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:
May. 27, 2014
Filed:
Apr. 27, 2010
Jyunpei Matsuzaki, Hyogo, JP;
Shin-ichi Wakabayashi, Osaka, JP;
Seiji Nishiwaki, Hyogo, JP;
Tatsuya Nakamura, Osaka, JP;
Jyunpei Matsuzaki, Hyogo, JP;
Shin-ichi Wakabayashi, Osaka, JP;
Seiji Nishiwaki, Hyogo, JP;
Tatsuya Nakamura, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A transparent sheet for use with a light emitting body with one of surfaces of the transparent sheet being adjacent to the light emitting body, wherein the other surface of the sheet is divided into a plurality of minute regions δ, a largest inscribed circle of the minute regions δ having a diameter from 0.2 μm to 1.5 μm, each of the minute regions δ being adjoined by and surrounded by two or more other ones of the plurality of minute regions δ, the plurality of minute regions δ include a plurality of minute regions δwhich are randomly selected from the plurality of minute regions δ so as to constitute 40% to 98% of the minute regions δ and a plurality of minute regions δwhich constitute the remaining portion of the minute regions δ, the minute regions δare provided with a first tiny element which has thickness d and effective refractive index n, and the minute regions δare provided with a second tiny element which has thickness d and effective refractive index n, nbeing greater than n.