Patent ID: 9651713
Date: 2017-05-16
CPC Classifications: G02B,G02C

Claim:
1. An optical product comprising an optical multilayer film on an optical product base, wherein a color of reflected light of the optical multilayer film satisfies a condition of 0.27≦x≦0.31 and 0.30≦y≦0.36 in a chromaticity diagram (x,y,Y) of a CIE color system, wherein reflectance is always 1 percent or less in a wavelength range from 420 nanometers to 680 nanometers, both inclusive, wherein Y is 0.5 percent or less, wherein the optical multilayer film has a total of seven layers, in which a first layer is counted from an optical product base side, and odd layers are low refractive index layers and even layers are high refractive index layers, wherein an optical film thickness of a sixth layer is greater than or equal to 0.530λ, and not greater than 0.605λ when λ represents any value in a design wavelength range from 480 nanometers to 520 nanometers, both inclusive, and wherein a third layer of the optical multilayer film has an optical film thickness that is greater than or equal to 0.160λ, and not greater than 0.296λ.