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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 9765941 B1

PDFFull Text
Date of Patent:
Sep. 19, 2017

Filed:

Nov. 14, 2012

Optical film, surface light emitting body, and method for producing optical film

Applicant:

Mitsubishi Rayon Co., Ltd., Tokyo, JP;

Inventor:

Daichi Okuno, Kanagawa, JP;

Assignee:

Mitsubishi Chemical Corporation, Tokyo, JP;

Attorney:

Morgan, Lewis & Bockius LLP

Primary Examiner:

Mathieu Vargot

Int. Cl.
CPC ...
B29D 11/00 (2006.01); F21V 5/00 (2015.01); G02B 3/00 (2006.01); G02B 5/02 (2006.01); B29C 41/00 (2006.01); B29C 41/26 (2006.01); B29C 41/32 (2006.01); G02B 1/04 (2006.01); H01L 51/52 (2006.01); B29K 25/00 (2006.01); B29K 33/00 (2006.01); B29K 35/00 (2006.01); B29K 83/00 (2006.01); B29K 105/24 (2006.01); B29L 11/00 (2006.01);
U.S. Cl.
CPC ...
F21V 5/004 (2013.01); B29C 41/003 (2013.01); B29C 41/26 (2013.01); B29C 41/32 (2013.01); B29D 11/00355 (2013.01); B29D 11/00365 (2013.01); B29D 11/00788 (2013.01); G02B 1/041 (2013.01); G02B 3/0043 (2013.01); G02B 3/0056 (2013.01); G02B 5/021 (2013.01); G02B 5/0278 (2013.01); B29K 2025/04 (2013.01); B29K 2033/08 (2013.01); B29K 2035/00 (2013.01); B29K 2083/00 (2013.01); B29K 2105/246 (2013.01); B29L 2011/0016 (2013.01); G02B 2207/113 (2013.01); H01L 51/5275 (2013.01);
Abstract

An optical film has a plurality of aligned convex microlenses, each of which has a region α and a region β, region β forming the outer part of the convex shape of the microlens and positioned so as to cover region α. Both region α and region β contain a resin, and the refractive index of the resin in region α is higher than the refractive index of the resin in region β; region β contains fine particles, and region α contains fine particles, and the content of the fine particles contained in region α is lower than the content of the fine particles contained in region β; or region α contains fine particles, and region β contains fine particles, and the content of the fine particles contained in region α is higher than the content of the fine particles contained in region β.

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