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公开(公告)号：FR2769998B1
公开(公告)日：1999-12-31
申请号：FR9712988
申请日：1997-10-16
Applicant: ESSILOR INT
Inventor： LE SAUX GILLES , PEDRONO CLAUDE , ROSSIER CLAIRE
Abstract: The lens has an aspherical surface (S) presenting at any point a mean sphere and cylinder, having a distance vision zone (VL), a near vision zone (VP), an intermediate vision zone (VI) and a main meridian of progression (MM') passing through all three zones. The relationship between a maximum cylinder within a circle of 20 mm radius centered on the geometrical center of the lens and the distance from the center to a point inside the circle or maximum cylinder is less than or equal to half the maximum inclination of the mean sphere on the main meridian of progression.
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公开(公告)号：AU8934698A
公开(公告)日：1999-05-06
申请号：AU8934698
申请日：1998-10-15
Applicant: ESSILOR INT
Inventor： SAUX GILLES LE , ROSSIER CLAIRE , PEDRONO CLAUDE
Abstract: The lens has an aspherical surface (S) presenting at any point a mean sphere and cylinder, having a distance vision zone (VL), a near vision zone (VP), an intermediate vision zone (VI) and a main meridian of progression (MM') passing through all three zones. The relationship between a maximum cylinder within a circle of 20 mm radius centered on the geometrical center of the lens and the distance from the center to a point inside the circle or maximum cylinder is less than or equal to half the maximum inclination of the mean sphere on the main meridian of progression.
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公开(公告)号：CA2250571A1
公开(公告)日：1999-04-16
申请号：CA2250571
申请日：1998-10-15
Applicant: ESSILOR INT
Inventor： ROSSIER CLAIRE , LE SAUX GILLES , PEDRONO CLAUDE
Abstract: 18 A multifocal ophthalmic lens comprising a far vision region, a near vision region and an intermediate vision region is provided having a high near vision region and a wide vision field in the near vision region, the intermediate vision region and in the far vision region. Progression is gentle although the distance between a mounting center on the lens and the point where power addition is 85% higher than power addition at a far vision control point is less than 16 mm, while simultaneously maximum cylinder inside a 20 mm radius circle centered on a geometrical center of the lens is kept at a low value.
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公开(公告)号：AU697240B2
公开(公告)日：1998-10-01
申请号：AU3446395
申请日：1995-10-25
Applicant: ESSILOR INT
Inventor： AHSBAHS FRANCOISE , PEDRONO CLAUDE
Abstract: A progressive multifocal ophthalmic lens is provided having an aspherical surface with a mean sphere and a cylinder at every point. The aspherical surface has a distance vision portion, with a control point for distance vision, a near vision portion with a control point for near vision, and an intermediate vision portion between the near vision portion and the distance vision portion. A power addition value A is defined as a variation in mean sphere between the control point for distance vision and the control point for near vision portion. A base B is defined as a value of mean sphere at the control point for distance vision. A width of the near vision portion varies not only as a function of the power addition value A, but also as a function of the value B of the base. The invention thereby ensures the presence of a substantially constant object field for all values of the power addition and of the base.
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公开(公告)号：AU4212197A
公开(公告)日：1998-04-14
申请号：AU4212197
申请日：1997-09-09
Applicant: ESSILOR INT
Inventor： BAUDART THIERRY , BOURDONCLE BERNARD , LALOUX THIERRY , PEDRONO CLAUDE , ROSSIER CLAIRE
Abstract: The invention concerns a set of progressive multifocal opthalmic lenses, each having a first progressive multifocal surface and a second surface preferably spherical. It proposes to define the set of lenses with regard to the optical characteristics of the lenses, and particularly wearer power and oblique astigmatism, in worn conditions. For this purpose, the invention defines an ergorama associating with each sight direction in worn conditions a target object point, and a given power. This ergorama supplies a power target for a definition by optimisation of the lenses, and is used in a radii plotting programme for calculating the optical characteristics during optimisation. The set of lenses has substantially identical optical performances for a given addition, whatever the power of the far vision reference point.
