JPS6452621A - Production of optical element - Google Patents

Production of optical element

Info

Publication number
JPS6452621A
JPS6452621A JP21044387A JP21044387A JPS6452621A JP S6452621 A JPS6452621 A JP S6452621A JP 21044387 A JP21044387 A JP 21044387A JP 21044387 A JP21044387 A JP 21044387A JP S6452621 A JPS6452621 A JP S6452621A
Authority
JP
Japan
Prior art keywords
pressing
forces
metallic
productivity
accuracy
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
JP21044387A
Other languages
Japanese (ja)
Other versions
JPH0712942B2 (en
Inventor
Makoto Umetani
Kiyoshi Kuribayashi
Hideto Monju
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 JP21044387A priority Critical patent/JPH0712942B2/en
Publication of JPS6452621A publication Critical patent/JPS6452621A/en
Publication of JPH0712942B2 publication Critical patent/JPH0712942B2/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
    • C03B11/084—Construction of plunger or mould for making solid articles, e.g. lenses material composition or material properties of press dies therefor
    • C03B11/086—Construction of plunger or mould for making solid articles, e.g. lenses material composition or material properties of press dies therefor of coated dies
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2215/00—Press-moulding glass
    • C03B2215/02—Press-mould materials
    • C03B2215/08—Coated press-mould dies
    • C03B2215/10—Die base materials
    • C03B2215/12—Ceramics or cermets, e.g. cemented WC, Al2O3 or TiC
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2215/00—Press-moulding glass
    • C03B2215/02—Press-mould materials
    • C03B2215/08—Coated press-mould dies
    • C03B2215/14—Die top coat materials, e.g. materials for the glass-contacting layers
    • C03B2215/16—Metals or alloys, e.g. Ni-P, Ni-B, amorphous metals

Landscapes

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

Abstract

PURPOSE:To contrive improvement in accuracy and mass-productivity of products, by carrying out pressing in a mold having metallic tantalum formed on a pressing surface. CONSTITUTION:A pair of upper and lower pressing forces of a super hard alloy base metal 12 consisting essentially of WC are machined and mirror finishing is carried out by superfine grinding. The mirror surface is then coated with an ultrathin Ta film 11 by a sputtering method, etc., to provide a pressing mold. Alternatively, a recessed surface shape is formed by using metallic Ta 21 to form a pair of upper and lower pressing forces. These pressing forces are used as the top and bottom forces, set in a press to hot-press an optical glass in a state machined into a spherical form between both forces in nitrogen atmosphere, etc., and carry out pressing. In the process, since the metallic Ta itself or Ta metal thin film is present in the pressing surface, reaction with the glass element is prevented. Thereby accuracy and mass-productivity of the products are improved.
JP21044387A 1987-08-25 1987-08-25 Method for manufacturing optical glass element Expired - Lifetime JPH0712942B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21044387A JPH0712942B2 (en) 1987-08-25 1987-08-25 Method for manufacturing optical glass element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21044387A JPH0712942B2 (en) 1987-08-25 1987-08-25 Method for manufacturing optical glass element

Publications (2)

Publication Number Publication Date
JPS6452621A true JPS6452621A (en) 1989-02-28
JPH0712942B2 JPH0712942B2 (en) 1995-02-15

Family

ID=16589413

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21044387A Expired - Lifetime JPH0712942B2 (en) 1987-08-25 1987-08-25 Method for manufacturing optical glass element

Country Status (1)

Country Link
JP (1) JPH0712942B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02188433A (en) * 1989-01-13 1990-07-24 Matsushita Electric Ind Co Ltd Optical glass molded body and molding method thereof and thermal processing jig utilized therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02188433A (en) * 1989-01-13 1990-07-24 Matsushita Electric Ind Co Ltd Optical glass molded body and molding method thereof and thermal processing jig utilized therefor

Also Published As

Publication number Publication date
JPH0712942B2 (en) 1995-02-15

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Legal Events

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