisms each having a ridge line in a first direction and being continuously arranged in a second direction perpendicular to the first direction. In the illumination apparatus, the light transmission film is disposed such that a ridge line direction of the plurality of prisms is one of a perpendicular direction and an approximately perpendicular direction to a transmission axis of the polarization plate.