| abstract |
An optical film having excellent heat resistance and mechanical strength is provided. The method includes a step of applying a photopolymerizable liquid crystal composition on a substrate, aligning the substrate by heat treatment, and fixing the alignment state by irradiation with actinic rays. T0 (° C.), Tm−T 0> 30 ° C., where Tm (° C.) is the maximum temperature of the substrate during irradiation. [Selection figure] None |