JPH0536765B2 - - Google Patents

Info

Publication number
JPH0536765B2
JPH0536765B2 JP55129838A JP12983880A JPH0536765B2 JP H0536765 B2 JPH0536765 B2 JP H0536765B2 JP 55129838 A JP55129838 A JP 55129838A JP 12983880 A JP12983880 A JP 12983880A JP H0536765 B2 JPH0536765 B2 JP H0536765B2
Authority
JP
Japan
Prior art keywords
lens
lens group
positive
negative
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 - Lifetime
Application number
JP55129838A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5753718A (en
Inventor
Hisayuki Masumoto
Shuji Ogino
Toshihide Doi
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.)
Minolta Co Ltd
Original Assignee
Minolta 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 Minolta Co Ltd filed Critical Minolta Co Ltd
Priority to JP55129838A priority Critical patent/JPS5753718A/ja
Publication of JPS5753718A publication Critical patent/JPS5753718A/ja
Publication of JPH0536765B2 publication Critical patent/JPH0536765B2/ja
Granted 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
    • G02B15/142—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 two groups only
    • G02B15/1421—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 two groups only the first group being positive

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
JP55129838A 1980-09-17 1980-09-17 Zoom lens system Granted JPS5753718A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55129838A JPS5753718A (en) 1980-09-17 1980-09-17 Zoom lens system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55129838A JPS5753718A (en) 1980-09-17 1980-09-17 Zoom lens system

Publications (2)

Publication Number Publication Date
JPS5753718A JPS5753718A (en) 1982-03-30
JPH0536765B2 true JPH0536765B2 (de) 1993-05-31

Family

ID=15019477

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55129838A Granted JPS5753718A (en) 1980-09-17 1980-09-17 Zoom lens system

Country Status (1)

Country Link
JP (1) JPS5753718A (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58178315A (ja) * 1982-04-14 1983-10-19 Hitachi Ltd プラスチツクレンズを用いたズ−ムレンズ
JPH0617938B2 (ja) * 1982-08-16 1994-03-09 オリンパス光学工業株式会社 ズームレンズ
JPS5979212A (ja) * 1982-10-29 1984-05-08 Canon Inc 合成樹脂材料を用いたズ−ムレンズ
JPS60107013A (ja) * 1983-11-16 1985-06-12 Hitachi Ltd ズ−ムレンズ
US5579172A (en) * 1993-07-19 1996-11-26 Nikon Corporation Zoom lens system
JP3369689B2 (ja) * 1993-12-09 2003-01-20 オリンパス光学工業株式会社 ズームレンズ
US6038081A (en) * 1997-05-09 2000-03-14 Konica Corporation Zoom lens having plastic lens in first lens group
JP4967288B2 (ja) * 2004-09-30 2012-07-04 株式会社ニコン 共通ズーム光学系、ズームレンズ、及びレンズシステム

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5411333A (en) * 1977-06-20 1979-01-27 Toyobo Co Ltd Production of protein fibers

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5411333A (en) * 1977-06-20 1979-01-27 Toyobo Co Ltd Production of protein fibers

Also Published As

Publication number Publication date
JPS5753718A (en) 1982-03-30

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