METHOD FOR THE DETERMINATION OF A PROGRESSIVE OPHTHALMIC LENS

    公开(公告)号:CA2580216A1

    公开(公告)日:2007-09-01

    申请号:CA2580216

    申请日:2007-03-01

    Applicant: ESSILOR INT

    Abstract: A method for the determination by optical optimization of a personalized progressive ophthalmic lens intended to be inserted into a frame chosen by a given wearer for whom a power addition has been prescribed in near vision, the method comprising the stages of: - determining at least one parameter representing the frame chosen by the wearer; - measuring parameters representing the wearer's head-eye behaviour; - weighting the parameters representing the wearer's head-eye behaviour with the parameter representing the frame chosen by the wearer; - determining power and resulting astigmatism defect targets for each direction of viewing under wearing conditions, the targets being associated with an individual merit function taking into account the weighted head-eye coordination parameters. The method allows the design of the lens to be adapted to the size and the shape of the frame chosen.

    LENTILLE OPHTALMIQUE
    12.
    发明专利

    公开(公告)号:FR2871248A1

    公开(公告)日:2005-12-09

    申请号:FR0406002

    申请日:2004-06-03

    Applicant: ESSILOR INT

    Abstract: Une lentille ophtalmique est dédiée à la vision de loin et à la vision intermédiaire. Elle présente une surface complexe ayant un centre optique, une méridienne sensiblement ombilique et une progression de sphère moyenne sur la surface supérieure ou égale à 0,50 dioptries. La surface complexe a, dans sa partie supérieure, une zone de vision de loin formée de points de cylindre inférieur ou égal à 0,25 dioptrie et recouvrant un secteur angulaire centré sur le centre optique et d'un angle de 160°. La surface complexe présente encore une sphère moyenne sensiblement constante sur la méridienne dans la zone de vision de loin et une longueur de progression inférieure ou égale à 12 mm. La longueur de progression est définie comme la distance verticale entre le centre optique et le point de la méridienne pour lequel la sphère moyenne est supérieure de 85% de la progression à la sphère moyenne au centre optique.La lentille est adaptée à la conduite automobile. Elle est prescrite à des sujets présentant une prescription d'addition supérieure à la progression de puissance; elle assure donc dans la partie supérieure de la lentille une correction adaptée à la prescription de puissance du sujet en vision de loin. Dans la partie inférieure de la lentille, la correction fournie par la lentille est celle nécessaire au sujet en vision intermédiaire.

    METHOD FOR THE DETERMINATION OF A PROGRESSIVE OPHTHALMIC LENS

    公开(公告)号:CA2580213C

    公开(公告)日:2015-02-24

    申请号:CA2580213

    申请日:2007-03-01

    Applicant: ESSILOR INT

    Abstract: A method for the determination by optical optimization of a personalized progressive ophthalmic lens intended to be inserted into a frame chosen by a given wearer for whom a power addition has been prescribed in near vision, the method comprising the stages of: - measuring parameters representing the frame chosen by the wearer; - choosing an initial distribution of power and resulting astigmatism defect targets for each direction of viewing under wearing conditions in an ordinary frame; - calculating transformation coefficients using the measured parameters representing the chosen frame and standard parameters; - calculating a personalized distribution of the power and resulting astigmatism defect targets on the lens by applying the calculated transformation coefficients to the initial distribution. The method makes it possible to retain the proportion of the distribution between the far-vision, near-vision and intermediate-vision zones whatever the size and the shape of the frame chosen.

    Ophthalmic lens
    14.
    发明专利

    公开(公告)号:AU2005259138B2

    公开(公告)日:2010-11-04

    申请号:AU2005259138

    申请日:2005-05-31

    Applicant: ESSILOR INT

    Abstract: The invention concerns an ophthalmic lens having a complex surface, with a substantially umbilical meridian and an average sphere progression ranging between 0.50 diopter and 0.75 diopter. The lens is prescribed for esophoric and non-presbyopic users. The lens is prescribed as a standard unifocal lens. Through the presence of the average sphere progression, the user is less adapted to near vision, thus compensating for his/her esophoria.

