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JPS57175739A - Preparation of rod lens - Google Patents

Preparation of rod lens

Info

Publication number
JPS57175739A
JPS57175739A JP5698881A JP5698881A JPS57175739A JP S57175739 A JPS57175739 A JP S57175739A JP 5698881 A JP5698881 A JP 5698881A JP 5698881 A JP5698881 A JP 5698881A JP S57175739 A JPS57175739 A JP S57175739A
Authority
JP
Japan
Prior art keywords
parent material
glass
ultrasonic wave
rod lens
tree
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.)
Pending
Application number
JP5698881A
Other languages
Japanese (ja)
Inventor
Masao Kawachi
Takao Edahiro
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 Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP5698881A priority Critical patent/JPS57175739A/en
Publication of JPS57175739A publication Critical patent/JPS57175739A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J19/10—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing sonic or ultrasonic vibrations
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
    • C03B37/01446—Thermal after-treatment of preforms, e.g. dehydrating, consolidating, sintering
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
    • C03B37/01446—Thermal after-treatment of preforms, e.g. dehydrating, consolidating, sintering
    • C03B37/0146—Furnaces therefor, e.g. muffle tubes, furnace linings

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Thermal Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Glass Melting And Manufacturing (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

PURPOSE:To eliminate refractive index fluctuation like the growth rings of a tree in a parent material of glass and to obtain a quart type rod lens having improved characteristics, by heating the parent material at high temperature and simultaneously applying ultrasonic wave to it before the parent material is drawn. CONSTITUTION:The parent material 1 of glass of the quartz type is put in a carbon heating element stored in the furnace container 28. The ultrasonic vibrator 23 is connected through the supporting bar 21 and the insulating part 22 to the top of the parent material 1. First, electricity is applied to the carbon heating element 29 so that the parent material 1 is heated partially at about 2,000 deg.C, and simultaneously the ultrasonic vibrator 23 is driven so that ultrasonic wave is applied to the heated part 31. By this process, ultrasonic wave is absorbed effectively in the heated part 31 softened by the high temperature, so that refractive index fluctuation like layer or the growth rings of a tree in the inside of the parent material 1 of glass is reduced.
JP5698881A 1981-04-17 1981-04-17 Preparation of rod lens Pending JPS57175739A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5698881A JPS57175739A (en) 1981-04-17 1981-04-17 Preparation of rod lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5698881A JPS57175739A (en) 1981-04-17 1981-04-17 Preparation of rod lens

Publications (1)

Publication Number Publication Date
JPS57175739A true JPS57175739A (en) 1982-10-28

Family

ID=13042869

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5698881A Pending JPS57175739A (en) 1981-04-17 1981-04-17 Preparation of rod lens

Country Status (1)

Country Link
JP (1) JPS57175739A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6186431A (en) * 1984-10-04 1986-05-01 Asahi Glass Co Ltd Vitrification method of porous quartz glass base material
JPH01142607A (en) * 1987-11-05 1989-06-05 Cselt Spa (Cent Stud E Lab Telecomun) Reduction in attenuation for optical fiber
US6801369B2 (en) 2001-05-09 2004-10-05 Hamamatsu Photonics K.K. Preform for an optical lens, an optical lens, and a method of manufacturing an optical lens
US6947226B2 (en) 2001-05-09 2005-09-20 Hamamatsu Photonics K.K. Optical lens-use base material, optical lens, and method of producing optical lens
US7145724B2 (en) 2001-05-09 2006-12-05 Hamamatsu Photonics K.K. Optical lens and semiconductor laser device
US7322877B2 (en) 2001-05-09 2008-01-29 Hamamatsu Photonics K.K. Production method for optical lens
US7743631B2 (en) 2001-05-09 2010-06-29 Hamamatsu Photonics K.K. Method of forming an optical lens by drawing material with curved surface parts

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6186431A (en) * 1984-10-04 1986-05-01 Asahi Glass Co Ltd Vitrification method of porous quartz glass base material
JPH01142607A (en) * 1987-11-05 1989-06-05 Cselt Spa (Cent Stud E Lab Telecomun) Reduction in attenuation for optical fiber
US6801369B2 (en) 2001-05-09 2004-10-05 Hamamatsu Photonics K.K. Preform for an optical lens, an optical lens, and a method of manufacturing an optical lens
US6947226B2 (en) 2001-05-09 2005-09-20 Hamamatsu Photonics K.K. Optical lens-use base material, optical lens, and method of producing optical lens
US7038860B2 (en) 2001-05-09 2006-05-02 Hamamatsu Photonics K.K. Preform for an optical lens, an optical lens, and a method of manufacturing an optical lens
US7110193B2 (en) 2001-05-09 2006-09-19 Hamamatsu Photonics K.K. Optical lens preform, optical lens, and method of making optical lens
US7145724B2 (en) 2001-05-09 2006-12-05 Hamamatsu Photonics K.K. Optical lens and semiconductor laser device
US7322877B2 (en) 2001-05-09 2008-01-29 Hamamatsu Photonics K.K. Production method for optical lens
US7561335B2 (en) 2001-05-09 2009-07-14 Hamamatsu Photonics K.K. Optical lens and semiconductor laser apparatus
US7743631B2 (en) 2001-05-09 2010-06-29 Hamamatsu Photonics K.K. Method of forming an optical lens by drawing material with curved surface parts
US7833089B2 (en) 2001-05-09 2010-11-16 Hamamatsu Photonics K.K. Optical lens preform, optical lens, and method of making optical lens

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