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公开(公告)号:ES2100798A1
公开(公告)日:1997-06-16
申请号:ES9400860
申请日:1994-04-22
Applicant: ESSILOR INT
Inventor: ASHBAHS FRANCOISE , BOURDONCLE BERNARD , DELDALLE BENEDCTE , MIEGE CHRISTIAN
Abstract: PAR DE LENTAS OFTALMICAS MULTIFOCALES PROGESIVAS EN EL QUE CADA UNA DE LAS LENTES INCLUYE UNA SUPERFICIE ESFERICA QUE COMPRENDE UNA ZONA DE VISION LEJANA (VLL, VLP), UNA ZONA DE VISION PROXIMA (VLL, VLP), UNA ZONA DE VISION INTERMEDIA, UNA MERIDIANA PRINCIPAL DE PROGRESION QUE ATRAVIESA DICHAS ZONAS. LAS MERIDIANAS PRINCIPALES DE PROGRESION DE DICHAS LENTES SON SIMETRICAS, Y UNA DE DICHAS LENTES ESTA MAS PARTICULARMENTE DEDICADA A LA VISION LEJANA, MIENTRAS QUE LA OTRA ESTA DEDICADA MAS PARTICULARMENTE A LA VISION PROXIMA; LA LENTE DEDICADA A LA VISION LEJANA PRESENTA UNA ZONA DE VISION LEJANA (VLL) MAS EXTENSA QUE LA (VLP) DE LA LENTE DEDICADA A LA VISION PROXIMA, Y LA LENTE DEDICADA A LA VISION LEJANA PRESENTA UNA ZONA DE VISION PROXIMA (VLL) MENOS EXTENSA QUE LA (VLP) DE LA LENTE DEDICADA A LA VISION PROXIMA.
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公开(公告)号:CA2008047C
公开(公告)日:1997-04-22
申请号:CA2008047
申请日:1990-01-18
Applicant: ESSILOR INT
Inventor: MIEGE CHRISTIAN , MONTEIL PIERRE , OBRECHT GERARD
Abstract: Cette lentille optique est caractérisée en ce que la courbe représentative de sa proximité P, définie comme étant égale à l'inverse de la distance D à laquelle un rayon lumineux parallèle à son axe et de hauteur h par rapport à celui-ci recoupe cet axe, s'inscrit dans une zone comprise entre une courbe enveloppe inférieure (Pinf) et une courbe enveloppe supérieure (Psup) répondant aux équations suivantes : Pinf = f(h) = ( .SIGMA. A'i hi ) + PVL Psup = f(h) = ( .SIGMA. A"i hi ) + PVL dans lesquelles PVL est la proximité en vision de loin et A'i, A"i des coefficients numériques dépendant de l'addition de proximité ajoutée en vision de près à la proximité en vision de loin. Application à la réalisation de lentilles de contact, d'implants intra-oculaires, ou de lentilles intra-cornéennes pour presbytes.
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公开(公告)号:ITRM930802A1
公开(公告)日:1995-06-03
申请号:ITRM930802
申请日:1993-12-03
Applicant: ESSILOR INT
Inventor: AHSBAHS FRANCOISE , CHAUVEAU JEAN-PIERRE , HARSIGNY CHRISTIAN , MIEGE CHRISTIAN
IPC: G02C7/06 , G02C20060101 , G02C7/02
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公开(公告)号:FR2699294B1
公开(公告)日:1995-02-10
申请号:FR9214929
申请日:1992-12-11
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:AU5184693A
公开(公告)日:1994-06-23
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.
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公开(公告)号:DE4342234A1
公开(公告)日:1994-06-16
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:FR2642854B1
公开(公告)日:1991-05-03
申请号:FR8901417
申请日:1989-02-03
Applicant: ESSILOR INT
Inventor: MIEGE CHRISTIAN , MONTEIL PIERRE , OBRECHT GERARD
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