| abstract |
An object of the present invention is to provide a laminated film that periodically changes the wavelength of reflected light by periodically changing the film thickness. A laminated film comprising at least five layers having a structure in which two or more kinds of thermoplastic resins are regularly arranged in a thickness direction, wherein the thickness of the film is periodically changed in a longitudinal direction or a width direction of the film. A changed laminated film. [Selection diagram] None |