JPH0125044B2 - - Google Patents

Info

Publication number
JPH0125044B2
JPH0125044B2 JP55154051A JP15405180A JPH0125044B2 JP H0125044 B2 JPH0125044 B2 JP H0125044B2 JP 55154051 A JP55154051 A JP 55154051A JP 15405180 A JP15405180 A JP 15405180A JP H0125044 B2 JPH0125044 B2 JP H0125044B2
Authority
JP
Japan
Prior art keywords
group
lens
focal length
lens group
focusing
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
JP55154051A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5778514A (en
Inventor
Hisayuki Masumoto
Masaichi Shimomura
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 JP55154051A priority Critical patent/JPS5778514A/ja
Priority to US06/318,144 priority patent/US4492437A/en
Publication of JPS5778514A publication Critical patent/JPS5778514A/ja
Publication of JPH0125044B2 publication Critical patent/JPH0125044B2/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
    • G02B15/16—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
    • 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
    • G02B15/143—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 three groups only

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Lenses (AREA)
JP55154051A 1980-11-04 1980-11-04 Zoom lens system Granted JPS5778514A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP55154051A JPS5778514A (en) 1980-11-04 1980-11-04 Zoom lens system
US06/318,144 US4492437A (en) 1980-11-04 1981-11-04 Zoom lens system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55154051A JPS5778514A (en) 1980-11-04 1980-11-04 Zoom lens system

Publications (2)

Publication Number Publication Date
JPS5778514A JPS5778514A (en) 1982-05-17
JPH0125044B2 true JPH0125044B2 (de) 1989-05-16

Family

ID=15575833

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55154051A Granted JPS5778514A (en) 1980-11-04 1980-11-04 Zoom lens system

Country Status (1)

Country Link
JP (1) JPS5778514A (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5913212A (ja) * 1982-07-14 1984-01-24 Canon Inc ズ−ムレンズ
JPS5955538U (ja) * 1982-10-05 1984-04-11 住友ベークライト株式会社 医療用複合チユ−ブ
JPS59129818A (ja) * 1983-01-18 1984-07-26 Canon Inc ズ−ムレンズのフオ−カス方法
JPH0629907B2 (ja) * 1985-08-22 1994-04-20 キヤノン株式会社 大口径比のズ−ムレンズ
CN104011578B (zh) * 2011-12-27 2016-03-09 富士胶片株式会社 变焦透镜以及摄像装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5427307B2 (de) * 1971-08-31 1979-09-08

Also Published As

Publication number Publication date
JPS5778514A (en) 1982-05-17

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