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:
Aug. 05, 2014
Filed:
Oct. 29, 2010
Akinobu Ushiyama, Moriya, JP;
Akiko Tomita, Mihara, JP;
Satoshi Goishihara, Kazo, JP;
Hiroshi Kojima, Kawagoe, JP;
Takayuki Shimada, Saitama, JP;
Mitsuhiro Hamashima, Shinjuku-Ku, JP;
Kazuo Matsufuji, Nerima-Ku, JP;
Kazuki Tanaka, Kita-Ku, JP;
Akinobu Ushiyama, Moriya, JP;
Akiko Tomita, Mihara, JP;
Satoshi Goishihara, Kazo, JP;
Hiroshi Kojima, Kawagoe, JP;
Takayuki Shimada, Saitama, JP;
Mitsuhiro Hamashima, Shinjuku-Ku, JP;
Kazuo Matsufuji, Nerima-Ku, JP;
Kazuki Tanaka, Kita-Ku, JP;
Dai Nippon Printing Co., Ltd., Shinjuku-Ku, JP;
Abstract
An optical sheet having both of an excellent light condensing function and an excellent scratch resistance is provided. An optical sheet includes: a sheet-like main body; at least three or more first unit shaped elements arranged on one surface of the main body; and second unit shaped elements arranged on the one surface of the main body. Each of the second unit shaped elements extend in parallel with in one direction on a sheet surface of the main body. A height Hof each of the first unit shaped elements from the one surface is higher than a height Hof each of the second unit shaped elements. A rate of an area occupied by the first unit shaped elements on the one surface is not more than 10.0%, when observed along a normal direction nd relative to the one surface.