Patents by Inventor Frederic Dubois
Frederic Dubois 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).
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Patent number: 8540367Abstract: A method of selecting a semi-finished ophthalmic lens according to a given spectacle frame comprising the steps of: providing the spectacle frame front face base data providing a list of semi-finished ophthalmic lenses with a plurality of front face bases, and selecting from the list of semi-finished ophthalmic lenses the semi-finished ophthalmic lens whose front base is the closest from the front base of the spectacle frame.Type: GrantFiled: December 23, 2008Date of Patent: September 24, 2013Assignee: Essilor International (Compagnie Generale D'Optique)Inventors: Frédéric Dubois, Cécile Pietri, Pauline Colas, David Freson
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Patent number: 8439500Abstract: A method of calculating an optical system (OS) of an ophthalmic lens according to a given spectacle frame comprising the steps of: providing geometrical data of the spectacle frame, providing wearer data, and optimization of the optical system (OS) according to at least the criteria consisting of the geometrical data of the spectacle frame, the wearer data and at least one positioning data, so as to generate at least two optical surfaces (S1, S2).Type: GrantFiled: December 23, 2008Date of Patent: May 14, 2013Inventors: Frédéric Dubois, Cyril Guilloux, Pascal Allione, Cécile Pietri, David Freson, Christian Joncour
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Patent number: 8408701Abstract: A method for generating a trimming setpoint for an ophthalmic lens to be fitted in a surround of a spectacle frame, includes: a) within a coordinate system of the surround identified by a horizontal axis, acquiring the shape of a longitudinal profile of the surround and the perimeter length of this longitudinal profile; b) within an optical coordinate system of the ophthalmic lens which is identified by a centering point and by a horizontal axis and which is made to coincide with the coordinate system of the surround, centering and orienting the longitudinal profile, c) projecting the acquired longitudinal profile onto a curved surface deduced from a curvature parameter of the ophthalmic lens or from the spectacle frame, d) correcting in two operations, the shape of the projected longitudinal profile, so as to equalize its perimeter length with the perimeter length of the acquired longitudinal profile, and e) deducing from the corrected longitudinal profile the trimming setpoint.Type: GrantFiled: September 7, 2010Date of Patent: April 2, 2013Assignee: Essilor International (Compagnie Generale d'Optique)Inventors: Jérémie Biton, Frédéric Dubois, David Freson, Eric Belloni
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Patent number: 8388133Abstract: A method for determining the shape of the bevel of an ophthalmic lens so as to have the ophthalmic lens fit a given spectacle frame, the method comprising the steps of: providing the three-dimensional (xi, yi, zi) internal profile of the groove of at least a rim of the spectacle frame expressed in the principal axes (Xf, Yf, Zf) of the spectacle frame and the length Pf of the periphery of the groove of the rim, providing the blocking point of the ophthalmic lens and the horizontal direction Xl of the ophthalmic lens, projecting the three-dimensional (xi, yi, zi) internal profile of the groove of the rim on the front face surface of the ophthalmic lens so as to obtain a three-dimension projected groove shape (xp, yp, zp), modifying the coordinates of each point of the two-dimensional groove shape (xp, yp) based on two correction coefficient, Rx for the coordinate xp and Ry for the coordinate yp, with Rx+Ry=1 so as to have the length Pp of the three-dimensional groove projected shape (xp, yp, zp) equal to the lType: GrantFiled: December 23, 2008Date of Patent: March 5, 2013Assignee: Essilor International (Compagnie Generale d'Optique)Inventors: David Freson, Frédéric Dubois
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Patent number: 8381408Abstract: A method for determining a contour data set of a spectacle frame rim comprising the steps of: a) providing a plurality (N) of three dimensional measured points along a contour of a spectacle frame rim; b) calculating a plurality of best torus that fits P points chosen among the N measured points and where P is equal or more than 4; c) selecting the (T) points among the N measured points that deviate from one of the best torus more than a threshold value; and d) forming the contour data set with (N-T) three dimensional measured points where the T selected points of step c) are excluded from the list of three dimensional measured points of step a).Type: GrantFiled: December 23, 2008Date of Patent: February 26, 2013Assignee: Essilor International (Compagnie Generale d'Optique)Inventors: Frédéric Dubois, David Freson
