Patent ID: 8958155
Filing Date: 2015-02-17
Classification: C04B,C09D,G01N,G02B,Y10T

Abstract:
1. An optical element comprising a lens or a prism, having a light-shielding film on an outer portion, wherein the light-shielding film for the optical element has an average thickness of 2 μm or more and 30 μm or less, wherein the light-shielding film comprise a resin, a colorant and (i) non-black particles having an average particle diameter of 100 nm or less and a refractive index (nd) of 2.2 or more or (ii) inorganic black particles having an average particle diameter of 100 nm or less and a refractive index (nd) of 2.2 or more and 3.5 or less, and wherein the average of extinction coefficient of the whole light-shielding film for light having wavelengths ranging from 400 to 700 nm is 0.03 or more and 0.15 or less.