GB740143A - Optical glass with high refractive index - Google Patents

Optical glass with high refractive index

Info

Publication number
GB740143A
GB740143A GB19835/54A GB1983554A GB740143A GB 740143 A GB740143 A GB 740143A GB 19835/54 A GB19835/54 A GB 19835/54A GB 1983554 A GB1983554 A GB 1983554A GB 740143 A GB740143 A GB 740143A
Authority
GB
United Kingdom
Prior art keywords
optical glass
sro
refractive index
oxide
high refractive
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.)
Expired
Application number
GB19835/54A
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 GB740143A publication Critical patent/GB740143A/en
Expired 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)

Abstract

740,143. Optical glass. ZEISS-STIFTUNG, G., [trading as JENAER GLASWERK SCHOTT & GEN.], July 7, 1954 [July 17, 1953], No. 19835/54. Class 56 An optical glass with a refractive index of at least 1.69 and free from thorium and beryllium oxides comprises (percentage parts by weight) SiO 2 3-10; B 2 O 3 28-35; La 2 O 3 17-25; CaO 10-15; ZnO 8-14; PbO+ BaO+SrO 1-18, the alkaline earth oxide+ zinc oxide content being between 29.5 and 45 and the lead oxide+alkaline earth oxide+zinc oxide content being between 33.5 and 45. The lead oxide is from 0-8 and the BaO+SrO from 0-10. Up to 8 per cent SrO 2 may be added. Preferred ranges within these limits are given, also particular examples.
GB19835/54A 1953-07-17 1954-07-07 Optical glass with high refractive index Expired GB740143A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE740143X 1953-07-17

Publications (1)

Publication Number Publication Date
GB740143A true GB740143A (en) 1955-11-09

Family

ID=6643341

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19835/54A Expired GB740143A (en) 1953-07-17 1954-07-07 Optical glass with high refractive index

Country Status (2)

Country Link
FR (1) FR1104691A (en)
GB (1) GB740143A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2520347A1 (en) * 1982-01-22 1983-07-29 Schott Glaswerke OPTICAL GLASS WITH REFRACTION INDEX BETWEEN 1.60 AND 1.69 AND A CONSTRINGENCE 54, WITH A PARTICULARLY LOW DENSITY AND A PARTICULARLY HIGH RESISTANCE TO CHEMICALS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2520347A1 (en) * 1982-01-22 1983-07-29 Schott Glaswerke OPTICAL GLASS WITH REFRACTION INDEX BETWEEN 1.60 AND 1.69 AND A CONSTRINGENCE 54, WITH A PARTICULARLY LOW DENSITY AND A PARTICULARLY HIGH RESISTANCE TO CHEMICALS

Also Published As

Publication number Publication date
FR1104691A (en) 1955-11-23

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