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公开(公告)号：FR2769997B1
公开(公告)日：1999-12-31
申请号：FR9712987
申请日：1997-10-16
Applicant: ESSILOR INT
Inventor： PEDRONO CLAUDE , HARSIGNY CHRISTIAN , FAUQUIER CATHERINE , JURKIEWIEZ FANNY , ROLAND ERIC
Abstract: The lens has an aspherical surface with a geometrical center, a reference point for near vision, and a virtually umbilical and vertical meridian line with a mean spherical and cylindrical value at each point. The area formed by points at a distance of less than 20 mm from the geometrical center and with a cylindrical value of between 0.42 and 0.84 diopter is greater than the area formed by points at a distance of less than 20 mm from the geometrical center and with a cylindrical value of less than 0.42 diopter.
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公开(公告)号：FR2769997A1
公开(公告)日：1999-04-23
申请号：FR9712987
申请日：1997-10-16
Applicant: ESSILOR INT
Inventor： PEDRONO CLAUDE , HARSIGNY CHRISTIAN , FAUQUIER CATHERINE , JURKIEWIEZ FANNY , ROLAND ERIC
Abstract: The lens has an aspherical surface with a geometrical center, a reference point for near vision, and a virtually umbilical and vertical meridian line with a mean spherical and cylindrical value at each point. The area formed by points at a distance of less than 20 mm from the geometrical center and with a cylindrical value of between 0.42 and 0.84 diopter is greater than the area formed by points at a distance of less than 20 mm from the geometrical center and with a cylindrical value of less than 0.42 diopter.
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公开(公告)号：DE4342234C2
公开(公告)日：1998-07-02
申请号：DE4342234
申请日：1993-12-10
Applicant: ESSILOR INT
Inventor： HARSIGNY CHRISTIAN , MIEGE CHRISTIAN , CHAUVEAU JEAN-PIERRE , AHSBAHS FRANCOISE
Abstract: A progressive multifocal ophthalmic lens is provided having an aspherical surface comprising a distance vision portion, a near vision portion and an intermediate vision portion, in which the maximum mean sphere gradient value is situated in the intermediate vision portion of the principal meridian of progression of the lens, and the cylinder gradient over the whole aspherical surface of the lens is less than the product obtained by multiplying the power addition value at each point by a constant value coefficient.
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公开(公告)号：IT1266442B1
公开(公告)日：1996-12-30
申请号：ITRM930802
申请日：1993-12-03
Applicant: ESSILOR INT
Inventor： HARSIGNY CHRISTIAN , MIEGE CHRISTIAN , CHAUVEAU JEAN-PIERRE , AHSBAHS FRANCOISE
Abstract: A progressive multifocal ophthalmic lens is provided having an aspherical surface comprising a distance vision portion, a near vision portion and an intermediate vision portion, in which the maximum mean sphere gradient value is situated in the intermediate vision portion of the principal meridian of progression of the lens, and the cylinder gradient over the whole aspherical surface of the lens is less than the product obtained by multiplying the power addition value at each point by a constant value coefficient.
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公开(公告)号：GB2273369B
公开(公告)日：1996-06-19
申请号：GB9324531
申请日：1993-11-30
Applicant: ESSILOR INT
Inventor： HARSIGNY CHRISTIAN , MIEGE CHRISTIAN , CHAUVEAU JEAN-PIERRE , AHSBAHS FRANCOISE
Abstract: A progressive multifocal ophthalmic lens is provided having an aspherical surface comprising a distance vision portion, a near vision portion and an intermediate vision portion, in which the maximum mean sphere gradient value is situated in the intermediate vision portion of the principal meridian of progression of the lens, and the cylinder gradient over the whole aspherical surface of the lens is less than the product obtained by multiplying the power addition value at each point by a constant value coefficient.
