Essilor International

Essilor International (compagnie Generale D'optique)

Aref Jallouli

Haifeng Shan

Hao-Wen Chiu

Hao Wen Chiu

Yassin Yusef Turshani

Sirisoma Wanigatunga

Martin Rickwood

Ronald A Berzon

Steven Weber

Elliot French

Srinivasan Balasubramanian

Peiqi Jiang

Haipeng Zheng

Gabriel Keita

Robert Alan Valeri

Pierre Fromentin

Mathieu Feuillade

Gilles Baillet

Richard Muisener

Chefik Habassi

Christelle Marck

Zbigniew Tokarski

Philip Miller

Gregory Hervieu

Gary S Clark

Paresh Kitchloo

Robert Rist

David Montoya

Rick Muisener

Srini Balasubramanian

Kimberly Morgan

Séverine Tisne

Ron Berzon

An ophthalmic lens including a substrate-independent adhesive primer for joining a functional element to a lens substrate. In particular, the ophthalmic lens includes at least one polymerized lens substrate including at least one thermoset monomer, a functional component including at least one thermoplastic layer, a surface of the at least one thermoplastic layer facing the polymerized lens substrate, and a primer coating deposited onto the surface of the at least one thermoplastic film facing the polymerized lens substrate.

Primer for ophthalmic lenses

A mold element () is fabricated () using a first mold () with which microstructures () are integrally formed in relief on the mold element (). A lens () is cast () using a second mold () that includes the mold element () such that the microstructures () are integrally formed on the lens ().

Casting a lens with surface microstructures

A light filtering element, includes: at least one layer, a first layer of the at least one layer being stretched along a strain direction and including a first narrowband dye, the first narrowband dye including a first narrowband dye peak absorbance wavelength with a first narrowband dye bandwidth; and a first dichroic dye configured to absorb polarized light, the first dichroic dye including a first dichroic dye peak absorbance wavelength with a first dichroic dye bandwidth, molecules of the first dichroic dye being at least partially oriented along the strain direction.

High efficiency polarizing lens with color enhancement

A method of manufacturing an optical lens (), comprising: obtaining (S) a transparent thermoplastic (TP) carrier () with at least one smooth surface; printing (S), via a 3-D printer on the side opposite to the at least one smooth surface of the transparent TP carrier (), at least one transparent layer () using a thermoplastic filament (), each transparent layer () having a predetermined light filtering property, thereby forming a functional layer (); and performing (S) an injection over-molding process () to fuse bond the functional layer () to a thermoplastic substrate thereby forming the optical lens, wherein the at least one smooth surface of the transparent TP carrier () forms a smooth surface of the manufactured optical lens ().

Functional wafers by 3D printing

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.

FDM 3D printing of optical lens with high clarity and mechanical strength

Disclosed herein is an injection molding method for making optical thermoplastic lenses using 3D—printed functional wafers. The method employs a variable injection molding cavity temperature that is heated to at least wafer Tg—10° C.

Injection overmolding with heat/cool cycling for making optical lenses using 3D-printed functional wafers

Disclosed is a method of manufacturing an ophthalmic lens having at least one optical function, including the determination of a transmission spectrum in a wavelength range from 280 to 2000 nm, the determination of a matrix including at least two compounds absorbing light having a wavelength from 280 to 2000 nm, with regard to the determined transmission spectrum, and additively manufacturing the matrix.

Determining method for an ophthalmic lens with targeted transmission spectrum

The optical articles disclosed herein render polarized glare in a certain tunable color that is visually more perceptive than a regular tinted lens or a regular polarized lens. Optical articles, including sunglass lenses, that are configured to color plane-polarized light transmitted through the lens will draw the wearer's attention and help identify the contours or dangers on surfaces in the wearer's field of vision.

Optical articles with specific color glare

Provided herein is an improved polarized eyewear with selective light wavelength blocking and a method of making such polarized eyewear.

Polarized eyewear with selective blocking

Embodiments of the disclosure relate to a series of PC resin additives for maintaining the color stability and blue-cut performance during injection molding. The additives may be used to adapt a PC resin customarily used for sun protection lenses for clear lens applications.

Polycarbonate resin compositions with consistent color and stable blue-cut performance

The combination of selective and high pass filters to cut harmful blue light allowed to achieve the best compromise between high blue cut performance, high UV cut and low yellow index, not achievable when using the filters alone.

Optical article with blue cut, high UV cut and high clarity

Disclosed are polarized films containing specific light filters that block transmission of harmful electromagnetic radiation. Also disclosed are methods of producing said films as well as ophthalmic lenses having increased eye health.

Polarized films with specific light filters

A blue-cut wafer can be coupled to a lens, such that the blue-cut wafer can be configured to reduce by absorption at least a portion of light having a first wavelength range from 400 nanometers to 500 nanometers, preferably from 400 nanometers to 460 nanometers. The blue-cut wafer can permit light having a second wavelength range, the second wavelength range being greater than the first wavelength range, and homogenize a color appearance and a blue-cut performance level of the blue-cut wafer based on the blue-cut wafer having a maximum thickness and a minimum thickness within twenty percent of a nominal thickness of the blue-cut wafer.

Apparatuses and methods for blue-cut lenses

Disclosed are systems and processes for generating a finished or semi-finished lens, such as a spectacle lens, from a lens blank that includes an intermediate functional layer. Some embodiments of the process involve locating the functional layer and positioning the lens blank according to the location of the functional layer. The location of the functional layer can be ascertained by measuring the thickness of one or more layers of the lens blank. The lens blank can be surfaced on one or both sides to form a finished or semi-finished lens. Other embodiments are also described.

Systems for and methods of surfacing a composite lens blank with functional layer

A polyurethane based adhesive containing one polyol compound derived from caprolactone monomer having a number average molecular weight between 200 and 1000 combined with a polyisocyanate compound. The functionality of the polycaprolactone polyol is between 1 and 4. Other aspects include a polarizing layered structure, a polarized lens and a method for manufacturing same all of which include the polyurethane based adhesive. The adhesive avoids delamination and is useful in optical applications where it will be in contact with water, for example during surfacing or edging process.

Growing community of inventors

Shrewsbury, MA, United States of America

Aref Jallouli