Optical film

This optical film is provided with a glass film having a thickness of 50 [mu] m or more and 150 [mu] m or less and having cracks having a length of 20 [mu] m or more at the ends thereof, and a polarizing plate having a polarizer and a protective film disposed on at least one surface of the polarizer, the absolute value of the difference between the dependent variable in the MD direction and the dependent variable in the TD direction in a constant-temperature and constant-humidity environment at a temperature of 60 DEG C and a humidity of 90% is 0-40 * 10 (inclusive). 本光学薄膜包括玻璃薄膜和偏光板，其中，所述玻璃薄膜的厚度为50μm以上且150μm以下，在所述玻璃薄膜的端部具有长度为20μm以上的裂纹，所述偏光板具有偏光片、以及配置在所述偏光片的至少一个表面上的保护薄膜，所述偏光板的在温度为60℃且湿度为90％的恒温恒湿环境下的MD方向的应变量与TD方向的应变量之差的绝对值为0以上且40×10-6以下。