Abstract:
The invention relates to a ring comprising a hoop (1, 20) for draining and encircling the edge of the optical element, which forms an arc of more than 180 degrees and which is equipped with an outward-facing drainage nozzle (10, 30) at each of the two ends thereof.
Abstract:
An optical item comprising an organic or mineral glass substrate ( 1 ) and a transparent polymeric material layer ( 3 ), characterized in that it comprises at least one intermediate layer ( 2 ) in direct contact with one main side of the substrate and the polymeric material layer, the intermediate layer(s) being made of particles of at least one colloidal mineral oxide and optionally of a binder, such (an) intermediate layer(s) having an initial porosity, and the initial porosity of the intermediate layer(s) being filled either by material from the polymeric material layer or by the substrate material if the latter is made in an organic glass and, optionally partly by the binder when present, so that the intermediate layer(s), after initial porosity filling, each represent a quarter waveplate with a wavelength in the range from 400 to 700 nm, preferably from 450 to 650 nm.
Abstract:
The coating process according to the invention consists in bringing at least one surface of the substrate made of organic glass into contact with an aqueous treatment solution comprising at least one surface-active agent prior to the deposition of the coating on the surface of the substrate.
Abstract:
The invention concerns a coating method which consists in contacting at least one organic glass substrate surface with an aqueous treating solution containing at least one surfactant prior to depositing the coat on the substrate surface. The invention is useful for coating ophthalmic articles.
Abstract:
An optical item comprising an organic or mineral glass substrate ( 1 ) and a transparent polymeric material layer ( 3 ), characterized in that it comprises at least one intermediate layer ( 2 ) in direct contact with one main side of the substrate and the polymeric material layer, the intermediate layer(s) being made of particles of at least one colloidal mineral oxide and optionally of a binder, such (an) intermediate layer(s) having an initial porosity, and the initial porosity of the intermediate layer(s) being filled either by material from the polymeric material layer or by the substrate material if the latter is made in an organic glass and, optionally partly by the binder when present, so that the intermediate layer(s), after initial porosity filling, each represent a quarter waveplate with a wavelength in the range from 400 to 700 nm, preferably from 450 to 650 nm.
Abstract:
An optical item comprising an organic or mineral glass substrate ( 1 ) and a transparent polymeric material layer ( 3 ), characterized in that it comprises at least one intermediate layer ( 2 ) in direct contact with one main side of the substrate and the polymeric material layer, the intermediate layer(s) being made of particles of at least one colloidal mineral oxide and optionally of a binder, such (an) intermediate layer(s) having an initial porosity, and the initial porosity of the intermediate layer(s) being filled either by material from the polymeric material layer or by the substrate material if the latter is made in an organic glass and, optionally partly by the binder when present, so that the intermediate layer(s), after initial porosity filling, each represent a quarter waveplate with a wavelength in the range from 400 to 700 nm, preferably from 450 to 650 nm.
Abstract:
The coating process according to the invention consists in bringing at least one surface of the substrate made of organic glass into contact with an aqueous treatment solution comprising at least one surface-active agent prior to the deposition of the coating on the surface of the substrate.
Abstract:
Article d'optique comprenant un substrat (1) en verre organique ou minéral et une couche d'un matériau polymérique transparent (3) caractérisé en ce qu'il comprend au moins une couche intermédiaire (2) en contact direct avec une face principale du substrat et la couche de matériau polymérique, la ou les couches intermédiaires étant constituées de particules d'au moins un oxyde minéral colloïdal et éventuellement d'un liant, cette ou ces couches intermédiaires ayant une porosité initiale, et la porosité initiale de la ou des couches intermédiaires étant comblée par du matériau de la couche de matériau polymérique ou du substrat si celui-ci est en verre organique et, éventuellement en partie par le liant lorsqu'il est présent, de sorte que la ou les couches intermédiaires, après comblement de la porosité initiale, constituent chacune une lame quart d'onde à une longueur d'onde dans le domaine allant de 400 à 700, de préférence 450 à 650 nm.