Dual complementary two-color optics which enables a user to see true neutral color

摘要

A pair of dual complementary optics having a first lens and a second lens wherein the first lens has a gradient of a multiplicity of bands, the uppermost series of bands having a primary color embedded therein and the lowermost series of bands having a complementary secondary color embedded therein, the second lens having the inverse color embedded therein so that a primary color in the first lens is aligned with a secondary color in the second lens and a secondary color in the first lens is aligned with a primary color in the second lens. Each lens is darkest on top and lightest on the bottom. Each lens transmits more than 50% visible light in both wavelength ranges 440-550 nm and 550-750 nm.