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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.:

US 8992064 B1

PDFFull Text
Date of Patent:
Mar. 31, 2015

Filed:

Mar. 30, 2012

Planar illumination device and method of producing same

Applicants:

Tomotaka Horikawa, Nagano, JP;

Masahito Totsuka, Nagano, JP;

Shinji Kawai, Nagano, JP;

Satoshi Kawashima, Nagano, JP;

Inventors:

Tomotaka Horikawa, Nagano, JP;

Masahito Totsuka, Nagano, JP;

Shinji Kawai, Nagano, JP;

Satoshi Kawashima, Nagano, JP;

Assignee:

Minebea Co., Ltd., Nagano, JP;

Attorneys:

Carrier Blackman & Associates, P.C.

William D. Blackman

Joseph P. Carrier

Primary Examiner:

Sikha Roy

Int. Cl.
CPC ...
F21V 7/04 (2006.01); F21V 8/00 (2006.01); F21V 13/08 (2006.01); G02F 1/1335 (2006.01);
U.S. Cl.
CPC ...
G02F 1/133608 (2013.01); G02B 6/0055 (2013.01); G02B 6/0088 (2013.01); G02B 6/0091 (2013.01); G02F 1/133605 (2013.01); G02F 2201/08 (2013.01);
Abstract

A planar illumination device includes a light source unit, including a substantially planar emitting surface, configured to emit light to illuminate a substantially planar object, and a frame, formed in a frame shape enclosing the light source unit, disposed on an outer circumferential side of the light source unit, configured to hold the light source unit. The frame includes a reflecting part configured to reflect the light, and an absorbing part, formed integral with at least a part of an outer circumferential surface of the reflecting part, configured to absorb the light. The reflecting part and the absorbing part include joint interface therebetween that is inclined to a direction vertical to the emitting surface.

Find Patent Forward Citations

Horikawa, Tomotaka. (2015). Planar illumination device and method of producing same (U.S. Patent No. 8992064). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8992064

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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