314 patents
Page 7 of 16
Utility
Method for determining an optical parameter of a lens
1 Mar 22
A method implemented by computer means for determining at least one optical parameter of a lens of eyewear adapted for a person, the method comprising: —an image reception step, during which at least a first image and a second image are received, the first image comprising a front view of the face of the person with at least one part of an eye of the person being directly visible, and the second image comprising a front view of the face of the person with said part of the eye of the person being visible through at least part of the lens, and —an optical parameter determination step, during which at least one optical parameter of the lens is determined based on a comparison between said part on the first and the second image.
Stephane Gueu, Julien Andoche, Daniel Tang
Filed: 20 Dec 18
Utility
Method of determining a refractive power value characterising an ophthalmic lens and corresponding electronic device
1 Mar 22
A method of determining a refractive power value characterising an ophthalmic lens for correction of an individual's eye ametropia includes: obtaining first data representative of a refraction value and second data representative of a position of the individual's head with respect to a refraction apparatus when the refraction value was determined; determining the refractive power value as a function of the first data and of a relative position, derived the second data, of the refraction apparatus with respect to a centre of rotation of the eye when the refraction value was determined.
Gilles Le Saux, Stephane Boutinon, Cecile Pietri, Helene De Rossi
Filed: 4 Mar 16
Utility
Method for manufacturing an ophthalmic article
22 Feb 22
The invention provides a method for manufacturing an ophthalmic article having at least one optical function and at least one predetermined transmission parameter, comprising the steps (102) of surfacing at least a first face of a first body of said article, made from a first material, according to a first geometry determined for providing said predetermined transmission parameters; and surfacing (103) at least a second face of a second body of said article, made from a second material, according to a second geometry determined at least according to said first geometry, for providing said optical.
Peiqi Jiang, Jean-Marc Padiou
Filed: 25 Oct 17
Utility
Spectacle frame with cut rims and attachable bridge, kit of parts and eyewear
15 Feb 22
Disclosed is a spectacle frame including a pair of lens holding rims interconnected by a bridge, each rim being encircling and holding a lens in a central aperture of the rim, each rim being linked laterally to a temple, each rim having at least one cut allowing expansion of the central aperture or retraction and closure of the central aperture by closing the cut.
Ludovic Jouard, Hélène Perchepied, Patricia Koh, Shindhe Gunputh, Frédéric Corbasson
Filed: 16 Mar 18
Utility
Method for determining the optical power of an optical lens
15 Feb 22
A method for determining optical power of an optical lens to be placed in front of an eye of a person, the method including: a first distance determining during which a first gazing distance is determined, which is the distance between the eye of the person and a first visual stimulus when the person gazes at the first visual stimulus in a given gazing direction with a first level of attention: a second distance determining during which a second gazing distance is determined, which is the distance between the eye of the person and a second visual stimulus when the person gazes at the second visual stimulus in the given gazing direction with a second level of attention different from the first level of attention; and an optical power determining during which the optical power adapted for the person is determined based on the first and second gazing distances.
Jean-Luc Perrin, Damien Paille
Filed: 26 Jul 16
Utility
Optical device for a head-mounted display, and head-mounted device incorporating it for augmented reality
8 Feb 22
The present invention relates to an optical device usable in a head-mounted display which comprises a light conducting element and at least one wafer, and to a head-mounted device which is configured to provide an informative display of augmented reality for a wearer of the head-mounted device and which comprises such an optical device.
Mathieu Meynen, Marius Peloux, Dominick Hubacz, Ludovic Jouard, Marc Reignault
Filed: 9 Mar 18
Utility
Method for customizing a head mounted device adapted to generate a virtual image
8 Feb 22
A method for customizing a head mounted device adapted to generate a virtual image for a wearer, the method comprises: obtaining a 3D eye pupil position of the wearer in a reference frame and corresponding to a predetermined gaze direction, and customizing the head-mounted device based on the 3D eye pupil position so that the position of a focus area (EMB) at least partly coincides with the position of the eye pupil in the predetermined gaze direction, wherein customizing the head-mounted device comprises controlling a recording of a holographic mirror based on the 3D eye pupil position in the reference frame.
Cécile Petignaud
Filed: 4 Apr 19
Utility
Heat-curable hybrid epoxy functional composition and transparent heat-cured caustic-resistant coatings prepared therefrom
8 Feb 22
The present invention relates to a heat-curable composition comprising at least one epoxy monomer comprising two or three epoxy groups, which is not a hydrolysis-polymerizable silicon compound, at least one epoxy compound bearing at least one silicon atom having at least one hydrolyzable group directly linked to the silicon atom and at least one epoxy group, and at least one epoxy ring-opening catalyst.
Robert Valeri, Haipeng Zheng, Matthew Freeman
Filed: 25 Oct 17
Utility
Wearing detection module for spectacle frame
1 Feb 22
A wearing detection module configured to be fixed on a spectacle frame element of a smart spectacle frame, the spectacle frame element including a first surface configured to face the wearer when using the smart spectacle frame and a second surface opposed to the first surface, and the wearing detection module including a pair of sensors configured to measure one parameter indicative of the distance between the spectacle frame element and the wearer, one sensor is arranged on the first surface and the other one is arranged on the second surface, and a processing unit configured to receive data indicative of the parameter sensed by each sensors and to determine a wearing data indicative of the use by the wearer of the smart spectacle frame based on the received data.
Marie Lore, Paul Gil, Guillaume Broutin, Jean Sahler
Filed: 21 Sep 17
Utility
Optical component comprising liquid crystals in a blue phase and process for making such optical component
25 Jan 22
An optical component including a first layer, a second layer and a bulk sandwiched between the first and second layers, where the bulk is formed by a composition containing a liquid crystal material which is in a blue phase.
Eva Oton, Fuyuhiko Inoue, Toshiki Nakano, Estelle Netter, Yukiko Katayama
Filed: 18 Nov 16
Utility
Plateau-based control of the transmission of a variable transmission lens
18 Jan 22
The invention relates to a variable transmittance device including at least one variable transmittance lens and a control circuit comprising at least one sensor suitable for measuring an illuminance (E), the control circuit being suitable for automatically controlling the value of the transmittance of the variable transmittance lens depending on the illuminance (E) measured by the sensor, wherein the control circuit defines a plurality of successive illuminance ranges (P) each illuminance range (P) being bounded by a minimum illuminance value (Emin) and a maximum illuminance value (Emax), and wherein the control circuit is suitable for controlling the transmittance of the lens to a plurality of setpoint transmittance values (Tv) respectively corresponding to said plurality of illuminance ranges (P).
Marius Peloux, Cedric Gilbert, Samuel Archambeau
Filed: 7 Jul 16
Utility
Method and system for measuring refraction, method for the optical design of an ophthalmic lens, and pair of glasses comprising such an ophthalmic lens
18 Jan 22
Disclosed is a method for measuring the refraction of an individual by a refraction measuring appliance, including: an initial step of determining at least one initial value of a visuo-postural parameter of the individual; a step of processing the initial value in order to deduce at least one initial value of a regulating parameter of the refraction measuring appliance, the regulating parameter being associated with the visuo-postural parameter; a step of regulating the refraction measuring appliance according to the initial value of the regulating parameter; and a step of measuring the refraction of the individual by the measuring appliance regulated in this way.
Jean-Luc Perrin, Guilhem Escalier, Isabelle Poulain, Benjamin Rousseau, Cécile Petignaud, Gildas Marin
Filed: 27 Oct 17
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
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
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
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
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
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