FR2444955A1 - OPHTHALMIC OPTICAL SYSTEM METHOD FOR MEASURING ITS REFRACTION AND MOUNTING FOR THIS SYSTEM - Google Patents

OPHTHALMIC OPTICAL SYSTEM METHOD FOR MEASURING ITS REFRACTION AND MOUNTING FOR THIS SYSTEM

Info

Publication number
FR2444955A1
FR2444955A1 FR7922786A FR7922786A FR2444955A1 FR 2444955 A1 FR2444955 A1 FR 2444955A1 FR 7922786 A FR7922786 A FR 7922786A FR 7922786 A FR7922786 A FR 7922786A FR 2444955 A1 FR2444955 A1 FR 2444955A1
Authority
FR
France
Prior art keywords
optical system
annular elements
optical lens
ophthalmic optical
refraction
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.)
Granted
Application number
FR7922786A
Other languages
French (fr)
Other versions
FR2444955B1 (en
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.)
LE I TOCHNOI
Original Assignee
LE I TOCHNOI
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 LE I TOCHNOI filed Critical LE I TOCHNOI
Publication of FR2444955A1 publication Critical patent/FR2444955A1/en
Application granted granted Critical
Publication of FR2444955B1 publication Critical patent/FR2444955B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive
    • G02C7/061—Spectacle lenses with progressively varying focal power
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C2202/00—Generic optical aspects applicable to one or more of the subgroups of G02C7/00
    • G02C2202/16—Laminated or compound lenses

Abstract

Le système optique ophtalmique à variation continue de la puissance focale dans le plan méridien comporte une lentille optique 1 avec une surface réfringente avant 2 sphérique, et une surface réfringente arrière 3 définie par une équation du second ordre. La surface avant 2 est disposée par rapport à la surface arrière 3 de telle façon, que l'epaisseur de la lentille optique 1 diminue de sa bordure inférieure à sa bordure supérieure. La monture pour ce système optique ophtalmique comprend des éléments annulaires, composes d'au moins deux segments dont l'un est destiné à la fixation de la bordure mince de la lentille optique Les branches de lunettes sont attachées aux éléments annulaires. Le pontet 24 disposé entre les éléments annulaires est courbé dans le sens opposé à la direction dans laquelle s'étendent les branches et placé compte tenu de la valeur nécessaire de l'angle de face O.The ophthalmic optical system with continuously variable focal power in the meridian plane comprises an optical lens 1 with a spherical front refractive surface 2, and a rear refractive surface 3 defined by a second order equation. The front surface 2 is disposed relative to the rear surface 3 such that the thickness of the optical lens 1 decreases from its lower edge to its upper edge. The frame for this ophthalmic optical system comprises annular elements, composed of at least two segments, one of which is intended for the fixing of the thin rim of the optical lens. The spectacle arms are attached to the annular elements. The bridge 24 disposed between the annular elements is curved in the direction opposite to the direction in which the branches extend and placed taking into account the necessary value of the face angle O.

FR7922786A 1978-12-20 1979-09-12 OPHTHALMIC OPTICAL SYSTEM METHOD FOR MEASURING ITS REFRACTION AND MOUNTING FOR THIS SYSTEM Granted FR2444955A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SU2693978 1978-12-20
SU2693979 1978-12-20

Publications (2)

Publication Number Publication Date
FR2444955A1 true FR2444955A1 (en) 1980-07-18
FR2444955B1 FR2444955B1 (en) 1982-05-21

Family

ID=26665715

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7922786A Granted FR2444955A1 (en) 1978-12-20 1979-09-12 OPHTHALMIC OPTICAL SYSTEM METHOD FOR MEASURING ITS REFRACTION AND MOUNTING FOR THIS SYSTEM

Country Status (5)

Country Link
DD (1) DD146214A1 (en)
DE (1) DE2937743A1 (en)
FR (1) FR2444955A1 (en)
GB (1) GB2038020B (en)
HU (1) HU181900B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0578833A1 (en) * 1992-02-03 1994-01-19 Seiko Epson Corporation Variable focus visual power correction apparatus
FR2881846A1 (en) * 2005-02-08 2006-08-11 Essilor Int METHOD FOR DEFINING AN EXTRA FACE FOR EYEWEAR

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6619799B1 (en) 1999-07-02 2003-09-16 E-Vision, Llc Optical lens system with electro-active lens having alterably different focal lengths
EP1411382A3 (en) * 1999-07-02 2007-01-17 E-Vision, L.L.C. System, apparatus, and method for correcting vision using an electro-active lens
US7775660B2 (en) 1999-07-02 2010-08-17 E-Vision Llc Electro-active ophthalmic lens having an optical power blending region

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1112429A (en) * 1953-09-21 1956-03-14 Optical lens

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1112429A (en) * 1953-09-21 1956-03-14 Optical lens

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0578833A1 (en) * 1992-02-03 1994-01-19 Seiko Epson Corporation Variable focus visual power correction apparatus
EP0578833A4 (en) * 1992-02-03 1994-06-29 Seiko Epson Corp Variable focus visual power correction apparatus
FR2881846A1 (en) * 2005-02-08 2006-08-11 Essilor Int METHOD FOR DEFINING AN EXTRA FACE FOR EYEWEAR
WO2006084986A1 (en) * 2005-02-08 2006-08-17 Essilor International (Compagnie Generale D'optique) Method of defining a supplementary face for spectacles
US7775657B2 (en) 2005-02-08 2010-08-17 Essilor International (Compagnie Générale d'Optique) Method for defining a supplementary face for spectacles

Also Published As

Publication number Publication date
DD146214A1 (en) 1981-01-28
HU181900B (en) 1983-11-28
GB2038020A (en) 1980-07-16
FR2444955B1 (en) 1982-05-21
GB2038020B (en) 1983-06-15
DE2937743A1 (en) 1980-07-03

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Legal Events

Date Code Title Description
ST Notification of lapse