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. 11, 2015
Filed:
Jan. 11, 2013
Optical layered body, method for producing optical layered body, polarizer, and image display device
Dai Nippon Printing Co., Ltd., Tokyo, JP;
Toshiyuki Tanimura, Tokyo, JP;
Keiko Tazaki, Tokyo, JP;
Yu Morioka, Tokyo, JP;
Koji Hashimoto, Tokyo, JP;
Kenji Ueno, Tokyo, JP;
Dai Nippon Printing Co., Ltd., Tokyo, JP;
Abstract
The present invention provides an optical layered body that has multiple laminated layers of which the refractive indexes are greatly different. The optical layered body can suitably prevent interfacial reflection and interference fringes attributed to the reflection in the interfaces between the layers. The optical layered body has a light-transmitting substrate, and at least an optical functional layer (1) on one surface of the substrate, wherein the refractive index of the optical functional layer (1) in the thickness direction continuously increases from the surface on the light-transmitting substrate side to the surface opposite to the light-transmitting substrate side to show a sigmoid curve.