Patents by Inventor Cedric LeMaire

Cedric LeMaire has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11709110
    Abstract: Method for detecting a defect in a zone of interest of an optical lens, the method including: an image reception step, during which a plurality of images is received, each image includes a view of the zone of interest in front of a plurality of specific patterns, each specific pattern including a bright area and a dark area, and at least one image received is saturated in light intensity; a sampling step, during which each image of the plurality of images are sampled based on a common sampling pattern; a recombination step, during which a recombined image of the zone of interest is determined based on the common sampling pattern; and a defect detection step, during which a defect is detected in the zone of interest of the optical lens based on an analysis of the recombined image.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: July 25, 2023
    Assignee: Essilor International
    Inventor: Cédric Lemaire
  • Patent number: 10416038
    Abstract: Disclosed is a method for checking at least one geometric characteristic and one optical characteristic of a trimmed ophthalmic lens (10) including the following steps: a) arranging the trimmed ophthalmic lens on a support (110), b) capturing at least one image of the trimmed ophthalmic lens, c) determining, from the image, a measured geometric characteristic of the trimmed ophthalmic lens, d) determining at least one measured optical characteristic of the trimmed ophthalmic lens in a reference frame of the image captured in step b), e) comparing the measured geometric characteristic associated with the measured optical characteristic to a predefined desired ophthalmic lens model, including at least one desired geometric characteristic and one associated desired optical characteristic. Also disclosed is an associated checking device.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: September 17, 2019
    Assignee: ESSILOR INTERNATIONAL
    Inventors: Cedric Lemaire, Xavier Lippens
  • Patent number: 10265907
    Abstract: Disclosed is a locking device for a molding unit for containers of thermoplastic material. The device includes a lock with at least one locking pin, the at least one locking pin being made of polyetheretherketone (PEEK) and advantageously has at least one metal insert.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: April 23, 2019
    Assignee: SIDEL PARTICIPATIONS
    Inventors: Jean-Francois Morisse, Cedric Lemaire
  • Patent number: 10071520
    Abstract: A molding unit (10) for manufacturing preforms (100) made of plastics material, includes at least one “HR”-type mold (10), a nozzle (14) including at least a nozzle body (28) and a nozzle orifice (30) incorporating a preform (100) stabilizer (34) that forms with a tubular member (40) a mobile assembly that is able to slide axially relative to the nozzle orifice (30) between at least a top position and a bottom position, wherein the tubular member (40) is guided so as to slide axially with respect to the nozzle body (28) by at least one guiding element (46) which is interposed radially between the nozzle body (28) and the tubular inlet member (40), and the stabilizer (34), fixed to the tubular member (40), is guided with respect to the nozzle body (28) only by way of the at least one guiding element (46).
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: September 11, 2018
    Assignee: SIDEL PARTICIPATIONS
    Inventors: Cedric Lemaire, Olivier Alix, Frederic Brachais
  • Patent number: 9925681
    Abstract: A method for machining an optical lens via a trimming machine, includes: —a step of locking the optical lens, —a step of acquiring shape characteristics of the optical faces of the optical lens, —a step of generating an instruction for trimming the optical lens, and —a step of trimming the optical lens along a desired contour. The method also includes the following steps: —a step of generating an instruction for etching the optical lens depending on the acquired shape characteristics, and —a step of etching the optical lens along a line located inside the desired contour, during which a pointed etching tool of the trimming machine is controlled according to the etching instruction in such a way that the point of same continually slides against the optical face in order to score same along the line.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: March 27, 2018
    Assignee: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventor: Cedric Lemaire
  • Patent number: 9919453
