FR2682489B1 - Objectif zoom. - Google Patents

Objectif zoom.

Info

Publication number
FR2682489B1
FR2682489B1 FR929212059A FR9212059A FR2682489B1 FR 2682489 B1 FR2682489 B1 FR 2682489B1 FR 929212059 A FR929212059 A FR 929212059A FR 9212059 A FR9212059 A FR 9212059A FR 2682489 B1 FR2682489 B1 FR 2682489B1
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
FR929212059A
Other languages
English (en)
Other versions
FR2682489A1 (fr
Inventor
Ito Takayuki
C O Asahi Kogaku Kogyo Kaisha
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 FR2682489A1 publication Critical patent/FR2682489A1/fr
Application granted granted Critical
Publication of FR2682489B1 publication Critical patent/FR2682489B1/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
    • G02B15/16—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 with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
    • 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)
  • Nonlinear Science (AREA)
  • Lenses (AREA)
FR929212059A 1991-10-11 1992-10-09 Objectif zoom. Expired - Fee Related FR2682489B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3329415A JPH05107478A (ja) 1991-10-11 1991-10-11 ズームレンズ

Publications (2)

Publication Number Publication Date
FR2682489A1 FR2682489A1 (fr) 1993-04-16
FR2682489B1 true FR2682489B1 (fr) 1994-09-30

Family

ID=18221150

Family Applications (1)

Application Number Title Priority Date Filing Date
FR929212059A Expired - Fee Related FR2682489B1 (fr) 1991-10-11 1992-10-09 Objectif zoom.

Country Status (5)

Country Link
US (1) US5343329A (fr)
JP (1) JPH05107478A (fr)
DE (1) DE4234144A1 (fr)
FR (1) FR2682489B1 (fr)
GB (1) GB2260423B (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0667093A (ja) * 1992-08-20 1994-03-11 Minolta Camera Co Ltd 高倍率ズームレンズ
JPH06123835A (ja) * 1992-10-12 1994-05-06 Asahi Optical Co Ltd ズームレンズ系
JP3368611B2 (ja) * 1993-03-26 2003-01-20 オリンパス光学工業株式会社 ズームレンズ
JP3294911B2 (ja) * 1993-07-27 2002-06-24 旭光学工業株式会社 ズームレンズ系
JP3375386B2 (ja) * 1993-08-31 2003-02-10 ペンタックス株式会社 高変倍ズームレンズ系
US5559636A (en) * 1993-11-12 1996-09-24 Asahi Kogaku Kogyo Kabushiki Kaisha Zoom lens system
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
JP2828923B2 (ja) * 1995-04-13 1998-11-25 株式会社リコー 高倍率のズームレンズ
JPH0921952A (ja) * 1995-07-06 1997-01-21 Minolta Co Ltd ズームレンズ
JP5839174B2 (ja) * 2011-09-14 2016-01-06 株式会社リコー 結像レンズ、撮影レンズユニット及び撮像装置
CN116520588B (zh) * 2023-07-03 2023-09-08 天府兴隆湖实验室 变焦镜头及光学探测系统

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
US4854682A (en) * 1987-11-13 1989-08-08 Olympus Optical Co., Ltd. Compact high vari-focal ratio zoom lens system
US4983027A (en) * 1988-03-31 1991-01-08 Minolta Camera Kabushiki Kaisha Compact zoom lens system with a high zoom ratio
JPH0250118A (ja) * 1988-05-02 1990-02-20 Ricoh Co Ltd ズームレンズ
JP2702520B2 (ja) * 1988-08-30 1998-01-21 株式会社リコー 小型ズームレンズ
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
JP3038350B2 (ja) * 1990-01-10 2000-05-08 オリンパス光学工業株式会社 広角ズームレンズ
JP3207848B2 (ja) * 1990-02-09 2001-09-10 東洋製罐株式会社 ケプラー式変倍ファインダー

Also Published As

Publication number Publication date
GB2260423B (en) 1994-11-09
JPH05107478A (ja) 1993-04-30
FR2682489A1 (fr) 1993-04-16
GB2260423A (en) 1993-04-14
US5343329A (en) 1994-08-30
GB9221409D0 (en) 1992-11-25
DE4234144A1 (de) 1993-04-15

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Legal Events

Date Code Title Description
ST Notification of lapse