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公开(公告)号：FR2770000B1
公开(公告)日：1999-12-31
申请号：FR9712990
申请日：1997-10-16
Applicant: ESSILOR INT
Inventor： BAUDART THIERRY , AHSBAHS FRANCOISE , MIEGE CHRISTIAN
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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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公开(公告)号：DE4414106A1
公开(公告)日：1994-10-27
申请号：DE4414106
申请日：1994-04-22
Applicant: ESSILOR INT
Inventor： ASHBAHS FRANCOIS , BOURDONCLE BERNARD , DELDALLE BENEDICTE , MIEGE CHRISTIAN
Abstract: In a pair of progressive multifocal ophthalmic lenses, in which each lens has an aspherical surface comprising a far vision portion VLP, VLL a near vision portion VPP, VPL, an intermediate vision portion VIP, and a prime meridian of power progression passing through these three portions, the prime meridians of progression of the lenses are substantially symmetrical with respect to each other, and one of the lenses is more particularly dedicated to far vision and the other is more particularly dedicated to near vision, the lens dedicated to far vision having a more extensive far vision portion VLL than the far vision portion VLP of the lens dedicated to near vision, and the lens dedicated to far vision having a less extensive near vision portion VPL than the near vision portion VPP of the lens dedicated to near vision.
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Patent Agency Ranking
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：DE69801629D1
公开(公告)日：2001-10-18
申请号：DE69801629
申请日：1998-10-13
Applicant: ESSILOR INT
Inventor： BAUDARD THIERRY , AHSBAHS FRANCOISE , MIEGE CHRISTIAN
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公开(公告)号：CA2250568A1
公开(公告)日：1999-04-16
申请号：CA2250568
申请日：1998-10-15
Applicant: ESSILOR INT
Inventor： MIEGE CHRISTIAN , BAUDART THIERRY , AHSBAHS FRANCOISE
Abstract: 19 In a multifocal ophthalmic lens comprising an aspherical surface having at every point thereon a mean sphere and a cylinder, a far vision region, a near vision region, and an intermediate vision region, the length of progression i.e. the length over which lens power varies by a set amount in different regions of the lens, is short. To avoid distortion at the periphery of the lens which this would otherwise occasion, the isosphere and isocylinder lines are distributed over the surface of the lens so as to ensure variations in sphere are not too sudden along a 20 mm radius circle centered on the geometric center of the lens and variations in cylinder on the surface of the lens inside this circle are also very small. The lens has an enlarged near vision region and progression is less perceptible to the wearer.
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公开(公告)号：ES2077528B1
公开(公告)日：1997-07-01
申请号：ES9302566
申请日：1993-12-10
Applicant: ESSILOR INT
Inventor： HARSIGNY CHRISTIAN , CHAUVEAU JEAN-PIERRE , AHSBAHS FRANCOISE , MIEGE CHRISTIAN
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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