737 patents
Page 18 of 37
Utility
Semi-finished Lens, Method and Device for Manufacturing an Optical Lens
6 Jan 22
Disclosed is a semi-finished lens including a first optical surface including a surface design associated with a first reference system and a second optical surface to be manufactured, the first and second optical surfaces are connected by an external periphery surface, the semi-finished lens further including a reference element provided on the second optical surface and/or on the external periphery surface, the position of the reference element being defined with respect to the first reference system.
Luis CASTRO MARTINEZ
Filed: 27 Sep 19
Utility
Spin coating system and method
4 Jan 22
Provided herein is an improved spin coating system and a method of using the spin coating machine to produce an optical article.
Stephen Celmer
Filed: 9 Jan 18
Utility
Structured film laminate with antistatic compositions embedded therein
4 Jan 22
Embodiments of the disclosure relate to an antistatic film structure which comprises a transparent antistatic support structure and at least one antistatic component.
Ronald A. Berzon, Haipeng Zheng
Filed: 4 Dec 15
Utility
Epoxy functional composition protecting dyes from photo-degradation and cured coatings prepared therefrom
4 Jan 22
The present invention relates to an optical filtering coating composition, comprising at least one dye that at least partially inhibits transmission of light within the 400-500 nm wavelength range and has a conjugated chromophore, one or more epoxy compounds comprising at least one cycloaliphatic or aryl group, the ratio of the number of carbon atoms/the number of oxygen atoms in said epoxy compound being higher than or equal to 3, and the dry extract weight of such epoxy compounds present in the composition representing more than 33% of the dry extract weight of the composition.
Haipeng Zheng
Filed: 25 Oct 17
Utility
Electronic hinge for spectacle frame
4 Jan 22
A hinge including a first hinge part and a second hinge part configured to be attached respectively to a first spectacle frame element and a second spectacle frame element, the first hinge part being rotatable relative to the second hinge part, the first hinge part including a first electronic support part supporting at least a first electronic component and a first wire core part extending from the first electronic support part through at least one of the first or second spectacle frame element, the first electronic support part and the first wire core part are embodied in the first hinge part.
Marie Lore, Paul Gil, Guillaume Broutin, Jean Sahler
Filed: 15 Sep 17
Utility
Antistatic film and lamination thereof
4 Jan 22
Antistatic laminate film structures comprising a transparent support structure and an antistatic (AS) layer comprising at least one antistatic component are described herein.
Haipeng Zheng, Ronald A. Berzon
Filed: 4 Dec 15
Utility
Item Comprising an Organic-inorganic Layer with a Low Refractive Index
30 Dec 21
Sébastien Chiarotto, Jolanta Klemberg-Sapieha, Martin Caron
Filed: 6 Jul 21
Utility
Machine and method for manufacturing an ophthalmic article by casting
28 Dec 21
The invention provides a machine for manufacturing an ophthalmic article molded by casting and having a straight peripheral edge, comprising a mold assembly (2) having first and second molding shells (10, 13) provided with first and second predetermined molding surfaces (12, 14) and facing to each other, an adhesive tape member (20) joining said shells for forming a molding cavity (8), having a Young's modulus greater than 200 MPa and a maximum shear stress smaller than 0.05 MPa when measured at a temperature of polymerization of a molding material, and also configured to form a peripheral case of the mold assembly in which said first molding shell is able to be displaced relative to the second molding shell without affecting an intermediate portion (22) of the adhesive tape member which define said cavity, and a filling aperture formed in said adhesive tape member for introducing by casting said material into said cavity for forming the article.
Laurent Chippaux, Somporn Wichitworatham, Natrada Wiwattanapongpan
Filed: 13 Jun 17
Utility
Method for Manufacturing an Optical Lens by Additive Manufacturing and Corresponding Intermediate Optical Element
23 Dec 21
A method for manufacturing an optical lens by additive manufacturing, includes steps of: depositing a first layer having a first thickness; —depositing a second layer, having a second thickness, onto the first layer, the second layer forming a first asperity with the first layer; depositing a third layer having a third thickness; depositing a fourth layer having a fourth thickness onto the third layer, thereby forming an intermediate optical element, the fourth layer forming a second asperity with the third layer; and smoothing the first asperity and the second asperity on the intermediate optical element, thereby forming the optical lens.
Alexandre GOURRAUD
Filed: 24 Sep 19
Utility
Method and Manufacturing System for Manufacturing an Ophthalmic Lens Using an Additive Manufacturing Technology
23 Dec 21
A method for manufacturing an ophthalmic lens using an additive manufacturing technology, based on an optical element and initial manufacturing data, the initial manufacturing data including data defining a complementary portion to deposit on the optical element to form the ophthalmic lens from the optical element, includes the steps of: positioning the optical element on a support; determining a positioning error between the position of the optical element and a reference position on the support using a measurement directed to the optical element; determining a deterioration on the optical element; calculating updated manufacturing data taking into account initial manufacturing data and the determined positioning error; and manufacturing the ophthalmic lens using the updated manufacturing data by the additive manufacturing technology by depositing the complementary portion on the optical element to form the ophthalmic lens from the optical element.
Alexandre GOURRAUD
Filed: 24 Sep 19
Utility
Composition for Coating the Edge of an Optical Lens
23 Dec 21
The present invention relates to a cross-linkable composition comprising an epoxy oligomer comprising at least six hydroxy groups, to a coating obtained by curing the cross-linkable composition and to an optical lens comprising said coating on a surface thereof, in particular on the edge surface thereof.
