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1. US20140362440 - Iodine-based polarizer, polarizing plate, optical film, and image display device

官庁 アメリカ合衆国
出願番号 14366869
出願日 16.11.2012
公開番号 20140362440
公開日 11.12.2014
特許番号 10025014
特許付与日 17.07.2018
公報種別 B2
IPC
G02B 5/30
G物理学
02光学
B光学要素,光学系,または光学装置
5レンズ以外の光学要素
30偏光要素
G02B 1/08
G物理学
02光学
B光学要素,光学系,または光学装置
1使用物質によって特徴づけられた光学要素;光学要素のための光学的コーティング
08偏光物質で作られたもの
CPC
G02B 1/08
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
1Optical elements characterised by the material of which they are made
08made of polarising materials
G02B 5/3033
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5Optical elements other than lenses
30Polarising elements
3025Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
3033in the form of a thin sheet or foil, e.g. Polaroid
G02B 5/305
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5Optical elements other than lenses
30Polarising elements
3025Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
3033in the form of a thin sheet or foil, e.g. Polaroid
3041comprising multiple thin layers, e.g. multilayer stacks
305including organic materials, e.g. polymeric layers
出願人 NITTO DENKO CORPORATION
発明者 Muniridin Yasen
Daisuke Ogomi
Yuuji Saiki
代理人 Westerman, Hattori, Daniels & Adrian, LLP
優先権情報 2012-000709 05.01.2012 JP
2012229953 17.10.2012 JP
発明の名称
(EN) Iodine-based polarizer, polarizing plate, optical film, and image display device
要約
(EN)

An iodine-based polarizer includes a polyvinyl alcohol-based film; and iodine adsorbed and oriented in the polyvinyl alcohol-based film, the iodine-based polarizer having be undergone a treatment with a treatment bath containing at least one reducing agent, the iodine-based polarizer containing an oxidized form of the reducing agent, wherein the total content of the reducing agent and the oxidized form is from 0.06×10−6 mol/g to 1.6×10−6 mol/g. The iodine-based polarizer has a sufficiently high level of transmittance, degree of polarization, and other optical properties and can suppress light leakage in short-wavelength.