FR2681701B1 - Objectif zoom. - Google Patents

Objectif zoom.

Info

Publication number
FR2681701B1
FR2681701B1 FR929211402A FR9211402A FR2681701B1 FR 2681701 B1 FR2681701 B1 FR 2681701B1 FR 929211402 A FR929211402 A FR 929211402A FR 9211402 A FR9211402 A FR 9211402A FR 2681701 B1 FR2681701 B1 FR 2681701B1
Authority
FR
France
Prior art keywords
zoom objective
zoom
objective
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
FR929211402A
Other languages
English (en)
Other versions
FR2681701A1 (fr
Inventor
Takayuki Ito
Nobutaka Minefuji
Ito Takayuki
Minefuji Nobutaka
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
Application filed by Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Publication of FR2681701A1 publication Critical patent/FR2681701A1/fr
Application granted granted Critical
Publication of FR2681701B1 publication Critical patent/FR2681701B1/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
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/143—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only
    • G02B15/1431—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only the first group being positive
    • G02B15/143103—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only the first group being positive arranged ++-

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
FR929211402A 1991-09-24 1992-09-24 Objectif zoom. Expired - Fee Related FR2681701B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3315607A JPH0588085A (ja) 1991-09-24 1991-09-24 ズームレンズ

Publications (2)

Publication Number Publication Date
FR2681701A1 FR2681701A1 (fr) 1993-03-26
FR2681701B1 true FR2681701B1 (fr) 1994-09-30

Family

ID=18067395

Family Applications (1)

Application Number Title Priority Date Filing Date
FR929211402A Expired - Fee Related FR2681701B1 (fr) 1991-09-24 1992-09-24 Objectif zoom.

Country Status (5)

Country Link
US (1) US5363243A (fr)
JP (1) JPH0588085A (fr)
DE (1) DE4232065A1 (fr)
FR (1) FR2681701B1 (fr)
GB (1) GB2260201B (fr)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06123835A (ja) * 1992-10-12 1994-05-06 Asahi Optical Co Ltd ズームレンズ系
JP3245469B2 (ja) * 1993-01-26 2002-01-15 オリンパス光学工業株式会社 ２群ズームレンズ
US5831772A (en) * 1993-04-07 1998-11-03 Canon Kabushiki Kaisha Compact zoom lens
US5559636A (en) * 1993-11-12 1996-09-24 Asahi Kogaku Kogyo Kabushiki Kaisha Zoom lens system
JPH0894930A (ja) * 1994-09-21 1996-04-12 Minolta Co Ltd 複写用変倍レンズ系
KR0172009B1 (ko) * 1994-09-26 1999-05-01 이대원 광각 줌렌즈
JP3412939B2 (ja) * 1994-12-22 2003-06-03 キヤノン株式会社 ズームレンズ
JPH08262325A (ja) * 1995-03-20 1996-10-11 Minolta Co Ltd ズームレンズ
JP3647237B2 (ja) * 1997-12-24 2005-05-11 オリンパス株式会社 ズーム光学系
JP3523554B2 (ja) * 2000-01-28 2004-04-26 ペンタックス株式会社 ズームレンズ系
JP2003057546A (ja) 2001-08-20 2003-02-26 Pentax Corp ズームレンズ系
JP2003302577A (ja) 2002-04-09 2003-10-24 Olympus Optical Co Ltd 小型３群ズームレンズ
JPWO2012086199A1 (ja) * 2010-12-22 2014-05-22 富士フイルム株式会社 撮像レンズおよび撮像装置
WO2014017029A1 (fr) * 2012-07-23 2014-01-30 富士フイルム株式会社 Lentille d'imagerie et dispositif d'imagerie
CN105143948B (zh) 2013-03-27 2018-01-09 富士胶片株式会社 摄像透镜及摄像装置
US10234664B2 (en) * 2014-10-03 2019-03-19 Sony Corporation Medical stereomicroscope optical system and medical observation apparatus
JP6541277B2 (ja) * 2017-11-18 2019-07-10 エーエーシー テクノロジーズ ピーティーイー リミテッド 撮像光学レンズ
US10473897B2 (en) * 2017-12-04 2019-11-12 AAC Technologies Pte. Ltd. Camera optical lens
US10578836B2 (en) * 2017-12-18 2020-03-03 AAC Technologies Pte. Ltd. Camera optical lens
US20240201475A1 (en) * 2020-12-22 2024-06-20 Nikon Corporation Zoom optical system, optical apparatus and method for manufacturing the zoom optical system

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4822152A (en) * 1986-08-11 1989-04-18 Olympus Optical Co., Ltd. Compact high-vari-focal ratio zoom lens system
JPH083580B2 (ja) * 1986-12-18 1996-01-17 オリンパス光学工業株式会社 コンパクトな高変倍率ズ−ムレンズ
JPH0833515B2 (ja) * 1986-12-24 1996-03-29 オリンパス光学工業株式会社 コンパクトな高変倍率ズ−ムレンズ
JP2619632B2 (ja) * 1986-12-25 1997-06-11 オリンパス光学工業株式会社 コンパクトな高変倍率ズームレンズ
US4854682A (en) * 1987-11-13 1989-08-08 Olympus Optical Co., Ltd. Compact high vari-focal ratio zoom lens system
JPH0250117A (ja) * 1988-05-31 1990-02-20 Olympus Optical Co Ltd ズームレンズ
US4978204A (en) * 1988-09-08 1990-12-18 Asahi Kogaku Kogyo Kabushik Kaisha High zoom-ratio zoom lens system for use in a compact camera
JPH0331809A (ja) * 1989-06-29 1991-02-12 Olympus Optical Co Ltd ズームレンズ
JP2915987B2 (ja) * 1990-10-30 1999-07-05 旭光学工業株式会社 広角を包括するコンパクトカメラ用高変倍ズームレンズ
JP3149227B2 (ja) * 1991-09-13 2001-03-26 旭光学工業株式会社 ズームレンズ

Also Published As

Publication number Publication date
US5363243A (en) 1994-11-08
FR2681701A1 (fr) 1993-03-26
JPH0588085A (ja) 1993-04-09
GB2260201B (en) 1996-04-24
GB2260201A (en) 1993-04-07
GB9220224D0 (en) 1992-11-04
DE4232065A1 (de) 1993-03-25

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Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20070531