| abstract |
A polymer film comprising at least one polymer as the main ingredient thereof, and at least one compound that satisfies relational formulae (1) and (2), in an amount of from 0.2 to 20% by mass of said at least polymer is disclosed. λmax indicates the maximum absorption wavelength (unit: nm) of the compound, λ 1/2 (λmax<λ 1/2 ) indicates the wavelength at which the absorption intensity at λmax is ½. n 360 nm≦λmax≦400 nm (1)n n λ 1/2 −λmax≦20 nm (2) |