A material includes a transparent substrate coated with a stack of thin layers acting on infrared radiation including at least one functional layer. The stack includes a protective coating deposited above at least a part of the functional layer. The protective coating includes at least one lower protective layer based on titanium and zirconium, these two metals being in the metal, oxidized or nitrided form, and at least one upper protective layer of carbon, within which layer the carbon atoms are essentially in an sp.sup.2 hybridization state, located above the layer based on titanium and zirconium.

A method for preparing an optically transparent, superomniphobic coating on a substrate, such as an optical substrate, is disclosed. The method includes providing a glass layer disposed on a substrate, the glass layer having a first side adjacent the substrate and an opposed second side, the glass layer comprising 45-85 wt. % silicon oxide in a first glass phase and 10-40 wt. % boron oxide in a second glass phase, such that a glass layer has a composition in a spinodal decomposition region. The method further includes heating the second side of the glass layer to form a phase-separated portion of the layer, the phase-separated portion comprising an interpenetrating network of silicon oxide domains and boron oxide domains, and removing at least a portion of the boron oxide domains from the phase-separated portion to provide a graded layer disposed on the substrate. The graded layer has a first side disposed adjacent the substrate, the first side comprising 45-85 wt. % silicon oxide and 10-40 wt. % boron oxide, and opposite the first side, a porous second side comprising at least 45 wt. % silicon oxide and no more than 5 wt. % boron oxide.

A projection arrangement for a head-up display (HUD), includes a composite pane, including an outer and an inner pane connected to one another via a thermoplastic intermediate layer, with an HUD region; an electrically conductive coating on the surface of the outer or inner pane facing the intermediate layer or within the intermediate layer; and a projector that is directed toward the HUD region. The radiation of the projector is p-polarised. The composite pane with the electrically conductive coating has reflectance of at least 10% relative to p-polarised radiation in the spectral range from 450 nm to 650 nm. The electrically conductive coating includes at least three electrically conductive layers, which are each arranged between two dielectric layers or layer sequences. The sum of the thicknesses of all electrically conductive layers is at most 30 nm and the electrically conductive layers have a thickness of 5 nm to 10 nm.

A cover glass includes a glass substrate and an antireflection film disposed on at least one of main surfaces of the glass substrate, and the at least one of main surfaces of the glass substrate has one or more cracks formed therein, the crack(s) each having a length of 5 μm or less, and a difference Δa* in a* value between any two points within a surface of the cover glass on the side where the antireflection film has been disposed and a difference Δb* in b* value between any two points within the surface of the cover glass on the side where the antireflection film has been disposed satisfy the following expression: √{(Δa*).sup.2+(Δb*).sup.2}≤4.

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.

Provided is a laminate that includes a water absorbing layer (B), an antireflective function-imparting layer (C) and a hydrophilic layer (A) provided in this order on a substrate, wherein the hydrophilic layer (A) is formed of a crosslinked resin having an anionic, cationic or nonionic hydrophilic group, and has a gradient of hydrophilic groups (intensity of hydrophilic group on surface of the hydrophilic layer (A)/intensity of hydrophilic group at ½ of thickness of the hydrophilic layer (A)) of not less than 1.1; the water absorbing layer (B) is formed of a crosslinked resin having a water absorption rate per unit mass (g) of in the range of 5 to 500 wt %; and the refractive index of a layer forming the layer (C) satisfies a specific condition. The laminate can provide higher antifogging properties and antireflective properties.

A glass composite includes a first glass member and a second glass member. The first glass member and the second glass member are at least partially connected with each other at the surfaces. The glass composite has a light transmittance not lower than 95% of the light transmittance of the one, with the lower light transmittance, of the first glass member and the second glass member.

A first coating is provided on a first side of a glass substrate, and a second coating is provided on a second side of the glass substrate, directly or indirectly. The coatings are designed to reduce color change of the overall coated article, from the perspective of a viewer, upon heat treatment (e.g., thermal tempering and/or heat strengthening) and/or to have respective reflective coloration that substantially compensates for each other. For instance, from the perspective of a viewer of the coated article, the first coating may experience a positive a* color value shift due to heat treatment (HT), while the second coating experiences a negative a* color shift due to the HT. Thus, from the perspective of the viewer, color change due to HT (e.g., thermal tempering) can be reduced or minimized, so that non-heat-treated versions and heat treated versions of the coated article appear similar to the viewer.

A camera module according to one embodiment comprises: a barrel provided with at least one lens; a retainer having an inner space and accommodating the barrel in the inner space; a holder coupled to the lower portion of the retainer; a housing disposed on the lower side of the holder and accommodating a printed circuit board; and a cover part mounted on the retainer and disposed in front of the lens. The cover part comprises: a cover glass; a first reflection suppression layer disposed on the upper side of the cover glass; a heating layer disposed on the lower side of the glass cover; and a second reflection suppression layer disposed on the lower side of the heating layer.

The present invention relates to an optical element including a base material, a light-shielding film, and a cured film in which an alkyd resin and a melamine resin having two or more iminomethylol groups in a molecule are condensed or in which an alkyd resin and a benzoguanamine resin having two or more iminomethylol groups in a molecule are condensed. The light-shielding film is disposed in at least a part of the periphery of the base material. The cured film is disposed on the surface of the light-shielding film.