Abstract: A method is described for manufacturing an optical element (13) made of thermosetting plastic material comprising the steps of: a) positioning in a mould a first self-supporting layer (6) made of partially cross-linked thermosetting plastic material including reactive functional groups; b) forming, on at least one surface of the self-supporting layer (6), a second layer (12) including: i) a polymerisable material in liquid phase including: prepolymers and/or monomers including reactive functional groups capable of chemically reacting with the reactive functional groups of the self-supporting layer made of partially cross-linked thermosetting plastic material, a reactive component including functional groups capable of chemically reacting with the reactive functional groups of the prepolymers and/or of the monomers and optionally with the reactive functional groups of the self-supporting layer (6) made of partially cross-linked thermosetting plastic material; ii) at least one element adapted to modify the spec

Abstract: A multi-layer thin film is provided preferably for use with photochromic lenses, wherein the thin film comprises a plurality of layers, preferably including dielectric layers, selected and arranged so as to reflect less than about 6 percent of the UVA rays in a range of about 315 to 400 nm, more preferably about 350 to 380 nm. The thin film preferably has an activation value greater than 25%.

Abstract: A polarized optical element is disclosed comprising an upper portion and a lower portion defined at opposite parts with respect to a median line passing through the geometric center of the optical element, wherein: a) in the upper portion and at a distance of at least 10 mm from the median line the factor of luminous transmittance is between 3% and 20%; b) in the lower portion and at a distance of at least 10 mm from the median line the factor of luminous transmittance is between 15% and 65%; c) the ratio of the luminous transmittance measured in the lower portion at a distance of at least 10 mm below the median line and the luminous transmittance measured in the upper portion at a distance of at least 10 mm above the median line is not lower than 1.

Abstract: A polarized optical element is disclosed comprising an upper portion and a lower portion defined at opposite parts with respect to a median line passing through the geometric center of the optical element, wherein: a) in the upper portion and at a distance of at least 10 mm from the median line the factor of luminous transmittance is between 3% and 20%; b) in the lower portion and at a distance of at least 10 mm from the median line the factor of luminous transmittance is between 15% and 65%; c) the ratio of the luminous transmittance measured in the lower portion at a distance of at least 10 mm below the median line and the luminous transmittance measured in the upper portion at a distance of at least 10 mm above the median line is not lower than 1.

Abstract: An optical element is described comprising an optical part dyed so as to have a curve of the factor of spectral transmittance in a wavelength range comprised between 400 and 700 nm comprising: i) at least one relative maximum at a wavelength comprised between 400 and 510 nm, and ii) at least one relative minimum at a wavelength comprised between 510 and 625 nm, wherein the ratio between the value of the factor of spectral transmittance at said at least one relative maximum and the value of the factor of spectral transmittance at said at least one relative minimum is of at least 1.3, and wherein the ratio between the value of the factor of spectral transmittance at a wavelength of 700 nm and the value of the factor of spectral transmittance at said at least one relative minimum is of at least 3.0.

Abstract: A polarized optical element comprising a polarized optical part is dyed so that the optical part exhibits a curve of spectral transmittance in a wavelength range comprised between 400 and 700 nm comprising: i) at least one relative maximum at a wavelength comprised between 400 and 510 nm, and ii) at least one relative minimum at a wavelength comprised between 510 to 625 nm, wherein the ratio between the value of the factor of spectral transmittance at said at least one relative maximum and the value of the factor of spectral transmittance at said at least one relative minimum is of at least 1.3, and wherein the ratio between the value of the factor of spectral transmittance at a wavelength of 700 nm and the value of the factor of spectral transmittance at said at least one relative minimum is of at least 3.0.

Abstract: A lens is provided comprising a substrate, a first dielectric layer comprising a first dielectric material uniformly covering an outer surface of said substrate, a second dielectric layer comprising a second dielectric material uniformly covering said first metal layer, a metal layer comprising a metal material gradiently covering only a portion of said second dielectric layer and a third dielectric layer formed of a third dielectric material gradiently covering said metal layer.

Abstract: A lens is provided comprising a substrate, a first metal layer comprising a first metal material uniformly covering an outer surface of said substrate, a first dielectric layer comprising a first dielectric material uniformly covering said first metal layer, a second metal layer comprising a second metal material gradiently covering only a portion of said first dielectric layer and a second dielectric layer formed of a second dielectric material gradiently covering said second metal layer.

Abstract: A lens is provided comprising a substrate, a metal layer comprising a metal material uniformly covering an outer surface of said substrate, a first dielectric layer comprising a first dielectric material uniformly covering said metal layer and a second dielectric layer comprising a second dielectric material gradiently covering only a portion of said first dielectric layer.

Abstract: A lens is provided comprising a substrate, a first metal layer comprising a first metal material uniformly covering an outer surface of said substrate, a first dielectric layer comprising a first dielectric material uniformly covering said first metal layer, a second metal layer comprising a second metal material gradiently covering only a portion of said first dielectric layer and a second dielectric layer formed of a second dielectric material gradiently covering said second metal layer.

Abstract: A lens is provided comprising a substrate, a first dielectric layer comprising a first dielectric material uniformly covering an outer surface of said substrate, a second dielectric layer comprising a second dielectric material uniformly covering said first metal layer, a metal layer comprising a metal material gradiently covering only a portion of said second dielectric layer and a third dielectric layer formed of a third dielectric material gradiently covering said metal layer.

Abstract: A multi-layer thin film is provided preferably for use with photochromic lenses,wherein the thin film comprises a plurality of layers, preferably including dielectric layers, selected and arranged so as to reflect less than about 6 percent of the UVA rays in a range of about 315 to 400 nm, more preferably about 350 to 380 nm. The thin film preferably has an activation value greater than 25%.

Abstract: A lens is provided comprising a substrate, a metal layer comprising a metal material uniformly covering an outer surface of said substrate, a first dielectric layer comprising a first dielectric material uniformly covering said metal layer and a second dielectric layer comprising a second dielectric material gradiently covering only a portion of said first dielectric layer.

Abstract: A lens having a substrate, a metal layer uniformly covering one side of the substrate, a first dielectric layer uniformly covering the metal layer, and a second dielectric layer gradiently covering only a portion of the first dielectric layer.

Abstract: The present invention is concerned with a new family of optical element for use in eyeglasses, visors, masks and screens which produce a new chromatic effect through a vacuum deposition of two or plus layers of dielectric substances and methods of manufacturing the same. These new filters combine some colored reflection on the outer surface with a uniform transmission looking through the lens so complying the European Standard in terms of luminous transmittance uniformity.

Abstract: A lens having a substrate, a metal layer uniformly covering one side of the substrate, a first dielectric layer uniformly covering the metal layer, and a second dielectric layer gradiently covering only a portion of the first dielectric layer.

Abstract: An optical element is disclosed comprising an upper portion (9) and a lower portion (8) defined in opposite parts with respect to a median line (x--x) passing through the geometric center (C.sub.1, C.sub.2) of the optical element, wherein the factor of luminous transmittance is between 30% and 80% in the lower portion (8) and between 3% and 40% in the upper portion (9). Advantageously, furthermore, the curve of spectral transmittance as a function of the wavelength in the lower portion (8) and at a distance of at least 10 mm from the median line (x--x) is such as to show: a minimum in a wavelength range of from 495 to 510 nm, ii) an increase in spectral transmittance at wavelengths lower than 495 nm and higher than 510 nm, iii) a maximum at a wavelength lower than 440 nm, iv) a reduction in the spectral transmittance as the wavelength decreases starting from said maximum.