    LENTILLE OPHTALMIQUE POUR LIMITER LA FATIGUE VISUELLE DES PORTEURS ESOPHORES ET NON PRESBYTES

    公开(公告)号:CA2566981C

    公开(公告)日:2010-02-23

    申请号:CA2566981

    申请日:2005-05-31

    Applicant: ESSILOR INT

    Abstract: Une lentille ophtalmique présente une surface complexe, avec une méridienne sensiblement ombilique et une progression de sphère moyenne supérieure ou égale à 0,50 dioptrie et inférieure à 0,75 dioptrie. La lentille est prescrite aux porteurs ésophores et non presbytes. La lentille est prescrite comme une lentille unifocale classique. Du fait de la présence de la progression de sphère moyenne, le porteur accommode moins en vision de près, ce qui compense son ésophorie.

    VERRE OPHTALMIQUE PROGRESSIF DE CORRECTION DE MYOPIE ET PROCEDE DE REALISATION D'UN TEL VERRE

    公开(公告)号:FR2916864A1

    公开(公告)日:2008-12-05

    申请号:FR0703884

    申请日:2007-05-31

    Applicant: ESSILOR INT

    Abstract: Un verre ophtalmique progressif de correction de myopie comprend une zone supérieure dans laquelle la correction est adaptée à une vision périphérique du porteur. Un tel verre diminue le risque d'une aggravation à long terme de la myopie d'un porteur dudit verre, en réduisant une défocalisation d'une image qui est formée sur la rétine en dehors de la zone fovéale. L'invention concerne aussi un procédé de réalisation d'un tel verre. Selon un perfectionnement, la correction de myopie pour la vision périphérique dans la zone supérieure du verre est ajustée en outre en fonction d'une propension du porteur à tourner plutôt les yeux ou la tête pour regarder un objet excentré.

    17.
    发明专利
    未知

    公开(公告)号:BRPI0704653A

    公开(公告)日:2008-04-22

    申请号:BRPI0704653

    申请日:2007-02-28

    Applicant: ESSILOR INT

    Abstract: A method for the determination by optical optimization of a personalized progressive ophthalmic lens intended to be inserted into a frame chosen by a given wearer for whom a power addition has been prescribed in near vision, the method comprising the stages of: - measuring parameters representing the frame chosen by the wearer; - choosing an initial distribution of power and resulting astigmatism defect targets for each direction of viewing under wearing conditions in an ordinary frame; - calculating transformation coefficients using the measured parameters representing the chosen frame and standard parameters; - calculating a personalized distribution of the power and resulting astigmatism defect targets on the lens by applying the calculated transformation coefficients to the initial distribution. The method makes it possible to retain the proportion of the distribution between the far-vision, near-vision and intermediate-vision zones whatever the size and the shape of the frame chosen.

    METHOD FOR THE DETERMINATION OF A PROGRESSIVE OPHTHALMIC LENS

    公开(公告)号:CA2581650C

    公开(公告)日:2016-10-18

    申请号:CA2581650

    申请日:2007-03-13

    Abstract: A method for the determination of a progressive ophthalmic lens for a given wearer comprises the stages of: - determining the axial length (LA) of the wearer's eye, - determining an ergorama associating a sight point with each direction of viewing under wearing conditions. - determining power and resulting astigmatism defect targets for each direction of viewing under wearing conditions, the targets being a function of the axial length of the wearer's eye. - calculating the power required on the lens for each direction of viewing by successive iterations in order to obtain the target power defect and the target resulting astigmatism.

    METHOD FOR THE DETERMINATION OF A PROGRESSIVE OPHTHALMIC LENS

    公开(公告)号:CA2580216C

    公开(公告)日:2014-12-02

    申请号:CA2580216

    申请日:2007-03-01

    Applicant: ESSILOR INT

    Abstract: A method for the determination by optical optimization of a personalized progressive ophthalmic lens intended to be inserted into a frame chosen by a given wearer for whom a power addition has been prescribed in near vision, the method comprising the stages of: - determining at least one parameter representing the frame chosen by the wearer; - measuring parameters representing the wearer's head-eye behaviour; - weighting the parameters representing the wearer's head-eye behaviour with the parameter representing the frame chosen by the wearer; - determining power and resulting astigmatism defect targets for each direction of viewing under wearing conditions, the targets being associated with an individual merit function taking into account the weighted head-eye coordination parameters. The method allows the design of the lens to be adapted to the size and the shape of the frame chosen.

Patent Agency Ranking