MANUFACTURING METHOD FOR OPTICAL FILM

摘要

[Problem] An optical film manufacturing method is provided which is able to hold down variations in film thickness in an optical function layer, even when the optical function layer is nanometers thin. [Solution] The manufacturing method is for optical film in which at least one optical function layer with a thickness from 1 to 1,000 nm has been formed on a substrate. This manufacturing method includes a step (1) in which an application liquid containing a high polymer is shear-processed at a shearing velocity equal to or greater than 1,000 (1/s), and a step (2) in which the application liquid obtained in step (1) is applied to a substrate to form a coating film.