    Abstract: A method for drilling an ophthalmic lens (10) includes the following steps: —memorizing the desired shape and dimensions of a drill hole (701; 702; 703) to be drilled in the ophthalmic lens (10) and the position of the opening of this drill hole on one of the faces (11, 12) of the ophthalmic lens; —positioning a drilling tool (80) facing the memorized position of the hole to be drilled; —determining a control setpoint for the transverse movement and axial advance of the drilling tool; and —drilling the ophthalmic lens according to the control setpoint. The control setpoint for the transverse movement and axial advance of the drilling tool forces the point of this drilling tool, on at least one drilling run, to follow a helical or pseudohelical trajectory depending on the desired shape and dimensions of the drill hole. An associated drilling device is also described.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: March 20, 2018
    Assignee: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventors: Cedric Lemaire, Sebastien Pinault
  • Patent number: 9475166
    Abstract: A method for cutting-out a multi-layer ophthalmic lens (100) following a desired contour (C3), includes: a step of pre-blanking the ophthalmic lens (100) using a preliminary tool (210; 223), according to a preliminary contour (C1, C1?); a step of blanking the ophthalmic lens (100) using a blanking wheel (210), following a blanking contour (C2, C3); and a step of finishing the ophthalmic lens (100) using a finishing tool (212). According to the invention, the preliminary contour (C1, C1?) is larger than the desired contour (C3), and the blanking wheel (210) used has a granulometry of between 0.1 and 0.5 mm and is controlled in relation to the ophthalmic lens (100) so as to apply a radial force of between 0.1 and 5 N to the ophthalmic lens (100) during the blanking step.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: October 25, 2016
    Assignee: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventors: Muriel Godeau, Aude Lapprand, Cedric Lemaire, Christian Massart, Gilles Massey, Sebastien Pinault, Catherine Roussel, Montserrat Burgos
  • Patent number: 9446491
    Abstract: Method of shaping an ophthalmic eyeglass lens presenting two main optical working faces and including firstly a substrate made of a first material and presenting two main faces corresponding to the two main faces of the lens, and secondly at least one coating film made of a material distinct from that of the substrate, the coating film being previously secured on at least one of the main faces of the substrate, includes: cutting the lens by machining with a first tool over at least the thickness of the previously secured coating film, to define internally a working central portion of the coating film that presents a reduced outline; trimming the edge face of the substrate along the desired outline by machining with a second distinct tool, without machining the working central portion; and finishing the edge face of the substrate without machining the working central portion.
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: September 20, 2016
    Assignee: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventors: Cedric Lemaire, Cedric Begon, Konogan Baranton, Ahmed Haddadi, Patrice Szymanski, Gerard Poirrier
  • Patent number: 9114560
    Abstract: Disclosed is a blowing device (10) for forming containers (24) from thermoplastic material preforms. The device (10) includes a blowing nozzle (12) including a bottom outlet opening (28) for a pressurized blowing fluid to leave along a vertical outlet axis (28) and a single duct (14) for supplying the nozzle (12) with blowing fluid that leads into the nozzle (12), via a top supply opening (31), along an axis that is completely radial relative to the outlet axis (A2) of the nozzle (12). The blowing device is characterized in that the upstream end section of the supply duct (14) leads into the nozzle (12) along a branching axis (B) that forms an obtuse angle (a) with the outlet axis (A1) of the nozzle (12) such that the blowing fluid leaving the supply duct (14) is directed downward.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: August 25, 2015
    Assignee: SIDEL PARTICIPATIONS
    Inventors: Alain Baron, Frederic Lecomte, Cedric Lemaire
  • Publication number: 20150140905
    Abstract: A method for cutting-out a multi-layer ophthalmic lens (100) following a desired contour (C3), includes: a step of pre-blanking the ophthalmic lens (100) using a preliminary tool (210; 223), according to a preliminary contour (C1, C1?); a step of blanking the ophthalmic lens (100) using a blanking wheel (210), following a blanking contour (C2, C3); and a step of finishing the ophthalmic lens (100) using a finishing tool (212). According to the invention, the preliminary contour (C1, C1?) is larger than the desired contour (C3), and the blanking wheel (210) used has a granulometry of between 0.1 and 0.5 mm and is controlled in relation to the ophthalmic lens (100) so as to apply a radial force of between 0.1 and 5 N to the ophthalmic lens (100) during the blanking step.
