BE533468A - - Google Patents

Info

Publication number
BE533468A
BE533468A BE533468DA BE533468A BE 533468 A BE533468 A BE 533468A BE 533468D A BE533468D A BE 533468DA BE 533468 A BE533468 A BE 533468A
Authority
BE
Belgium
Application number
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.)
Publication of BE533468A publication Critical patent/BE533468A/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
    • B24B13/0012—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor for multifocal lenses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
    • B24B13/06—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor grinding of lenses, the tool or work being controlled by information-carrying means, e.g. patterns, punched tapes, magnetic tapes
    • B24B13/065—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor grinding of lenses, the tool or work being controlled by information-carrying means, e.g. patterns, punched tapes, magnetic tapes using a template
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Health & Medical Sciences (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Eyeglasses (AREA)
BE533468D 1953-11-25 BE533468A (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR790310X 1953-11-25

Publications (1)

Publication Number Publication Date
BE533468A true BE533468A (xx)

Family

ID=9221689

Family Applications (1)

Application Number Title Priority Date Filing Date
BE533468D BE533468A (xx) 1953-11-25

Country Status (3)

Country Link
US (1) US2869422A (xx)
BE (1) BE533468A (xx)
GB (1) GB790310A (xx)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1509090A (fr) * 1966-11-29 1968-01-12 Lunetiers Cottet Poichet Soc D Perfectionnements aux lentilles ophtalmiques à puissance focale progressivement variable
US4002439A (en) * 1973-01-10 1977-01-11 David Volk Method of forming an ophthalmic lens for presbyopia and aphakia
US4056311A (en) * 1973-08-16 1977-11-01 American Optical Corporation Progressive power ophthalmic lens having a plurality of viewing zones with non-discontinuous variations therebetween
NL168626C (nl) * 1973-08-16 1982-04-16 American Optical Corp Lens voor een bril met over het oppervlak varierende sterkte.
CA1012392A (en) * 1973-08-16 1977-06-21 American Optical Corporation Progressive power ophthalmic lens
US4055379A (en) * 1973-08-16 1977-10-25 American Optical Corporation Multifocal lens
DE2814678C2 (de) * 1978-04-05 1982-07-29 Hermann Prof. Dr.med. 4400 Münster Gernet Sehhilfe bei einseitiger Aphakie oder Pseudophakie
FR2486666A1 (fr) * 1980-07-09 1982-01-15 Essilor Int Lentille ophtalmique a foyers multiples
US4349374A (en) * 1981-01-21 1982-09-14 Camelot Industries Corporation Method and apparatus for manufacturing glass progressive lenses
GB8528460D0 (en) * 1985-11-19 1985-12-24 Sola Int Holdings Multifocal lens
DE4412370A1 (de) * 1994-04-12 1995-10-19 Schneider Gmbh & Co Kg Verfahren und Vorrichtung zum Herstellen asphärischer Linsenoberflächen
US5867246A (en) * 1994-10-21 1999-02-02 Sola International Holdings, Ltd. Enhanced ophthalmic lens
US5812237A (en) * 1995-11-27 1998-09-22 Roddy; Kenneth C. Ophthalmic no-line progressive addition lenses
GB2337133A (en) * 1998-05-06 1999-11-10 Chen Chin Jen Spectacle lens
FR2782663B1 (fr) * 1998-08-28 2000-11-17 Denis Girod Procede de realisation d'un verre correcteur a foyers multiples, et systeme de mise en oeuvre d'un tel procede
JP2002532751A (ja) * 1998-12-16 2002-10-02 ウェズリー ジェッセン コーポレイション 非球面多焦点コンタクトレンズ
US8272734B2 (en) * 2004-11-16 2012-09-25 Essilor International, S.A. Non-progressive multifocal lens with large near/intermediate area
US20060103806A1 (en) * 2004-11-16 2006-05-18 Prio Corporation Non-progressive multi-focal lens with large near/intermediate area

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US805438A (en) * 1905-06-16 1905-11-28 Louis Bell Bifocal lens.
US1143316A (en) * 1911-07-18 1915-06-15 Augustin Georges Poullain Optical lens.
US1351785A (en) * 1919-10-22 1920-09-07 Arthur E Paige Multifocal optical element and method and means for making the same
US1518405A (en) * 1923-05-19 1924-12-09 American Optical Corp Ophthalmic lens
US2109474A (en) * 1931-12-07 1938-03-01 Evans Charles Ernest Spectacle lens
US2001952A (en) * 1932-12-14 1935-05-21 Birchall Henry James Lenses and their combination and arrangement in various instruments and apparatus
US2410145A (en) * 1939-10-11 1946-10-29 American Optical Corp Lens and process of making the same
US2310925A (en) * 1939-10-11 1943-02-16 American Optical Corp Process of making lenses
US2328584A (en) * 1940-07-06 1943-09-07 Harvey C Rones Multifocal lens
US2405989A (en) * 1941-08-12 1946-08-20 Beach Lens Corp Lens
US2399706A (en) * 1943-12-09 1946-05-07 Harvey C Rones Manufacture of lenses for eyeglasses
US2475275A (en) * 1945-01-19 1949-07-05 Birchall Henry James Lens of variable focal power having surfaces of involute form
US2755602A (en) * 1951-12-17 1956-07-24 Charles E Evans Lens grinding machine and method

Also Published As

Publication number Publication date
US2869422A (en) 1959-01-20
GB790310A (en) 1958-02-05

Similar Documents

Publication Publication Date Title
IT558253A (xx)
JPS304368B1 (xx)
BE517130A (xx)
FR65696E (xx)
AT199365B (xx)
JPS3115816Y1 (xx)
FR1100014A (xx)
AT196785B (xx)
AT197771B (xx)
AT199317B (xx)
AT205166B (xx)
AT213751B (xx)
BE533468A (xx)
BE513609A (xx)
BE51713A (xx)
BE521450A (xx)
AU156551A (xx)
BE516895A (xx)
BE516823A (xx)
BE516806A (xx)
BE526030A (xx)
BE517254A (xx)
BE516474A (xx)
BE517732A (xx)
BE10545A (xx)