| abstract |
An object of the present invention is to provide an optical film having thermochromic properties capable of adjusting the near-infrared shielding rate according to the temperature environment, low haze, and excellent crack resistance and adhesion even in long-term use, and a method for producing the same. The optical film of the present invention is an optical film having an optical function layer on a transparent substrate, and the optical function layer at least contains: microparticles containing vanadium dioxide and a binder resin, and is characterized in that the above-mentioned The vanadium dioxide-containing microparticles have a number average particle diameter of all particles including primary particles and secondary particles of less than 200 nm. |