JPS6452623A - Mold member for molding optical element - Google Patents

Mold member for molding optical element

Info

Publication number
JPS6452623A
JPS6452623A JP20914387A JP20914387A JPS6452623A JP S6452623 A JPS6452623 A JP S6452623A JP 20914387 A JP20914387 A JP 20914387A JP 20914387 A JP20914387 A JP 20914387A JP S6452623 A JPS6452623 A JP S6452623A
Authority
JP
Japan
Prior art keywords
tantalum nitride
vapor deposition
base metal
nitride layer
tantalum
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
JP20914387A
Other languages
Japanese (ja)
Other versions
JPH0372579B2 (en
Inventor
Tetsuo Kuwabara
Masaaki Yokota
Makoto Kameyama
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 JP20914387A priority Critical patent/JPS6452623A/en
Publication of JPS6452623A publication Critical patent/JPS6452623A/en
Publication of JPH0372579B2 publication Critical patent/JPH0372579B2/ja
Granted 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
    • C03B2215/14—Die top coat materials, e.g. materials for the glass-contacting layers
    • C03B2215/22—Non-oxide ceramics

Abstract

PURPOSE:To contrive prolongation of mold life and reduction in production cost, by forming a tantalum nitride coating layer with a proper tantalum content on a cavity surface. CONSTITUTION:A super hard alloy or sintered SiC, etc., is used as a material for a cavity base metal 30 and a desired external shape is simultaneously formed through machining, such as cutting, grinding and polishing. In the process, the side of the forming surface is finished to a desired surface accuracy. A thin tantalum nitride layer 32 is then formed on the surface of the base metal 30 by an activating reaction vapor deposition, physical vapor deposition or chemical vapor deposition method. The tantalum nitride layer 32 in this case is regulated to about 20-80atom.% tantalum content. Since the tantalum nitride layer has extremely low fusibility to glass at high temperatures and surface hardness is high, mold life is prolonged in application to pressing molds 3 and 4. Since the base metal 30 is readily machinable, production cost of the molds 3 and 4 is reduced.
JP20914387A 1987-08-25 1987-08-25 Mold member for molding optical element Granted JPS6452623A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20914387A JPS6452623A (en) 1987-08-25 1987-08-25 Mold member for molding optical element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20914387A JPS6452623A (en) 1987-08-25 1987-08-25 Mold member for molding optical element

Publications (2)

Publication Number Publication Date
JPS6452623A true JPS6452623A (en) 1989-02-28
JPH0372579B2 JPH0372579B2 (en) 1991-11-19

Family

ID=16568018

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20914387A Granted JPS6452623A (en) 1987-08-25 1987-08-25 Mold member for molding optical element

Country Status (1)

Country Link
JP (1) JPS6452623A (en)

Also Published As

Publication number Publication date
JPH0372579B2 (en) 1991-11-19

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term
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Year of fee payment: 16