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:
Jun. 23, 2015
Filed:
Jul. 25, 2011
Shohei Katsuta, Osaka, JP;
Tsuyoshi Kamada, Osaka, JP;
Satoshi Shibata, Osaka, JP;
Tsuyoshi Maeda, Osaka, JP;
Shohei Katsuta, Osaka, JP;
Tsuyoshi Kamada, Osaka, JP;
Satoshi Shibata, Osaka, JP;
Tsuyoshi Maeda, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A light-controlling element includes an illumination unit capable of controlling an amount of emitted light, and a light guide body on which the light emitted from the illumination unit is incident. The light guide body has a function of propagating the light while totally reflecting the light inside the light guide body, and the light guide body has a function of propagating the light emitted from the illumination unit at a plurality of different propagation angles inside the light guide body. The light guide body includes a plurality of light extraction regions having a function of extracting the light to the outside. At least two of the plurality of light extraction regions have different incidence angle ranges in which the light is capable of being extracted to the outside.