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Patent number: 8352065Abstract: A method for generating a trimming setpoint for an ophthalmic lens for it to be mounted in a surround of a spectacle frame, includes: a) acquiring the shape of a first longitudinal profile of the surround, b) constructing, on a two-dimensional projection of the first longitudinal profile, at least two predetermined geometrical figures, by adjusting their dimensions to those of the two-dimensional projection, c) calculating differences between the two-dimensional projection of the first longitudinal profile and each of the predetermined geometrical figures, d) from the target geometrical figures, each of which has an associated trimming parameter, selecting the target geometrical figure that is closest to the first longitudinal profile according to the differences, e) calculating the trimming setpoint according to the shape of the first longitudinal profile and the trimming parameter associated with the selected target geometrical figure.Type: GrantFiled: September 3, 2010Date of Patent: January 8, 2013Assignee: Essilor International (Compagnie Generale d'Optique)Inventors: Frédéric Dubois, David Freson, Eric Belloni
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Patent number: 8308294Abstract: A method of calculating an optical system (OS) of an ophthalmic lens according to a given spectacle frame comprising the steps of: providing geometrical data of the spectacle frame, providing deformability data of the spectacle frame, providing wearer data, providing a surface curvature of a front face of the ophthalmic lens, and optimization of both the optical system (OS) and the edging parameter according to the list of the optimization criteria consisting of the geometrical and deformability data of the spectacle frame and the wearer data, so as to generate at least one optical surface different from the front surface of the lens.Type: GrantFiled: December 23, 2008Date of Patent: November 13, 2012Assignee: Essilor International (Compagnie Generale d'Optique)Inventors: Frédéric Dubois, David Freson, Benoît Holvoet-Vermaut
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Patent number: 8295581Abstract: A method is disclosed for detecting defects in an optical component to be tested, such as a lens comprising the steps of: providing a structured pattern, recording the reflected or transmitted image of the pattern on the optical component to be tested, phase shifting the pattern and recording again similarly the reflected or transmitted image, calculating the local phase and amplitude images of the optical component to be tested, calculating a model image of a defect free optical component and determining corresponding phase and amplitude images of the defect free model optical component, comparing phase and amplitude images of both optical component to be tested and defect free model optical component, determining suspect zones in the optical component to be tested, and applying a metrics to separate dust and noise from other defects.Type: GrantFiled: April 14, 2008Date of Patent: October 23, 2012Assignee: Essilor International (Compagnie Generale d'optique)Inventors: Frédéric Dubois, Fabrice Gibrat, Guy Schott, Philippe Raulot
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Patent number: 8205986Abstract: A method for generating a trimming setpoint for an ophthalmic lens for it to be fitted in a surround of a half-rim spectacle frame, includes the steps of: a) acquiring the planar coordinates of a plurality of first points characterizing the shape of a first longitudinal profile of the surround; b) determining the spatial coordinates of second points of a second longitudinal profile, obtained from a projection of the first longitudinal profile onto a predetermined reference surface, c) calculating the perimeter length of the second longitudinal profile, d) determining the spatial coordinates of third points of a third longitudinal profile, obtained from a projection of the first or of the second longitudinal profile on a curved surface deduced from a shape parameter of the ophthalmic lens, e) correcting the spatial coordinates of the third points, so as to equalize the perimeter length of the third longitudinal profile with the perimeter length of the second longitudinal profile, f) deducing the machining sType: GrantFiled: September 3, 2010Date of Patent: June 26, 2012Assignee: Essilor International (Compagnie Generale d'Optique)Inventors: Frédéric Dubois, David Freson
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Publication number: 20120108144Abstract: A predictive calculation method for calculating the shape of a cross-section of an engagement ridge of an ophthalmic lens obtained by beveling the lens with a beveling grindwheel driven in accordance with an initial path setting. The method includes the following steps: acquiring the initial path setting for the beveling grindwheel relative to the lens; determining at least two approximations (Sii, Sij) of the shape of the cross-section under consideration of the engagement ridge, the approximations being deduced from the intersection between the beveling grindwheel and the ophthalmic lens when the beveling grindwheel is situated at two distinct positions of the initial path setting; determining the intersection between these two approximations; and deducing therefrom the shape (Si) of the cross-section under consideration of the engagement ridge.Type: ApplicationFiled: June 16, 2011Publication date: May 3, 2012Applicant: Essilor International (Compagnie Generale d"Optique)Inventors: Frédéric Dubois, Eric Belloni, David Freson, Richard Kot
