CH583915A5 - - Google Patents

Info

Publication number
CH583915A5
CH583915A5 CH1069574A CH1069574A CH583915A5 CH 583915 A5 CH583915 A5 CH 583915A5 CH 1069574 A CH1069574 A CH 1069574A CH 1069574 A CH1069574 A CH 1069574A CH 583915 A5 CH583915 A5 CH 583915A5
Authority
CH
Switzerland
Application number
CH1069574A
Original Assignee
American Optical Corp
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 American Optical Corp filed Critical American Optical Corp
Publication of CH583915A5 publication Critical patent/CH583915A5/xx

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
    • G02C7/063—Shape of the progressive surface
    • G02C7/065—Properties on the principal line
    • 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
    • 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
    • G02C7/068—Special properties achieved by the combination of the front and back surfaces
CH1069574A 1973-08-16 1974-08-05 CH583915A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US38904473A 1973-08-16 1973-08-16

Publications (1)

Publication Number Publication Date
CH583915A5 true CH583915A5 (en) 1977-01-14

Family

ID=23536594

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1069574A CH583915A5 (en) 1973-08-16 1974-08-05

Country Status (3)

Country Link
CA (1) CA1012391A (en)
CH (1) CH583915A5 (en)
GB (1) GB1484196A (en)

Also Published As

Publication number Publication date
GB1484196A (en) 1977-09-01
CA1012391A (en) 1977-06-21

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Legal Events

Date Code Title Description
PUE Assignment

Owner name: AO, INC.

PL Patent ceased