Polarizer, method for manufacturing the same, optical film and image display
AssigneeNitto Denko Corporation
InventorsMariko Hirai, Takashi Kamijo, Minoru Miyatake
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Abstract
A polarizer of the present invention is composed of a film comprising a structure in which fine metallic particles is dispersed in a polymer matrix is characterized in that a polymer forming the polymer matrix is a translucent polymer having a transmittance of 88% or more when measured thereof with a thickness of 1 mm and the film is uniaxially stretched. The polarizer is good in heat resistance and transmittivity.
Claims22
A polarizer composed of a film comprising a structure in which fine metallic particles is dispersed in a polymer matrix,
- wherein a polymer forming the polymer matrix is a translucent polymer having a transmittance of 88% or more when measured thereof with a thickness of 1 mm and the film is uniaxially stretched.
A polarizer in which fine metallic particles is dispersed in a matrix formed with a liquid crystalline material.
A polarizer having an absorption spectrum with an absorption peak at a given wavelength, measured when polarized light incidences thereon,
- wherein if an azimuth of an incident polarization plane is altered relative to the polarizer, the absorption peak wavelength shifts in accordance with an alteration in the azimuth.
A polarizer in which in a case where an azimuth of the incident polarization plane relative to the polarizer is altered, if an azimuth of the incident polarization plane is 0 degree when an absorption peak wavelength of an absorption spectrum that is measured is the longest wavelength, which is referred to as λ1, by definition,
- if an azimuth of the polarization plane is gradually increased from 0 degree, a value of the absorption peak wavelength shifts to the short wavelength side in accordance with the increase and
- when an azimuth of the incident polarization plane is 90 degrees, a value of the absorption peak wavelength is the shortest wavelength, which is referred to as λ2, by definition.
Dependencies are inferred from the claim text.