JPS6155093B2 - - Google Patents

Info

Publication number
JPS6155093B2
JPS6155093B2 JP56046213A JP4621381A JPS6155093B2 JP S6155093 B2 JPS6155093 B2 JP S6155093B2 JP 56046213 A JP56046213 A JP 56046213A JP 4621381 A JP4621381 A JP 4621381A JP S6155093 B2 JPS6155093 B2 JP S6155093B2
Authority
JP
Japan
Prior art keywords
lens group
lens
lens system
length
focal length
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
JP56046213A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57161804A (en
Inventor
Kinji Takabayashi
Masakuni Tai
Tomonori Abe
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.)
Tokina Optical Co Ltd
Original Assignee
Tokina Optical 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 Tokina Optical Co Ltd filed Critical Tokina Optical Co Ltd
Priority to JP56046213A priority Critical patent/JPS57161804A/ja
Publication of JPS57161804A publication Critical patent/JPS57161804A/ja
Publication of JPS6155093B2 publication Critical patent/JPS6155093B2/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)
JP56046213A 1981-03-31 1981-03-31 Zoom lens system Granted JPS57161804A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56046213A JPS57161804A (en) 1981-03-31 1981-03-31 Zoom lens system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56046213A JPS57161804A (en) 1981-03-31 1981-03-31 Zoom lens system

Publications (2)

Publication Number Publication Date
JPS57161804A JPS57161804A (en) 1982-10-05
JPS6155093B2 true JPS6155093B2 (en, 2012) 1986-11-26

Family

ID=12740813

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56046213A Granted JPS57161804A (en) 1981-03-31 1981-03-31 Zoom lens system

Country Status (1)

Country Link
JP (1) JPS57161804A (en, 2012)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58127908A (ja) * 1982-01-26 1983-07-30 Minolta Camera Co Ltd 広角域を含む高変倍率ズ−ムレンズ系
JPS58224323A (ja) * 1982-06-23 1983-12-26 Asahi Optical Co Ltd ズ−ムレンズ
JPS59201014A (ja) * 1983-04-28 1984-11-14 Nitto Kogaku Kk 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
JPS6026312A (ja) * 1983-07-22 1985-02-09 Olympus Optical Co Ltd ズ−ムレンズ
JP2814388B2 (ja) * 1989-06-27 1998-10-22 株式会社ニコン ズームレンズ
US5568321A (en) * 1990-11-16 1996-10-22 Canon Kabushiki Kaisha Zoom lens
CH693804A5 (de) * 1994-10-13 2004-02-13 Zeiss Carl Fa Beleuchtungseinrichtung für ein Stereomikroskop.
JP3387687B2 (ja) * 1995-03-13 2003-03-17 キヤノン株式会社 ズームレンズ

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JPS57161804A (en) 1982-10-05

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