FR1230265A - Crown optical lenses - Google Patents

Crown optical lenses

Info

Publication number
FR1230265A
FR1230265A FR800247A FR800247A FR1230265A FR 1230265 A FR1230265 A FR 1230265A FR 800247 A FR800247 A FR 800247A FR 800247 A FR800247 A FR 800247A FR 1230265 A FR1230265 A FR 1230265A
Authority
FR
France
Prior art keywords
optical lenses
crown optical
crown
lenses
optical
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
FR800247A
Other languages
French (fr)
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.)
Ernst Leitz Wetzlar GmbH
Original Assignee
Ernst Leitz Wetzlar GmbH
Ernst Leitz GmbH
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 Ernst Leitz Wetzlar GmbH, Ernst Leitz GmbH filed Critical Ernst Leitz Wetzlar GmbH
Application granted granted Critical
Publication of FR1230265A publication Critical patent/FR1230265A/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
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight 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)
FR800247A 1958-09-19 1959-07-16 Crown optical lenses Expired FR1230265A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1230265X 1958-09-19

Publications (1)

Publication Number Publication Date
FR1230265A true FR1230265A (en) 1960-09-14

Family

ID=7734932

Family Applications (1)

Application Number Title Priority Date Filing Date
FR800247A Expired FR1230265A (en) 1958-09-19 1959-07-16 Crown optical lenses

Country Status (1)

Country Link
FR (1) FR1230265A (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

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