Provided a spectacle lens including a lens base material and a multilayer film provided on each surface of an eyeball-side surface and an object-side surface of the lens base material, in which a mean reflectance R.sub.B(object) in a wavelength range of 430 to 450 nm measured on the object-side surface of the spectacle lens is equal to or more than 1.00%, and a mean reflectance R.sub.UV(eye) in a wavelength range of 280 to 380 nm measured on the eyeball-side surface of the spectacle lens is less than or equal to 15.00%.

A spectacle lens including a lens base material and a multilayer film provided on each surface of an eyeball-side surface and an object-side surface of the lens base material, in which a normal incidence mean reflectance R.sub.eye in a wavelength range of 430 to 450 nm measured on the eyeball-side surface of the spectacle lens and a normal incidence mean reflectance R.sub.object in a wavelength range of 430 to 450 nm measured on the object-side surface of the spectacle lens each are more than 0%, and R.sub.eye is greater than R.sub.object.

An optical film includes a polymeric bandstop filter reflecting a band of blue light in a range from 440 nm to 480 nm a polymeric bandstop filter reflecting a band of blue light in a range from 440 nm to 480 nm and transmitting greater than 50% of blue light at a wavelength of 10 nm longer than a long wavelength band edge and at a wavelength of 10 nm shorter than a short wavelength band edge.

This invention relates to an ophthalmic lens with a low reflection in the ultraviolet region, comprising a transparent substrate with a front main face and a rear main face, said rear main face being coated with a multilayered antireflective coating comprising a stack of at least one layer having a refractive index higher than 1.6 and of at least one layer having a refractive index lower than 1.55, wherein: the mean reflection factor R.sub.uv on said rear face between 280 nm and 380 nm, weighted by the function W(λ), is lower than or equal to 5%, preferably is lower than or equal to 4%, for an angle of incidence of 35°, the Chroma C* of reflected light is equal to or lower than 4, preferably lower than or equal to 3, for an angle of incidence (θ) of 15°.

This optical device comprises an ophthalmic lens and a light source emitting in the deep red and near infrared region. The ophthalmic lens has front and rear faces coated with interferential coatings. The mean reflectance of the rear interferential coating is lower than or equal to 2.5% for wavelengths ranging from 700 nm to a predetermined maximum wavelength lower than or equal to 2500 nm, at an angle of incidence lower than or equal to 45°. At an angle of incidence lower than or equal to 45°, for wavelengths ranging from 700 nm to the predetermined maximum wavelength, the mean reflectance of the front interferential coating is either lower than or equal to 2.5% if the source is directed towards the front face of the ophthalmic lens, or higher than or equal to 25% if the source is directed towards the rear face of the ophthalmic lens.

Disclosed is a user wearable optical article including an optical substrate and an interferential coating. The interferential coating may be disposed the substrate and may be configured to selectively reflect light of at least one range of wavelengths of an incident light in the near infrared light spectrum. A peak reflectance measured at a substantially normal to the optical article may be at least 70%. An eyewear including an optical article and a method for producing an optical article are also disclosed. The method may include providing the optical substrate and providing the interferential coating disposed on the optical substrate. The interferential coating may selectively reflect light of at least one range of wavelengths of an incident light in the near infrared light spectrum. A peak reflectance may be at least 70% and the interferential coating has a mean reflectance of less than 1.5% in a visible light range.

A laser protection eyewear lens includes a lens substrate comprising an embedded wavelength filter having a first filter function, and a multi-layer dielectric filter applied to at least one of an inside and an outside surface of the lens substrate that comprises a second filter function having at least one center wavelength and bandwidth. The first filter function of the embedded wavelength filter and the second filter function of the multilayer dielectric filter produce a combined filter function that attenuates light reflecting off the multi-layer dielectric filter.

A spectacle lens having a front surface intended to be fitted away from the eye. The spectacle lens includes a substrate made from mineral glass or an organic material. The spectacle lens has selective light wavelength filter properties. The selective light wavelength filter properties include a spectral transmittance between 80% and 95% for all wavelengths in a wavelength range between 428 nm and 452 nm for a light ray entering the spectacle lens on the front surface at an angle of incidence of 0°, a spectral transmittance between 95% and 100% for all wavelengths in a wavelength range between 500 nm and 700 nm for a light ray entering the spectacle lens on the front surface with an angle of incidence of 0° and a yellowness index of no more than 10 for a standard illuminant D65 and a standard observer function of 2° (D65/2°).

Lens coatings and coated lenses which offer full-spectrum protection by reducing back-side reflection of all light spanning from the ultraviolet sub-band B (UVB) to infrared (IR-A) region are provided. The full-spectrum back-side anti-reflective coatings disclosed herein are comprised of multiple thin-film layers of high refractive index (HighIndex) and low refractive index (LowIndex) materials. In many embodiments, the penultimate layer distal from the substrate lens is a HighIndex layer, and the final layer distal from the substrate lens is a LowIndex layer.

The invention relates to an optical article comprising a substrate having at least one main face successively coated with a layer comprising chromium, silicon and oxygen, a monolayer sub-layer having a thickness higher than or equal to 100 nm, a multilayer interferential coating comprising a stack of at least one high refractive index layer having a refractive index higher than 1.55 and at least one low refractive index layer having a refractive index of 1.55 or less, wherein the ratio (I) is higher than or equal to 1.5, and the optical article has a Bayer value determined in accordance with the ASTM F735-81 standard higher than or equal to 7.

[00001]$\begin{array}{c}{R}_D=\frac{\begin{array}{c}\mathrm{thickness}\mathrm{of}\mathrm{the}\mathrm{outermost}\mathrm{low}\mathrm{refractive}\mathrm{index}\\ \mathrm{layer}\left(s\right)\mathrm{of}\mathrm{the}\mathrm{interferential}\mathrm{coating}\end{array}}{\begin{array}{c}\mathrm{thickness}\mathrm{of}\mathrm{the}\mathrm{outermost}\mathrm{high}\mathrm{refractive}\mathrm{index}\\ \mathrm{<p></p>\; <div\; class="d-none\; d-xl-block\; offcanvas\; offcanvas-end\; h-100"\; data-bs-backdrop="false"\; data-bs-scroll="true"\; data-turbo-permanent=""\; id="chat">\; <turbo-frame\; loading="lazy"\; class="vstack\; h-100"\; id="sidebar\_chat"\; src="/chats"></turbo-frame>\; </div>\; <div\; class="toast-container\; position-fixed\; top-0\; end-0\; p-3"\; data-toast-container-target="container"></div>}\end{array}}\end{array}$