    Type: Application
    Filed: May 3, 2013
    Publication date: May 21, 2015
    Applicant: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventors: Muriel Godeau, Aude Lapprand, Cedric Lemaire, Christian Massart, Gilles Massey, Sebastien Pinault, Catherine Roussel, Montserrat Burgos
  • Patent number: 8931899
    Abstract: A method for trimming an ophthalmic lens using a machining device having a load sensor for measuring a load relating to the load applied by a machine tool to the lens, includes: immobilizing the lens on an immobilizing element, and trimming the lens, while measuring the load magnitude and steering the machine tool relative to the immobilizing element so as to bring the initial contour of the ophthalmic lens to a final contour of a different shape. Between the immobilizing and trimming steps, the machine tool is steered relative to the immobilizing element so that it makes a tour around the lens without contact therewith, while measuring the unladen load magnitude, this relating to the load required to move the machine tool relative to the immobilizing element without performing machining work while steering the machine tool, during the trimming step, as a function of the unladen magnitude measured.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: January 13, 2015
    Assignee: Essilor International (Compagnie Generale d'Optique)
    Inventors: Cedric Lemaire, Sebastien Pinault
  • Patent number: 8926401
    Abstract: A method of shaping an ophthalmic lens for mounting in a mixed surround of an eyeglass frame that presents at least one half-rim, includes: a) a step of acquiring a longitudinal profile characterizing the shape desired for the outline of the lens; b) a step of subdividing the longitudinal profile into a first arc associated with the half-rim and a second arc, in which step the positions of two singular points of the longitudinal profile are acquired that characterize the positions of the two ends of the half-rim; c) a first step of finishing the ophthalmic lens, during which a first portion of its outline is brought to the shape of the first arc; and d) a second step of finishing the ophthalmic lens, during which a second portion of its outline is brought to the shape of the second arc. In step b), the position of at least one of the two acquired singular points is corrected so as to reduce the length of the first arc of the longitudinal profile.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: January 6, 2015
    Assignee: Essilor International (Compagnie Generale d'Optique)
    Inventors: Cédric Lemaire, Romain Batherosse
  • Publication number: 20140308386
    Abstract: Disclosed is a blowing device (10) for forming containers (24) from thermoplastic material preforms. The device (10) includes a blowing nozzle (12) including a bottom outlet opening (28) for a pressurized blowing fluid to leave along a vertical outlet axis (28) and a single duct (14) for supplying the nozzle (12) with blowing fluid that leads into the nozzle (12), via a top supply opening (31), along an axis that is completely radial relative to the outlet axis (A2) of the nozzle (12). The blowing device is characterized in that the upstream end section of the supply duct (14) leads into the nozzle (12) along a branching axis (B) that forms an obtuse angle (a) with the outlet axis (A1) of the nozzle (12) such that the blowing fluid leaving the supply duct (14) is directed downward.
    Type: Application
    Filed: November 28, 2012
    Publication date: October 16, 2014
    Inventors: Alain Baron, Frederic Lecomte, Cedric Lemaire
  • Publication number: 20140300858
    Abstract: A method for trimming an ophthalmic lens using a machining device having a load sensor for measuring a load relating to the load applied by a machine tool to the lens, includes: immobilizing the lens on an immobilizing element, and trimming the lens, while measuring the load magnitude and steering the machine tool relative to the immobilizing element so as to bring the initial contour of the ophthalmic lens to a final contour of a different shape. Between the immobilizing and trimming steps, the machine tool is steered relative to the immobilizing element so that it makes a tour around the lens without contact therewith, while measuring the unladen load magnitude, this relating to the load required to move the machine tool relative to the immobilizing element without performing machining work while steering the machine tool, during the trimming step, as a function of the unladen magnitude measured.
