Polarizer and the optical alignment device

The present invention, while having a high extinction ratio for light of short wavelength, such as ultraviolet region, even if the incident angle of light incident on the polarizer is increased, the rotation of the polarization axis of the polarized light to provide a polarizer capable of preventing a main object. The thin line of the polarizer, the effect of improving the extinction ratio of the polarized light emitted from the polarizer, the polarization axis of the polarized light emitted from the polarizer is composed of a polarization material layer having both a working prevents the rotation it allows to solve the above problems.