A method for making spectacle arms from composite material with differentiated rigidity, the arms defining a first portion and an adjacent second portion which is less rigid than the first portion. The method includes: providing a first layer of non-cross-linked fiber-reinforced polymer material in the first and second portions; providing a separating element in the first portion, and superimposing a second layer of non-cross-linked fiber-reinforced polymer material on the first layer so as to cover the separating element at the first portion and contact the first layer at the second portion; subjecting the first layer, the second layer, and the separating element interposed between them to a molding process at predetermined pressure and temperature levels so as to cross-link the polymer of the composite material, thus obtaining a thickness and rigidity of the arm at the first portion which are greater than the thickness and rigidity at the second portion.

Some embodiments provide a lens including a lens body and an optical filter configured to attenuate visible light in certain spectral bands. At least some of the spectral bands can include spectral features that tend to substantially increase the colorfulness, clarity, and/or vividness of a scene. In certain embodiments, eyewear incorporates an optical filter that enhances chroma within one or more spectral bands. In some embodiments, a wearer of the eyewear can perceive the increase in chroma when viewing at least certain types of scenes.

This method of manufacturing an element forming part of an eyeglass frame includes the steps of: manufacturing by molding by injection of plastic material two layers of the element to be manufactured of the eyeglass frame; overmolding by means of these two layers a central core, to obtain an eyeglass frame element comprising three layers, its first and second layers forming external layers and its central core forming an internal layer.

An eyewear frame structure for holding at least one lens thereto, includes a base frame, a front frame attached to a front of the base frame and a comfort bar attached to a back side of the base frame. The frame structure has a plurality of vent passages extending therethrough. Each vent passage includes a substantially horizontal section defined between the base frame and the front frame, and a substantially vertical section defined between the base frame and the comfort bar.

A method is described for making frame components for spectacles, including: superimposing within a first mold, in the following order, at least a first film of plastic material, at least one semi-finished element pre-impregnated with resin, and at least a second film of plastic material; closing and heating the first mold, the temperature and pressure being applied and maintained until the resin is fully polymerized, in order to produce an intermediate component containing the semi-finished product); opening the first mold and extracting the intermediate component from the first mold. The method also includes: placing the intermediate component in a second mold; closing the second mold and forming a layer of polymer material on the intermediate component, resulting in mutual adhesion; opening the second mold and extracting an article produced by the molding step in the second mold and cutting the article to define the final profile of the component.

Provided herein are methods of preparing eyewear products made of a cellulose ester, a nylon or a polyester by simple and inexpensive single-nozzle or multi-nozzle 3D printers, wherein the eyewear products have a continuous range of colors or a gradual color change. Also provided herein are eyewear products made of a cellulose ester, a nylon or a polyester prepared by the methods disclosed herein.

The present invention generally concerns a one piece eyewear having concealed hinges made via 3D printing. More specifically, the invention includes a U-shaped hinge with irregular offsets that are blended parametric curves that connect a lens frame to temple bars. The hinge is most flexible at its parabolic cross section and allows the temple bars to open and close, mimicking the rotational and stress bearing properties of traditional mechanical hinges. The eyewear is sculpted in a 3D modeling program that exports digital instructions for rendering the hinges, lens frame, and temple bars as a single construct by a 3D printer. The one piece eyewear is capable of accepting prescription or non-prescription lenses. A method for making the eyewear having concealed hinges is also disclosed.

A component of an eyeglass frame and a method for additive manufacturing of such a component are by stereolithography. The component includes an eyeglass frame with an inner edge. An inner support structure is manufactured together with the eyeglass frame to support the eyeglass frame. The inner support structure of the manufactured component is connected to the inner edge at two opposite points so that the points are supported with respect to one another. The surface of the component has a connection region that is hidden in a use position of the finished eyeglass frame. An outer support structure is provided, which is manufactured together with the component. A connection between the outer support structure and the component is established in the connection region. The manufacturing of the inner support structure is started once the connection between the outer support structure and the component has been established.

An article includes a hollow enclosure defining a void. The void has a first section and a second section separate from the first section. An electronic component is housed in the first section and the second section of the void. A low pressure mold material is molded into the first section of the void and cured around a first segment of the electronic component to encapsulate the first segment of the electronic component. A support seal is inserted into the second section of the void adjacent a second segment of the electronic component. The support seal defines a sealing barrier on one side of the low pressure mold material that limits the flow of low pressure mold material out of the first section of the void.

A method for manufacturing continuous fiber composite frame having steps of heating at least a portion of a continuous fiber bundle, bending the portion in three-dimensional directions along a fiber axis of the continuous fiber bundle in space, and creating multiple structural units; and bonding multiple connection points of the structural units to create a structural prototype.