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Patent Agency Ranking
公开(公告)号：DE69105806T2
公开(公告)日：1995-04-20
申请号：DE69105806
申请日：1991-04-22
Applicant: ESSILOR INT
Inventor： CHAUVEAU JEAN-PIERRE , DEFORGES JEAN-PAUL , HARSIGNY CHRISTIAN
Abstract: This relates to a progressive ophthalmic lens whose front face (11A) for example comprises, continuously, on the one hand, a central zone (14) which, having a progressively variable curvature along at least a portion of at least one meridian, is the optically useful zone of it and, on the other hand, surrounding this central zone (14), a peripheral connection zone (15) connecting the central zone tangentially. … According to the invention, the optically useful central zone (14) of this front face (11A) is delimited by a closed curve which, in projection onto a plane perpendicular to the geometrical axis of the assembly, has everywhere an oval shape and the radius of curvature of the radial section of its peripheral connection zone (15) varies circumferentially in value and/or in sign, such that around its peripheral edge (13) the lens is of equal thickness everywhere. … Application for obtaining progressive ophthalmic lenses which are easier to produce, more aesthetic and lighter. … …
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公开(公告)号：GB2273369A
公开(公告)日：1994-06-15
申请号：GB9324531
申请日：1993-11-30
Applicant: ESSILOR INT
Inventor： HARSIGNY CHRISTIAN , MIEGE CHRISTIAN , CHAUVEAU JEAN-PIERRE , AHSBAHS FRANCOISE
Abstract: A progressive multifocal ophthalmic lens is provided having an aspherical surface comprising a distance vision portion, a near vision portion and an intermediate vision portion, in which the maximum mean sphere gradient value is situated in the intermediate vision portion of the principal meridian of progression of the lens, and the cylinder gradient over the whole aspherical surface of the lens is less than the product obtained by multiplying the power addition value at each point by a constant value coefficient, which preferably has a value .
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公开(公告)号：ITRM930802D0
公开(公告)日：1993-12-03
申请号：ITRM930802
申请日：1993-12-03
Applicant: ESSILOR INT
Inventor： HARSIGNY CHRISTIAN , MIEGE CHRISTIAN , CHAUVEAU JEAN-PIERRE , AHSBAHS FRANCOISE
Abstract: A progressive multifocal ophthalmic lens is provided having an aspherical surface comprising a distance vision portion, a near vision portion and an intermediate vision portion, in which the maximum mean sphere gradient value is situated in the intermediate vision portion of the principal meridian of progression of the lens, and the cylinder gradient over the whole aspherical surface of the lens is less than the product obtained by multiplying the power addition value at each point by a constant value coefficient.
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公开(公告)号：AU7530191A
公开(公告)日：1991-11-07
申请号：AU7530191
申请日：1991-04-24
Applicant: ESSILOR INT
Inventor： CHAUVEAU JEAN-PIERRE , DEFORGES JEAN-PAUL , HARSIGNY CHRISTIAN
Abstract: This relates to a progressive ophthalmic lens whose front face (11A) for example comprises, continuously, on the one hand, a central zone (14) which, having a progressively variable curvature along at least a portion of at least one meridian, is the optically useful zone of it and, on the other hand, surrounding this central zone (14), a peripheral connection zone (15) connecting the central zone tangentially. … According to the invention, the optically useful central zone (14) of this front face (11A) is delimited by a closed curve which, in projection onto a plane perpendicular to the geometrical axis of the assembly, has everywhere an oval shape and the radius of curvature of the radial section of its peripheral connection zone (15) varies circumferentially in value and/or in sign, such that around its peripheral edge (13) the lens is of equal thickness everywhere. … Application for obtaining progressive ophthalmic lenses which are easier to produce, more aesthetic and lighter. … …
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公开(公告)号：FR2638246B1
公开(公告)日：1991-01-25
申请号：FR8813772
申请日：1988-10-20
Applicant: ESSILOR INT
Inventor： CORNU DANIEL , HARSIGNY CHRISTIAN , THIEBAUT JEAN
Abstract: A positive power ophthalmic lens has a central optically active area the diameter of which is at most equal to the diameter of its geometrical contour. It has an optional peripheral merging area around the central optically active area, between the latter and the geometrical contour. The diameter D1 in millimeters of the central optically active area is related to the power P of the lens in diopters by a general equation of the type: D1=a-b.p where a is a numerical parameter taking a value between 84 and 89 and b is a numerical parameter taking a value between 4 and 4.9. This equation makes it possible to obtain well corrected positive power ophthalmic lenses with a large diameter that are relatively light in weight.
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