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公开(公告)号：AU741951B2
公开(公告)日：2001-12-13
申请号：AU8934598
申请日：1998-10-15
Applicant: ESSILOR INT
Inventor： BAUDART THIERRY , AHSBAHS FRANCOISE , MIEGE CHRISTIAN
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公开(公告)号：BR0002033A
公开(公告)日：2001-03-20
申请号：BR0002033
申请日：2000-01-20
Applicant: ESSILOR INT
Inventor： FRANCOIS SANDRINE , AHSBAHS FRANCOISE
Abstract: The lens has a mean sphere and a cylinder at each of points of an aspherical surface of the lens. A main progression meridian passes through far, near and intermediate vision regions. Differences between maximum cylinder values over a distance of 20 mm at both sides of the meridian have an absolute value less than or equal to 0.30 diopters. An absolute value of difference between maximum and minimum values of cylinder at each side of the meridian is less than or equal to the product of power addition and a constant having a value of 0.10. The power addition is defined as a difference in the mean sphere between a reference point (VP) of the near vision region and a reference point (VL) of the far vision region, and is greater than or equal to 2.50 diopters.
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公开(公告)号：IE81058B1
公开(公告)日：1999-12-29
申请号：IE950799
申请日：1995-10-13
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：AU8934598A
公开(公告)日：1999-05-06
申请号：AU8934598
申请日：1998-10-15
Applicant: ESSILOR INT
Inventor： BAUDART THIERRY , MIEGE CHRISTIAN , AHSBAHS FRANCOISE
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公开(公告)号：GB2294553B
公开(公告)日：1998-04-29
申请号：GB9522051
申请日：1995-10-27
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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Patent Agency Ranking
公开(公告)号：FR2733328B1
公开(公告)日：1997-06-13
申请号：FR9504800
申请日：1995-04-21
Applicant: ESSILOR INT
Inventor： AHSBAHS FRANCOISE , BAUDART THIERRY , LE SAUX GILLES
Abstract: The lens has an aspherical surface (S) with a distant vision zone (VL), a close vision zone (VP) and an intermediate vision zone (VI), with a main progression meridian (MM') passing through the three zones. The three vision zones (VL, VP, VI) are separated by isocylindrical lines, and the distant vision zone has a sector angle of at least 145 degrees. A line bisecting the angle forms an angle of less than 5 degrees, and pref under 2 degrees with a vertical.
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公开(公告)号：FR2726374B1
公开(公告)日：1996-12-27
申请号：FR9412978
申请日：1994-10-28
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：AU3446395A
公开(公告)日：1996-05-09
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：FR2726374A1
公开(公告)日：1996-05-03
申请号：FR9412978
申请日：1994-10-28
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：DE19538470A1
公开(公告)日：1996-05-02
申请号：DE19538470
申请日：1995-10-16
Applicant: ESSILOR INT
Inventor： AHSBAHS FRANCOISE , PEDRONO CLAUDE
Abstract: A progressive multifocal ophthalmic lens comprises an aspherical surface having a mean sphere and a cylinder at every point thereof, said surface comprising a distance vision portion and a near vision portion, the lens having a power addition value A defined as the variation in mean sphere between a distance vision control point L on said distance vision portion and a near vision control point P on said near vision portion, and a base B defined as a value of mean sphere at said distance vision control point, in which the width of said near vision portion varies not only as a function of said power addition value A, but also as a function of the value B of said base thereby ensuring the presence of a substantially constant object field for all values of said power addition and said base.
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