Essilor International

Eric Begg

Ahmed Drammeh

Hao-Wen Chiu

Zbigniew Tokarski

Peiqi Jiang

Srinivasan Balasubramanian

Mauricio Amaya Gutierrez

A method of forming an ophthalmic laminate lens, includes: forming a planar laminate () by adhering a first stretched polymer layer () to a first side of a thermoplastic elastomer layer (), and adhering a second polymer layer () to a second side of the thermoplastic elastomer layer (), the first stretched polymer layer () having a thickness greater than 250 pm, the second polymer layer () having a thickness greater than 250 pm, and the thermoplastic elastomer layer () having a thickness in a range of 15 μm to 150 μm; thermoforming the planar laminate () into a curved laminate (), the curve laminate () having a pre-molding curvature; arranging the curved laminate () in a mold (); and molding, via the mold set () at a predetermined temperature and a predetermined pressure, the curved laminate () with a polymer melt () into a curved lens, wherein a temperature of the polymer melt () is above a stretch temperature of the first stretched polymer layer ().

Method of preparing wafers with stretched polymers for wafer thermoforming and injection molding ophthalmic lenses comprising said wafer

The present disclosure includes systems, apparatuses, and methods for an optical system. In some aspects, the systems and devices may produce a wafer for use in the manufacture of an optical article. The wafer includes a laminate having a first layer that includes a first matrix material having a lower surface and an upper surface opposite the lower surface and a second layer that includes a second matrix material, the second layer is coupled to the first layer and covers at least a portion of the lower surface or the upper surface. The first layer includes a first thickness at a central portion that is greater than a second thickness at an edge portion.

Methods, apparatuses, and systems for edge sealing laminate wafers containing a soft deformable inner film

A method of forming an ophthalmic laminate lens, includes: forming a planar laminate by adhering a first polycarbonate layer to a first side of a thermoplastic elastomer layer, and adhering a second polycarbonate layer to a second side of the thermoplastic elastomer layer, the first polycarbonate layer having a thickness greater than 250 μm, the second polycarbonate layer having a thickness greater than 250 μm, and the thermoplastic elastomer layer having a thickness in a range of 15 μm to 150 μm; thermoforming the planar laminate into a curved laminate, the curve laminate having a pre-molding curvature; arranging the curved laminate in a mold; and molding, via the mold set at a predetermined temperature and a predetermined pressure, the curved laminate with a polymer melt into a curved lens.

Method of preparing thick laminate wafers for wafer thermoforming and injection molding

A system and method for manufacturing an ophthalmic lens is provided. The method involves preparing a cross-polarization cancelling optical film for an optical article comprising providing a film having at least a first section comprising a first edge, a second section comprising a second edge, and a predetermined color intensity; providing an apparatus, wherein the apparatus comprises at least a first roller and a second roller, wherein the first roller and the second roller are configured to stretch at least a portion of the film; and continuously and asymmetrically stretching at least a portion of the film using the apparatus, while substantially maintaining the color intensity of the film.

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Dallas, TX, United States of America

Eric Begg