公开(公告)号：CA2830638C

公开(公告)日：2018-07-24

申请号：CA2830638

申请日：2012-03-22

Applicant: ESSILOR INT

Inventor： DE ROSSI HELENE ,  MOINE JEROME ,  REGO CARLOS ,  GUILLOT MATTHIEU

IPC: G02C7/02

Abstract: The invention relates to a progressive ophthalmic lens comprising a front surface and a rear surface, each surface having in each point an altitude, a mean sphere value and a cylinder value, the front surface of the lens comprising: - a far vision zone having a far vision reference point; - a near vision zone having a near vision reference point; - a main meridian, wherein the front surface is regressive and has: - a sphere gradient normalized value of less than 7.50.10-1 mm-1 at any point in a central portion of the lens including a portion of the main meridian (32), the far vision reference point (FV) and the near vision reference point (NV); - a cylinder gradient normalized value of less than 1.45 mm-1 at any point in the central portion of the lens.

公开(公告)号：CA2827710C

公开(公告)日：2018-07-24

申请号：CA2827710

申请日：2011-11-16

Applicant: ESSILOR INT

Inventor： DE ROSSI HELENE ,  MURADORE FABIEN

IPC: G02C7/02 ,  G02C7/06

Abstract: The invention relates to a method for determining a progressive ophthalmic lens wherein: - a first or a second reference axes (G1, G2) are determined, the first reference axis being set to a value comprised between [?T - 20°, ?T + 20°] with ?-T being the average axis of astigmatism over a first temporal portion (Portion1), and the second reference axis being set to a value comprised between [?N - 20°, ?N + 20°] with ?N being the average axis of astigmatism over a second nasal portion (Portion2); - over the first portion, the sphere value along the first reference axis is superior to the sphere value along a perpendicular axis to the first reference axis (Formula I); or - over the second portion, the sphere value along the second reference axis is superior to the sphere value along a perpendicular axis to the second reference axis (Formula II). The method enables an improved distortion without degrading the performance in term of correction of the optical power defect and optical residual astigmatism. This results in an increased comfort for the wearer. The invention further relates to a progressive ophthalmic lens, a method for manufacturing a pair of progressive ophthalmic lens, a set of apparatuses for manufacturing a pair of ophthalmic lenses, a set of data, a computer program product and a computer readable medium associated to this method.

公开(公告)号：AU2012351474B2

公开(公告)日：2016-02-25

申请号：AU2012351474

申请日：2012-12-17

Applicant: ESSILOR INT

Inventor： GUILLOT MATTHIEU ,  REGO CARLOS ,  DE ROSSI HELENE

IPC: G02C7/02 ,  G02C7/06

Abstract: The invention relates to a method for determining a progressive ophthalmic lens, comprising: - determining a first intermediate value of regression (d1) as the strongest regression that can be applied on the front surface of the lens while keeping a mean sphere value in at least a portion of the lower part of the rear surface of the lens less or equal to a first predetermined value (V1); - determining a second intermediate value of regression (d2) as the strongest regression that can be applied on the front surface of the lens while keeping a mean sphere value in at least a portion of the lower part of the front surface of the lens superior or equal to a second predetermined value (V2); - determining a third intermediate value of regression (d3) as the strongest regression that can be applied on the front surface of the lens while keeping an addition on the rear surface of the lens less or equal to a third predetermined value (V3); - determining a value of regression (d) for the front surface as the maximum value among the first, second and third intermediate values of regression.

公开(公告)号：AU2012338873B2

公开(公告)日：2016-02-18

申请号：AU2012338873

申请日：2012-11-15

Applicant: ESSILOR INT

Inventor： MURADORE FABIEN ,  DE ROSSI HELENE

IPC: G02C7/02 ,  G02C7/06

Abstract: The invention relates to a method for determining an ophthalmic lens wherein: a first and a second reference axes (&Ggr;ι, &Ggr;2) are determined, the first reference axis being set to a value comprised between [

公开(公告)号：AU2013269656A1

公开(公告)日：2014-11-06

申请号：AU2013269656

申请日：2013-05-30

Applicant: ESSILOR INT

Inventor： PAILLE DAMIEN ,  MARIE SARAH ,  DE ROSSI HELENE

IPC: G02C7/02 ,  G02C7/06

Abstract: A method for providing a personalized optical system for a wearer wherein the optical system characterizes a spectacle ophthalmic lens comprising the following steps: a) providing a visual performance level (VPL) value of at least one eye of the wearer; b) providing a set of rules linking at least the visual performance level of step a) with at least one optical criterion chosen among one or both of the two following optical criteria groups consisting of central vision optical criterion (CVOC) group and peripheral vision optical criterion (PVOC) group; c) calculating the physical and geometrical parameters of the personalized optical system or selecting the personalized optical system in an optical systems data base comprising a plurality of optical systems, so that to meet the set of rules of step b) according to the visual performance level data provided in step a).

