To provide a method for producing a highly light-transmitting film having high surface hardness and not deteriorating the performance even with the passage of time by the use of a fluorine-based material.

This method for producing the highly light-transmitting film is characterized by coating a substrate with a silicate compound treated with a silane coupling agent having a fluorochain and then curing the coating. Another objective coating composition comprises (A) a silicate compound treated with the silane coupling agent having the fluorochain, (B) a photocuring material, (C) a photoinitiator, and (D) a silicate curing catalyst.