Hui YU, Sunil Madhukar BHANGALE, Prakhar KASTURE, Pierre FROMENTIN
Filed: 13 Nov 19
Utility
Optical Article Having an Interferential Coating with an Improved Abrasion-Resistance
23 Dec 21
Benoit EMPRIN, Nicolas MAITRE, Sébastien CHIAROTTO
Filed: 17 Oct 19
Utility
Optical Lens Having a Mirror Coating and a Multilayer System for Improving Abrasion-Resistance
23 Dec 21
The invention relates to an optical lens comprising a substrate having a front main face and a rear main face, at least one main face of which being successively coated with a first high refractive index sheet which does not comprise any Ta2O5 layer, a second low refractive index sheet a third high refractive index sheet, a monolayer sub-layer having a thickness higher than or equal to 100 nm, and a multilayer interferential coating comprising a stack of at least one high refractive index layer and at least one low refractive index layer.
Christophe VALENTI, Frédéric GUILLAIN, William TROTTIER-LAPOINTE
Filed: 18 Nov 19
Utility
Ophthalmic lens comprising an encapsulated light-absorbing additive
21 Dec 21
The present invention relates to an ophthalmic lens which efficiently absorbs light rays comprising a composition derived from a monomer or oligomer, a catalyst, at least one light-absorbing additive contained in nanoparticles which are dispersed in said monomer or oligomer.
Pierre Fromentin, Tipparat Lertwattanaseri, Waranya Phompan, Sanya Hokputsa
Filed: 9 Aug 17
Utility
a Method and a System for Manufacturing an Optical Lens
16 Dec 21
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.
Thierry BAUDART, Manuel THEODET
Filed: 4 Oct 19
Utility
Lamination Machine and Method with an Improved Blocker Support
16 Dec 21
Disclosed is a lamination machine including: a film support for receiving a functional film to be laminated; an article support configured to receive and position the optical article in a predetermined orientation; and an actuating member configured to move the film support and the article support toward each other for laminating at a predetermined pressure the functional film received in the film support onto the optical article received within the article support.
Youval KATZMAN, Zohar KATZMAN, Yohann FELTEN, Christelle MARCK, Jeanne MARCHAL, Marc PETER
Filed: 9 Oct 19
Utility
Optical article with high reflection in the near infrared region and in the blue light region
14 Dec 21
This invention relates to an optical article comprising a transparent substrate coated with an antireflective coating comprising at least two layers having a low refractive index, and at least two layers having a high refractive index, one layer having a high refractive index being the nearest from said substrate, characterized in that the total physical thickness of said antireflective coating is equal to or lower than 600 nm, and such that: —the mean reflection factor in the near infrared region is higher than or equal to 20% at an angle of incidence lower than 35°, and —the mean reflection factor RmB of blue light at a wavelength ranging from 420 to 450 nm is higher than or equal to 7.0% at an angle of incidence lower than 15°.
Xingzhao Ding, Shi Qin Gracia Loo, Andrew Rosales Pelayo
Filed: 28 Apr 17
Utility
Method for the Manufacturing of an Optical Element, Optical Element Thus Obtained
9 Dec 21
Disclosed is a method for the manufacturing of an optical element having a refractive index above 1.59 by additive manufacturing to the optical element obtained by such a method and to an ophthalmic lens including such an optical element.
Mathieu FEUILLADE, Pierre FROMENTIN, Maxime LECOMPERE, Pierre LEITE
Filed: 3 Oct 19
Utility
Optical Article with a Durability Improved Hard Coating
9 Dec 21
The present invention relates to an optical article comprising a substrate having at least one main surface coated with a coating comprising at least one layer of an abrasion and/or scratch-resistant coating, wherein the abrasion and/or scratch-resistant coating is formed from a composition comprising at least one epoxy compound bearing at least one silicon atom having at least one hydrolysable group directly linked to the silicon atom and at least one group comprising an epoxy function linked to the silicon atom through a carbon atom, and/or a hydrolysate thereof, at least one plasticizer, a silane hydrolysate and colloidal silica, wherein the total amount of plasticizer in the composition is lower than 10 wt % of the dry extract of the total composition, and wherein the weight ratio of silane of formula (I) to plasticizer is higher than 0.4 in the dry extract of the composition.
Gautier LAVAL, Annette CRETIER, Stéphanie LECHANTRE, Xavier PANCHOUT, Joseph MARTIN
Filed: 8 Jun 21
Utility
Method for Determining a Colored Filter Applied to a Spectacle Lens and Associated Device
9 Dec 21
A method for determining a colored filter suitable for being applied to an ophthalmic lens to improve or maintain a wearer's visual comfort and/or the visual performance, includes: a) selecting source of light scattering to be placed in front of an eye of the individual based on the degree of scattering needed; b) visually presenting an image through the source of light scattering; c) measuring the individual's visual performance when image is visually presented through the source of light scattering; d) placing a colored filter in front of an eye of the wearer; e) visually presenting the same image of step b); f1) measuring the individual's visual performance again; g) comparing the individual's visual performance measured in step c) with the individual's visual performance measured in step f1); h) determining if the colored filter is a suitable colored filter based on the result of the comparison of step g).
Daniel SPIEGEL
Filed: 2 Jun 21