JPH028282B2 - - Google Patents

Info

Publication number
JPH028282B2
JPH028282B2 JP56054672A JP5467281A JPH028282B2 JP H028282 B2 JPH028282 B2 JP H028282B2 JP 56054672 A JP56054672 A JP 56054672A JP 5467281 A JP5467281 A JP 5467281A JP H028282 B2 JPH028282 B2 JP H028282B2
Authority
JP
Japan
Prior art keywords
group
lens
focal length
groups
refractive power
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
JP56054672A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57169716A (en
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 JP56054672A priority Critical patent/JPS57169716A/ja
Priority to US06/366,673 priority patent/US4494828A/en
Publication of JPS57169716A publication Critical patent/JPS57169716A/ja
Publication of JPH028282B2 publication Critical patent/JPH028282B2/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)
JP56054672A 1981-04-09 1981-04-10 Zoom lens system of high variable magnification including wide angle region Granted JPS57169716A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP56054672A JPS57169716A (en) 1981-04-10 1981-04-10 Zoom lens system of high variable magnification including wide angle region
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
JP56054672A JPS57169716A (en) 1981-04-10 1981-04-10 Zoom lens system of high variable magnification including wide angle region

Publications (2)

Publication Number Publication Date
JPS57169716A JPS57169716A (en) 1982-10-19
JPH028282B2 true JPH028282B2 (hu) 1990-02-23

Family

ID=12977266

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56054672A Granted JPS57169716A (en) 1981-04-09 1981-04-10 Zoom lens system of high variable magnification including wide angle region

Country Status (1)

Country Link
JP (1) JPS57169716A (hu)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58116509A (ja) * 1981-12-29 1983-07-11 Canon Inc ズ−ムレンズ
JPS6014213A (ja) * 1983-07-06 1985-01-24 Nippon Kogaku Kk <Nikon> 広画角を含む高変倍率ズ−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
US4917482A (en) * 1987-12-29 1990-04-17 Asahi Kogaku Kogyo Kabushiki Kaisha Compact zoom lens system capable of high zoom ratio and having coverage of a wide visual field
JPH0894933A (ja) * 1994-09-26 1996-04-12 Nikon Corp 高倍率ズームレンズ
US5737129A (en) * 1994-12-26 1998-04-07 Nikon Corporation Wide-angle zoom lens
JPH08220424A (ja) * 1995-02-10 1996-08-30 Nikon Corp 防振機能を備えたガウス型レンズ
JPH08234106A (ja) * 1995-02-23 1996-09-13 Nikon Corp ズームレンズ
JPH08248305A (ja) * 1995-03-10 1996-09-27 Nikon Corp 長焦点マイクロレンズ
JPH08278445A (ja) * 1995-04-04 1996-10-22 Nikon Corp 防振機能を備えたズームレンズ

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52146620A (en) * 1976-06-01 1977-12-06 Canon Inc Gauss type lens
JPS53134425A (en) * 1977-04-28 1978-11-24 Nippon Chemical Ind Large aperture ratio telescopic lens
JPS55111915A (en) * 1979-02-22 1980-08-29 Canon Inc Zoom lens
US4256381A (en) * 1980-01-31 1981-03-17 Vivitar Corporation Zoom lens
JPS57168209A (en) * 1981-04-09 1982-10-16 Minolta Camera Co Ltd Zoom lens system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52146620A (en) * 1976-06-01 1977-12-06 Canon Inc Gauss type lens
JPS53134425A (en) * 1977-04-28 1978-11-24 Nippon Chemical Ind Large aperture ratio telescopic lens
JPS55111915A (en) * 1979-02-22 1980-08-29 Canon Inc Zoom lens
US4256381A (en) * 1980-01-31 1981-03-17 Vivitar Corporation Zoom lens
JPS57168209A (en) * 1981-04-09 1982-10-16 Minolta Camera Co Ltd Zoom lens system

Also Published As

Publication number Publication date
JPS57169716A (en) 1982-10-19

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