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Publication number: 20110149234Abstract: A method for generating a trimming setpoint for an ophthalmic lens to be fitted in a surround of a spectacle frame, includes: a) within a coordinate system of the surround identified by a horizontal axis, acquiring the shape of a longitudinal profile of the surround and the perimeter length of this longitudinal profile; b) within an optical coordinate system of the ophthalmic lens which is identified by a centering point and by a horizontal axis and which is made to coincide with the coordinate system of the surround, centering and orienting the longitudinal profile, c) projecting the acquired longitudinal profile onto a curved surface deduced from a curvature parameter of the ophthalmic lens or from the spectacle frame, d) correcting in two operations, the shape of the projected longitudinal profile, so as to equalize its perimeter length with the perimeter length of the acquired longitudinal profile, and e) deducing from the corrected longitudinal profile the trimming setpoint.Type: ApplicationFiled: September 7, 2010Publication date: June 23, 2011Applicant: Essilor International (Compagnie Generale d'Optique)Inventors: Jérémie BITON, Frédéric DUBOIS, David FRESON, Eric BELLONI
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Publication number: 20110141435Abstract: A method for generating a trimming setpoint for an ophthalmic lens for it to be fitted in a surround of a half-rim spectacle frame, includes the steps of: a) acquiring the planar coordinates of a plurality of first points characterizing the shape of a first longitudinal profile of the surround; b) determining the spatial coordinates of second points of a second longitudinal profile, obtained from a projection of the first longitudinal profile onto a predetermined reference surface, c) calculating the perimeter length of the second longitudinal profile, d) determining the spatial coordinates of third points of a third longitudinal profile, obtained from a projection of the first or of the second longitudinal profile on a curved surface deduced from a shape parameter of the ophthalmic lens, e) correcting the spatial coordinates of the third points, so as to equalize the perimeter length of the third longitudinal profile with the perimeter length of the second longitudinal profile, f) deducing the machining sType: ApplicationFiled: September 3, 2010Publication date: June 16, 2011Applicant: Essilor International (Compagnie Generale d'Optique)Inventors: Frédéric DUBOIS, David FRESON
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Publication number: 20110085132Abstract: A method of determining parameters for fitting an ophthalmic lens to a frame, including the following steps: providing an eyeglass frame including at least one temple portion having a bezel intended to enable the nesting of an ophthalmic lens; and determining the shape of the profile of the bezel at a point in the temple portion of said frame. Associated method of fabricating an ophthalmic lens.Type: ApplicationFiled: December 24, 2008Publication date: April 14, 2011Inventors: Frédéric Dubois, David Freson
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Publication number: 20110066276Abstract: A method for generating a trimming setpoint for an ophthalmic lens for it to be mounted in a surround of a spectacle frame, includes: a) acquiring the shape of a first longitudinal profile of the surround, b) constructing, on a two-dimensional projection of the first longitudinal profile, at least two predetermined geometrical figures, by adjusting their dimensions to those of the two-dimensional projection, c) calculating differences between the two-dimensional projection of the first longitudinal profile and each of the predetermined geometrical figures, d) from the target geometrical figures, each of which has an associated trimming parameter, selecting the target geometrical figure that is closest to the first longitudinal profile according to the differences, e) calculating the trimming setpoint according to the shape of the first longitudinal profile and the trimming parameter associated with the selected target geometrical figure.Type: ApplicationFiled: September 3, 2010Publication date: March 17, 2011Applicant: Essilor International (Compagnie Generale d'Optique)Inventors: Frederic DUBOIS, David FRESON, Eric BELLONI
