An optical plastic product has an optical multilayer film formed on one or both surfaces of a base made of plastic, directly or via an intermediate film, wherein the optical multilayer film includes a tensile-stress high-refractive-index layer having tensile stress as internal stress and made of a high refractive index material, and a low refractive index layer made of a low refractive index material, and the tensile-stress high-refractive-index layer is disposed with a physical film thickness of not greater than 10 nm, in a first layer as counted from the base side in the optical multilayer film.

An ophthalmic tinted glass (10) comprises a substrate-forming base eyeglass (1), a first layered structure (2) which covers a convex face (Cx) of the base eyeglass, and optionally a second layered structure (3) which covers a concave face (Cc) of the base eyeglass. The first layered structure has a function of selective reflection increase, and the second layered structure is antireflective. Such ophthalmic tinted glass produces solar protection while having a mean transmittance value in a wavelength range from 460 nm to 10 nm, or 465 nm to 495 nm, which is high enough for avoiding biological, hormonal and behavioural disorders for a wearer of the tinted glass.

The present invention relates to a novel lens unit being configured for spectral selective retinal stimulation modulation, which is advantageously a passive modulation effect in the lens of the invention. More specifically, the lens unit comprises a lens substrate having a certain volume defining a front and back surface, wherein the lens unit carries a spectral coder which, when the lens unit is in use, operates as a temporal spectral coder with respect to a portion of input light interacting with the lens unit and reaching the eye.

The spectacle lens includes a lens substrate; a multilayer film disposed on one surface of the lens substrate; and a multilayer film disposed on the other surface of the lens substrate, wherein an average reflectance within the wavelength range from 380 to 500 nm measured at least on one surface of the spectacle lens is 10.00% or more, and a reflectance measured at least on one surface of the spectacle lens is 5.00% or less in the entire range within the wavelength range from 400 to 780 nm.

Provided is a spectacle lens, having a lens substrate including a blue light absorbable compound, and a multilayer film including a chromium layer with a film thickness of 1.0 to 10.0 nm, blue light cut rate being 21.0% or more, a dominant wavelength measured at the object side surface of the spectacle lens falling within a range of 500.0 to 550.0 nm, and a dominant wavelength measured at the eyeball side surface of the spectacle lens falling within a range of 500.0 to 550.0 nm.

A spectacle lens for an eye of a wearer of spectacles has a front surface and a back surface, wherein the front surface of the spectacle lens faces away from the eye and the back surface of the spectacle lens faces the eye. The spectacle lens includes an optical lens substrate made of or containing mineral glass and/or organic glass, wherein the spectacle lens has at least one first antireflection coating and at least one second antireflection coating, wherein the at least one first antireflection coating has a filter effect for blue light. Further, spectacles containing the spectacle lens are also disclosed.

Apparatus and methods for producing narrow-band radiation in the green region of the visible spectrum are described. The narrow-band radiation may be used to aid subjects experiencing photophobia. In some cases, subjects may experience a reduction in pain (e.g., migraine photophobia) when using the narrow-band radiation.

A method for preparing an ophthalmic device for slowing, inhibiting or preventing myopia progression involves (a) soaking an ophthalmic device in one or more first solvent solutions to swell the ophthalmic device; (b) soaking the swelled ophthalmic device in one or more second solvents solutions comprising one or more red-light blocking compounds blocking greater than about 5% to about 25% of red-light transmission through the ophthalmic device at a wavelength of from about 550 nanometers (nm) to about 800 nm to de-swell the swelled ophthalmic device and entrap the one or more red-light blocking compounds in the de-swelled ophthalmic device; and (c) sterilizing the de-swelled ophthalmic device.

The invention discloses a variable tint lens and glasses. The variable tint lens includes a first polarizer, a second polarizer, and a liquid crystal layer arranged between the first polarizer and the second polarizer, a first conductive film arranged between the first polarizer and the liquid crystal layer, and a second conductive film arranged between the second polarizer and the liquid crystal layer, the first conductive film and the second conductive film are also connected to a power supply device. The arrangement direction of the liquid crystal molecules in the liquid crystal layer changes according to the voltage provided by the power supply device, so that the refractive index of the liquid crystal molecules to the light is changed, and the color of the light passing through the liquid crystal layer is changed. Compared with the prior art, the present invention can continuously change the color of light passing through the variable tint lens and adjust the brightness of the light. It is equipped with automatic adjustment and manual adjustment, which can adjust the color of the light according to actual needs, which improves the user experience.

The invention relates to a method for treating a mirrored optical item, comprising: a substrate (10), a mirroring stack (21) of at least two interference layers (M1 to M6) carried by the substrate (10), thus increasing the reflection and having: an interference layer (M1) distant from the substrate (10), with a first initial thickness and a first refractive index and at least one near interference layer (M2) arranged between the substrate (10) and the distant interference layer (M1), with a second thickness and a second refractive index different from the first refractive index, the mirroring stack (21) giving the mirrored optical ilem (1) a first colouring according to the CIELAB space, by means of an interferometry phenomenon, the method comprising a step (103) of removing, by ion bombardment, at least in one first predetemrined zone (Z1), a thickness of the mirrored stack that is less than the sum of the initial thicknesses concerned by the removal step, the mirrored optical item having, by means of an interferometry phenomenon, a second colouring according to the CIELAB space different from the first colouring.