JPS5734923A - Method and apparatus for heating, compressing and molding plastic lens - Google Patents

Method and apparatus for heating, compressing and molding plastic lens

Info

Publication number
JPS5734923A
JPS5734923A JP10926180A JP10926180A JPS5734923A JP S5734923 A JPS5734923 A JP S5734923A JP 10926180 A JP10926180 A JP 10926180A JP 10926180 A JP10926180 A JP 10926180A JP S5734923 A JPS5734923 A JP S5734923A
Authority
JP
Japan
Prior art keywords
mold
heating
lens blank
lens
blank
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
JP10926180A
Other languages
Japanese (ja)
Other versions
JPS5947974B2 (en
Inventor
Masao Takagi
Kiyoshi Wada
Toshiji Sakuma
Hisashi Nichibe
Seiichiro Shimomura
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP10926180A priority Critical patent/JPS5947974B2/en
Publication of JPS5734923A publication Critical patent/JPS5734923A/en
Publication of JPS5947974B2 publication Critical patent/JPS5947974B2/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses

Abstract

PURPOSE:To obtain the lens having excellent optical performance while ignoring the dispersion of the volume of a lens blank by measuring the hoop stress of a mold generated in a molding process and adjusting and controlling the ram pressure of a heating compressing molding machine according to the measuring value. CONSTITUTION:The mold 2 is heated by a heat medium supplied to a temperature adjusting flow path 10 and reaches a predetermined temperature in a mold heating process through known technique. The lens blank 1 is charged into the mold 2 at a point of the time and shifts to a lens blank heating process, and a fluid layer is formed on the surface. The blank shifts to a compression process and further a cooling process. It is preferable that the heat medium for heating or cooling in said each process is supplied and controlled by means of a controller 22 on the basis of conditions respectively set to a reference mold temperature setter 16 and a reference hoop stress setter 19.
JP10926180A 1980-08-11 1980-08-11 Method and apparatus for heat compression molding of plastic lenses Expired JPS5947974B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10926180A JPS5947974B2 (en) 1980-08-11 1980-08-11 Method and apparatus for heat compression molding of plastic lenses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10926180A JPS5947974B2 (en) 1980-08-11 1980-08-11 Method and apparatus for heat compression molding of plastic lenses

Publications (2)

Publication Number Publication Date
JPS5734923A true JPS5734923A (en) 1982-02-25
JPS5947974B2 JPS5947974B2 (en) 1984-11-22

Family

ID=14505684

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10926180A Expired JPS5947974B2 (en) 1980-08-11 1980-08-11 Method and apparatus for heat compression molding of plastic lenses

Country Status (1)

Country Link
JP (1) JPS5947974B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS608021A (en) * 1983-06-28 1985-01-16 Tekunopurasu:Kk Compression molding
JPS62191128A (en) * 1986-02-19 1987-08-21 Canon Inc Pressure mold of optical element

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS608021A (en) * 1983-06-28 1985-01-16 Tekunopurasu:Kk Compression molding
JPH042410B2 (en) * 1983-06-28 1992-01-17
JPS62191128A (en) * 1986-02-19 1987-08-21 Canon Inc Pressure mold of optical element
JPH0579007B2 (en) * 1986-02-19 1993-11-01 Canon Kk

Also Published As

Publication number Publication date
JPS5947974B2 (en) 1984-11-22

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