The present disclosure relates to an ophthalmic lens treatment method, comprising heating, in a humidified environment, a semi-finished lens (20) to a predetermined temperature, the semi-finished lens (20) containing a base lens (10) and a film structure (2) of a predetermined thickness, and surfacing the semi-finished lens (20) to a predetermined power, wherein the predetermin ed temperature is a temperature above a softening temperature of the film structure (2), the humidity of the humidified environment is between 30% and 99% and the predetermined thickness of the film structure (2) is between 200 .Math.m and 800 pm.

An optical film according to the present disclosure comprises: a transparent substrate; a network of conductive nanowires positioned on at least one surface of the transparent substrate; and an organic binder, wherein the organic binder includes a first organic binder and a second organic binder having different solubility parameters (Hildebrand solubility parameter, δ) from each other, a difference in the solubility parameter between the first organic binder and the second organic binder being 5 MPa.sup.0.5 or more, and the optical film has a haze of 2.0% or less and a sheet resistance of 25 Ω/sq or less.

A method of making an optical filter film with varying optical properties includes the step of drawing a multilayer polymeric preform into an optical filter and varying at least one environmental condition being a member of the group including of heat, pressure, tension, and a drawing speed, the at least one environmental condition being varied over time or over a distance, or both, and causing a variation in layer thickness within the optical filter. The preform may be drawn through a furnace subjecting the preform to a heating power that varies across a width of the furnace or over time or both across the width and over time. The preform may also be drawn through the furnace while the drawing speed varies across a width of the furnace or over time or both across the width and over time.

The present disclosure relates to a method of preparing a laminate or a laminated lens, comprising obtaining a first plastic substrate having a front surface and a back surface, treating the front surface of the first plastic substrate or the back surface of the first plastic substrate, and laminating a second plastic substrate on the treated front surface of the first plastic substrate or the treated back surface of the first plastic substrate. The treating may include applying a polyurethane resin to a surface of the first plastic substrate. The method may further comprise treating a surface of the second plastic substrate. The method may further comprise applying activator to the treated surfaces of the first plastic substrate and the second plastic substrate and laminating by apposing the treated surfaces of the first plastic substrate and the second plastic substrate.

A method of forming an ophthalmic laminate lens, includes: forming a planar laminate by adhering a first polycarbonate layer to a first side of a thermoplastic elastomer layer, and adhering a second polycarbonate layer to a second side of the thermoplastic elastomer layer, the first polycarbonate layer having a thickness greater than 250 μm, the second polycarbonate layer having a thickness greater than 250 μm, and the thermoplastic elastomer layer having a thickness in a range of 15 μm to 150 μm; thermoforming the planar laminate into a curved laminate, the curve laminate having a pre-molding curvature; arranging the curved laminate in a mold; and molding, via the mold set at a predetermined temperature and a predetermined pressure, the curved laminate with a polymer melt into a curved lens.

An ophthalmic lens operable to protect the eye from harmful ultraviolet and high energy visible wavelengths of light and methods for producing the same.

Some embodiments provide a lens including a lens body and an optical filter configured to attenuate visible light in certain spectral bands. At least some of the spectral bands can include spectral features that tend to substantially increase the colorfulness, clarity, and/or vividness of a scene. In certain embodiments, eyewear incorporates an optical filter that enhances chroma within one or more spectral bands. In some embodiments, a wearer of the eyewear can perceive the increase in chroma when viewing at least certain types of scenes.

The present invention provides a functional sheet including a functional layer provided between protective layers. The functional layer is a polarizing film layer, a photochromic layer, or a combination of the polarizing film layer and the photochromic layer. At least one of the protective layers includes a layer formed of a resin (C) containing a polyester resin (A) obtained as a result of polycondensation of 1,4-cyclohexanedimethanol and 1,4-cyclohexanedicarboxylic acid and an aromatic polycarbonate resin (B), the polyester resin (A) being contained at a content of 10 to 100 parts by mass and the aromatic polycarbonate resin (B) being contained at a content of 0 to 90 parts by mass with respect to 100 parts by mass as a total of the polyester resin (A) and the aromatic polycarbonate resin (B). A lens is provided with such a functional sheet.

To provide an electrochromic device, including a laminated body, which includes: at least one support; a first electrode layer on the support; an electrochromic layer on the first electrode layer; a second electrode layer disposed to face the first electrode layer; and an electrolyte layer, which fills between the first electrode layer and the second electrode layer, and is on the electrochromic layer, the at least one support including a resin substrate, and the laminated body having a desired curve formed by thermoforming.

A lens for eyewear is configured to reduce the appearance of scratches on the lens and/or increase the durability of the lens. The lens can include a functional stack bonded to a lens body. The functional stack can include a functional layer, such as a thin film coating, sandwiched between the lens body and an optical-grade transparent film. The functional stack can increase abrasion resistance and environmental durability of the lens, and can reduce the appearance of scratches on the lens. The combined lens body and functional stack can increase the durability of the lens relative to a lens with a thin film coating (e.g., a gradient or mirror stack) on an external surface of the lens.