公开(公告)号：ZA201305310B

公开(公告)日：2014-09-25

申请号：ZA201305310

申请日：2013-07-15

Applicant: ESSILOR INT (COMPAGNIE GENERALE D'OPTIQUE)

Inventor： CONTET AUDE ,  DE ROSSI HELENE

IPC: G02C20060101

Abstract: A method for determining target optical functions for a pair of ophthalmic lenses is provided, the method comprising steps of: - generating a first target optical function (OFT1) for a first lens of the pair based at least on data relating to a first eye, - generating a second target optical function (OFT2) for a second lens of the pair based at least on data relating to the first eye. This method makes it possible to obtain optical functions having improved symmetry. Thus, when using the target optical functions in an optical optimization method, lenses with improved binocular properties can be obtained. The comfort of the wearer of the pair of lenses is thus improved.

公开(公告)号：CA2855230A1

公开(公告)日：2013-05-23

申请号：CA2855230

申请日：2012-11-15

Applicant: ESSILOR INT

Inventor： MURADORE FABIEN ,  DE ROSSI HELENE

IPC: G02C7/02 ,  G02C7/06

Abstract: The invention relates to a method for determining an ophthalmic lens wherein: a first and a second reference axes (G?, G2) are determined, the first reference axis being set to a value comprised between [?t - 20°, ?t + 20°] with ?t being the mean axis of astigmatism over a first temporal portion (Portion l), and the second reference axis being set to a value comprised between [yN - 20°, YN +20°] with YN being the mean axis of astigmatism over a second nasal portion (Portion 2); a combined reference axis (G) is determined as a linear combination of the first and second reference axes; over the first portion, the sphere value along the combined reference axis is superior to the sphere value along a perpendicular axis to the combined reference axis (Formula I); and over the second portion, the sphere value along the combined reference axis is superior to the sphere value along a perpendicular axis to the combined reference axis (Formula I). The method enables an improved distortion without degrading the performance in term of correction of the optical power defect and optical residual astigmatism. This results in an increased comfort for the wearer. The invention further relates to a progressive ophthalmic lens, a method for manufacturing a pair of progressive ophthalmic lens, a set of apparatuses for manufacturing a pair of ophthalmic lenses, a set of data, a computer program product and a computer readable medium associated to this method.

公开(公告)号：FR2924825B1

公开(公告)日：2010-08-20

申请号：FR0759715

申请日：2007-12-11

Applicant: ESSILOR INT

Inventor： DE ROSSI HELENE ,  DOBRESCU NATALIA ,  MARIE SARAH

IPC: G02C7/06

公开(公告)号：CA2855230C

公开(公告)日：2020-12-29

申请号：CA2855230

申请日：2012-11-15

Applicant: ESSILOR INT

Inventor： MURADORE FABIEN ,  DE ROSSI HELENE

IPC: G02C7/02 ,  G02C7/06

Abstract: The invention relates to a method for determining an ophthalmic lens wherein: a first and a second reference axes (G?, G2) are determined, the first reference axis being set to a value comprised between [?t - 20°, ?t + 20°] with ?t being the mean axis of astigmatism over a first temporal portion (Portion l), and the second reference axis being set to a value comprised between [yN - 20°, YN +20°] with YN being the mean axis of astigmatism over a second nasal portion (Portion 2); a combined reference axis (G) is determined as a linear combination of the first and second reference axes; over the first portion, the sphere value along the combined reference axis is superior to the sphere value along a perpendicular axis to the combined reference axis (Formula I); and over the second portion, the sphere value along the combined reference axis is superior to the sphere value along a perpendicular axis to the combined reference axis (Formula I). The method enables an improved distortion without degrading the performance in term of correction of the optical power defect and optical residual astigmatism. This results in an increased comfort for the wearer. The invention further relates to a progressive ophthalmic lens, a method for manufacturing a pair of progressive ophthalmic lens, a set of apparatuses for manufacturing a pair of ophthalmic lenses, a set of data, a computer program product and a computer readable medium associated to this method.

公开(公告)号：CA2827310C

公开(公告)日：2018-04-10

申请号：CA2827310

申请日：2012-02-17

Applicant: ESSILOR INT

Inventor： CONTET AUDE ,  DE ROSSI HELENE

IPC: G02C7/02 ,  G02C7/06

Abstract: A method for determining target optical functions for a pair of ophthalmic lenses is provided, the method comprising steps of: - generating a first target optical function (OFT1) for a first lens of the pair based at least on data relating to a first eye, - generating a second target optical function (OFT2) for a second lens of the pair based at least on data relating to the first eye. This method makes it possible to obtain optical functions having improved symmetry. Thus, when using the target optical functions in an optical optimization method, lenses with improved binocular properties can be obtained. The comfort of the wearer of the pair of lenses is thus improved.