JPS6120846B2 - - Google Patents

Info

Publication number
JPS6120846B2
JPS6120846B2 JP56025073A JP2507381A JPS6120846B2 JP S6120846 B2 JPS6120846 B2 JP S6120846B2 JP 56025073 A JP56025073 A JP 56025073A JP 2507381 A JP2507381 A JP 2507381A JP S6120846 B2 JPS6120846 B2 JP S6120846B2
Authority
JP
Japan
Prior art keywords
group
negative
lens
focal length
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
JP56025073A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57138612A (en
Inventor
Yoshinori Hamanishi
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.)
Nikon Corp
Original Assignee
Nippon Kogaku KK
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 Nippon Kogaku KK filed Critical Nippon Kogaku KK
Priority to JP56025073A priority Critical patent/JPS57138612A/ja
Priority to US06/346,995 priority patent/US4468096A/en
Priority to DE19823206362 priority patent/DE3206362A1/de
Publication of JPS57138612A publication Critical patent/JPS57138612A/ja
Publication of JPS6120846B2 publication Critical patent/JPS6120846B2/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
    • G02B15/144—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)
JP56025073A 1981-02-23 1981-02-23 Telephotographic zoom lens consisting of four groups Granted JPS57138612A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP56025073A JPS57138612A (en) 1981-02-23 1981-02-23 Telephotographic zoom lens consisting of four groups
US06/346,995 US4468096A (en) 1981-02-23 1982-02-08 Four-group telephoto zoom lens
DE19823206362 DE3206362A1 (de) 1981-02-23 1982-02-22 Viergruppiges tele-zoomobjektiv

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56025073A JPS57138612A (en) 1981-02-23 1981-02-23 Telephotographic zoom lens consisting of four groups

Publications (2)

Publication Number Publication Date
JPS57138612A JPS57138612A (en) 1982-08-27
JPS6120846B2 true JPS6120846B2 (en, 2012) 1986-05-24

Family

ID=12155745

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56025073A Granted JPS57138612A (en) 1981-02-23 1981-02-23 Telephotographic zoom lens consisting of four groups

Country Status (3)

Country Link
US (1) US4468096A (en, 2012)
JP (1) JPS57138612A (en, 2012)
DE (1) DE3206362A1 (en, 2012)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59180518A (ja) * 1983-03-30 1984-10-13 Nippon Kogaku Kk <Nikon> ４群構成望遠ズ−ムレンズ
JPS59188611A (ja) * 1983-04-09 1984-10-26 Olympus Optical Co Ltd ズ−ムレンズ
JPH05323192A (ja) * 1992-05-26 1993-12-07 Fuji Photo Optical Co Ltd 可変焦点距離レンズ
JP4903418B2 (ja) 2005-11-18 2012-03-28 イーストマン コダック カンパニー ズームレンズ
JP6670262B2 (ja) * 2017-02-24 2020-03-18 富士フイルム株式会社 ズームレンズおよび撮像装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1109913A (en) * 1965-07-26 1968-04-18 Rank Organisation Ltd Improvements in or relating to optical objectives of variable equivalent focal length
SU464882A1 (ru) * 1973-05-21 1975-03-25 Предприятие П/Я Р-6681 Объектив с переменным фокусным рассто нием
JPS5541402B2 (en, 2012) * 1974-02-04 1980-10-24
JPS53131852A (en) * 1977-04-22 1978-11-17 Nippon Chemical Ind Tele zoom lens
US4230397A (en) * 1978-09-21 1980-10-28 Bell & Howell Company Large aperture extended range zoom lens

Also Published As

Publication number Publication date
US4468096A (en) 1984-08-28
DE3206362A1 (de) 1982-12-09
JPS57138612A (en) 1982-08-27

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