B29D11/00432

A METHOD AND A SYSTEM FOR MANUFACTURING AN OPTICAL LENS
20210387431 · 2021-12-16 ·

A method of manufacturing an optical lens included the following steps: receiving optical data representing at least a characteristic of an optical correction provided by the optical lens; receiving process data representing at least one characteristic of an additive manufacturing method used to manufacture the optical lens, the process data defining at least an equipment involved in the additive manufacturing method; based on the optical data and on the process data, determining manufacturing data usable by an additive manufacturing machine implementing the additive manufacturing method; and—manufacturing the optical lens by the additive manufacturing machine using the manufacturing data. A corresponding system is also described.

METHOD FOR PRODUCING POLARIZING LENS, POLARIZING FILM AND POLARIZING LENS

A method for producing a polarizing lens having a high luminous transmittance and degree of polarization with astigmatism kept low, and a polarizing film and a polarizing lens. The method for producing a polarizing lens includes: contracting a polarizing film at a maximum rate of contraction of 5% or more and 30% or less under moist conditions; processing the polarizing film into a curve; drying the polarizing film at temperature T.sub.1; providing a mold having a cavity in which the polarizing film is placed in the inside; injecting a curable composition into the cavity; curing the curable composition to obtain a polarizing lens in which the polarizing film is placed in the inside; and annealing the polarizing lens at temperature T.sub.2, wherein a relationship between the temperature T.sub.1 and the temperature T.sub.2 satisfies the following expression (1): T.sub.1>T.sub.2 . . . (1).

METHOD OF ADDITIVELY MANUFACTURING TRANSPARENT LENSES FOR LUMINARIES

A method of manufacturing a three-dimensional lens comprises inputting a lens template into a controller, depositing a first layer of lens material onto a work surface according to the lens Template, and successively depositing additional filamentous layers of the lens material onto the first layer. The deposition of layers of lens material is done according to the lens template in order to build the three-dimensional lens with a particular transmission scattering profile for transmitted light.

Optical element, assembly comprising such an optical element and method of manufacturing an optical element

An optical element includes an optical lens produced by an additive manufacturing method and a holder formed at least in part with the optical lens by the additive manufacturing method. The holder is adapted for cooperation with a manufacturing machine to thereby position the optical lens at a predetermined position in the manufacturing machine. A corresponding assembly and a method of manufacturing an optical element are also described.

Three-dimensional printing of optical devices

The present application discloses a method for three-dimensional deposition printing to manufacture optical elements including ophthalmic devices by controlling the level of oxygen in the polymerization mixture and the printing environment to achieve precision in form and smoothness of surface for image quality optical performance.

Three-dimensional (3D) printing of electro-active lenses

A method of manufacturing an optic includes disposing electronic circuitry on a substrate. The method also includes depositing a first resin on the first side of the electronic circuitry and curing the first resin to form a first optical segment. The method further includes depositing a second resin on the second side of the electronic circuitry and curing the second resin to form a second optical segment. The first and second optical segments encapsulate the electronic circuitry. The first resin and the second resin can include multiple droplets of resin, thereby reducing mechanical force imposed on the electronic circuitry during printing and allowing conformal contact between the resin and the electronic circuitry. Accordingly, electronic circuitry of smaller dimension can be used to form the electronic eyewear.

PRESSURE-SENSITIVE ADHESIVE TAPE AND METHOD FOR MOLDING PLASTIC LENS
20220195257 · 2022-06-23 ·

A pressure-sensitive adhesive tape for molding a plastic lens having a substrate and a pressure-sensitive adhesive layer formed on a surface of the substrate. The pressure-sensitive adhesive layer includes an acrylic copolymer having a functional group and a crosslinking agent capable of reacting with the functional group; the acrylic copolymer has a weight-average molecular weight (M.sub.w) of 1,100,000 or more and a molecular-weight polydispersity (M.sub.w/M.sub.n) of 10.0 or less; the pressure-sensitive adhesive layer has an elution percentage of 48.0% or less when immersed for two hours in toluene the temperature of which being adjusted to 80° C.; the pressure-sensitive adhesive tape exhibits a shift length of 0.15 mm or more and 0.50 mm or less after 800 minutes in a creep test; and the plastic lens has a refractive index of 1.59 or more.

METHOD AND DEVICE FOR APPLYING A MATERIAL TO A SUPPORT

Methods and apparatuses for mounting a material (1) on a carrier (6) are provided. To this end, the material is arranged on a porous layer (2) of an air bearing arrangement (2, 3).

Process for producing plastic lens and apparatus for producing plastic lens

A process for producing a plastic lens includes a step of stirring and mixing a solution including a polymerization reactive compound in a preparation tank; a step of transferring the polymerizable composition obtained in the step from the preparation tank to a lens casting mold; a step of curing the polymerizable composition; and a step of obtaining a plastic lens molded product by separating the obtained resin from the lens casting mold. The step of transferring the polymerizable composition includes a step of re-mixing the polymerizable composition discharged from the preparation tank and injecting the polymerizable composition into the lens casting mold.

Manufacturing for virtual and augmented reality systems and components

Disclosed is an improved diffraction structure for 3D display systems. The improved diffraction structure includes an intermediate layer that resides between a waveguide substrate and a top grating surface. The top grating surface comprises a first material that corresponds to a first refractive index value, the underlayer comprises a second material that corresponds to a second refractive index value, and the substrate comprises a third material that corresponds to a third refractive index value. According to additional embodiments, improved approaches are provided to implement deposition of imprint materials onto a substrate, which allow for very precise distribution and deposition of different imprint patterns onto any number of substrate surfaces.