DE3377535D1 - Bifocal contact lens comprising a plurality of concentric zones - Google Patents

Bifocal contact lens comprising a plurality of concentric zones

Info

Publication number
DE3377535D1
DE3377535D1 DE8383306247T DE3377535T DE3377535D1 DE 3377535 D1 DE3377535 D1 DE 3377535D1 DE 8383306247 T DE8383306247 T DE 8383306247T DE 3377535 T DE3377535 T DE 3377535T DE 3377535 D1 DE3377535 D1 DE 3377535D1
Authority
DE
Germany
Prior art keywords
contact lens
concentric zones
bifocal contact
bifocal
concentric
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
Application number
DE8383306247T
Other languages
English (en)
Inventor
Michael Harold Freeman
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.)
Novartis AG
Original Assignee
Pilkington PLC
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 Pilkington PLC filed Critical Pilkington PLC
Application granted granted Critical
Publication of DE3377535D1 publication Critical patent/DE3377535D1/de
Expired 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
    • G02C7/04—Contact lenses for the eyes
    • G02C7/041—Contact lenses for the eyes bifocal; multifocal
    • G02C7/044—Annular configuration, e.g. pupil tuned
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1876—Diffractive Fresnel lenses; Zone plates; Kinoforms
    • 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
    • G02C7/04—Contact lenses for the eyes
    • G02C7/041—Contact lenses for the eyes bifocal; multifocal
    • G02C7/042—Simultaneous type
    • 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
    • G02C2202/20—Diffractive and Fresnel lenses or lens portions
DE8383306247T 1982-10-27 1983-10-14 Bifocal contact lens comprising a plurality of concentric zones Expired DE3377535D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8230621 1982-10-27

Publications (1)

Publication Number Publication Date
DE3377535D1 true DE3377535D1 (en) 1988-09-01

Family

ID=10533855

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8383306247T Expired DE3377535D1 (en) 1982-10-27 1983-10-14 Bifocal contact lens comprising a plurality of concentric zones

Country Status (7)

Country Link
US (1) US4637697A (de)
EP (1) EP0109753B1 (de)
JP (1) JPS59104622A (de)
AU (1) AU558519B2 (de)
DE (1) DE3377535D1 (de)
GB (1) GB2129157B (de)
IE (1) IE56087B1 (de)

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GB2129157A (en) 1984-05-10
EP0109753A2 (de) 1984-05-30
AU2044983A (en) 1984-05-03
JPS641772B2 (de) 1989-01-12
EP0109753B1 (de) 1988-07-27
IE56087B1 (en) 1991-04-10
GB2129157B (en) 1986-02-05
AU558519B2 (en) 1987-01-29
IE832438L (en) 1984-04-27
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GB8327520D0 (en) 1983-11-16
US4637697A (en) 1987-01-20
EP0109753A3 (en) 1985-01-09

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