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. 16, 2016
Filed:
Jul. 17, 2009
Mitsuru Inoue, Okayama, JP;
Amane Koike, Saitama, JP;
Akiko Tomita, Minamisaitama-Gun, JP;
Hiroshi Kojima, Kawagoe, JP;
Akinobu Ushiyama, Moriya, JP;
Satoshi Goishihara, Kazo, JP;
Mitsuru Inoue, Okayama, JP;
Amane Koike, Saitama, JP;
Akiko Tomita, Minamisaitama-Gun, JP;
Hiroshi Kojima, Kawagoe, JP;
Akinobu Ushiyama, Moriya, JP;
Satoshi Goishihara, Kazo, JP;
Dai Nippon Printing Co., Ltd., Shinjuku-Ku, JP;
Abstract
An optical sheet including a fly-eye lens is provided, which exhibits excellent optical functions, including desired light condensing ability, light diffusing ability and an ability for rendering a light source image substantially invisible, and can be produced with high reproducibility. The optical sheet includes a sheet-like main body, first unit shaped elements arranged on one surface of the main body and together constituting the fly-eye lens; and second unit shaped elements arranged on the one surface of the main body and extending in parallel with one direction on the sheet surface of the main body. The first unit shaped elements are arranged, with a space provided therebetween, on the one surface of the main body, while the second unit shaped elements are arranged between the first unit shaped elements on the one surface of the main body.