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Patent number: 7908187Abstract: A digital processing system supporting management of purchase orders according to chargeable subcontracting model in an outsourcing organization. In one embodiment, when a user provides an order for a desired quantity of an assembly type from an external organization, the digital processing system automatically raises a sales order, as originating from the external organization, corresponding to each of a set of components required for manufacturing the assembly type. On receiving a receipt indication indicating the successful delivery of the order, the digital processing system calculates a net payable amount to be paid to the external organization. Additional aspects of the invention facilitate setting up of chargeable contracting model with simulated (within the digital processing system) external organizations, planning of purchase orders, etc.Type: GrantFiled: September 26, 2007Date of Patent: March 15, 2011Assignee: Oracle International CorporationInventors: Kachireddy Venkata Sesha Muralidhar Reddy, Rajesh Krishnan, Frederic Dubois, Satoru Kengaku, Vincent Shu-Lai Chu, Prabha Seshadri, Neelam Soni, Vamshi Krishna Mutyala
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Patent number: 7880902Abstract: The probe comprises a light source (20), means for shaping (24, 25, 21) the beam emitted by said light source and the beam coming from a surface arranged close to a target distance, an optical detector unit (22), comprising a pinhole diaphragm (26) and a photoelectric detector (28), providing a voltage peak (31) when said surface is at said target distance and further comprising a diaphragm (27) with a hole larger than said pinhole and a photoelectric detector (29), providing a voltage greater than that produced by said detection sensor (28), except when said surface is a the target distance. The method uses the probe to measure the thickness of an optical lens.Type: GrantFiled: January 11, 2006Date of Patent: February 1, 2011Assignees: Essilor International (Compagnie Generale d'Optique), MB OptiqueInventors: Frederic Dubois, Michael Bray
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Publication number: 20100293069Abstract: A method for modifying spectacle frame shape data, comprising the steps of: generating spectacle frame data by measuring the shape of a rim of a spectacle frame with a spectacle frame shape measuring apparatus, determining the principal axes of inertia of the measured shape of the rim of the spectacle frame using the rim spectacle frame data, and calculating new spectacle rim frame data expressed in the principal axes of inertia of the measured shape of the rim of the spectacle frame.Type: ApplicationFiled: December 23, 2008Publication date: November 18, 2010Inventors: David Freson, Frédéric Dubois
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Publication number: 20100290694Abstract: A method is disclosed for detecting defects in an optical component to be tested, such as a lens comprising the steps of: providing a structured pattern, recording the reflected or transmitted image of the pattern on the optical component to be tested, phase shifting the pattern and recording again similarly the reflected or transmitted image, calculating the local phase and amplitude images of the optical component to be tested, calculating a model image of a defect free optical component and determining corresponding phase and amplitude images of the defect free model optical component, comparing phase and amplitude images of both optical component to be tested and defect free model optical component, determining suspect zones in the optical component to be tested, and applying a metrics to separate dust and noise from other defects.Type: ApplicationFiled: April 14, 2008Publication date: November 18, 2010Inventors: Frédéric Dubois, Fabrice Gibrat, Guy Schott, Philippe Raulot
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Publication number: 20100290003Abstract: A method of calculating an optical system (OS) of an ophthalmic lens according to a given spectacle frame comprising the steps of: providing geometrical data of the spectacle frame, providing deformability data of the spectacle frame, providing wearer data, providing a surface curvature of a front face of the ophthalmic lens, and optimization of both the optical system (OS) and the edging parameter according to the list of the optimization criteria consisting of the geometrical and deformability data of the spectacle frame and the wearer data, so as to generate at least one optical surface different from the front surface of the lens.Type: ApplicationFiled: December 23, 2008Publication date: November 18, 2010Inventors: Frédéric Dubois, David Freson, Benoît Holvoet-Vermaut
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Publication number: 20100290002Abstract: A method for determining a contour data set of a spectacle frame rim comprising the steps of: a) providing a plurality (N) of three dimensional measured points along a contour of a spectacle frame rim; b) calculating a plurality of best torus that fits P points chosen among the N measured points and where P is equal or more than 4; c) selecting the (T) points among the N measured points that deviate from one of the best torus more than a threshold value; and d) forming the contour data set with (N-T) three dimensional measured points where the T selected points of step c) are excluded from the list of three dimensional measured points of step a).Type: ApplicationFiled: December 23, 2008Publication date: November 18, 2010Applicant: Essilor International (Compagnie Generale D"Optique)Inventors: Frédéric Dubois, David Freson