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    MULTIFOCAL OCULAR LENS
    1.
    发明专利
    MULTIFOCAL OCULAR LENS 失效

    公开(公告)号：JPH11194308A

    公开(公告)日：1999-07-21

    申请号：JP29541498

    申请日：1998-10-16

    Applicant: ESSILOR INT

    Inventor： CHAUVEAU JEAN-PIERRE ,  BOURDONCLE BERNARD ,  FRANCOIS SANDRINE

    IPC: G02C7/06 ,  A61F2/16 ,  G02C7/02

    Abstract: PROBLEM TO BE SOLVED: To provide the well proportioned apportionment of isospherical value lines and isocylindrical value lines by assuring rapid progression of average spherical values and assuring the presence of a large near sight region. SOLUTION: This lens 1 is the multifocal ocular lens including an aspherical surface having an average spherical value and cylindrical value at all points thereon and includes the main meridian 2 of the progression passing the three regions; the far sight region VL, the near sight region VP and the intermediate sight region VI. The main length of the progression regulated as a ratio between a power increment value and the max. inclination of the average spherical value along the meridian 2 is set shorter than 16 mm. The spherical value is monotonously changed on both sides of the meridian 2 as a function of an angle on a radial circle of 20 mm to be aligned to the geometrical center of the lens 1. The far sight region VL delineated in the upper part of the lens 1 by a line formed at the point equal to the power increment of half the cylindrical value is formed to have an angle region having a start point at the geometrical center of the lens 1 having a bevel angle larger than 150 deg..

    PAIR OF MULTIFOCAL PROGRESSIVE SPECTACLE LENSES
    2.
    发明申请
    PAIR OF MULTIFOCAL PROGRESSIVE SPECTACLE LENSES 审中-公开
    一对多镜头渐进镜片

    公开(公告)号：WO0146744A3

    公开(公告)日：2001-11-08

    申请号：PCT/EP9910313

    申请日：1999-12-22

    Applicant: ESSILOR INT

    Inventor： BOURDONCLE BERNARD ,  FRANCOIS SANDRINE

    IPC: G02B3/10 ,  G02C7/02

    CPC classification number: G02C7/063 ,  G02C7/027 ,  G02C7/061 ,  G02C7/065

    Abstract: The invention relates to a pair of progressive ophthalmic spectacle lenses; each lens has an aspherical surface with a far vision zone, an intermediate vision zone and a near vision zone, and good monocular and binocular foveal vision along the principal meridian. At each point of the aspherical surface there is a mean sphere which is proportional to the half sum of the maximum and minimum radii of curvature expressed in meters, and to the refractive index of the lens material. The invention suggests reducing, for a given direction of sight, the absolute value of the difference between a binocularity parameter for two points in the object space. The binocularity parameter is defined for a point in the object space as the relative difference DELTA S of the mean sphere for the points of the aspherical surface of the right and left lenses through which the wearer sees said point.

    Abstract translation: 本发明涉及一对渐进式眼科眼镜镜片; 每个镜片都有一个非球面表面，具有远视区，中间视区和近视区，沿着主子午线具有良好的单眼和双眼中心凹视力。 在非球面的每个点处，存在平均球面，其与以米表示的最大和最小曲率半径以及透镜材料的折射率的半值之和成比例。 本发明建议，对于给定的视线方向，减小对象空间中两点的双眼性参数之间的差异的绝对值。 对于物体空间中的点，双眼性参数被定义为佩戴者通过其看到所述点的右和左镜片的非球面的点的平均球面的相对差ΔS。

    5.
    发明专利
    未知

    公开(公告)号：AT515716T

    公开(公告)日：2011-07-15

    申请号：AT06290653

    申请日：2006-04-21

    Applicant: ESSILOR INT

    Inventor： BOURDONCLE BERNARD ,  MARIN GILDAS

    IPC: G02C7/02

    Abstract: The method involves choosing a starting lens having a fitting cross marking a primary viewing direction under wearing conditions and an umbilical progression meridian. The meridian is provided with a power addition greater than or equal to two diopters between far and near vision reference points. A current lens used as target is optimized under wearing conditions. A progression length is defined as the angle of lowered viewing from the fitting cross to a point of the meridian at which a wearer`s optical power reaches 85 percentages of a prescription. Independent claims are also included for the following: (1) a progressive multifocal ophthalmic lens with a complex surface (2) a visual device comprising a progressive multifocal ophthalmic lens (3) a method for correcting a vision of a presbyopic subject.

