JPS575012A - Four component zoom lens system - Google Patents

Four component zoom lens system

Info

Publication number
JPS575012A
JPS575012A JP7993280A JP7993280A JPS575012A JP S575012 A JPS575012 A JP S575012A JP 7993280 A JP7993280 A JP 7993280A JP 7993280 A JP7993280 A JP 7993280A JP S575012 A JPS575012 A JP S575012A
Authority
JP
Japan
Prior art keywords
group
lens system
refracting power
zooming
positive refracting
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.)
Pending
Application number
JP7993280A
Other languages
Japanese (ja)
Inventor
Hisayuki Masumoto
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 JP7993280A priority Critical patent/JPS575012A/en
Priority to US06/270,150 priority patent/US4634236A/en
Publication of JPS575012A publication Critical patent/JPS575012A/en
Pending 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
    • G02B15/1441—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 positive
    • G02B15/144113—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 positive arranged +-++

Landscapes

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

Abstract

PURPOSE:To make a high variable magnification zoom lens system including a wide angle region high in performance and compact by performing zooming by four elements of positive refracting power precedence type, and further moving the 4th lens group which moves during zooming. CONSTITUTION:The lens system is constituted of the 1st group I of positive refracting power, the 2nd group II of negative refracting power, and the 3rd group III and the 4th group IV of positive refracting power which are movable in the optical axis direction, successively from object side. Zooming of high variable magnifications including a wide angle region is accomplished by cooperatively moving these lens groups I-IV in the optical axis direction. Focusing is accomplished by further moving the 4th group IV which moves during the zooming. The focal length f1 of each group and the longest focal length fL of the entire system are set in the relations of the equations (1)-(3), whereby the degradation in aberrations is prevented and the lens system is made compact.
JP7993280A 1980-06-12 1980-06-12 Four component zoom lens system Pending JPS575012A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP7993280A JPS575012A (en) 1980-06-12 1980-06-12 Four component zoom lens system
US06/270,150 US4634236A (en) 1980-06-12 1981-06-02 Compact zoom lens system of a relatively high zoom ratio capable of providing a wide field angle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7993280A JPS575012A (en) 1980-06-12 1980-06-12 Four component zoom lens system

Publications (1)

Publication Number Publication Date
JPS575012A true JPS575012A (en) 1982-01-11

Family

ID=13704080

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7993280A Pending JPS575012A (en) 1980-06-12 1980-06-12 Four component zoom lens system

Country Status (1)

Country Link
JP (1) JPS575012A (en)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58179810A (en) * 1982-04-15 1983-10-21 Olympus Optical Co Ltd Focusing system of zoom lens
JPS58202416A (en) * 1982-05-19 1983-11-25 Minolta Camera Co Ltd Zoom lens system of high variable magnification ratio containing wide angle area
JPH0312621A (en) * 1989-06-09 1991-01-21 Canon Inc Rear focus type zoom lens
JPH0312622A (en) * 1989-06-09 1991-01-21 Canon Inc Rear focus type zoom lens
JPH0414006A (en) * 1990-05-08 1992-01-20 Canon Inc Rear focus type zoom lens
JPH04158326A (en) * 1990-10-22 1992-06-01 Canon Inc Zoom lens
JPH04190211A (en) * 1990-11-22 1992-07-08 Olympus Optical Co Ltd Zoom lens
US5572277A (en) * 1993-06-15 1996-11-05 Olympus Optical Co., Ltd. Zoom lens
US5663835A (en) * 1994-07-29 1997-09-02 Nikon Corporation Inner focus zoom lens
US5668668A (en) * 1995-03-08 1997-09-16 Nikon Corporation Zoom lens with five lens groups
US5715097A (en) * 1995-06-01 1998-02-03 Nikon Corporation Zoom lens
US5859729A (en) * 1996-01-06 1999-01-12 Canon Kabushiki Kaisha Zoom lens device with four lens unit
JP2001350093A (en) * 2000-04-07 2001-12-21 Minolta Co Ltd Image pickup lens device
US6950247B2 (en) 2001-08-03 2005-09-27 Canon Kabushiki Kaisha Zoom lens and image pickup apparatus
US7061686B2 (en) 2002-12-27 2006-06-13 Nikon Corporation Variable focal length lens system
EP1837693A1 (en) * 2006-03-23 2007-09-26 Nikon Corporation Retrofocus lens system and image-taking device
US7283310B2 (en) 2004-04-30 2007-10-16 Olympus Corporation Zoom lens, and imaging system incorporating it
JP2008032923A (en) * 2006-07-27 2008-02-14 Nikon Corp Highly variable zoom lens and optical apparatus having the same
JP2009128606A (en) * 2007-11-22 2009-06-11 Nikon Corp Zoom lens, optical equipment with mounted zoom lens and imaging method
JP2009276794A (en) * 2009-08-26 2009-11-26 Canon Inc Zoom lens and photographing device using the same
US7933073B2 (en) 2007-06-29 2011-04-26 Elmo Company, Limited Zoom lens
JP2014157225A (en) * 2013-02-15 2014-08-28 Canon Inc Zoom lens and imaging apparatus including the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5430855A (en) * 1977-07-30 1979-03-07 Asahi Optical Co Ltd Wide angle zoom lens system having high variable magnification

