Optical film and image display device

A foldable image display device comprising:

• a display panel;
• an optical film on an observer's side of the display panel;
• and
• a polarizer between the display panel and the optical film,
• wherein the optical film comprises
• a glass base material having a thickness of 30 μm or more and 200 μm or less,
• a resin layer adjacent to the glass base material, and
• a hard coat layer, wherein
• the resin layer has a Young's modulus of 70 MPa or more and 1200 MPa or less at 25° C. and a thickness of 100 μm or more and 500 μm or less,
• the optical film has a total light transmittance of 90% or more, the optical film has a haze of 1% or less,
• the glass base material, the resin layer, and the hard coat layer are laminated in the order of
• the resin layer, the glass base material, and the hard coat layer or
• the glass base material, the resin layer, and the hard coat layer, from a display panel side to an observer's side,
• an observer's side surface of the optical film is a surface of the image display device,
• the resin layer contains a silicone resin having an aromatic group, and
• the resin layer contains 1 part by mass or more and 6 parts by mass or less of an ultraviolet absorber relative to 100 parts by mass of solids in the resin layer.