JPS578509A - Lens barrel - Google Patents

Lens barrel

Info

Publication number
JPS578509A
JPS578509A JP8306380A JP8306380A JPS578509A JP S578509 A JPS578509 A JP S578509A JP 8306380 A JP8306380 A JP 8306380A JP 8306380 A JP8306380 A JP 8306380A JP S578509 A JPS578509 A JP S578509A
Authority
JP
Japan
Prior art keywords
barrel
resin
dies
molding
female side
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.)
Pending
Application number
JP8306380A
Other languages
Japanese (ja)
Inventor
Akiyasu Washimi
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 JP8306380A priority Critical patent/JPS578509A/en
Priority to DE19813123745 priority patent/DE3123745A1/en
Priority to US06/274,630 priority patent/US4385023A/en
Publication of JPS578509A publication Critical patent/JPS578509A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14754—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles being in movable or releasable engagement with the coating, e.g. bearing assemblies

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Lens Barrels (AREA)

Abstract

PURPOSE:To obtain a highly smooth and inexpensive lens barrel by manufacturing a female side barrel of a suitable resin by making use of the female side barrel made of metal or resin as a jig for molding of a male side barrel. CONSTITUTION:A female side barrel 6 made by turning a metallic material such as aluminum or molding a PPS resin or the like is fixed by means of the movable side cores 22, 23, stripper plate 17, and core 21 of stationary side of dies, and a resin such as polystyrene is injected into a cavity 25. When the molding is removed from the dies after cooling, the barrel 6 is formed into a shape wherein the cylindrical part enclosing the projecting part 6a of said barrel is secured. This is again mounted to the dies, and a PPS resin is injected and is cooled, thereafter the cylindrical part is dissolved away by a methyl acetate soln. Thereby, the highly smooth and inexpensive lens barrels 6, 7 are obtained.
JP8306380A 1980-06-19 1980-06-19 Lens barrel Pending JPS578509A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP8306380A JPS578509A (en) 1980-06-19 1980-06-19 Lens barrel
DE19813123745 DE3123745A1 (en) 1980-06-19 1981-06-15 Method for producing a lens holder subassembly
US06/274,630 US4385023A (en) 1980-06-19 1981-06-17 Method of making a lens barrel assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8306380A JPS578509A (en) 1980-06-19 1980-06-19 Lens barrel

Publications (1)

Publication Number Publication Date
JPS578509A true JPS578509A (en) 1982-01-16

Family

ID=13791720

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8306380A Pending JPS578509A (en) 1980-06-19 1980-06-19 Lens barrel

Country Status (1)

Country Link
JP (1) JPS578509A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS615214A (en) * 1984-06-20 1986-01-11 Hitachi Ltd Lens barrel
US10941828B2 (en) 2002-06-25 2021-03-09 Fox Factory, Inc. Gas spring with travel control

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS615214A (en) * 1984-06-20 1986-01-11 Hitachi Ltd Lens barrel
US10941828B2 (en) 2002-06-25 2021-03-09 Fox Factory, Inc. Gas spring with travel control

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