JPS6126047B2 - - Google Patents

Info

Publication number
JPS6126047B2
JPS6126047B2 JP56159043A JP15904381A JPS6126047B2 JP S6126047 B2 JPS6126047 B2 JP S6126047B2 JP 56159043 A JP56159043 A JP 56159043A JP 15904381 A JP15904381 A JP 15904381A JP S6126047 B2 JPS6126047 B2 JP S6126047B2
Authority
JP
Japan
Prior art keywords
lens
lens group
focal length
nio
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
JP56159043A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5859407A (ja
Inventor
Takayuki Ito
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
Priority to JP56159043A priority Critical patent/JPS5859407A/ja
Priority to US06/422,501 priority patent/US4468098A/en
Publication of JPS5859407A publication Critical patent/JPS5859407A/ja
Publication of JPS6126047B2 publication Critical patent/JPS6126047B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/64—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having more than six components
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
JP56159043A 1981-10-06 1981-10-06 コンパクトな望遠ズ−ムレンズ系 Granted JPS5859407A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP56159043A JPS5859407A (ja) 1981-10-06 1981-10-06 コンパクトな望遠ズ−ムレンズ系
US06/422,501 US4468098A (en) 1981-10-06 1982-09-23 Compact telephoto zoom lens system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56159043A JPS5859407A (ja) 1981-10-06 1981-10-06 コンパクトな望遠ズ−ムレンズ系

Publications (2)

Publication Number Publication Date
JPS5859407A JPS5859407A (ja) 1983-04-08
JPS6126047B2 true JPS6126047B2 (en, 2012) 1986-06-18

Family

ID=15684978

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56159043A Granted JPS5859407A (ja) 1981-10-06 1981-10-06 コンパクトな望遠ズ−ムレンズ系

Country Status (2)

Country Link
US (1) US4468098A (en, 2012)
JP (1) JPS5859407A (en, 2012)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59188611A (ja) * 1983-04-09 1984-10-26 Olympus Optical Co Ltd ズ−ムレンズ
JPS6060617A (ja) * 1983-09-14 1985-04-08 Asahi Optical Co Ltd 望遠ズ−ムレンズ系
JPS60114814A (ja) * 1983-11-25 1985-06-21 Canon Inc ズ−ムレンズ
JP2558454B2 (ja) * 1987-02-06 1996-11-27 旭光学工業株式会社 コンパクトなズ−ムレンズ
RU2262727C1 (ru) * 2004-02-20 2005-10-20 Открытое Акционерное Общество "Пеленг" Вариообъектив
US8049968B2 (en) * 2008-01-11 2011-11-01 Tamron Co., Ltd. Zoom lens

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5695212A (en) * 1979-12-28 1981-08-01 Canon Inc Zoom lens of short overall length
JPS56126819A (en) * 1980-03-10 1981-10-05 Asahi Optical Co Ltd Compact telephoto zoom lens

Also Published As

Publication number Publication date
US4468098A (en) 1984-08-28
JPS5859407A (ja) 1983-04-08

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