OPTICAL FILTER, AND EVALUATION DEVICE OF COLOR FILTER

摘要

PROBLEM TO BE SOLVED: To provide an optical filter allowing evaluation of color characteristics of a color filter that can obtain uniform emission intensity spectrum at wavelengths of 430 nm to 630 nm by combining the filter with a halogen lamp and the like, and has high reliability.SOLUTION: The optical filter includes a single layer film containing blue coloring agent and red coloring agent, in which a weight ratio of the blue coloring agent to the red coloring agent satisfies blue:red=95:5-20:80.