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5430855A (en) * 1977-07-30 1979-03-07 Asahi Optical Co Ltd Wide angle zoom lens system having high variable magnification

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58179810A (en) * 1982-04-15 1983-10-21 Olympus Optical Co Ltd Focusing system of zoom lens
JPH0529886B2 (en) * 1982-04-15 1993-05-06 Olympus Optical Co
JPS58202416A (en) * 1982-05-19 1983-11-25 Minolta Camera Co Ltd Zoom lens system of high variable magnification ratio containing wide angle area
JPH0529885B2 (en) * 1982-05-19 1993-05-06 Minolta Camera Kk
JPH0312621A (en) * 1989-06-09 1991-01-21 Canon Inc Rear focus type zoom lens
JPH0312622A (en) * 1989-06-09 1991-01-21 Canon Inc Rear focus type zoom lens
JPH0414006A (en) * 1990-05-08 1992-01-20 Canon Inc Rear focus type zoom lens
JPH04158326A (en) * 1990-10-22 1992-06-01 Canon Inc Zoom lens
JPH04190211A (en) * 1990-11-22 1992-07-08 Olympus Optical Co Ltd Zoom lens
US5572277A (en) * 1993-06-15 1996-11-05 Olympus Optical Co., Ltd. Zoom lens
US5663835A (en) * 1994-07-29 1997-09-02 Nikon Corporation Inner focus zoom lens
US5668668A (en) * 1995-03-08 1997-09-16 Nikon Corporation Zoom lens with five lens groups
US5715097A (en) * 1995-06-01 1998-02-03 Nikon Corporation Zoom lens
US5859729A (en) * 1996-01-06 1999-01-12 Canon Kabushiki Kaisha Zoom lens device with four lens unit
JP2001350093A (en) * 2000-04-07 2001-12-21 Minolta Co Ltd Image pickup lens device
US6950247B2 (en) 2001-08-03 2005-09-27 Canon Kabushiki Kaisha Zoom lens and image pickup apparatus
US7061686B2 (en) 2002-12-27 2006-06-13 Nikon Corporation Variable focal length lens system
US7283310B2 (en) 2004-04-30 2007-10-16 Olympus Corporation Zoom lens, and imaging system incorporating it
US7656591B2 (en) 2006-03-23 2010-02-02 Nikon Corporation Retrofocus lens system and image-taking device
EP1837693A1 (en) * 2006-03-23 2007-09-26 Nikon Corporation Retrofocus lens system and image-taking device
EP3242151A1 (en) * 2006-03-23 2017-11-08 Nikon Corporation Retrofocus lens system and image-taking device
JP2008032923A (en) * 2006-07-27 2008-02-14 Nikon Corp Highly variable zoom lens and optical apparatus having the same
US7933073B2 (en) 2007-06-29 2011-04-26 Elmo Company, Limited Zoom lens
JP2009128606A (en) * 2007-11-22 2009-06-11 Nikon Corp Zoom lens, optical equipment with mounted zoom lens and imaging method
JP2009276794A (en) * 2009-08-26 2009-11-26 Canon Inc Zoom lens and photographing device using the same
JP4574728B2 (en) * 2009-08-26 2010-11-04 キヤノン株式会社 Zoom lens and photographing apparatus using the same
JP2014157225A (en) * 2013-02-15 2014-08-28 Canon Inc Zoom lens and imaging apparatus including the same

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