JPS6155094B2 - - Google Patents

Info

Publication number
JPS6155094B2
JPS6155094B2 JP56047165A JP4716581A JPS6155094B2 JP S6155094 B2 JPS6155094 B2 JP S6155094B2 JP 56047165 A JP56047165 A JP 56047165A JP 4716581 A JP4716581 A JP 4716581A JP S6155094 B2 JPS6155094 B2 JP S6155094B2
Authority
JP
Japan
Prior art keywords
lens
lens group
focal length
principal point
negative
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
Application number
JP56047165A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57163213A (en
Inventor
Makoto Sakano
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
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 Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP56047165A priority Critical patent/JPS57163213A/ja
Publication of JPS57163213A publication Critical patent/JPS57163213A/ja
Publication of JPS6155094B2 publication Critical patent/JPS6155094B2/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
    • G02B15/144—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 four groups only
    • G02B15/1445—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 four groups only the first group being negative
    • G02B15/144511—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 four groups only the first group being negative 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
    • G02B15/16—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
    • G02B15/177—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 negative front lens or group of lenses

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Lenses (AREA)
JP56047165A 1981-04-01 1981-04-01 Zoom lens of high variable magnification ratio having fixed lens group Granted JPS57163213A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56047165A JPS57163213A (en) 1981-04-01 1981-04-01 Zoom lens of high variable magnification ratio having fixed lens group

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56047165A JPS57163213A (en) 1981-04-01 1981-04-01 Zoom lens of high variable magnification ratio having fixed lens group

Publications (2)

Publication Number Publication Date
JPS57163213A JPS57163213A (en) 1982-10-07
JPS6155094B2 true JPS6155094B2 (US07534539-20090519-C00280.png) 1986-11-26

Family

ID=12767452

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56047165A Granted JPS57163213A (en) 1981-04-01 1981-04-01 Zoom lens of high variable magnification ratio having fixed lens group

Country Status (1)

Country Link
JP (1) JPS57163213A (US07534539-20090519-C00280.png)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0426469Y2 (US07534539-20090519-C00280.png) * 1987-05-29 1992-06-25

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5895315A (ja) * 1981-11-30 1983-06-06 Minolta Camera Co Ltd 広角域を含む高変倍率ズ−ムレンズ系
JP2778232B2 (ja) * 1990-09-07 1998-07-23 キヤノン株式会社 広角ズームレンズ
JP2808905B2 (ja) * 1991-02-19 1998-10-08 キヤノン株式会社 ズームレンズ
US5576890A (en) * 1992-02-28 1996-11-19 Canon Kabushiki Kaisha Zoom lens
US5691851A (en) * 1993-07-14 1997-11-25 Canon Kabushiki Kaisha Zoom lens
US5710669A (en) * 1994-03-17 1998-01-20 Canon Kabushiki Kaisha Wide-angle zoom lens
JP3576679B2 (ja) * 1996-01-25 2004-10-13 キヤノン株式会社 ズームレンズ
US6191896B1 (en) 1997-09-04 2001-02-20 Canon Kabushiki Kaisha Zoom lens and optical apparatus having the same
US6285509B1 (en) 1997-12-25 2001-09-04 Canon Kabushiki Kaisha Zoom lens and display apparatus having the same
JP3847506B2 (ja) * 1999-12-21 2006-11-22 オリンパス株式会社 ズームレンズ

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2704487A (en) * 1952-07-22 1955-03-22 Optical system of variable focal length
JPS5334539A (en) * 1976-09-13 1978-03-31 Tokina Optical Wide angle high zoom ratio zoom system
JPS5514403A (en) * 1978-07-14 1980-01-31 Hitachi Ltd Frost sensor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2704487A (en) * 1952-07-22 1955-03-22 Optical system of variable focal length
JPS5334539A (en) * 1976-09-13 1978-03-31 Tokina Optical Wide angle high zoom ratio zoom system
JPS5514403A (en) * 1978-07-14 1980-01-31 Hitachi Ltd Frost sensor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0426469Y2 (US07534539-20090519-C00280.png) * 1987-05-29 1992-06-25

Also Published As

Publication number Publication date
JPS57163213A (en) 1982-10-07

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