POLARIZED LIGHT IRRADIATION DEVICE FOR OPTICAL ALIGNMENT

摘要

PROBLEM TO BE SOLVED: To provide a polarized light irradiation device for optical alignment capable of reducing the cost and achieving high extinction ratio of the polarization element.SOLUTION: A polarized light irradiation device for optical alignment 1 includes: a bar-like lamp 11 as a light source; a light source unit that emits ultraviolet rays; and a polarizing element part 20. The polarizing element part 20 outputs ultraviolet rays from the light source unit as a polarized light beam of the ultraviolet rays. The polarizing element part 20 includes two wire grid polarization elements 22 laminated in a direction where the ultraviolet rays are radiated and the ultraviolet rays are output as a polarized light beam.