JPS57179055A - Manufacture of refractive index distribution type lens - Google Patents

Manufacture of refractive index distribution type lens

Info

Publication number
JPS57179055A
JPS57179055A JP6196281A JP6196281A JPS57179055A JP S57179055 A JPS57179055 A JP S57179055A JP 6196281 A JP6196281 A JP 6196281A JP 6196281 A JP6196281 A JP 6196281A JP S57179055 A JPS57179055 A JP S57179055A
Authority
JP
Japan
Prior art keywords
rod
glass
refractive index
ions
ion exchange
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
JP6196281A
Other languages
Japanese (ja)
Other versions
JPS6363502B2 (en
Inventor
Ichiro Kitano
Koichi Nishizawa
Akitaka Momokita
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.)
Nippon Sheet Glass Co Ltd
Original Assignee
Nippon Sheet Glass Co Ltd
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 Sheet Glass Co Ltd filed Critical Nippon Sheet Glass Co Ltd
Priority to JP6196281A priority Critical patent/JPS57179055A/en
Publication of JPS57179055A publication Critical patent/JPS57179055A/en
Publication of JPS6363502B2 publication Critical patent/JPS6363502B2/ja
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
    • C03C3/04—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)
  • Glass Melting And Manufacturing (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Surface Treatment Of Glass (AREA)
  • Glass Compositions (AREA)

Abstract

PURPOSE:To continuously change the refractive index of a glass rod having a specified composition from the central axis to the periphery by immersing the rod in a molten ion exchange medium to ion-exchange specified components in the glass for a component in the medium and by heat treating the rod. CONSTITUTION:Glass contg., by mole, 57-63% SiO2, 17-23% B2O3, 5-17% Na2O and 3-15% Tl2O as principal components or further contg. ZnO, As2O3, Sb2O3, etc. is melted to form a glass rod. This glass rod is immersed in a molten salt bath of an ion exchange medium such as KNO3 to exchange Tl and Na ions in the rod for K ions, and by keeping the rod at the glass transition temp. in air or an oil bath causing practically no ion exchange for >=20hr, the remaining Tl ions and the peripheral K ions are moved toward the periphery of the rod and the interior, respectively to continuously increase the refractive index of the peripheral part of the rod from the central part. The rod is then cut and finished by polishing. Thus, a refractive index distribution type lens is manufactured.
JP6196281A 1981-04-24 1981-04-24 Manufacture of refractive index distribution type lens Granted JPS57179055A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6196281A JPS57179055A (en) 1981-04-24 1981-04-24 Manufacture of refractive index distribution type lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6196281A JPS57179055A (en) 1981-04-24 1981-04-24 Manufacture of refractive index distribution type lens

Publications (2)

Publication Number Publication Date
JPS57179055A true JPS57179055A (en) 1982-11-04
JPS6363502B2 JPS6363502B2 (en) 1988-12-07

Family

ID=13186313

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6196281A Granted JPS57179055A (en) 1981-04-24 1981-04-24 Manufacture of refractive index distribution type lens

Country Status (1)

Country Link
JP (1) JPS57179055A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59131543A (en) * 1983-01-17 1984-07-28 Nippon Sheet Glass Co Ltd Manufacture of index gradient-type lens
US4886538A (en) * 1987-07-28 1989-12-12 Polaroid Corporation Process for tapering waveguides
JP2003104748A (en) * 2001-09-28 2003-04-09 Fujikura Ltd Method for manufacturing gradient index lens
CN111592236A (en) * 2013-11-25 2020-08-28 康宁股份有限公司 Method for obtaining stress distribution in glass

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002365251A (en) * 2001-06-07 2002-12-18 Nippon Sheet Glass Co Ltd Microchemical system
JP2003344323A (en) 2002-05-30 2003-12-03 Nippon Sheet Glass Co Ltd Photothermal conversion spectroscopic analysis method and photothermal conversion spectroscopic analyzer implementing the method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59131543A (en) * 1983-01-17 1984-07-28 Nippon Sheet Glass Co Ltd Manufacture of index gradient-type lens
US4886538A (en) * 1987-07-28 1989-12-12 Polaroid Corporation Process for tapering waveguides
JP2003104748A (en) * 2001-09-28 2003-04-09 Fujikura Ltd Method for manufacturing gradient index lens
CN111592236A (en) * 2013-11-25 2020-08-28 康宁股份有限公司 Method for obtaining stress distribution in glass
CN111592236B (en) * 2013-11-25 2022-11-18 康宁股份有限公司 Method for obtaining stress distribution in glass
US11820701B2 (en) 2013-11-25 2023-11-21 Corning Incorporated Method for achieving a stress profile in a glass

Also Published As

Publication number Publication date
JPS6363502B2 (en) 1988-12-07

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