JP3723643B2 - 高変倍ズームレンズ系 - Google Patents

高変倍ズームレンズ系 Download PDF

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Publication number
JP3723643B2
JP3723643B2 JP21265296A JP21265296A JP3723643B2 JP 3723643 B2 JP3723643 B2 JP 3723643B2 JP 21265296 A JP21265296 A JP 21265296A JP 21265296 A JP21265296 A JP 21265296A JP 3723643 B2 JP3723643 B2 JP 3723643B2
Authority
JP
Japan
Prior art keywords
lens group
lens
focal length
length end
zoom
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
JP21265296A
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English (en)
Japanese (ja)
Other versions
JPH1054937A (ja
JPH1054937A5 (enExample
Inventor
隆 榎本
孝之 伊藤
Original Assignee
ペンタックス株式会社
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 ペンタックス株式会社 filed Critical ペンタックス株式会社
Priority to JP21265296A priority Critical patent/JP3723643B2/ja
Priority to US08/907,411 priority patent/US5815322A/en
Priority to CA002212687A priority patent/CA2212687C/en
Priority to DE19734921A priority patent/DE19734921B4/de
Priority to GB9717137A priority patent/GB2316500B/en
Publication of JPH1054937A publication Critical patent/JPH1054937A/ja
Publication of JPH1054937A5 publication Critical patent/JPH1054937A5/ja
Application granted granted Critical
Publication of JP3723643B2 publication Critical patent/JP3723643B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • G02B15/17—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 +--

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
JP21265296A 1996-08-12 1996-08-12 高変倍ズームレンズ系 Expired - Fee Related JP3723643B2 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP21265296A JP3723643B2 (ja) 1996-08-12 1996-08-12 高変倍ズームレンズ系
US08/907,411 US5815322A (en) 1996-08-12 1997-08-07 Zoom lens system having high zoom ratio
CA002212687A CA2212687C (en) 1996-08-12 1997-08-08 Zoom lens system having high zoom ratio
DE19734921A DE19734921B4 (de) 1996-08-12 1997-08-12 Variolinsensystem mit hohem Brennweitenverhältnis
GB9717137A GB2316500B (en) 1996-08-12 1997-08-12 Four group zoom lens system having high zoom ratio

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21265296A JP3723643B2 (ja) 1996-08-12 1996-08-12 高変倍ズームレンズ系

Publications (3)

Publication Number Publication Date
JPH1054937A JPH1054937A (ja) 1998-02-24
JPH1054937A5 JPH1054937A5 (enExample) 2004-07-22
JP3723643B2 true JP3723643B2 (ja) 2005-12-07

Family

ID=16626178

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21265296A Expired - Fee Related JP3723643B2 (ja) 1996-08-12 1996-08-12 高変倍ズームレンズ系

Country Status (5)

Country Link
US (1) US5815322A (enExample)
JP (1) JP3723643B2 (enExample)
CA (1) CA2212687C (enExample)
DE (1) DE19734921B4 (enExample)
GB (1) GB2316500B (enExample)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103336354B (zh) * 2013-07-03 2015-06-17 福建福光数码科技有限公司 小型化、强光力、大倍比手动三可变摄像镜头
JP6283986B2 (ja) * 2013-08-30 2018-02-28 株式会社リコー ズームレンズ、撮像装置および監視用ビデオカメラ
JP6270104B2 (ja) * 2013-08-28 2018-01-31 株式会社リコー ズームレンズ、撮像装置および監視用ビデオカメラ
US9459434B2 (en) 2013-08-28 2016-10-04 Ricoh Company, Ltd. Zoom lens and imaging apparatus
JP6252103B2 (ja) * 2013-10-25 2017-12-27 株式会社リコー ズームレンズ及びこのズームレンズを用いた撮像装置
JP6307834B2 (ja) * 2013-10-25 2018-04-11 株式会社リコー ズームレンズ及びこのズームレンズを用いた撮像装置
US9470881B2 (en) 2013-10-25 2016-10-18 Ricoh Company, Ltd. Zoom lens and imaging device using zoom lens
JP6354196B2 (ja) * 2014-02-19 2018-07-11 株式会社リコー ズームレンズおよびこのズームレンズを用いた撮像装置
JP6308425B2 (ja) 2014-03-12 2018-04-11 株式会社リコー ズームレンズおよびカメラ
CN105676434B (zh) * 2016-04-27 2018-08-21 佛山华国光学器材有限公司 一种透雾60x大变倍光学系统

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL90813C (enExample) * 1950-07-18
GB941754A (en) * 1961-12-20 1963-11-13 Isco Optische Werke Gmbh Optical objectives
GB1064323A (en) * 1962-09-14 1967-04-05 Rank Precision Ind Ltd Improvements in or relating to optical objectives of variable equivalent focal length
GB1066501A (en) * 1962-10-04 1967-04-26 Rank Precision Ind Ltd Improvements in or relating to optical objectives of variable equivalent focal length
GB1109913A (en) * 1965-07-26 1968-04-18 Rank Organisation Ltd Improvements in or relating to optical objectives of variable equivalent focal length
DE1497590C3 (de) * 1966-04-05 1974-10-17 Jos. Schneider & Co, Optische Werke, 6550 Bad Kreuznach Lichtstarkes Objektiv mit veränderbarer Brennweite
GB1190873A (en) * 1967-06-30 1970-05-06 Schneider Co Optische Werke Improvements relating to Zoom Lenses
DE2032573A1 (de) * 1970-07-01 1972-01-05 Jos. Schneider & Co, Optische Werke, 6550 Bad Kreuznach Lichtstarkes Objektiv mit veränderbarer Brennweite
DE2164937A1 (de) * 1971-12-28 1973-07-05 Schneider Co Optische Werke Lichtstarkes objektiv mit veraenderbarer brennweite
DD106718A5 (enExample) * 1972-09-14 1974-06-20
JPS53979Y2 (enExample) * 1973-04-13 1978-01-12
JPS512439A (en) * 1974-06-17 1976-01-10 Canon Kk Makurozuumurenzukei
US4080047A (en) * 1975-04-03 1978-03-21 Minolta Camera Kabushiki Kaisha Lens system capable of wide range zooming and macrophotography
JPS57135912A (en) * 1981-02-16 1982-08-21 Asahi Optical Co Ltd Zoom lens
JPS58108511A (ja) * 1981-12-22 1983-06-28 Asahi Optical Co Ltd ビデオカメラ用ズ−ムレンズ
US5221995A (en) * 1989-08-12 1993-06-22 Asahi Kogaku Kogyo K.K. Zoom lens system
US5189557A (en) * 1990-11-20 1993-02-23 Canon Kabushiki Kaisha High variable magnification range zoom lens
JP3174357B2 (ja) * 1991-08-23 2001-06-11 旭光学工業株式会社 ズームレンズ
JP3167069B2 (ja) * 1993-11-30 2001-05-14 キヤノン株式会社 ズームレンズ

Also Published As

Publication number Publication date
GB2316500B (en) 2000-10-11
JPH1054937A (ja) 1998-02-24
CA2212687C (en) 2001-10-02
DE19734921B4 (de) 2006-07-13
CA2212687A1 (en) 1998-02-12
GB2316500A (en) 1998-02-25
GB9717137D0 (en) 1997-10-22
DE19734921A1 (de) 1998-02-19
US5815322A (en) 1998-09-29

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