POLARIZING FILM, OPTICAL APPARATUS AND METHOD FOR MANUFACTURING POLARIZING FILM

摘要

A polarizing plate of the present invention comprises a polarizer having an orientation degree of equal to or more than 15 represented by a following formula (1), and a high orientation polarizer can be produced by stretching a polyvinyl alcohol film having a crystallinity degree of at least 0.40. The polarizing plate of the present invention, a manufacturing method thereof, and an optical apparatus having a polarizing plate represent high transmittance and high polarization characteristics and include high white brightness, high contrast, and high durability. The orientation degree is calculated by (RD/RPVA)× 100. According to the same, the RPVA is orientation of the polyvinyl alcohol, and RD is the orientation of the dichroic substance.