CA2408225A1 - Verre pour segments ophtalmiques a indice de refraction eleve - Google Patents

Verre pour segments ophtalmiques a indice de refraction eleve Download PDF

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Publication number
CA2408225A1
CA2408225A1 CA002408225A CA2408225A CA2408225A1 CA 2408225 A1 CA2408225 A1 CA 2408225A1 CA 002408225 A CA002408225 A CA 002408225A CA 2408225 A CA2408225 A CA 2408225A CA 2408225 A1 CA2408225 A1 CA 2408225A1
Authority
CA
Canada
Prior art keywords
glasses
pbo
cao
la2o3
nb2o5
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.)
Abandoned
Application number
CA002408225A
Other languages
English (en)
Inventor
Marie Comte
Paulo Marques
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.)
Corning Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2408225A1 publication Critical patent/CA2408225A1/fr
Abandoned legal-status Critical Current

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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

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)

Abstract

La présente invention concerne des verres à indice de réfraction très élevé (1,78 < n <= 1,83) comprenant les oxydes suivants, dont la concentration est exprimée en pourcentage en poids: SiO¿2?: entre 20 et < 27, B¿2?O¿3?: entre 5 et 11, Li¿2?O: entre 2 et 8, Na¿2?O: entre 0 et 5, K¿2?O: entre 0 et 5, BaO: entre 7 et 15, CaO: entre 0 et 11, La¿2?O¿3?: entre 7 et 12, PbO: entre 7 et 20, TiO¿2?: entre 7 et 14, ZrO¿2?: entre 0 et 5, et Nb¿2?O¿5?: entre > 8 et 16, pour autant que Li¿2?O+Na¿2?O+K¿2?O > 6, BaO+CaO+La¿2?O¿3? > 27 et TiO¿2?+Nb¿2?O¿5?+PbO > 29. L'invention concerne également leur utilisation pour la production de segments destinés à des lentilles correctrices multifocales, ainsi que des lentilles correctrices multifocales comportant au moins un segment de ce type dans leur structure.
CA002408225A 2001-03-13 2001-03-13 Verre pour segments ophtalmiques a indice de refraction eleve Abandoned CA2408225A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2001/007876 WO2002072491A1 (fr) 2001-03-13 2001-03-13 Verre pour segments ophtalmiques a indice de refraction eleve

Publications (1)

Publication Number Publication Date
CA2408225A1 true CA2408225A1 (fr) 2002-09-19

Family

ID=21742395

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002408225A Abandoned CA2408225A1 (fr) 2001-03-13 2001-03-13 Verre pour segments ophtalmiques a indice de refraction eleve

Country Status (6)

Country Link
EP (1) EP1280741A1 (fr)
JP (1) JP2004519402A (fr)
BR (1) BR0108000A (fr)
CA (1) CA2408225A1 (fr)
MX (1) MXPA03000625A (fr)
WO (1) WO2002072491A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7897531B2 (en) 2005-01-17 2011-03-01 Kabushiki Kaisha Ohara Glass
WO2021090589A1 (fr) * 2019-11-07 2021-05-14 株式会社 オハラ Verre optique, préforme et élément optique

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1406280A (en) * 1972-06-26 1975-09-17 Jenaer Glas Schott Gen Veb Optical borosilicate glass
DE2824982C3 (de) * 1978-06-07 1981-04-30 Jenaer Glaswerk Schott & Gen., 6500 Mainz Hochbrechende optische Gläser des Systems SiO↓2↓-B↓2↓O↓3↓-TiO↓2↓- ZrO↓2↓-BaO-Nb↓2↓O↓5↓-Li↓2↓O mit geringer Dichte von s = 3,4 - 3,7 für Fernteil- und Nahteil-Brillengläser mit Brechwerten n↓D↓ = 1,79 - 1,81 und Dispersionen v↓D↓ = 31 - 29
DE3121824C2 (de) * 1981-06-02 1984-06-14 Schott Glaswerke, 6500 Mainz Säurefestes, hydrolytisch beständiges optisches und ophthalmisches Glas geringer Dichte
FR2508433A1 (fr) 1981-06-24 1982-12-31 Corning Glass Works Verres ophtalmiques a indice de refraction eleve
FR2550187B1 (fr) 1983-08-02 1986-06-06 Corning Glass Works Verres de faible densite et de haut indice de refraction pour applications ophtalmiques et optiques
FR2762837B1 (fr) 1997-04-30 1999-07-16 Corning Sa Verres a indice de refraction eleve, lentilles correctrices multifocales les incorporant
FR2769618B1 (fr) 1997-10-10 2000-01-21 Corning Sa Verres a indice de refraction eleve, lentilles correctrices multifocales les incorporant
FR2804676B1 (fr) * 2000-02-04 2002-05-03 Corning Sa Verres a indice refraction tres eleve, lentilles correctrices multifocales les incorporant

Also Published As

Publication number Publication date
MXPA03000625A (es) 2003-05-23
BR0108000A (pt) 2002-12-17
EP1280741A1 (fr) 2003-02-05
JP2004519402A (ja) 2004-07-02
WO2002072491A1 (fr) 2002-09-19

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Legal Events

Date Code Title Description
FZDE Discontinued