| 摘要 |
[Problem] To develop a polarizing element exhibiting excellent polarizing properties and high durability. [Solution] A polarizing element containing a polyvinyl alcohol resin or a derivative thereof, and a dichroic dye, and formed from a stretched film, wherein at least one of the dichroic dyes is characterized by being an azo compound represented by formula (1), or a copper complex of said azo compound. (In the formula, R1 and R2 each independently represent a hydrogen atom, a C1-4 alkyl group, a C1-4 alkoxy group, a sulfo group, a C1-4 alkoxy group having a sulfo group, or a halogen atom.) |
