JPS6479023A - Molding method for glass lens - Google Patents

Molding method for glass lens

Info

Publication number
JPS6479023A
JPS6479023A JP23650387A JP23650387A JPS6479023A JP S6479023 A JPS6479023 A JP S6479023A JP 23650387 A JP23650387 A JP 23650387A JP 23650387 A JP23650387 A JP 23650387A JP S6479023 A JPS6479023 A JP S6479023A
Authority
JP
Japan
Prior art keywords
stock
lens
pan
die
glass
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
JP23650387A
Other languages
Japanese (ja)
Other versions
JPH0712940B2 (en
Inventor
Shoji Nakamura
Yasuo Ishibashi
Masaaki Haruhara
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP23650387A priority Critical patent/JPH0712940B2/en
Publication of JPS6479023A publication Critical patent/JPS6479023A/en
Publication of JPH0712940B2 publication Critical patent/JPH0712940B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
    • C03B11/06—Construction of plunger or mould
    • C03B11/08—Construction of plunger or mould for making solid articles, e.g. lenses
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B29/00—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins
    • C03B29/02—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins in a discontinuous way
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)

Abstract

PURPOSE:To mass-produce a glass lens by simple mechanical work and heat- treating work at low cost by placing a cut and ground glass stock in a pan die, heating and softening it and also using a biconvex-shaped lens stock produced in the pan die. CONSTITUTION:A glass stock 13 is cut and worked to a disk and both end faces 16, 17 are ground in optical specular surfaces. The glass stock 13 is set in a pan 11 and after introducing this whole body into an electric oven and holding it at about 750 deg.C for about 5min, it is taken out from the electric oven and thereby a lens stock 21 which has a biconvex shape and is controlled in outer diameter by the pan die can be obtained. The lens stock 21 can be easily taken out from the pan die by such relation that the thermal expansion coefficient of the glass stock is larger than the thermal expansion coefficient of the pan die made of tantalum. When the lens stock obtained by such a way is arranged in a cavity 44 molded by upper and lower dies 41, 42 and a drum die 43, pressed and molded at 500 deg.C, a molded lens free from a burr can be obtained.
JP23650387A 1987-09-21 1987-09-21 Glass lens molding method Expired - Lifetime JPH0712940B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23650387A JPH0712940B2 (en) 1987-09-21 1987-09-21 Glass lens molding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23650387A JPH0712940B2 (en) 1987-09-21 1987-09-21 Glass lens molding method

Publications (2)

Publication Number Publication Date
JPS6479023A true JPS6479023A (en) 1989-03-24
JPH0712940B2 JPH0712940B2 (en) 1995-02-15

Family

ID=17001692

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23650387A Expired - Lifetime JPH0712940B2 (en) 1987-09-21 1987-09-21 Glass lens molding method

Country Status (1)

Country Link
JP (1) JPH0712940B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6539750B1 (en) * 1999-04-30 2003-04-01 Matsushita Electric Industrial Co., Ltd. Glass substrate forming mold and production method for glass substrate
CN104773946A (en) * 2014-01-15 2015-07-15 肖特股份有限公司 Method for manufacturing rod lenses, and rod lenses
US11367692B2 (en) 2016-04-07 2022-06-21 Schott Ag Lens cap for a transistor outline package

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6539750B1 (en) * 1999-04-30 2003-04-01 Matsushita Electric Industrial Co., Ltd. Glass substrate forming mold and production method for glass substrate
US6718799B2 (en) 1999-04-30 2004-04-13 Matsushita Electric Industrial Co., Ltd. Die and glass material for forming glass substrate, method for manufacturing glass substrate, and magnetic disk glass substrate
CN104773946A (en) * 2014-01-15 2015-07-15 肖特股份有限公司 Method for manufacturing rod lenses, and rod lenses
JP2015131756A (en) * 2014-01-15 2015-07-23 ショット アクチエンゲゼルシャフトＳｃｈｏｔｔ ＡＧ Method for manufacturing rod lens and rod lens
US11367692B2 (en) 2016-04-07 2022-06-21 Schott Ag Lens cap for a transistor outline package

Also Published As

Publication number Publication date
JPH0712940B2 (en) 1995-02-15

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