-
公开(公告)号：DE19538470C2
公开(公告)日：2001-09-20
申请号：DE19538470
申请日：1995-10-16
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.
-
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.
-
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.
-
公开(公告)号：ES2112182A1
公开(公告)日：1998-03-16
申请号：ES9502060
申请日：1995-10-24
Applicant: ESSILOR INT
Inventor： AHSBAHS FRANCOISE , PEDRONO CLAUDE
Abstract: LENTE OFTALMICA MULTIFOCAL PROGRESIVA. LA LENTE MULTIFOCAL PROGRESIVA DE LA INVENCION COMPRENDE UNA SUPERFICIE ESFERICA (S), CON UNA ZONA DE VISION DE LEJOS (VL), UNA ZONA DE VISION DE CERCA (VP), UNA ZONA DE VISION INTERMEDIA (VI), UNA MERIDIANA PRINCIPAL DE PROGRESION (MM''); TIENE UNA ADICION DE POTENCIA A IGUAL A LA VARIACION DE ESFERA MEDIA ENTRE UN PUNTO (L) DE LA ZONA DE VISION DE LEJOS (VL) Y UN PUNTO (P) DE LA ZONA DE VISION DE CERCA (VP), Y UNA BASE B O VALOR DE ESFERA MEDIA EN DICHO PUNTO (P). LA ANCHURA DE LA ZONA DE VISION DE CERCA (VP) VARIA NO SOLO EN FUNCION DE LA ADICION DE POTENCIA A, SINO TAMBIEN EN FUNCION DEL VALOR DE LA BASE B, A FIN DE ASEGURAR UN CAMPO OBJETO SENSIBLEMENTE CONSTANTE PARA TODOS LOS VALORES DE ADICION Y DE BASE.
-
公开(公告)号：ITRM950702A1
公开(公告)日：1997-04-25
申请号：ITRM950702
申请日：1995-10-25
Applicant: ESSILOR INT
Inventor： AHSBAHS FRANCOISE , PEDRONO CLAUDE
IPC: G02C7/06 , G02C20060101 , G02C7/02
-
Patent Agency Ranking
公开(公告)号：IE950799A1
公开(公告)日：1996-05-01
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 comprising 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 on said distance vision portion and a near vision control point on said near vision portion, and a base B defined as the 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.
-
公开(公告)号：AU650407B2
公开(公告)日：1994-06-16
申请号：AU2829592
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. 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.
-
公开(公告)号：ITTO920919A1
公开(公告)日：1994-05-10
申请号：ITTO920919
申请日：1992-11-10
Applicant: ESSILOR INT
Inventor： PEDRONO CLAUDE
IPC: G02C7/06 , G02C20060101 , G02C7/02
-
公开(公告)号：BR9204390A
公开(公告)日：1993-05-18
申请号：BR9204390
申请日：1992-11-12
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.
-
公开(公告)号：CA2780688A1
公开(公告)日：2011-05-26
申请号：CA2780688
申请日：2010-11-18
Applicant: ESSILOR INT
Inventor： MOUSSET SOAZIC , PETIGNAUD CECILE , PEDRONO CLAUDE , LADOUS AGNES , AMIR BRUNO , CONTET AUDE
Abstract: A method of determining binocular performance of a pair of spectacle lenses comprises: a eyes characteristics providing step, a pair of spectacle lenses providing step, a environment providing step, a binocular performance criteria selecting step, and a binocular performance criteria determining step, wherein the at least one binocular performance criterion is selected among one or a combination of the following criteria groups consisting of central vision criteria group and/or peripheral vision criteria group.
-
-
-
-
-
-
-
-
-
Search Results
92
records
(took 0.056 seconds)
