Abstract: In an optical filter for sunglasses, having a transmittance of less than 20% for light wavelengths from 400 nm to 650 nm, the transmission spectrum comprises a local transmission maximum in each of the light wavelength ranges between 440 nm and 470 nm and also between 570 nm and 590 nm and a local transmission maximum in the light wavelength range between 600 nm and 620 nm, wherein the transmittance below the connecting line of the local transmission maximum between 440 nm and 470 nm and the local transmission maximum between 570 nm and 590 nm has an essentially convex overall curve with a breadth of variation less than 8%.

Abstract: In an optical filter for sunglasses, having a transmittance of less than 20% for light wavelengths from 400 nm to 650 nm, the transmission spectrum (1, 2, 3) comprises a local transmission maximum (5, 6, 7) or (9, 10, 11), respectively, in each of the light wavelength ranges between 440 nm and 470 nm (4) and also between 570 nm and 590 nm (8) and a local transmission maximum (13, 14) in the light wavelength range between 600 nm and 620 nm (12), wherein the transmittance below the connecting line of the local transmission maximum (5, 6, 7) between 440 nm and 470 nm and the local transmission maximum (9, 10, 11) between 570 nm and 590 nm has an essentially convex overall curve (16) with a breadth of variation less than 8%.

Abstract: The present invention relates to a new ocular lens made of a composite material for optical use, as well as its method of production. This material consists of a substrate (1) having a convex face facing the observer on which is deposited a layer (2) of anti-scratch varnish, and a concave face facing the wearer on which are deposited successively a layer (3) of anti-scratch varnish, a layer (4) made of a metallic film, a layer (5) made of precious metal, a layer (6) made of a metallic film, a metal oxide layer (7), a layer (8) of a metallic film and a layer (9) of metal oxide. Application to solar or ophthalmic lenses or shields.