Patent ID: 8000012
Filing Date: 2011-08-16
Classification: G02B

Abstract:
1. An optical multilayer film comprising: a base material formed of polyester having a refractive index of η1; a first adhesion layer having a refractive index of η2 on said base material; a second adhesion layer having a refractive index of η3 on said first adhesion layer; and a surface layer having a refractive index of η4 on said second adhesion layer, wherein said η1, η2, η3 and η4 satisfy a formula (1), wherein d1 (nm) as a thickness of said first adhesion layer and said η2 satisfy a formula (4), and d2 (nm) as a thickness of said second adhesion layer and said η3 satisfy a formula (5), at a wavelength λ of visible light in a range of 550 nm to 600 nm,