JPS5571643A - Fluorophosphate optical glass - Google Patents

Fluorophosphate optical glass

Info

Publication number
JPS5571643A
JPS5571643A JP14279878A JP14279878A JPS5571643A JP S5571643 A JPS5571643 A JP S5571643A JP 14279878 A JP14279878 A JP 14279878A JP 14279878 A JP14279878 A JP 14279878A JP S5571643 A JPS5571643 A JP S5571643A
Authority
JP
Japan
Prior art keywords
compsn
optical glass
srf2
caf2
lif
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
JP14279878A
Other languages
Japanese (ja)
Other versions
JPS5814378B2 (en
Inventor
Hiroshi Nakamura
Takeo Ichimura
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.)
Nikon Corp
Nippon Chemical Industrial Co Ltd
Original Assignee
Nippon Chemical Industrial Co Ltd
Nippon Kogaku KK
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 Nippon Chemical Industrial Co Ltd, Nippon Kogaku KK filed Critical Nippon Chemical Industrial Co Ltd
Priority to JP53142798A priority Critical patent/JPS5814378B2/en
Publication of JPS5571643A publication Critical patent/JPS5571643A/en
Publication of JPS5814378B2 publication Critical patent/JPS5814378B2/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
    • C03C3/12—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

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

PURPOSE:To reduce the dispersion of a compsn. and improve the stability thereof to devitrification by determining the optimum content of LiF in the compsn.; reducing the P and O contents; introducing much CaF2; and specifying the ratio of F<->/O<2->. CONSTITUTION:Cations in glass are represented by fluorides as follows: by mol, PF5 5-20%, AlF3 18-42%, CaF2 17-35%, SrF2 0-25%, SrF2+BaF2 8-33%, LiF 0.8-7%, MgF2 0-22%, ZnF2 0-5%, PbF2 0-2%, YF3 0-7%, LaF3 0- 7% and ZrF4 0-3%. Oxygen ions are substd. for part of the fluorine ions to regulate the ratio of F<->/O<2-> to 2.5-15. By this compsn. low dispersion, Be-free fluorophosphate optical glass excellent in charcteristics such as refractive index and Abbe's no. is obtd. without lowering the softening point.
JP53142798A 1978-11-21 1978-11-21 fluorophosphate optical glass Expired JPS5814378B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53142798A JPS5814378B2 (en) 1978-11-21 1978-11-21 fluorophosphate optical glass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53142798A JPS5814378B2 (en) 1978-11-21 1978-11-21 fluorophosphate optical glass

Publications (2)

Publication Number Publication Date
JPS5571643A true JPS5571643A (en) 1980-05-29
JPS5814378B2 JPS5814378B2 (en) 1983-03-18

Family

ID=15323861

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53142798A Expired JPS5814378B2 (en) 1978-11-21 1978-11-21 fluorophosphate optical glass

Country Status (1)

Country Link
JP (1) JPS5814378B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0234581A2 (en) * 1986-02-28 1987-09-02 Hoya Corporation Fluoride glass and use thereof
JPH0416526A (en) * 1990-05-07 1992-01-21 Nikon Corp Lightweight fluorophosphate optical glass
JP2009203114A (en) * 2008-02-28 2009-09-10 Hoya Corp Fluorophosphate glass, glass material for press molding, optical element blank, optical elements, those producing methods, and producing method of glass molded article
JP2014005202A (en) * 2013-10-01 2014-01-16 Hoya Corp Fluorophosphate glass, glass material for press molding, optical element blank, optical element, producing methods of them, and producing method of glass molded article
CN113264677A (en) * 2018-10-31 2021-08-17 成都光明光电有限责任公司 Laser neodymium glass doped with fluorophosphate

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49130409A (en) * 1973-04-03 1974-12-13
JPS53105517A (en) * 1977-02-28 1978-09-13 Hoya Glass Works Ltd Fluorophosphate laser glass

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49130409A (en) * 1973-04-03 1974-12-13
JPS53105517A (en) * 1977-02-28 1978-09-13 Hoya Glass Works Ltd Fluorophosphate laser glass

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0234581A2 (en) * 1986-02-28 1987-09-02 Hoya Corporation Fluoride glass and use thereof
JPH0416526A (en) * 1990-05-07 1992-01-21 Nikon Corp Lightweight fluorophosphate optical glass
JP2009203114A (en) * 2008-02-28 2009-09-10 Hoya Corp Fluorophosphate glass, glass material for press molding, optical element blank, optical elements, those producing methods, and producing method of glass molded article
JP2014005202A (en) * 2013-10-01 2014-01-16 Hoya Corp Fluorophosphate glass, glass material for press molding, optical element blank, optical element, producing methods of them, and producing method of glass molded article
CN113264677A (en) * 2018-10-31 2021-08-17 成都光明光电有限责任公司 Laser neodymium glass doped with fluorophosphate

Also Published As

Publication number Publication date
JPS5814378B2 (en) 1983-03-18

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