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:
Jan. 05, 2016
Filed:
Apr. 26, 2013
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Masaru Fujita, Osaka, JP;
Shohroh Mochida, Osaka, JP;
Yoshihiko Kanayama, Hyogo, JP;
Yusuke Kusaka, Osaka, JP;
Masami Ito, Osaka, JP;
Takanori Kikuchi, Nagano, JP;
Abstract
Provided a light guide () including side surfaces on which light is incident, a reflection prism surface having plural prisms () on which light is reflected, and a light emitting surface from which the light is emitted, in which the reflection prism surface includes a first region (PA) in which a pitch of the prisms () varies and a second region (TA) in which a depth of the prisms () varies. In the light guide (), the first region is arranged in the side surface on which the light is incident, and a second region (TA) is arranged adjacent to the first region and in an inward side of the light guide ().