POLARIZER, METHOD FOR PRODUCING THE SAME, POLARIZING PLATE, OPTICAL FILM AND IMAGE DISPLAY

摘要

PROBLEM TO BE SOLVED: To provide a polarizer having a good hue and good durability, a method for producing the same, a polarizing plate, an optical film and an image display.

SOLUTION: The polarizer comprises a polyvinyl alcohol film subjected to at least iodine dyeing and uniaxial stretching. A simplex transmittance of the polarizer is ≥43%, a degree of polarization is ≥99.9% and a dichroic ratio calculated from a parallel transmittance (Tp) and a cross transmittance (Tc) at a wavelength of 440 nm is ≥30.

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