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. 10, 2019
Filed:
Feb. 12, 2016
Sharp Kabushiki Kaisha, Sakai, Osaka, JP;
Hisashi Watanabe, Sakai, JP;
Ryuzo Yuki, Sakai, JP;
Shinya Kadowaki, Sakai, JP;
Mitsuhiro Murata, Sakai, JP;
Takeshi Ishida, Sakai, JP;
Takeshi Masuda, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, Osaka, JP;
Abstract
A lighting device includes a light guide plate () having a light exit surface (A) having a substantially circular shape and a light entrance surface (C) extending along an entire periphery of an outer edge of the light exit surface (A), an LED (A) opposite the light entrance surface (C), and an LED (A) that is opposite the light entrance surface (C) and is connected in parallel to the LED (A) and the LED (A) is arranged opposite from the LED (A) with having a center (C) of the light exit surface (A) therebetween.