CA1012390A - Progressive power ophthalmic lens - Google Patents

Progressive power ophthalmic lens

Info

Publication number
CA1012390A
CA1012390A CA204,509A CA204509A CA1012390A CA 1012390 A CA1012390 A CA 1012390A CA 204509 A CA204509 A CA 204509A CA 1012390 A CA1012390 A CA 1012390A
Authority
CA
Canada
Prior art keywords
ophthalmic lens
progressive power
power ophthalmic
progressive
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
Application number
CA204,509A
Other versions
CA204509S (en
Inventor
John T. Winthrop
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.)
American Optical Corp
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
Application granted granted Critical
Publication of CA1012390A publication Critical patent/CA1012390A/en
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
    • G02C7/06—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
    • 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

Landscapes

  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Eyeglasses (AREA)
CA204,509A 1973-08-16 1974-07-10 Progressive power ophthalmic lens Expired CA1012390A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US38904273A 1973-08-16 1973-08-16

Publications (1)

Publication Number Publication Date
CA1012390A true CA1012390A (en) 1977-06-21

Family

ID=23536585

Family Applications (1)

Application Number Title Priority Date Filing Date
CA204,509A Expired CA1012390A (en) 1973-08-16 1974-07-10 Progressive power ophthalmic lens

Country Status (2)

Country Link
CA (1) CA1012390A (en)
GB (1) GB1484382A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2814916C3 (en) 1978-04-06 1982-01-07 Optische Werke G. Rodenstock, 8000 München Spectacle lens with a progression area located between the far part and the near part
GB2146791B (en) * 1983-09-16 1987-01-28 Suwa Seikosha Kk Progressive multifocal ophthalmic lens

Also Published As

Publication number Publication date
GB1484382A (en) 1977-09-01

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