Light-polarizing film
AssigneeSumitomo Chemical Company, Limited
InventorNarutoshi Hayashi
Life of this patent
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Abstract
A light-polarizing film is provided which possesses a light transmittance of not more than 0.3% wavelengths of from 430 nm to 500 nm inclusive when irradiated with a linearly polarized light with a vibration plane parallel to an absorption axis of said film, and a light transmittance of not less than 77% at wavelengths of from 430 nm to 500 nm inclusive when irradiated with a linearly polarized light with a vibration plane perpendicular to the absorption axis of said film. When a light-polarizing plate comprising the light polarizing film is applied to the liquid crystal panel for blue of a liquid crystal projector, the obtained liquid crystal projector displays images featuring bright and 15 natural color tones.
Claims13
A light-polarizing film containing a dichroic azo-based dye and possessing a light transmittance of not more than 0.3% at wavelengths of from 430 nm to 500 nm inclusive when irradiated with a linearly polarized light with a vibration plane parrallel to an absorption axis of said film, and a light transmittance of not less than 77% at wavelengths of from 430 nm to 500 nm inclusive when irradiated with a linearly polarized light with a vibration plane perpendicular to the absorption axis of said film.
A light polarizing plate:
- comprising a light-polarizing film containing a dichroic azo-based dye and which possesses a light transmittance of not more than 0.3% at wavelengths of from 430 nm to 500 nm inclusive when irradiated with a linearly polarized light with a vibration plane parallel to an absorption axis of said film and a light transmittance of not less than 77% at wavelengths of from 430 nm to 500 nm inclusive when irradiated with a linearly polarized light with a vibration plane perpendicular to the absorption axis of said film;
- and
- possessing a surface reflectance of not more than 1% at wavelengths of from 430 nm to 500 nm inclusive.
A light-polarizing plate containing a dichroic azo-based dye and possessing a light transmittance of not more than 0.3% at wavelengths of from 430 nm to 500 nm inclusive when irradiated with a linearly polarized light with a vibration plane parallel to an absorption axis, a light transmittance of not less than 77% at wavelengths of from 430 nm to 500 nm inclusive when irradiated with a linearly polarized light with a vibration plane perpendicular to the absorption axis, and a surface reflectance of not more than 1% at wavelengths of from 430 nm to 500 nm inclusive.
A light-polarizing film containing a dichroic azo-based dye and possessing a light transmittance of not more than 0.3% at a wavelength of 440 nm when irradiated with a linearly polarized light with a vibration plane parallel to an absorption axis of the film, and a light transmittance of not less than 77% at wavelengths of from 430 nm to 500 nm inclusive when irradiated with a linearly polarized light with a vibration plane perpendicular to the absorption axis of the film.
Dependencies are inferred from the claim text.