GB9200856D0 - Optical and ophthalmic glass with refractive index nd 1.68 and abbe number vd 41.6 - Google Patents

Optical and ophthalmic glass with refractive index nd 1.68 and abbe number vd 41.6

Info

Publication number
GB9200856D0
GB9200856D0 GB929200856A GB9200856A GB9200856D0 GB 9200856 D0 GB9200856 D0 GB 9200856D0 GB 929200856 A GB929200856 A GB 929200856A GB 9200856 A GB9200856 A GB 9200856A GB 9200856 D0 GB9200856 D0 GB 9200856D0
Authority
GB
United Kingdom
Prior art keywords
optical
refractive index
abbe number
ophthalmic glass
ophthalmic
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.)
Granted
Application number
GB929200856A
Other versions
GB2252101B (en
GB2252101A (en
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.)
Carl Zeiss AG
Original Assignee
Carl Zeiss AG
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 Carl Zeiss AG filed Critical Carl Zeiss AG
Publication of GB9200856D0 publication Critical patent/GB9200856D0/en
Publication of GB2252101A publication Critical patent/GB2252101A/en
Application granted granted Critical
Publication of GB2252101B publication Critical patent/GB2252101B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • 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
    • 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
    • C03C3/064—Glass compositions containing silica with less than 40% silica by weight containing boron
    • C03C3/068—Glass compositions containing silica with less than 40% silica by weight containing boron containing rare earths

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)
GB9200856A 1991-01-23 1992-01-15 Optical and ophthalmic glass with refractive index nd at least nd 1.68 and abbe number vd at least 41.6 Expired - Fee Related GB2252101B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4101793 1991-01-23
DE19914136975 DE4136975A1 (en) 1991-01-23 1991-11-11 OPTICAL AND OPHTHALMIC GLASS WITH A BREAK VALUE ND> = 1.68 AND A NUMBER (NY) (DOWN ARROW) D (DOWN ARROW)> = 41.6

Publications (3)

Publication Number Publication Date
GB9200856D0 true GB9200856D0 (en) 1992-03-11
GB2252101A GB2252101A (en) 1992-07-29
GB2252101B GB2252101B (en) 1994-06-29

Family

ID=25900420

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9200856A Expired - Fee Related GB2252101B (en) 1991-01-23 1992-01-15 Optical and ophthalmic glass with refractive index nd at least nd 1.68 and abbe number vd at least 41.6

Country Status (3)

Country Link
DE (1) DE4136975A1 (en)
FR (1) FR2671793B1 (en)
GB (1) GB2252101B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2872899B2 (en) * 1993-11-26 1999-03-24 株式会社オハラ Optical glass
US6413894B1 (en) * 1998-04-30 2002-07-02 Hoya Corporation Optical glass and optical product
FR2789071B1 (en) * 1999-02-03 2002-03-22 Corning Sa MINERAL GLASS (# 1.7), ADVANTAGEOUSLY REINFORCED BY ION EXCHANGE; OPHTHALMIC LENSES IN SAID GLASS

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3026605C2 (en) * 1980-07-14 1983-07-07 Schott Glaswerke, 6500 Mainz Acid-proof, hydrolytically stable optical and ophthalmic borosilicate glass of low density
BR8605356A (en) * 1985-11-29 1987-08-04 Corning Glass Works GLASS FOR OPTICAL AND / OR OPHTHALMIC APPLICATIONS
ES2043829T3 (en) * 1987-08-14 1994-01-01 Corning Glass Works LOW DENSITY GLASSES, HIGH INDEX AND CHEMICALLY DURABLE.

Also Published As

Publication number Publication date
FR2671793A1 (en) 1992-07-24
DE4136975A1 (en) 1992-07-30
GB2252101B (en) 1994-06-29
DE4136975C2 (en) 1993-03-04
GB2252101A (en) 1992-07-29
FR2671793B1 (en) 1995-03-17

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20050115