    Type: Application
    Filed: August 29, 2012
    Publication date: October 9, 2014
    Applicant: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventors: Cedric Lemaire, Sebastien Pinault
  • Patent number: 8747187
    Abstract: A method of shaping an ophthalmic lens to have a desired outline with a machining device including a blocking support for the ophthalmic lens and at least one first machining tool, the method includes: obtaining an inner cutting limit for the first machining tool; defining an initial blocking position for the ophthalmic lens and its desired outline; calculating whether at least a portion of the desired outline presents a non-zero intersection with the inner cutting limit; defining as the final blocking position either the unchanged initial blocking position if the calculated intersection is zero, or else a blocking position that is modified relative to the initial blocking position so that the desired outline as repositioned using the modified blocking position does not present an intersection with the inner cutting limit associated with the first tool; and blocking and shaping the ophthalmic lens with the desired outline.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: June 10, 2014
    Assignee: Essilor International (Compagnie Generale d'Optique)
    Inventors: Cédric Lemaire, Philippe Pinault, David Tang
  • Publication number: 20130095733
    Abstract: Method of shaping an ophthalmic eyeglass lens presenting two main optical working faces and including firstly a substrate made of a first material and presenting two main faces corresponding to the two main faces of the lens, and secondly at least one coating film made of a material distinct from that of the substrate, the coating film being previously secured on at least one of the main faces of the substrate, includes: cutting the lens by machining with a first tool over at least the thickness of the previously secured coating film, to define internally a working central portion of the coating film that presents a reduced outline; trimming the edge face of the substrate along the desired outline by machining with a second distinct tool, without machining the working central portion; and finishing the edge face of the substrate without machining the working central portion.
    Type: Application
    Filed: July 1, 2011
    Publication date: April 18, 2013
    Applicant: ESSILOR INTERNATIONAL (Compagnie Generale d'Optique)
    Inventors: Cedric Lemaire, Cedric Begon, Konogan Baranton, Ahmed Haddadi, Patrice Szymanski, Gerard Poirrier
  • Patent number: 8342909
    Abstract: A device (1) for machining an ophthalmic lens includes a support for the ophthalmic lens and for driving it in rotation about a blocking axis (A1), a machining module (35) that can be swiveled relative to the support and driving the lens in rotation and that is suitable for pivoting about a swivel axis that is not parallel to the blocking axis of the lens, and at least one drill tool mounted to rotate on the machining module about a first axis of rotation. The machining device includes at least one other machining tool mounted to rotate on the machining module about another axis of rotation that is distinct from the first axis of rotation and that is stationary relative to the first axis of rotation.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: January 1, 2013
    Assignee: Essilor International (Compagnie Generale d'Optique)
    Inventors: Cédric Lemaire, Tony Michel, Gaël Mazoyer, André Menant
  • Patent number: 8133095
    Abstract: A method of shaping an ophthalmic lens includes machining the edge face of the lens by at least one rotary tool having an axis of rotation movable relative to the lens axis, both in rotation and radial and axial translation. These movements are controlled so that the edge face of the lens presents a profiled shape with an engagement ridge suitable for engaging in a bezel of eyeglasses and first and second margins. Given first and second longitudinal curves of the first and second margins, respectively, the edge face of the lens is machined in such a manner that, at each axial section of the lens, the traces in the axial section of the first and second longitudinal curves present first and second distances from the axis of the lens, with the difference (rs) therebetween being a function of the position of the plane of the axial section under consideration.
    Type: Grant
    Filed: September 24, 2007
    Date of Patent: March 13, 2012
    Assignee: Essilor International (Compagnie Generale d'Optique)
    Inventors: Cedric Lemaire, Ahmed Haddadi
  • Patent number: 8128463
    Abstract: The present invention relates to a device and to a method for shaping an optical lens. According to the invention, a selection is provided between either a first tool (50) for machining the edge face of the lens, and a cutter tool (637) for cutting through the material of the lens, for the purpose of performing at least one given shaping operation. The invention also provides a method of shaping an optical lens coated in a treatment with low surface energy, the method including cutting through the material of the lens.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: March 6, 2012
    Assignee: Essilor International (Compagnie Generale d'Optique)
    Inventors: Cedric Lemaire, Michel Nauche
  • Patent number: 8087150
    Abstract: A method of shaping an optical lens (100) includes at least one operation of edging along a desired outline that includes cutting through the material of the lens (100) includes a cutting-out tool (637). Cutting out includes a plurality of passes, each performed along the desired outline as a pass that is axially shallow.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: January 3, 2012
    Assignee: Essilor International (Compagnie Generale d'Optigue)
    Inventors: Cedric LeMaire, Michel Nauche