Patents by Inventor Cédric Lemaire
Cédric 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).
-
Publication number: 20140300858Abstract: 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: ApplicationFiled: August 29, 2012Publication date: October 9, 2014Applicant: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)Inventors: Cedric Lemaire, Sebastien Pinault
-
Patent number: 8747187Abstract: 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: GrantFiled: April 19, 2011Date of Patent: June 10, 2014Assignee: Essilor International (Compagnie Generale d'Optique)Inventors: Cédric Lemaire, Philippe Pinault, David Tang
-
Publication number: 20130095733Abstract: 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: ApplicationFiled: July 1, 2011Publication date: April 18, 2013Applicant: ESSILOR INTERNATIONAL (Compagnie Generale d'Optique)Inventors: Cedric Lemaire, Cedric Begon, Konogan Baranton, Ahmed Haddadi, Patrice Szymanski, Gerard Poirrier
-
Patent number: 8342909Abstract: 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: GrantFiled: October 9, 2007Date of Patent: January 1, 2013Assignee: Essilor International (Compagnie Generale d'Optique)Inventors: Cédric Lemaire, Tony Michel, Gaël Mazoyer, André Menant
-
Patent number: 8133095Abstract: 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: GrantFiled: September 24, 2007Date of Patent: March 13, 2012Assignee: Essilor International (Compagnie Generale d'Optique)Inventors: Cedric Lemaire, Ahmed Haddadi
-
Publication number: 20120058714Abstract: 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: ApplicationFiled: September 1, 2011Publication date: March 8, 2012Applicant: ESSILOR INTERNATIONAL (COMPANIE GENERALE D'OPTIQUE)Inventors: Cédric LEMAIRE, Romain BATHEROSSE
-
Patent number: 8128463Abstract: 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: GrantFiled: April 24, 2007Date of Patent: March 6, 2012Assignee: Essilor International (Compagnie Generale d'Optique)Inventors: Cedric Lemaire, Michel Nauche
-
Patent number: 8087150Abstract: 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: GrantFiled: April 24, 2007Date of Patent: January 3, 2012Assignee: Essilor International (Compagnie Generale d'Optigue)Inventors: Cedric LeMaire, Michel Nauche
-
Publication number: 20110256804Abstract: The invention relates to a method of shaping an ophthalmic lens to have a desired outline (11) by means of a machining device including a blocking support for the ophthalmic lens and at least one first machining tool, the method comprising the steps of: obtaining an inner cutting limit (12) for said first machining tool; defining an initial blocking position (P1) for the ophthalmic lens and its desired outline; calculating whether at least a portion of the desired outline presents a non-zero intersection (Q21-Q22) with said inner cutting limit; defining as the final blocking position (PF) either the unchanged initial blocking position if the intersection calculated the calculation step 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 dType: ApplicationFiled: April 19, 2011Publication date: October 20, 2011Applicant: Essilor International (Compagnie Generale d'Optique)Inventors: Cédric LEMAIRE, Philippe PINAULT, David TANG
-
Publication number: 20100112908Abstract: 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: ApplicationFiled: September 24, 2007Publication date: May 6, 2010Applicant: ESSIL OR INTERNATIONAL (COMPAGNIE GÉNÉRALE D'OPTIQInventors: Cedric Lemaire, Ahmed Haddadi
-
Publication number: 20100093265Abstract: 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: ApplicationFiled: October 9, 2007Publication date: April 15, 2010Applicant: ESSILOR INTERNATIONAL (COMPAGNIE GENERAL D'OPTIQUEInventors: Cedric Lemaire, Tony Michel, Gael Mazoyer, Andre Menant
-
Patent number: 7508502Abstract: A device (100) enabling automatic detection of the index marks of an ophthalmic lens (10), includes a support (110) which is adapted in such a way as to receive the lens, and, on each side of the support, first elements (120) for the illumination of the ophthalmic lens installed on the support, and first elements (130) for analysis and acquisition of the light transmitted by the lens. The device also includes an activatable and deactivatable pattern filter (140) arranged between the first illuminating elements and the support.Type: GrantFiled: November 4, 2004Date of Patent: March 24, 2009Assignee: Essilor International (Compagnie Generale d'Optique)Inventors: Fabien Divo, Cédric Lemaire
-
Publication number: 20090064481Abstract: The method of shaping an optical lens (100) comprises at least one operation of edging along a desired outline that includes cutting through the material of the lens (100) by means of a cutting-out tool (637). Cutting out comprises a plurality of passes, each performed along the desired outline as a pass that is axially shallow.Type: ApplicationFiled: April 24, 2007Publication date: March 12, 2009Applicant: ESSILOR INTERNATIONAL(Compagnie Generale d'OptiqueInventors: Cedric Lemaire, Michel Nauche
-
Publication number: 20090068932Abstract: 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: ApplicationFiled: April 24, 2007Publication date: March 12, 2009Applicant: Essilor International (Compagnie Generale d'OpitquInventors: Cedric Lemaire, Michel Nauche
-
Patent number: 7429106Abstract: A method of verifying at least one centering characteristic of an ophthalmic lens provided with markings and mounted on a frame, the method includes: a) positioning the ophthalmic lens on a support placed facing a pattern filter; b) using a diffuse light source to illuminate the ophthalmic lens through the pattern filter; c) using a digital camera to pick up the light transmitted by the ophthalmic lens; d) processing the signal output by the digital camera to determine the positions of the markings of the ophthalmic lens in a stationary frame of reference; e) determining the position of the support in the stationary frame of reference; and f) deducing the value of the centering characteristic from the known position of the support and from the positions of the permanent markings of the ophthalmic lens.Type: GrantFiled: November 4, 2004Date of Patent: September 30, 2008Assignee: Essilor InternationalInventors: Fabien Divo, Cédric Lemaire
-
Publication number: 20070115353Abstract: A device (100) enabling automatic detection of the index marks of an ophthalmic lens (10), includes a support (110) which is adapted in such a way as to receive the lens, and, on each side of the support, first elements (120) for the illumination of the ophthalmic lens installed on the support, and first elements (130) for analysis and acquisition of the light transmitted by the lens. The device also includes an activatable and deactivatable pattern filter (140) arranged between the first illuminating elements and the support.Type: ApplicationFiled: November 4, 2004Publication date: May 24, 2007Applicant: Essilor International (Compagnie Generale D'optiqueInventors: Fabien Divo, Cedric Lemaire