JPS6276313U - - Google Patents

Info

Publication number
JPS6276313U
JPS6276313U JP1986170937U JP17093786U JPS6276313U JP S6276313 U JPS6276313 U JP S6276313U JP 1986170937 U JP1986170937 U JP 1986170937U JP 17093786 U JP17093786 U JP 17093786U JP S6276313 U JPS6276313 U JP S6276313U
Authority
JP
Japan
Prior art keywords
lens
focal length
lens group
zoom
entire system
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
JP1986170937U
Other languages
English (en)
Other versions
JPH0532807Y2 (ja
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 filed Critical
Priority to JP1986170937U priority Critical patent/JPH0532807Y2/ja
Publication of JPS6276313U publication Critical patent/JPS6276313U/ja
Application granted granted Critical
Publication of JPH0532807Y2 publication Critical patent/JPH0532807Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G02B15/163—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 having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group
    • G02B15/167—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 having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses
    • G02B15/173—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 having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses arranged +-+
    • 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
    • G02B15/145—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 five groups only
    • G02B15/1451—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 five groups only the first group being positive

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Lenses (AREA)

Description

【図面の簡単な説明】
第１図、第２図は各々本考案の実施例１、実施
例２の光学的配置とズーミングによるズーム軌跡
の説明図、第３図、第４図は各々本考案の数値実
施例１、数値実施例２のレンズ断面図、第５図、
第６図は数値実施例１の第７図、第８図は数値実
施例２の無限遠物点と像面より３ｍの近距離物点
に対する諸収差図であり、第９図、第１０図は各
々本考案の実施例３、実施例４の光学的配置とズ
ーミングによるズーム軌跡の説明図、第１１図、
第１２図は各々本考案の数値実施例３、数値実施
例４のレンズ断面図、第１３図は数値実施例３の
、第１４図は数値実施例４の無限遠物点と近距離
物点に対する諸収差図である。図中ａ，ｂ，ｃは
広角端、中間、望遠端でのズーム位置を示し、Ｍ
はメリデイオナル像面、Ｓはサジタル像面を示す
。

Claims (1)

  1. 【実用新案登録請求の範囲】 像点位置を一定に保ちつつ全系の焦点距離を変
    化させるために光軸上移動する少なくとも２つの
    レンズ群を有するズームレンズにおいて、前記レ
    ンズ群のいずれか一方若しくは両方の後方にズー
    ミング操作と連動させて一体的に移動する複数個
    のレンズ群よりなる複合レンズ群Ｆを配置して前
    記複合レンズ群Ｆの一部のレンズ群を移動させて
    フオーカシングを行うもので、前記複合レンズ群
    Ｆの焦点距離をｆＦ、望遠端のズーム位置におけ
    る全系の焦点距離をｆＴとするとき −１３ｆｔ＜１ｆＦ＜１３ｆｔ なる条件を満足することを特徴とするズームレン
    ズ。
JP1986170937U 1986-11-06 1986-11-06 Expired - Lifetime JPH0532807Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1986170937U JPH0532807Y2 (ja) 1986-11-06 1986-11-06

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1986170937U JPH0532807Y2 (ja) 1986-11-06 1986-11-06

Publications (2)

Publication Number Publication Date
JPS6276313U true JPS6276313U (ja) 1987-05-15
JPH0532807Y2 JPH0532807Y2 (ja) 1993-08-23

Family

ID=31106111

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1986170937U Expired - Lifetime JPH0532807Y2 (ja) 1986-11-06 1986-11-06

Country Status (1)

Country Link
JP (1) JPH0532807Y2 (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007212926A (ja) * 2006-02-13 2007-08-23 Sony Corp 可変焦点距離レンズ系及び撮像装置
JP2009115874A (ja) * 2007-11-02 2009-05-28 Nikon Corp ズームレンズ及びこのズームレンズを備えた光学機器
JP2013125213A (ja) * 2011-12-15 2013-06-24 Olympus Imaging Corp インナーフォーカスレンズ系及びそれを備えた撮像装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5532037A (en) * 1978-08-29 1980-03-06 Nippon Kogaku Kk <Nikon> Zoom lens system for near distance

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5532037A (en) * 1978-08-29 1980-03-06 Nippon Kogaku Kk <Nikon> Zoom lens system for near distance

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007212926A (ja) * 2006-02-13 2007-08-23 Sony Corp 可変焦点距離レンズ系及び撮像装置
JP2009115874A (ja) * 2007-11-02 2009-05-28 Nikon Corp ズームレンズ及びこのズームレンズを備えた光学機器
JP2013125213A (ja) * 2011-12-15 2013-06-24 Olympus Imaging Corp インナーフォーカスレンズ系及びそれを備えた撮像装置

Also Published As

Publication number Publication date
JPH0532807Y2 (ja) 1993-08-23

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