FR2333758A2 - PHOTOCHROMIC GLASS INTENDED TO BE USED AS A MATERIAL FOR NEAR VIEWS IN MULTI-FOCUS EYEWEAR LENSES - Google Patents

PHOTOCHROMIC GLASS INTENDED TO BE USED AS A MATERIAL FOR NEAR VIEWS IN MULTI-FOCUS EYEWEAR LENSES

Info

Publication number
FR2333758A2
FR2333758A2 FR7613545A FR7613545A FR2333758A2 FR 2333758 A2 FR2333758 A2 FR 2333758A2 FR 7613545 A FR7613545 A FR 7613545A FR 7613545 A FR7613545 A FR 7613545A FR 2333758 A2 FR2333758 A2 FR 2333758A2
Authority
FR
France
Prior art keywords
focus
photochromic glass
eyewear lenses
glass intended
near views
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
FR7613545A
Other languages
French (fr)
Other versions
FR2333758B2 (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.)
Schott AG
Original Assignee
Jenaer Glaswerk Schott and 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 and Gen filed Critical Jenaer Glaswerk Schott and Gen
Publication of FR2333758A2 publication Critical patent/FR2333758A2/en
Application granted granted Critical
Publication of FR2333758B2 publication Critical patent/FR2333758B2/fr
Granted 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
    • 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)
FR7613545A 1975-05-07 1976-05-06 PHOTOCHROMIC GLASS INTENDED TO BE USED AS A MATERIAL FOR NEAR VIEWS IN MULTI-FOCUS EYEWEAR LENSES Granted FR2333758A2 (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 (2)

Publication Number Publication Date
FR2333758A2 true FR2333758A2 (en) 1977-07-01
FR2333758B2 FR2333758B2 (en) 1979-07-13

Family

ID=5945941

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7613545A Granted FR2333758A2 (en) 1975-05-07 1976-05-06 PHOTOCHROMIC GLASS INTENDED TO BE USED AS A MATERIAL FOR NEAR VIEWS IN MULTI-FOCUS EYEWEAR LENSES

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
DE2520260C3 (en) 1978-07-13
JPS569458B2 (en) 1981-03-02
ATA94576A (en) 1978-09-15
IT1058047B (en) 1982-04-10
FR2333758B2 (en) 1979-07-13
AT349670B (en) 1979-04-25
DE2520260A1 (en) 1976-11-18
JPS51134708A (en) 1976-11-22
GB1501820A (en) 1978-02-22

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