    6.
    发明专利
    未知

    公开(公告)号：AT499626T

    公开(公告)日：2011-03-15

    申请号：AT06290654

    申请日：2006-04-21

    Applicant: ESSILOR INT

    Inventor： BOURDONCLE BERNARD ,  DECRETON BRUNO

    IPC: G02C7/02

    Abstract: The progressive multifocal ophthalmic lens with a complex surface including a prism reference point, a cross mounting unit located at 8[deg] above the reference point, and an umbilicated progression meridian with a power addition value of >=1.5 diopter. The power addition value lies between the reference point of far and near vision. Radius of curvature of the lens is adjusted for the far vision using a reduced root mean square deviation with the power addition lower than 0.65 mu m by diopter. The progressive multifocal ophthalmic lens with a complex surface including a prism reference point, a cross mounting unit located at 8[deg] above the reference point, and an umbilicated progression meridian with a power addition value of >=1.5 diopter. The power addition value lies between the reference point of far and near vision. Radius of curvature of the lens is adjusted for the far vision using a reduced root mean square deviation with the power addition lower than 0.65 mu m by diopter, a zone bounded by a centered circle on the prism reference point and by a diameter of the circle corresponding to sweep angle of 80[deg], a progression length is =25[deg], and a difference in reduced root mean square deviation is lower than 0.12 mu m by diopter. The reduced root mean square deviation is determined by calculating the nullified coefficient of orders of 1 and 2 correspond to defocalization in Zernike polynomial decomposition of a wave front face passes through the lens. The progression length is defined as lower common angle of the cross mounting unit up to the point of the meridian for which an optical power carrier reaches 85% of the power addition value. The difference in the reduced root mean square deviation is calculated by an absolute value. The zone comprises a control point of far vision in which the zone is bounded by the half centered circle on the cross mounting unit and by radius of the circle corresponds to an elevation of 25[deg]. The difference in the reduced root mean square deviation between two symmetrical points in half circle is =0.12 mu m by diopter below a horizontal line located at 8[deg] above the cross mounting unit. The half circle has a horizontal base that passes through the cross mounting unit. The symmetrical axis of the half circle is scattered with the progression meridian. Independent claims are included for: (1) a visual equipment; (2) a long-sighted vision correction process; and (3) a lens assembling process.

    PAIR OF MULTIFOCAL PROGRESSIVE SPECTACLE LENSES
    7.
    发明专利
    PAIR OF MULTIFOCAL PROGRESSIVE SPECTACLE LENSES 未知

    公开(公告)号：CA2363121C

    公开(公告)日：2008-12-09

    申请号：CA2363121

    申请日：1999-12-22

    Applicant: ESSILOR INT

    Inventor： FRANCOIS SANDRINE ,  BOURDONCLE BERNARD

    IPC: G02C7/06 ,  G02B3/10 ,  G02C7/02

    Abstract: The invention relates to a pair of progressive ophthalmic spectacle lenses; each lens has an aspherical surface with a far vision zone, an intermediate vision zone and a near vision zone, and good monocular and binocular foveal vision along the principal meridian. At each point of the aspherical surface there is a mean sphere which is proportional to the half sum of the maximum and minimum radii of curvature expressed in meters, and to the refractive index of the lens material. The invention suggests reducing, for a given direction of sight, the absolute value of the difference between a binocularity parameter for two points in the object space. The binocularity parameter is defined for a point in the object space as the relative difference .DELTA.S of the mean sphere for the points of the aspherical surface of the right and left lenses through which the wearer sees said poin t.

    MULTIFOCAL OPHTHALMIC LENS
    8.
    发明专利
    MULTIFOCAL OPHTHALMIC LENS 未知

    公开(公告)号：CA2250615C

    公开(公告)日：2007-07-24

    申请号：CA2250615

    申请日：1998-10-15

    Applicant: ESSILOR INT

    Inventor： FRANCOIS SANDRINE ,  BOURDONCLE BERNARD ,  CHAUVEAU JEAN-PIERRE

    IPC: G02C7/06 ,  A61F2/16 ,  G02C7/02

    Abstract: A multifocal ophthalmic lens comprising a far vision region, a near vision region an intermediate vision region and a main meridian of progression passing through these three regions is provided in which a principal length of progression, defined as a ratio between power addition and maximum slope of mean sphere along the meridian is less than 16 mm, sphere varies in a monotonous fashion as a function of angle on a 20 mm radius circle centered on a geometric center of the lens at both sides of said meridian, and in which the far vision region delimited in an upper portion of said lens by lines formed of points for which cylinder is equal to half power addition includes an angular sector having its origin at the geometric center of the lens with an included angle greater than 150.degree.. This provides a good distribution of isocylinder and ionosphere lines over the lens, ensuring progression is very gentle. .THETA.

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