GB8915590D0 - Cam ring of lens barrel and method for manufacturing the same - Google Patents

Cam ring of lens barrel and method for manufacturing the same

Info

Publication number
GB8915590D0
GB8915590D0 GB898915590A GB8915590A GB8915590D0 GB 8915590 D0 GB8915590 D0 GB 8915590D0 GB 898915590 A GB898915590 A GB 898915590A GB 8915590 A GB8915590 A GB 8915590A GB 8915590 D0 GB8915590 D0 GB 8915590D0
Authority
GB
United Kingdom
Prior art keywords
manufacturing
same
lens barrel
cam ring
cam
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
GB898915590A
Other versions
GB2229016A (en
GB2229016B (en
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.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo 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
Priority claimed from JP2680389U external-priority patent/JPH02117510U/ja
Priority claimed from JP10698589A external-priority patent/JPH02285310A/en
Application filed by Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Publication of GB8915590D0 publication Critical patent/GB8915590D0/en
Publication of GB2229016A publication Critical patent/GB2229016A/en
Application granted granted Critical
Publication of GB2229016B publication Critical patent/GB2229016B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
    • G02B7/102—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens controlled by a microcomputer

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lens Barrels (AREA)
GB8915590A 1989-03-09 1989-07-07 Cam ring of lens barrel and method for manufacturing the same Expired - Fee Related GB2229016B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2680389U JPH02117510U (en) 1989-03-09 1989-03-09
JP10698589A JPH02285310A (en) 1989-04-26 1989-04-26 Manufacture of cam ring of lens barrel

Publications (3)

Publication Number Publication Date
GB8915590D0 true GB8915590D0 (en) 1989-08-23
GB2229016A GB2229016A (en) 1990-09-12
GB2229016B GB2229016B (en) 1993-07-07

Family

ID=26364633

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8915590A Expired - Fee Related GB2229016B (en) 1989-03-09 1989-07-07 Cam ring of lens barrel and method for manufacturing the same

Country Status (3)

Country Link
DE (1) DE3922817C2 (en)
FR (1) FR2644252B1 (en)
GB (1) GB2229016B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2237406B (en) * 1989-10-27 1993-11-03 Asahi Optical Co Ltd Zoom lens barrel
JPH0413910U (en) * 1990-05-25 1992-02-04
US5386740A (en) * 1991-09-30 1995-02-07 Asahi Kogaku Kogyo Kabushiki Kaisha Rotary feed mechanism
JPH05346527A (en) * 1992-06-12 1993-12-27 Nikon Corp Lens barrel

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1950166A (en) * 1931-09-14 1934-03-06 Otto B Durholz Variable focus lens unit
US3330615A (en) * 1963-05-06 1967-07-11 Eastman Kodak Co Zoom lens
AT318389B (en) * 1972-11-13 1974-10-10 Eumig Pancratic lens
JPS5634881Y2 (en) * 1976-03-18 1981-08-17
DE3236562A1 (en) * 1982-10-02 1984-04-05 Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar Device for focusing an optical system
US4585313A (en) * 1982-12-14 1986-04-29 West Electric Company Ltd. Lens drive device and optical lens assembly utilizing the same
JPH0646255B2 (en) * 1985-01-11 1994-06-15 キヤノン株式会社 Lens barrel with sub diaphragm
JPH0723949B2 (en) * 1985-04-02 1995-03-15 キヤノン株式会社 camera
US4805991A (en) * 1986-03-13 1989-02-21 Canon Kabushiki Kaisha Multi-layer resin molded article and method of making the same
EP0273382B1 (en) * 1986-12-27 1993-03-10 Victor Company Of Japan, Limited Drive control of zoom lens in zooming system
CA1331429C (en) * 1988-06-03 1994-08-16 Hiroshi Nomura Zoom lens barrel and camera incorporating such barrel

Also Published As

Publication number Publication date
DE3922817C2 (en) 1995-06-08
FR2644252A1 (en) 1990-09-14
FR2644252B1 (en) 1994-05-27
DE3922817A1 (en) 1990-09-13
GB2229016A (en) 1990-09-12
GB2229016B (en) 1993-07-07

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20070707