JPH0514247B2 - - Google Patents

Info

Publication number
JPH0514247B2
JPH0514247B2 JP57011090A JP1109082A JPH0514247B2 JP H0514247 B2 JPH0514247 B2 JP H0514247B2 JP 57011090 A JP57011090 A JP 57011090A JP 1109082 A JP1109082 A JP 1109082A JP H0514247 B2 JPH0514247 B2 JP H0514247B2
Authority
JP
Japan
Prior art keywords
group
lens
focal length
refractive power
positive
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
JP57011090A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58127908A (ja
Inventor
Hisayuki Masumoto
Shuji Ogino
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 JP57011090A priority Critical patent/JPS58127908A/ja
Priority to US06/366,673 priority patent/US4494828A/en
Publication of JPS58127908A publication Critical patent/JPS58127908A/ja
Publication of JPH0514247B2 publication Critical patent/JPH0514247B2/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
    • G02B15/143—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
    • G02B15/1431—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 the first group being positive
    • G02B15/143105—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 the first group being positive arranged +-+

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
JP57011090A 1981-04-09 1982-01-26 広角域を含む高変倍率ズ−ムレンズ系 Granted JPS58127908A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP57011090A JPS58127908A (ja) 1982-01-26 1982-01-26 広角域を含む高変倍率ズ−ムレンズ系
US06/366,673 US4494828A (en) 1981-04-09 1982-04-08 Zoom lens system of relatively high zoom ratio ranging to wide angle photography

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57011090A JPS58127908A (ja) 1982-01-26 1982-01-26 広角域を含む高変倍率ズ−ムレンズ系

Publications (2)

Publication Number Publication Date
JPS58127908A JPS58127908A (ja) 1983-07-30
JPH0514247B2 true JPH0514247B2 (en, 2012) 1993-02-24

Family

ID=11768282

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57011090A Granted JPS58127908A (ja) 1981-04-09 1982-01-26 広角域を含む高変倍率ズ−ムレンズ系

Country Status (1)

Country Link
JP (1) JPS58127908A (en, 2012)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58150926A (ja) * 1982-03-04 1983-09-07 Canon Inc ズ−ムレンズ
JPH073506B2 (ja) * 1985-08-17 1995-01-18 キヤノン株式会社 ズ−ムレンズ
JPH071334B2 (ja) * 1985-05-15 1995-01-11 オリンパス光学工業株式会社 ズ−ムレンズ
US5568321A (en) * 1990-11-16 1996-10-22 Canon Kabushiki Kaisha Zoom lens
US5694253A (en) * 1995-02-02 1997-12-02 Nikon Corporation High zoom ratio zoom lens
JP4994796B2 (ja) * 2006-11-14 2012-08-08 キヤノン株式会社 ズームレンズ及びそれを有する撮像装置
JP5920926B2 (ja) * 2012-12-26 2016-05-18 株式会社タムロン ズームレンズ
JP6812101B2 (ja) * 2015-12-18 2021-01-13 株式会社タムロン 光学系及び撮像装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2936677C2 (de) * 1978-09-11 1986-10-02 Vivitar Corp., Santa Monica, Calif. Vario-Objektiv
US4256381A (en) * 1980-01-31 1981-03-17 Vivitar Corporation Zoom lens
JPS57161804A (en) * 1981-03-31 1982-10-05 Tokinaa Kogaku Kk Zoom lens system

Also Published As

Publication number Publication date
JPS58127908A (ja) 1983-07-30

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