BE525925A - - Google Patents

Info

Publication number
BE525925A
BE525925A BE525925DA BE525925A BE 525925 A BE525925 A BE 525925A BE 525925D A BE525925D A BE 525925DA BE 525925 A BE525925 A BE 525925A
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 BE525925A publication Critical patent/BE525925A/xx

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/00028—Bifocal lenses; Multifocal lenses
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/20—Uniting glass pieces by fusing without substantial reshaping
    • C03B23/22—Uniting glass lenses, e.g. forming bifocal lenses
    • 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

Landscapes

  • Ophthalmology & Optometry (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Eyeglasses (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
BE525925D 1953-01-23 BE525925A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US321034XA 1953-01-23 1953-01-23

Publications (1)

Publication Number Publication Date
BE525925A true BE525925A (fr)

Family

ID=21863118

Family Applications (1)

Application Number Title Priority Date Filing Date
BE525925D BE525925A (fr) 1953-01-23

Country Status (5)

Country Link
BE (1) BE525925A (fr)
CH (1) CH321034A (fr)
FR (1) FR1095674A (fr)
GB (1) GB739341A (fr)
NL (2) NL184568C (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3130029A (en) * 1959-06-23 1964-04-21 Bausch & Lomb Method for making fused multifocal lenses

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3149948A (en) * 1957-10-07 1964-09-22 Pittsburgh Plate Glass Co Method for forming multifocal lens blanks
NL247751A (fr) * 1959-01-26
US3130028A (en) * 1959-05-26 1964-04-21 Pittsburgh Plate Glass Co Glass feeding
GB990483A (en) * 1962-07-04 1965-04-28 Pilkington Brothers Ltd Improvements in or relating to the pressure moulding of articles
DE102006020991B4 (de) * 2006-05-04 2009-09-10 Carl Zeiss Ag Verfahren zum Herstellen eines Formkörpers aus Glas oder Glaskeramik

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3130029A (en) * 1959-06-23 1964-04-21 Bausch & Lomb Method for making fused multifocal lenses

Also Published As

Publication number Publication date
NL184568C (nl)
NL85388C (fr)
FR1095674A (fr) 1955-06-06
CH321034A (de) 1957-04-30
GB739341A (en) 1955-10-26

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