FR2227236A1 - High-dispersion optical glass - based on barium fluorophosphate and fluorides of aluminium, magnesium, calcium and strontium - Google Patents

High-dispersion optical glass - based on barium fluorophosphate and fluorides of aluminium, magnesium, calcium and strontium

Info

Publication number
FR2227236A1
FR2227236A1 FR7315318A FR7315318A FR2227236A1 FR 2227236 A1 FR2227236 A1 FR 2227236A1 FR 7315318 A FR7315318 A FR 7315318A FR 7315318 A FR7315318 A FR 7315318A FR 2227236 A1 FR2227236 A1 FR 2227236A1
Authority
FR
France
Prior art keywords
mole
optical glass
fluorophosphate
fluorides
strontium
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
FR7315318A
Other languages
French (fr)
Other versions
FR2227236B1 (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.)
TALLIN STEKOLNY TARBEKLAAS
Original Assignee
TALLIN STEKOLNY TARBEKLAAS
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 TALLIN STEKOLNY TARBEKLAAS filed Critical TALLIN STEKOLNY TARBEKLAAS
Priority to FR7315318A priority Critical patent/FR2227236A1/en
Publication of FR2227236A1 publication Critical patent/FR2227236A1/en
Application granted granted Critical
Publication of FR2227236B1 publication Critical patent/FR2227236B1/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
    • C03C3/00—Glass compositions
    • C03C3/12—Silica-free oxide glass compositions
    • C03C3/23—Silica-free oxide glass compositions containing halogen and at least one oxide, e.g. oxide of boron
    • C03C3/247—Silica-free oxide glass compositions containing halogen and at least one oxide, e.g. oxide of boron containing fluorine and phosphorus

Abstract

Optical glass, which can replace the expensive CaF2 or BaF2 monocrystals in instruments in which a similar index of refraction but a higher dispersion degrees is required, consists of (in mole %): BaPO3F 8.0-29.9, AlF3 30-40, MgF2 4.76-10.0, CaF2 15-30, and SrF2 4.76-20. Opt 2-8 mole % YF3, 5-10 mole % MgO. and 5 mole % CaO can be added. These glasses have wide transparency range. Monochromatic aberration is greatly reduced; at higher BaPO3F contents (20.0-29.9 mole %) and in the presence of MgO, the spherical aberration is reduced.
FR7315318A 1973-04-27 1973-04-27 High-dispersion optical glass - based on barium fluorophosphate and fluorides of aluminium, magnesium, calcium and strontium Granted FR2227236A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7315318A FR2227236A1 (en) 1973-04-27 1973-04-27 High-dispersion optical glass - based on barium fluorophosphate and fluorides of aluminium, magnesium, calcium and strontium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7315318A FR2227236A1 (en) 1973-04-27 1973-04-27 High-dispersion optical glass - based on barium fluorophosphate and fluorides of aluminium, magnesium, calcium and strontium

Publications (2)

Publication Number Publication Date
FR2227236A1 true FR2227236A1 (en) 1974-11-22
FR2227236B1 FR2227236B1 (en) 1976-11-12

Family

ID=9118572

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7315318A Granted FR2227236A1 (en) 1973-04-27 1973-04-27 High-dispersion optical glass - based on barium fluorophosphate and fluorides of aluminium, magnesium, calcium and strontium

Country Status (1)

Country Link
FR (1) FR2227236A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2306174A1 (en) * 1975-03-29 1976-10-29 Leitz Ernst Gmbh FLUOROPHOSPHATE OPTICAL GLASS
FR2475526A1 (en) * 1980-02-13 1981-08-14 Jenaer Glaswerk Schott & Gen FLUORIDE GLASSES WITH LOW PHOSPHATE CONTENT
FR2478067A1 (en) * 1980-03-17 1981-09-18 Jenaer Glaswerk Schott & Gen OPTICAL GLASS BASED ON PHOSPHATE FLUORIDE AND HIGH POSITIVE ABNORMAL PARTIAL DISPERSION
FR2480273A1 (en) * 1980-04-14 1981-10-16 Jenaer Glaswerk Schott & Gen OPTICAL FLUORIDE LENSES
FR2487813A1 (en) * 1980-08-04 1982-02-05 Jenaer Glaswerk Veb FLUOROPHOSPHATE OPTICAL LENSES HAVING REFRACTIVE INDEX BETWEEN 1.43 AND 1.48 AND A NUMBER OF ABBE BETWEEN 92 AND 82
US4346176A (en) * 1980-02-13 1982-08-24 Nippon Telegraph & Telephone Public Corp. Glass for optical fiber

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2306174A1 (en) * 1975-03-29 1976-10-29 Leitz Ernst Gmbh FLUOROPHOSPHATE OPTICAL GLASS
FR2475526A1 (en) * 1980-02-13 1981-08-14 Jenaer Glaswerk Schott & Gen FLUORIDE GLASSES WITH LOW PHOSPHATE CONTENT
US4346176A (en) * 1980-02-13 1982-08-24 Nippon Telegraph & Telephone Public Corp. Glass for optical fiber
FR2478067A1 (en) * 1980-03-17 1981-09-18 Jenaer Glaswerk Schott & Gen OPTICAL GLASS BASED ON PHOSPHATE FLUORIDE AND HIGH POSITIVE ABNORMAL PARTIAL DISPERSION
FR2480273A1 (en) * 1980-04-14 1981-10-16 Jenaer Glaswerk Schott & Gen OPTICAL FLUORIDE LENSES
FR2487813A1 (en) * 1980-08-04 1982-02-05 Jenaer Glaswerk Veb FLUOROPHOSPHATE OPTICAL LENSES HAVING REFRACTIVE INDEX BETWEEN 1.43 AND 1.48 AND A NUMBER OF ABBE BETWEEN 92 AND 82

Also Published As

Publication number Publication date
FR2227236B1 (en) 1976-11-12

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Legal Events

Date Code Title Description
ST Notification of lapse