FR2644252B1 - Bague a came pour barillet d'objectif et procede de fabrication d'une telle bague - Google Patents

Bague a came pour barillet d'objectif et procede de fabrication d'une telle bague

Info

Publication number
FR2644252B1
FR2644252B1 FR8909518A FR8909518A FR2644252B1 FR 2644252 B1 FR2644252 B1 FR 2644252B1 FR 8909518 A FR8909518 A FR 8909518A FR 8909518 A FR8909518 A FR 8909518A FR 2644252 B1 FR2644252 B1 FR 2644252B1
Authority
FR
France
Prior art keywords
ring
manufacturing
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.)
Expired - Fee Related
Application number
FR8909518A
Other languages
English (en)
Other versions
FR2644252A1 (fr
Inventor
Makoto Iwamura
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/ja
Application filed by Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Publication of FR2644252A1 publication Critical patent/FR2644252A1/fr
Application granted granted Critical
Publication of FR2644252B1 publication Critical patent/FR2644252B1/fr
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)
FR8909518A 1989-03-09 1989-07-13 Bague a came pour barillet d'objectif et procede de fabrication d'une telle bague Expired - Fee Related FR2644252B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2680389U JPH02117510U (fr) 1989-03-09 1989-03-09
JP10698589A JPH02285310A (ja) 1989-04-26 1989-04-26 レンズ鏡筒のカム環の製造方法

Publications (2)

Publication Number Publication Date
FR2644252A1 FR2644252A1 (fr) 1990-09-14
FR2644252B1 true FR2644252B1 (fr) 1994-05-27

Family

ID=26364633

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8909518A Expired - Fee Related FR2644252B1 (fr) 1989-03-09 1989-07-13 Bague a came pour barillet d'objectif et procede de fabrication d'une telle bague

Country Status (3)

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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2653902B1 (fr) * 1989-10-27 1994-03-11 Asahi Kogaku Kogyo Kk
JPH0413910U (fr) * 1990-05-25 1992-02-04
US5386740A (en) * 1991-09-30 1995-02-07 Asahi Kogaku Kogyo Kabushiki Kaisha Rotary feed mechanism
JPH05346527A (ja) * 1992-06-12 1993-12-27 Nikon Corp レンズ鏡筒

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 (de) * 1972-11-13 1974-10-10 Eumig Pankratisches Objektiv
JPS5634881Y2 (fr) * 1976-03-18 1981-08-17
DE3236562A1 (de) * 1982-10-02 1984-04-05 Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar Einrichtung zur fokussierung eines optischen systems
US4585313A (en) * 1982-12-14 1986-04-29 West Electric Company Ltd. Lens drive device and optical lens assembly utilizing the same
JPH0646255B2 (ja) * 1985-01-11 1994-06-15 キヤノン株式会社 副絞りを有したレンズ鏡筒
JPH0723949B2 (ja) * 1985-04-02 1995-03-15 キヤノン株式会社 カメラ
US4805991A (en) * 1986-03-13 1989-02-21 Canon Kabushiki Kaisha Multi-layer resin molded article and method of making the same
DE3784672T2 (de) * 1986-12-27 1993-06-17 Victor Company Of Japan Antriebsregelung der zoomlinse in einem system veraenderlicher brennweite.
CA1331429C (fr) * 1988-06-03 1994-08-16 Hiroshi Nomura Barillet de tele-objectif et appareil photo utilisant ce barillet

Also Published As

Publication number Publication date
FR2644252A1 (fr) 1990-09-14
GB2229016B (en) 1993-07-07
GB8915590D0 (en) 1989-08-23
DE3922817C2 (de) 1995-06-08
DE3922817A1 (de) 1990-09-13
GB2229016A (en) 1990-09-12

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Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20080331