IT1142911B - Perfezionamento nelle lenti oftalmi che per correzione di presbiopia con potere ottico progressivo - Google Patents

Perfezionamento nelle lenti oftalmi che per correzione di presbiopia con potere ottico progressivo

Info

Publication number
IT1142911B
IT1142911B IT49533/81A IT4953381A IT1142911B IT 1142911 B IT1142911 B IT 1142911B IT 49533/81 A IT49533/81 A IT 49533/81A IT 4953381 A IT4953381 A IT 4953381A IT 1142911 B IT1142911 B IT 1142911B
Authority
IT
Italy
Prior art keywords
presbyopia
refinement
correction
optical power
ophthalmic lenses
Prior art date
Application number
IT49533/81A
Other languages
English (en)
Other versions
IT8149533A0 (it
Inventor
John T Winthrop
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 IT8149533A0 publication Critical patent/IT8149533A0/it
Application granted granted Critical
Publication of IT1142911B publication Critical patent/IT1142911B/it

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

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)
IT49533/81A 1981-02-09 1981-10-21 Perfezionamento nelle lenti oftalmi che per correzione di presbiopia con potere ottico progressivo IT1142911B (it)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US23275581A 1981-02-09 1981-02-09
US24613981A 1981-04-02 1981-04-02

Publications (2)

Publication Number Publication Date
IT8149533A0 IT8149533A0 (it) 1981-10-21
IT1142911B true IT1142911B (it) 1986-10-15

Family

ID=26926301

Family Applications (1)

Application Number Title Priority Date Filing Date
IT49533/81A IT1142911B (it) 1981-02-09 1981-10-21 Perfezionamento nelle lenti oftalmi che per correzione di presbiopia con potere ottico progressivo

Country Status (2)

Country Link
DE (1) DE3116524C2 (it)
IT (1) IT1142911B (it)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3433916C2 (de) * 1984-09-15 1986-10-16 Optische Werke G. Rodenstock, 8000 München Brillenglas für eine Halbbrille
US4838675A (en) * 1987-06-19 1989-06-13 Sola International Holdings, Ltd. Method for improving progressive lens designs and resulting article
DE3739974A1 (de) * 1987-11-25 1989-06-08 Rodenstock Optik G Progressives brillenglas
FR2661519B1 (fr) * 1990-04-25 1992-07-31 Essilor Int Procede pour faciliter la realisation d'une lentille ophtalmique progressive, et lentille(s) ophtalmique(s) progressive(s) correspondante(s).
DE69113127T2 (de) * 1990-06-13 1996-03-21 Seiko Epson Corp Brillenlinse.
US5285222A (en) * 1992-11-20 1994-02-08 Gentex Optics, Inc. Progressive lens series
US5327181A (en) * 1993-01-12 1994-07-05 Gentex Optics, Inc. Progressive lens for specialty and occupational use

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2109474A (en) * 1931-12-07 1938-03-01 Evans Charles Ernest Spectacle lens
US2878721A (en) * 1954-02-03 1959-03-24 Farrand Optical Co Inc Multifocal ophthalmic lenses
BE755907A (fr) * 1969-09-11 1971-02-15 Lunetiers Lentilles a puissance focale progressive
NL7107504A (it) * 1971-06-01 1972-12-05
NL168626C (nl) * 1973-08-16 1982-04-16 American Optical Corp Lens voor een bril met over het oppervlak varierende sterkte.
DE2814916C3 (de) * 1978-04-06 1982-01-07 Optische Werke G. Rodenstock, 8000 München Brillenglas mit einem zwischen Fernteil und Nahteil liegenden Progressionsbereich
EP0027339A3 (en) * 1979-10-11 1981-05-06 U.K. Wiseman Limited Progressive power ophthalmic lenses

Also Published As

Publication number Publication date
IT8149533A0 (it) 1981-10-21
DE3116524C2 (de) 1993-06-24
DE3116524A1 (de) 1982-08-19

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Legal Events

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TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19951031