IT1058047B - PHOTOTROPIC GLASS SUITABLE FOR OBTAINING LENSES FROM MULTIFOCAL GLASSES - Google Patents

PHOTOTROPIC GLASS SUITABLE FOR OBTAINING LENSES FROM MULTIFOCAL GLASSES

Info

Publication number
IT1058047B
IT1058047B IT4881676A IT4881676A IT1058047B IT 1058047 B IT1058047 B IT 1058047B IT 4881676 A IT4881676 A IT 4881676A IT 4881676 A IT4881676 A IT 4881676A IT 1058047 B IT1058047 B IT 1058047B
Authority
IT
Italy
Prior art keywords
glass suitable
phototropic glass
multifocal glasses
obtaining lenses
lenses
Prior art date
Application number
IT4881676A
Other languages
Italian (it)
Original Assignee
Jenaer Glaswerk Schott & Gen
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 Jenaer Glaswerk Schott & Gen filed Critical Jenaer Glaswerk Schott & Gen
Application granted granted Critical
Publication of IT1058047B publication Critical patent/IT1058047B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C4/00—Compositions for glass with special properties
    • C03C4/04—Compositions for glass with special properties for photosensitive glass
    • C03C4/06—Compositions for glass with special properties for photosensitive glass for phototropic or photochromic glass
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/062—Glass compositions containing silica with less than 40% silica by weight
    • C03C3/07—Glass compositions containing silica with less than 40% silica by weight containing lead
    • C03C3/072—Glass compositions containing silica with less than 40% silica by weight containing lead containing boron
    • C03C3/074—Glass compositions containing silica with less than 40% silica by weight containing lead containing boron containing zinc

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Compositions (AREA)
  • Eyeglasses (AREA)
IT4881676A 1975-05-07 1976-04-01 PHOTOTROPIC GLASS SUITABLE FOR OBTAINING LENSES FROM MULTIFOCAL GLASSES IT1058047B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752520260 DE2520260C3 (en) 1975-05-07 1975-05-07 Phototropic glass, suitable as a near-part material for fusing with photochromic far-part glasses, based on an optical glass of the SiO2 -B2 O3 -Al2 O3 -La2 O3 - (ZnO) system

Publications (1)

Publication Number Publication Date
IT1058047B true IT1058047B (en) 1982-04-10

Family

ID=5945941

Family Applications (1)

Application Number Title Priority Date Filing Date
IT4881676A IT1058047B (en) 1975-05-07 1976-04-01 PHOTOTROPIC GLASS SUITABLE FOR OBTAINING LENSES FROM MULTIFOCAL GLASSES

Country Status (6)

Country Link
JP (1) JPS51134708A (en)
AT (1) AT349670B (en)
DE (1) DE2520260C3 (en)
FR (1) FR2333758A2 (en)
GB (1) GB1501820A (en)
IT (1) IT1058047B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4211569A (en) * 1979-03-09 1980-07-08 Corning Glass Works High index ophthalmic glasses
DE3032580C2 (en) * 1980-08-29 1984-09-13 Deutsche Spezialglas Ag, 3223 Delligsen Phototropic multilayer glass and process for its manufacture
DE3117000C2 (en) * 1981-04-29 1986-05-28 Schott Glaswerke, 6500 Mainz Phototropic glass with a refractive index? 1.59, an Abbe number? 40 and a density ≦ 3.2 g / cm? 3?
JP4907850B2 (en) * 2003-06-11 2012-04-04 日本特殊陶業株式会社 Low-temperature fired dielectric ceramic composition and manufacturing method thereof

Also Published As

Publication number Publication date
DE2520260B2 (en) 1977-11-10
JPS569458B2 (en) 1981-03-02
FR2333758B2 (en) 1979-07-13
JPS51134708A (en) 1976-11-22
AT349670B (en) 1979-04-25
DE2520260C3 (en) 1978-07-13
GB1501820A (en) 1978-02-22
FR2333758A2 (en) 1977-07-01
DE2520260A1 (en) 1976-11-18
ATA94576A (en) 1978-09-15

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