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.

Date of Patent:
May. 17, 2016

Filed:

Mar. 19, 2015
Applicant:

Nitto Denko Corporation, Ibaraki-shi, Osaka, JP;

Inventor:

Kazuya Fujioka, Osaka, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21S 11/00 (2006.01); G02B 19/00 (2006.01); B29D 11/00 (2006.01); E06B 9/24 (2006.01);
U.S. Cl.
CPC ...
F21S 11/007 (2013.01); B29D 11/00663 (2013.01); E06B 9/24 (2013.01); F21S 11/00 (2013.01); G02B 19/0028 (2013.01); G02B 19/0042 (2013.01); E06B 2009/2417 (2013.01); Y02B 20/70 (2013.01);
Abstract

An optical film includes a plurality of transparent layers configured to transmit light and a plurality of reflection layers configured to reflect light. The plurality of transparent layers are disposed at spaced intervals to each other in a first direction orthogonal to a thickness direction of the optical film; each of the plurality of reflection layers is interposed between the transparent layers that are next to each other of the plurality of transparent layers; and the plurality of transparent layers include a first transparent layer and a second transparent layer that has a smaller index of refraction than that of the first transparent layer.


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