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. 04, 2019
Filed:
Dec. 03, 2015
Applicant:
Sharp Kabushiki Kaisha, Sakai, Osaka, JP;
Inventors:
Assignee:
SHARP KABUSHIKI KAISHA, Sakai, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/00 (2006.01); F21V 8/00 (2006.01); G02F 1/1333 (2006.01); G02F 1/1335 (2006.01); G02F 1/1362 (2006.01); G02F 1/1368 (2006.01); G02F 1/1337 (2006.01);
U.S. Cl.
CPC ...
G02B 6/0055 (2013.01); G02B 6/0036 (2013.01); G02B 6/0053 (2013.01); G02B 6/0061 (2013.01); G02B 6/0085 (2013.01); G02B 6/0091 (2013.01); G02F 1/1368 (2013.01); G02F 1/13338 (2013.01); G02F 1/133308 (2013.01); G02F 1/133502 (2013.01); G02F 1/133514 (2013.01); G02F 1/136286 (2013.01); G02B 6/009 (2013.01); G02B 6/0038 (2013.01); G02B 6/0088 (2013.01); G02F 1/1337 (2013.01); G02F 1/133512 (2013.01); G02F 1/133528 (2013.01); G02F 2001/13629 (2013.01); G02F 2001/133302 (2013.01); G02F 2001/133331 (2013.01); G02F 2201/123 (2013.01);
Abstract
A lighting device includes a light guide plate, a plurality of LEDs positioned to project light into a first side surface of the light guide plate, a reflection sheet facing a bottom surface of the light guide plate, a plurality of reflective elements on a light exit surface of the light guide plate opposite the bottom surface and extending in a direction parallel to the first side surface, and a plurality of convex elements on the bottom surface of the light guide plate. The density of the convex elements increases with increasing distance from the light source.