The present disclosure relates to a method of printing a thermoplastic film on an optical mold comprising adjusting a temperature of the optical mold to a first temperature, printing a first layer of the thermoplastic film on the optical mold once the temperature of the optical mold has reached the first temperature, applying a vacuum to the optical mold to hold the thermoplastic film on the optical mold, adjusting the temperature of the optical mold to a second temperature, printing a second layer of the thermoplastic film on the first layer of the thermoplastic film once the temperature of the optical mold has reached the second temperature, adjusting the temperature of the optical mold to a third temperature, annealing the first layer and the second layer once the temperature of the optical mold has reached the third temperature, and removing the vacuum from the optical mold permitting removal of the thermoplastic film including the annealed first layer and the annealed second layer from the optical mold.

A mold insert for a tooling device for producing an optical component by injection molding, wherein the mold insert is formed at least in part of copper beryllium.

The invention relates to a method for manufacturing an ophthalmic lens having at least one optical function, comprising the step (200) of providing a starting optical system of the lens, having a basic optical function and the step (500) of additively manufacturing an additional optical element of the lens, by deposition of multiple predetermined bulking components made of at least one material having a predetermined refractive index, directly onto the front surface and/or the rear surface of the starting optical system; wherein the additive manufacturing step comprises the step of determining a manufacturing guideline for the additional optical element on the basis of the characteristics of said at least one optical function to be provided to the lens, the characteristics of said at least one basic optical function, the geometric characteristics of the starting optical system, and the predetermined refractive index of the material.

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.

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.

The disclosure includes core-shell filament composition for additive manufacturing of ophthalmic lenses and ophthalmic lens components. The disclosure also includes a set of criteria for selecting core and shell thermoplastic combinations that exhibit high optical clarity, improved filament inter-strand diffusion, high inter-strand adhesion, and improved manufactured part strength when used in an additive manufacturing method like fused deposition modelling.

A method for producing a semi-finished spectacle lens and a semi-finished spectacle lens includes identifying the semi-finished spectacle lens by applying a removable sticker having a unique code to the semi-finished spectacle lens. The semi-finished spectacle lens has an embossed code that is engraved into the semi-finished spectacle lens. The sticker is applied to at least partially cover the embossed code. The sticker can be applied directly onto the semi-finished spectacle lens early in the manufacturing process, for example immediately after molding or injection molding. The sticker can also be applied to the semi-finished spectacle lens before further surface treatment is carried out.

A manufacturing method of flexible waveguide display structure includes steps of: providing at least one mold, the at least one mold having multiple mold channels inside, a polymer material being filled into the multiple mold channels, after solidified and shaped, multiple flexible waveguide structures being formed; taking the multiple flexible waveguide structures out of the multiple mold channels, each two adjacent flexible waveguide structures of the multiple flexible waveguide structures having two opposite cut faces, an optical guide layer being formed on one of the cut faces; and connecting the opposite cut faces of the multiple flexible waveguide structures with each other to form the flexible waveguide display structure. The manufacturing method of the flexible waveguide display structure is applicable to a device with different curved faces or plane faces to enhance the installation flexibility and the brightness and uniformity of the visible light image.

A method and printing system for printing a three-dimensional structure, in particular an optical component, by depositing droplets of printing ink side by side and one above the other in several consecutive depositing steps by means of a print head. In each depositing step a plurality of droplets is ejected simultaneously by a plurality of ejection nozzles of the print head. After at least one depositing step, surface properties of a pre-structure built up by the deposited droplets are measured by a measuring unit in a measuring step. Ejection characteristics of the ejection nozzles are determined in dependency of the measured surface properties in a determining step and at least one following depositing step is performed in dependency of the determined ejection characteristics.

A process, in particular a 3D printing process, for producing a spectacle lens is disclosed. The process includes providing a coated substrate, providing a three-dimensional model of the spectacle lens, digitally cutting the three-dimensional model into individual two-dimensional layers, providing at least one printing ink, typically a 3D printing ink, building up the spectacle lens from the sum of the individual two-dimensional layers with a printing operation on the substrate, and hardening of the spectacle lens. The hardening can take place completely or partially after application of individual volume elements or after application of a layer, and the partial hardening can be completed after conclusion of the printing process.