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ES2012535A6 - Lentilla oftalmica multifocal. - Google Patents

Lentilla oftalmica multifocal.

Info

Publication number
ES2012535A6
ES2012535A6 ES8802439A ES8802439A ES2012535A6 ES 2012535 A6 ES2012535 A6 ES 2012535A6 ES 8802439 A ES8802439 A ES 8802439A ES 8802439 A ES8802439 A ES 8802439A ES 2012535 A6 ES2012535 A6 ES 2012535A6
Authority
ES
Spain
Prior art keywords
point
meridian curve
varifocal
vision zone
ophthalmic lens
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
ES8802439A
Other languages
English (en)
Inventor
Maurice Dufour
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EssilorLuxottica SA
Original Assignee
Essilor International Compagnie Generale dOptique SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Essilor International Compagnie Generale dOptique SA filed Critical Essilor International Compagnie Generale dOptique SA
Priority to ES8802439A priority Critical patent/ES2012535A6/es
Publication of ES2012535A6 publication Critical patent/ES2012535A6/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Eyeglasses (AREA)

Abstract

EN ESTA LENTILLA, LA CURVATURA DE LA CURVA MERIDIANA PRINCIPAL (MP) COMIENZA A VARIAR A PARTIR DE UN PUNTO (A3) SITUADO EN LA ZONA DE VISION INTERMEDIA (VI) A UNA DISTANCIA PREDETERMINADA D1 DEL PUNTO (AL) DE LA CURVA MERIDIANA (MP) SITUADO EN EL LIMITE INFERIOR DE LA ZONA DE VISION DE LEJOS (VL) Y CONTINUA VARIANDO UN PUNTO (A4) SITUADO EN LA LINEA DE VISION DE CERCA (VP) EN UNA PROLONGACION (MP'') DE LA CURVA MERIDIANA (MP) A UNA DISTANCIA PREDETERMINADA D2 DEL PUNTO (A2) DE LA CURVA MERIDIANA (MP), SITUADO EN EL LIMITE SUPERIOR DE LA ZONA DE VISION DE CERCA (VP), TENIENDO LA DIFERENCIA DE CURVATURA ENTRE LOS PUNTOS (A2 Y A4) UN VALOR PREDETERMINADO QC. LOS VALORES D1, D2 Y QC SON FUNCIONES DECRECIENTES DE LA SUMA DE POTENCIA A ENTRE LOS PUNTOS (A1 Y A2).
ES8802439A 1988-07-07 1988-07-07 Lentilla oftalmica multifocal. Expired - Lifetime ES2012535A6 (es)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES8802439A ES2012535A6 (es) 1988-07-07 1988-07-07 Lentilla oftalmica multifocal.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES8802439A ES2012535A6 (es) 1988-07-07 1988-07-07 Lentilla oftalmica multifocal.

Publications (1)

Publication Number Publication Date
ES2012535A6 true ES2012535A6 (es) 1990-04-01

Family

ID=8257607

Family Applications (1)

Application Number Title Priority Date Filing Date
ES8802439A Expired - Lifetime ES2012535A6 (es) 1988-07-07 1988-07-07 Lentilla oftalmica multifocal.

Country Status (1)

Country Link
ES (1) ES2012535A6 (es)

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Legal Events

Date Code Title Description
SA6 Expiration date (snapshot 920101)

Free format text: 2008-07-07