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. 31, 2017
Filed:
Jan. 28, 2015
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Makoto Kai, Kyoto, JP;
Yoshihiko Kanayama, Hyogo, JP;
Hiro Aoki, Osaka, JP;
Tomoyuki Ogata, Osaka, JP;
Abstract
A lighting apparatus includes: a light guide which is tubular and includes a light entry portion in one end in a tube axis direction; and a light source arranged corresponding to the light entry portion. The light entry portion includes a light redirecting portion which changes a traveling direction of light entering from the first light source to a direction that is substantially parallel to the tube axis direction of the light guide. The light guide includes: plural light-emitting faces which are ring-shaped and formed concentrically in the other end in the tube axis direction of the light guide; and a non light-emitting face which is wall-like and formed along the tube axis direction of the light guide, at a border of adjacent ones of the light-emitting faces.