A cover glass includes a chemically strengthened glass including a first main surface having an area of 12,000 mm.sup.2 or larger and a second main surface, and an anti-fingerprint treated layer provided on or above the first main surface. The chemically strengthened glass has a depth of compressive stress layer DOL of 20 m or larger, has a tensile stress layer having a P.sub.2O.sub.5 content of 2 mol % or less, and has AB of 135 or larger, provided that, among oxide components constituting the tensile stress layer, a total concentration of Li.sub.2, Na.sub.2O, and K.sub.2O is A mol % and a concentration of Al.sub.2O.sub.3 is B mol %. The anti-fingerprint treated layer includes a surface having a frictional electrification amount, as determined by Method D described in JIS L1094:2014, of 0 kV or less and 1.5 kV or more.

An optical article includes a substrate with front and rear main faces, one main face coated with a columnar micro- or nano-structured coating. The substrate and optical article are transparent in at least a part of the visible region ranging from 380 to 780 nm, along at least one incidence angle. The columnar micro- or nano-structured coating includes an array of columns including each a core and an upper layer covering the core, the core and the upper layer being structurally and/or chemically different and have light absorbing properties with an extinction coefficient k 10-2 in the spectrum 250-2500 nm and are able to cause a change in transmission or in reflection of incident light through the optical article as a function of the angle of incidence of light. Also disclosed is a method for manufacturing an optical article including a columnar micro- or nano-structured coating.

A method for making a plasmonic mushroom array includes: forming a plurality of metal nano-islands each having nanometer-range dimensions on a surface of a glass substrate; and subjecting to the glass substrate having the plurality of metal nano-islands formed thereon to reactive ion etching such that the plurality of metal nano-islands are converted to a plurality of mushroom-shaped structures each having a metal cap supported by a pillar made of a material of the glass substrate and each having dimensions smaller than the dimensions of the nano-islands, the plurality of mushroom-shaped structures being arranged in a substantially regular pattern with intervals smaller than average intervals between the nano-islands, thereby forming the plurality of nano-scale mushroom-shaped structures on the glass substrate that can exhibit localized surface plasmon resonance.

A thin film optical lens and method for coating an optical substrate serves to apply alternating layers, with varying thicknesses, of a high index dielectric material and a low index dielectric material on first and second surfaces of an optical substrate. The high and low index dielectric materials are layered through thin film deposition. The low index dielectric material is SiO.sub.2. The high index dielectric material is ZrO.sub.2 and/or Indium Zinc Oxide. The spectral results from application of high and low index dielectric materials reduce infrared radiation, block HEV light transmission, and reduce backside ultraviolet reflections, while also increasing visible (ultraviolet) light transmission through the optical substrate. Thus, the layering of dielectric materials on the first surface of optical substrate reflects up to 40% of the infrared radiation; and the second surface of optical substrate transmits up to 99% of ultraviolet light in the wavelength range between 300 to 400 nanometers.

A method hardens an anti-reflection treatment deposited on a transparent substrate that includes a top surface and a bottom surface which extends remotely from the top surface. The anti-reflection treatment includes depositing at least one anti-reflection layer of at least one material on at least one of the top and bottom surfaces of the transparent substrate, bombarding the at least one top or bottom surface on which the at least one anti-reflection layer has been deposited using a singly-charged and/or multi-charged ion beam produced by a singly-charged and/or multi-charged ECR electron cyclotron resonance ion source. The method produces a transparent substrate having undergone an anti-reflection treatment such that at least one of the top and bottom surfaces of the transparent substrate is coated with at least one anti-reflection layer of at least one material, whereby ions are implanted in the at least one anti-reflection layer.

Surface having properties for reducing diffuse light due to water condensation, wherein the antifog means consist in atomic aggregates adhered to and dispersed over the surface, wherein the aggregates are selected among the transition metals and the silicon. It is also related to a method for obtaining a surface having properties for reducing diffuse light due to water condensation a wavelength selected in the range from 100 nm to 50 micrometers, comprising the steps of selecting the wavelength, obtaining a glass or polymer surface that has been subjected to optical polishing and adhering to the surface atomic aggregates which are selected among the transition metals and the silicon with a separation between them being lower than or having an order of the selected wavelength selected. Thus a durable antifogging surface is obtained.

An optical component according to an embodiment of the present invention includes a translucent substrate, one or more intermediate layers stacked on at least one of an incident surface and an exit surface of the substrate, and a surface layer stacked on an outermost layer of the one or more intermediate layers, the surface layer containing diamond-like carbon as a main component. At least one intermediate layer among the one or more intermediate layers contains silicon as a main component, and the intermediate layer containing silicon as a main component has an oxygen content of 10 atomic % or less.

Deadfront articles that include a tactile element formed on a first surface of a substrate and a visual element disposed on a second surface of the substrate opposite the first surface. The tactile element is positioned on the first surface of the substrate in a complimentary fashion to the visual element disposed on the second surface of the substrate. The tactile element may include a surface roughness portion having a surface roughness different than the surface roughness of an area bordering the surface roughness portion. The deadfront articles may be incorporated into an automobile interior to provide a visual and haptic display interface for a user.

A surface-treating agent including at least one perfluoro(poly)ether group containing silane compound of the formula (1): ##STR00001##
wherein each of symbols is as defined herein, wherein a number average molecular weight of the perfluoro(poly)ether group containing silane compound is 3000 or more and 6000 or less, and wherein 80 mol % or more of the perfluoro(poly)ether group containing silane compound contained in the surface-treating agent is a compound wherein g is 2 or more.

Embodiments of a deadfront article are provided. The deadfront article includes a substrate having a first surface and a second surface. The deadfront article also includes a semi-transparent layer disposed onto the second surface of the substrate. The semi-transparent layer has a region of a solid color or of a design of two or more colors, and the semi-transparent layer has a first optical density. Further, the deadfront article includes a contrast layer disposed onto the region. The contrast layer is configured to enhance visibility of the color(s) of the semi-transparent layer.