-
公开(公告)号：JPH11194309A
公开(公告)日：1999-07-21
申请号：JP29541798
申请日：1998-10-16
Applicant: ESSILOR INT
Inventor： BAUDARD THIERRY , AHSBAHS FRANCOISE , MIEGE CHRISTIAN
Abstract: PROBLEM TO BE SOLVED: To provide a multifocus eye lens, which secures improved peripheral view while satisfactory center visibility is maintained and to which a wearing person in easily corresponds, by distributing an equal spherical value line and an equal cylinder value line. SOLUTION: The main length of a progression shows a position along a meridian 2 equivalent to the change of an average spherical value, which is actually equal to a magnification increase. A spherical value is substantially held constant at a far sight area above a point L. Then, the spherical value substantially is held constant in a nearsight area near a point P. Namely, the main length of the progression is shorter than 16 mm and the maximum value |dS/dθ|max of the coefficient of the sine function of the average spherical value in a circle whose diameter is 40 mm, which is center-adjusted with the geometric center of the lens, is smaller than 1/4 of the maximum value Pmer of the inclination of the average spherical value along the meridian 2. That is |dS/dθ|max /Pmer
-
公开(公告)号：AU665282B2
公开(公告)日：1995-12-21
申请号：AU5184693
申请日：1993-11-22
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.
-
公开(公告)号：ES2077528A2
公开(公告)日：1995-11-16
申请号：ES9302566
申请日：1993-12-10
Applicant: ESSILOR INT
Inventor： HARSIGNY CHRISTIAN , CHAUVEAU JEAN-PIERRE , AHSBAHS FRANCOISE , MIEGE CHRISTIAN
Abstract: SE PROPORCIONA UNA LENTE OFTALMICA MULTIFOCAL PROGRESIVA QUE TIENE UNA SUPERFICIE ASFERICA QUE COMPRENDE UNA PORCION DE VISION DISTANTE, UNA PORCION DE VISION PROXIMA Y UNA PORCION DE VISION INTERMEDIA, EN LA CUAL EL VALOR MAXIMO DE LA PENDIENTE DE ESFERA MEDIA ESTA SITUADO EN LA PORCION DE VISION INTERMEDIA DE LA MERIDIANA PRINCIPAL DE PROGRESION DE LA LENTE, Y LA PENDIENTE DE CILINDRO SOBRE LA TOTALIDAD DE LA SUPERFICIE ESFERICA DE LA LENTE ES INFERIOR AL PRODUCTO OBTENIDO MULTIPLICANDO EL VALOR DE ADICION DE POTENCIA EN CADA PUNTO POR UN COEFICIENTE DE VALOR CONSTANTE.
-
公开(公告)号：GB2277997A
公开(公告)日：1994-11-16
申请号：GB9406312
申请日：1994-03-30
Applicant: ESSILOR INT
Inventor： ASHBAHS FRANCOISE , 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, a near vision portion, an intermediate vision portion, 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 than the far vision portion of the lens dedicated to near vision, and the lens dedicated to far vision having a less extensive near vision portion than the near vision portion of the lens dedicated to near vision.
-
公开(公告)号：CA2110926A1
公开(公告)日：1994-06-12
申请号：CA2110926
申请日：1993-12-08
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.
-
Patent Agency Ranking
公开(公告)号：DE69003550T2
公开(公告)日：1994-03-10
申请号：DE69003550
申请日：1990-01-29
Applicant: ESSILOR INT
Inventor： MIEGE CHRISTIAN , MONTEIL PIERRE , OBRECHT GERARD
-
公开(公告)号：CA2250568C
公开(公告)日：2007-06-26
申请号：CA2250568
申请日：1998-10-15
Applicant: ESSILOR INT
Inventor： MIEGE CHRISTIAN , AHSBAHS FRANCOISE , BAUDART THIERRY
Abstract: 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.
-
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
-
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
-
公开(公告)号：ES2100798B1
公开(公告)日：1998-02-16
申请号：ES9400860
申请日：1994-04-22
Applicant: ESSILOR INT
Inventor： ASHBAHS FRANCOISE , BOURDONCLE BERNARD , DELDALLE BENEDCTE , MIEGE CHRISTIAN
Abstract: In a pair of progressive multifocal ophthalmic lenses, in which each lens has an aspherical surface comprising a far vision portion, a near vision portion, an intermediate vision portion, 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 than the far vision portion of the lens dedicated to near vision, and the lens dedicated to far vision having a less extensive near vision portion than the near vision portion of the lens dedicated to near vision.
-
-
-
-
-
-
-
-
-
Search Results
37
records
(took 0.02 seconds)
