DE3018481C2 - Varioobjektiv - Google Patents

Varioobjektiv

Info

Publication number
DE3018481C2
DE3018481C2 DE3018481A DE3018481A DE3018481C2 DE 3018481 C2 DE3018481 C2 DE 3018481C2 DE 3018481 A DE3018481 A DE 3018481A DE 3018481 A DE3018481 A DE 3018481A DE 3018481 C2 DE3018481 C2 DE 3018481C2
Authority
DE
Germany
Prior art keywords
lens
lens group
lenses
group
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
Application number
DE3018481A
Other languages
German (de)
English (en)
Other versions
DE3018481A1 (de
Inventor
Ryota Kawagoe Saitama Ogawa
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.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo 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 Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Publication of DE3018481A1 publication Critical patent/DE3018481A1/de
Application granted granted Critical
Publication of DE3018481C2 publication Critical patent/DE3018481C2/de
Expired 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)
DE3018481A 1979-05-16 1980-05-14 Varioobjektiv Expired DE3018481C2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6004079A JPS55156912A (en) 1979-05-16 1979-05-16 High variable power zoom lens including wide angle

Publications (2)

Publication Number Publication Date
DE3018481A1 DE3018481A1 (de) 1980-11-20
DE3018481C2 true DE3018481C2 (de) 1985-03-14

Family

ID=13130556

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3018481A Expired DE3018481C2 (de) 1979-05-16 1980-05-14 Varioobjektiv

Country Status (4)

Country Link
US (1) US4348082A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS55156912A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3018481C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB2051400B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57172310A (en) * 1981-04-17 1982-10-23 Canon Inc Zoom lens
JPS57186707A (en) * 1981-05-13 1982-11-17 Canon Inc Telephoto zoom lens
JPS57192917A (en) * 1981-05-25 1982-11-27 Konishiroku Photo Ind Co Ltd Compact zoom lens
JPS5878114A (ja) * 1981-11-04 1983-05-11 Nippon Kogaku Kk <Nikon> 広画角を含むズ−ムレンズ
JPS5888717A (ja) * 1981-11-24 1983-05-26 Olympus Optical Co Ltd ズ−ムレンズ
JPS5937518A (ja) * 1982-08-25 1984-03-01 Asahi Optical Co Ltd 広角を包括する高変倍比ズ−ムレンズ
JPS5952213A (ja) * 1982-09-18 1984-03-26 Canon Inc 可動絞りを有するズ−ムレンズ
JPS60225110A (ja) * 1984-04-23 1985-11-09 Sigma:Kk 望遠ズ−ムレンズ
US4836662A (en) * 1985-04-19 1989-06-06 Olympus Optical Co., Ltd. Telephoto zoom lens system
JPH071335B2 (ja) * 1985-05-31 1995-01-11 オリンパス光学工業株式会社 望遠ズ−ムレンズ
JPS61284721A (ja) * 1985-06-12 1986-12-15 Tokinaa Kogaku Kk 望遠ズ−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
US4978204A (en) * 1988-09-08 1990-12-18 Asahi Kogaku Kogyo Kabushik Kaisha High zoom-ratio zoom lens system for use in a compact camera
DE3943741C2 (de) * 1988-09-08 1996-02-22 Asahi Optical Co Ltd Varioobjektiv für eine Kamera
GB2230354B (en) * 1989-03-31 1993-09-15 Asahi Optical Co Ltd Zoom lens assembly
JPH0373907A (ja) * 1989-08-15 1991-03-28 Olympus Optical Co Ltd ズームレンズ
JP2756350B2 (ja) * 1990-06-22 1998-05-25 キヤノン株式会社 投影ズームレンズ
GB9226806D0 (en) * 1991-12-25 1993-02-17 Asahi Optical Co Ltd Zoom lens system
JP3394624B2 (ja) * 1995-02-17 2003-04-07 オリンパス光学工業株式会社 ズームレンズ
JP2000347102A (ja) * 1999-06-04 2000-12-15 Konica Corp ズームレンズ
DE19943015A1 (de) 1999-09-09 2001-03-15 Zeiss Carl Jena Gmbh Varioobjektiv
JP3569473B2 (ja) 1999-12-27 2004-09-22 ペンタックス株式会社 ズームレンズ系
US9201219B2 (en) * 2012-02-28 2015-12-01 Ricoh Imaging Company, Ltd. Close-distance correcting lens system
TWI507727B (zh) 2013-04-30 2015-11-11 Young Optics Inc 變焦鏡頭
WO2024187477A1 (zh) * 2023-03-16 2024-09-19 北京小米移动软件有限公司 光学系统、以及拍摄装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3549242A (en) * 1966-10-27 1970-12-22 Nippon Kogaku Kk Zooming lens of extremely high zooming ratio
AT333051B (de) * 1972-10-16 1976-11-10 Eumig Pankratisches objektiv
US4062621A (en) * 1975-10-28 1977-12-13 Bell & Howell Company Large aperture extended range zoom lens
US4298251A (en) * 1976-11-24 1981-11-03 Bell & Howell Company Dual macro zoom optical system
JPS5832684B2 (ja) * 1977-07-30 1983-07-14 旭光学工業株式会社 高変倍率を有する広角ズ−ムレンズ系

Also Published As

Publication number Publication date
JPS6217202B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1987-04-16
US4348082A (en) 1982-09-07
GB2051400A (en) 1981-01-14
JPS55156912A (en) 1980-12-06
DE3018481A1 (de) 1980-11-20
GB2051400B (en) 1983-08-24

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Legal Events

Date Code Title Description
OAP Request for examination filed
OD Request for examination
D2 Grant after examination
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee