METHOD FOR INSPECTING UNEVEN DYEING IN POLARIZING FILM USING THE UV/VISIBLE SPECTROSCOPY

摘要

The present invention is a method for inspecting a wave-shaped spot generated in an iodine staining process when a polarizing film is manufactured. The purpose of the present invention is to provide a method for analyzing the wave-shaped spot of the polarizing film which measures and quantitatively analyzes optical density of the polarizing film by using a UV/visible spectroscopy. [Reference numerals] (AA) Below 1 mm;(BB) Light source form;(CC) move by 0.5 mm and repeatedly measure