JPH0471853B2 - - Google Patents

Info

Publication number
JPH0471853B2
JPH0471853B2 JP29140987A JP29140987A JPH0471853B2 JP H0471853 B2 JPH0471853 B2 JP H0471853B2 JP 29140987 A JP29140987 A JP 29140987A JP 29140987 A JP29140987 A JP 29140987A JP H0471853 B2 JPH0471853 B2 JP H0471853B2
Authority
JP
Japan
Prior art keywords
glass
mold
cutting
molding
molded
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.)
Expired
Application number
JP29140987A
Other languages
English (en)
Japanese (ja)
Other versions
JPH01133948A (ja
Inventor
Isamu Shigyo
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP29140987A priority Critical patent/JPH01133948A/ja
Publication of JPH01133948A publication Critical patent/JPH01133948A/ja
Publication of JPH0471853B2 publication Critical patent/JPH0471853B2/ja
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B7/00—Distributors for the molten glass; Means for taking-off charges of molten glass; Producing the gob, e.g. controlling the gob shape, weight or delivery tact
    • C03B7/10—Cutting-off or severing the glass flow with the aid of knives or scissors or non-contacting cutting means, e.g. a gas jet; Construction of the blades used
    • 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
    • C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
    • C03B11/16—Gearing or controlling mechanisms specially adapted for glass presses
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B21/00—Severing glass sheets, tubes or rods while still plastic
    • C03B21/02—Severing glass sheets, tubes or rods while still plastic by cutting
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2215/00—Press-moulding glass
    • C03B2215/40—Product characteristics
    • C03B2215/46—Lenses, e.g. bi-convex
    • C03B2215/48—Convex-concave
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2215/00—Press-moulding glass
    • C03B2215/70—Horizontal or inclined press axis
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2215/00—Press-moulding glass
    • C03B2215/76—Pressing whereby some glass overflows unrestrained beyond the press mould in a direction perpendicular to the press axis
    • C03B2215/77—Pressing whereby some glass overflows unrestrained beyond the press mould in a direction perpendicular to the press axis with means to trim off excess material

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)
  • Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
  • Manipulator (AREA)
JP29140987A 1987-11-18 1987-11-18 光学素子の製造方法 Granted JPH01133948A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29140987A JPH01133948A (ja) 1987-11-18 1987-11-18 光学素子の製造方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29140987A JPH01133948A (ja) 1987-11-18 1987-11-18 光学素子の製造方法

Publications (2)

Publication Number Publication Date
JPH01133948A JPH01133948A (ja) 1989-05-26
JPH0471853B2 true JPH0471853B2 (ko) 1992-11-16

Family

ID=17768519

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29140987A Granted JPH01133948A (ja) 1987-11-18 1987-11-18 光学素子の製造方法

Country Status (1)

Country Link
JP (1) JPH01133948A (ko)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5275637A (en) * 1990-01-31 1994-01-04 Canon Kabushiki Kaisha Method of manufacturing a glass optical part
JPH03228836A (ja) * 1990-01-31 1991-10-09 Canon Inc ガラス光学部品の製造方法
JP2579016B2 (ja) * 1990-01-31 1997-02-05 キヤノン株式会社 ガラス光学部品の製造方法
US5322541A (en) * 1991-03-28 1994-06-21 Matsushita Electric Industrial Co., Ltd. Method of producing glass blank
JP5009416B2 (ja) * 2009-12-29 2012-08-22 Ｈｏｙａ株式会社 磁気ディスク用ガラス基板の製造方法
CN102656631B (zh) * 2009-12-29 2016-06-22 Hoya株式会社 磁盘用玻璃基板的制造方法以及磁盘用玻璃基板
SG176974A1 (en) 2010-03-31 2012-02-28 Hoya Corp Manufacturing method of glass substrate for magnetic disk, manufacturing method of glass blank, glass substrate for magnetic disk, and glass blank
JP2012160252A (ja) 2011-01-31 2012-08-23 Hoya Corp 磁気ディスク用ガラス基板の製造方法
JP5905765B2 (ja) * 2011-03-31 2016-04-20 Hoya株式会社 磁気ディスク用板状ガラス素材の製造方法、磁気ディスク用ガラス基板の製造方法
CN103547539B (zh) * 2011-04-21 2016-10-12 Hoya株式会社 磁盘用玻璃坯料的制造方法及磁盘用玻璃基板的制造方法、磁盘用玻璃坯料、磁盘用玻璃基板及磁盘
MY166836A (en) * 2011-04-27 2018-07-24 Hoya Corp Method for manufacturing glass blank for magnetic disk, method for manufacturing glass substrate for magnetic disk, glass blank for magnetic disk
WO2012160818A1 (ja) * 2011-05-23 2012-11-29 Hoya株式会社 磁気ディスク用ガラス基板の製造方法

Also Published As

Publication number Publication date
JPH01133948A (ja) 1989-05-26

Similar Documents

Publication Publication Date Title
JPH0471853B2 (ko)
JP6739131B2 (ja) ガラス製光学部品成形用金型並びにその金型を用いたガラス製光学部品の製造方法
JPH0513096B2 (ko)
JP4368368B2 (ja) ガラス塊の製造方法、その製造装置および光学素子の製造方法
JPH0419172B2 (ko)
JPH0445454B2 (ko)
JP4289716B2 (ja) ガラス素子の成形方法
JP3630829B2 (ja) 光学素子成形用素材の製造方法
JPH0472777B2 (ko)
JPH0445459B2 (ko)
JPH01153538A (ja) 光学素子の製造方法
JPH01153540A (ja) 光学素子の製造方法
JPH0729778B2 (ja) 光学素子の製造方法
JPS63248727A (ja) ガラス成形品の製造方法および製造装置
JPH01212240A (ja) 光学素子の成形装置
JP2501585B2 (ja) 光学素子の成形方法
JPH01148715A (ja) 光学素子の成形用型
JP2662300B2 (ja) ガラス成形品の製造方法および装置
JPH0629147B2 (ja) 光学素子の成形方法
JP4666679B2 (ja) モールドプレス成形装置、及び成形体の製造方法
JP2651260B2 (ja) ガラス光学部品の製造方法
JPH01212241A (ja) 光学素子の成形方法
JP2504802B2 (ja) 光学成形体のプレス成形方法及びその装置
JP2808560B2 (ja) 溶融ガラスの流出方法および装置
JPH10158019A (ja) 光学素子の成形方法及び光学素子及び光学素子成形用素材の製造方法及び精密素子の成形方法及び精密素子