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. 25, 2004
Filed:
Nov. 22, 2002
Takuya Matsunaga, Ibaraki, JP;
Seiji Kondo, Ibaraki, JP;
Atsushi Kitagawa, Ibaraki, JP;
Takashi Shouda, Ibaraki, JP;
Nitto Denko Corporation, Osaka, JP;
Abstract
An optical diffusion sheet comprising a transparent substrate and an optical diffusion layer having fine concavo-convex shape on a surface, wherein 60° glossiness of a surface of the fine concavo-convex shape is 70% or less, and a haze value of the optical diffusion sheet is 30% or more, and in a viewing display equipped with an optical element comprising the optical diffusion sheet provided thereto, following conditions; C1/C0≧0.2, C2/C0≧0.1, C3/C0≧0.1, are satisfied, as C0 when surface illumination is 0 lux, as C1 when surface illumination is 500 lux, as C2 when surface illumination is 1000 lux, and as C3 when surface illumination is 2000 lux., prevent reflection from outside environment, is excellent antiglare property, and suppress whitish display in an image viewing display surface to give an excellent clearness, and further screen glare.