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Patent Agency Ranking
公开(公告)号：IT1276579B1
公开(公告)日：1997-11-03
申请号：ITRM950702
申请日：1995-10-25
Applicant: ESSILOR INT
Inventor： AHSBAHS FRANCOISE , PEDRONO CLAUDE
Abstract: A progressive multifocal ophthalmic lens is provided having an aspherical surface with a mean sphere and a cylinder at every point. The aspherical surface has a distance vision portion, with a control point for distance vision, a near vision portion with a control point for near vision, and an intermediate vision portion between the near vision portion and the distance vision portion. A power addition value A is defined as a variation in mean sphere between the control point for distance vision and the control point for near vision portion. A base B is defined as a value of mean sphere at the control point for distance vision. A width of the near vision portion varies not only as a function of the power addition value A, but also as a function of the value B of the base. The invention thereby ensures the presence of a substantially constant object field for all values of the power addition and of the base.
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公开(公告)号：GB2261526B
公开(公告)日：1995-05-31
申请号：GB9222491
申请日：1992-10-26
Applicant: ESSILOR INT
Inventor： PEDRONO CLAUDE
Abstract: The lens has an aspherical surface having a zone for far vision, a zone for near vision, and between these two zones, a zone for intermediate vision, with a meridian curve along which the curvature of the surface varies progressively and which is inclined from top to bottom towards the nose side of the lens, at least in the intermediate zone. The portion of the meridian curve situated in the intermediate and near zones includes a segment at an angle alpha to the vertical where the value of alpha is an increasing function of the power addition A of the lens. In a horizontal and vertical system of coordinates, a point of the segment has an ordinate whose value is also an increasing function of the power addition A. At said point, the mean sphere value of the surface corresponds to a power addition lying in the range 0.8 to 0.92 times the nominal power addition of the lens.
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公开(公告)号：AU650408B2
公开(公告)日：1994-06-16
申请号：AU2829692
申请日：1992-11-11
Applicant: ESSILOR INT
Inventor： PEDRONO CLAUDE
Abstract: The lens has an aspherical surface having a zone for far vision, a zone for near vision, and between these two zones, a zone for intermediate vision, with a meridian curve along which the curvature of the surface varies progressively and which is inclined from top to bottom towards the nose side of the lens, at least in the intermediate zone. A portion of the meridian curve situated in the intermediate and near zones is divided into a first segment at an angle alpha to the vertical where the value of alpha is an increasing function of the power addition A of the lens, and a second segment at an angle omega to the vertical where omega is smaller than alpha . At the point where the two segments meet, the mean sphere value of the surface corresponds to a power addition lying in the range 0.8 to 0.92 times the nominal power addition of the lens.
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公开(公告)号：ITTO920918A1
公开(公告)日：1994-05-10
申请号：ITTO920918
申请日：1992-11-10
Applicant: ESSILOR INT
Inventor： PEDRONO CLAUDE
IPC: G02C7/06 , G02C20060101 , G02C7/02
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公开(公告)号：CA2082620A1
公开(公告)日：1993-05-13
申请号：CA2082620
申请日：1992-11-10
Applicant: ESSILOR INT
Inventor： PEDRONO CLAUDE
Abstract: The lens has an aspherical surface having a zone for far vision, a zone for near vision, and between these two zones, a zone for intermediate vision, with a meridian curve along which the curvature of the surface varies progressively and which is inclined from top to bottom towards the nose side of the lens, at least in the intermediate zone. The portion of the meridian curve situated in the intermediate and near zones includes a segment at an angle alpha to the vertical where the value of alpha is an increasing function of the power addition A of the lens. In a horizontal and vertical system of coordinates, a point of the segment has an ordinate whose value is also an increasing function of the power addition A. At said point, the mean sphere value of the surface corresponds to a power addition lying in the range 0.8 to 0.92 times the nominal power addition of the lens.
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