IT1178378B - Obiettivo zoom di elevata potenza varibile per distanze finite - Google Patents

Obiettivo zoom di elevata potenza varibile per distanze finite

Info

Publication number
IT1178378B
IT1178378B IT48211/84A IT4821184A IT1178378B IT 1178378 B IT1178378 B IT 1178378B IT 48211/84 A IT48211/84 A IT 48211/84A IT 4821184 A IT4821184 A IT 4821184A IT 1178378 B IT1178378 B IT 1178378B
Authority
IT
Italy
Prior art keywords
distances
finished
power zoom
voice power
high voice
Prior art date
Application number
IT48211/84A
Other languages
English (en)
Other versions
IT8448211A0 (it
Inventor
Takayuki Itoh
Original Assignee
Asahi 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 Asahi Optical Co Ltd filed Critical Asahi Optical Co Ltd
Publication of IT8448211A0 publication Critical patent/IT8448211A0/it
Application granted granted Critical
Publication of IT1178378B publication Critical patent/IT1178378B/it

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/24—Optical objectives specially designed for the purposes specified below for reproducing or copying at short object distances
    • 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
    • G02B15/16—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 with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
    • G02B15/177—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 with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a negative front lens or group of lenses
    • 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
    • G02B15/1445—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 negative
    • G02B15/144511—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 negative arranged -+-+

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Lenses (AREA)
IT48211/84A 1983-05-19 1984-05-17 Obiettivo zoom di elevata potenza varibile per distanze finite IT1178378B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58088196A JPS59214009A (ja) 1983-05-19 1983-05-19 高変倍有限距離用ズ−ムレンズ

Publications (2)

Publication Number Publication Date
IT8448211A0 IT8448211A0 (it) 1984-05-17
IT1178378B true IT1178378B (it) 1987-09-09

Family

ID=13936141

Family Applications (1)

Application Number Title Priority Date Filing Date
IT48211/84A IT1178378B (it) 1983-05-19 1984-05-17 Obiettivo zoom di elevata potenza varibile per distanze finite

Country Status (3)

Country Link
JP (1) JPS59214009A (it)
DE (1) DE3418639A1 (it)
IT (1) IT1178378B (it)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2899005B2 (ja) * 1989-01-30 1999-06-02 キヤノン株式会社 内蔵フォーカスレンズを具えたズームレンズ
JPH065636U (ja) * 1991-12-25 1994-01-25 齋藤遠心機工業株式会社 漢方薬の煎じ装置
DE4315630C2 (de) * 1993-05-04 1996-01-11 Zeiss Carl Jena Gmbh Varioobjektiv mit endlicher Übertragungslänge
DE4344366C2 (de) * 1993-12-24 1997-05-28 Zeiss Carl Jena Gmbh Optisches System mit variablem Abbildungsmaßstab
JP4507543B2 (ja) * 2003-09-29 2010-07-21 株式会社ニコン ズームレンズ
JP5457750B2 (ja) * 2009-08-03 2014-04-02 オリンパス株式会社 変倍光学系及びそれを有する撮像装置
JP6171344B2 (ja) * 2013-01-08 2017-08-02 リコーイメージング株式会社 ズームレンズ系及びこれを備えた電子撮像装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5711315A (en) * 1980-06-24 1982-01-21 Konishiroku Photo Ind Co Ltd Zoom lens with highly variable magnification preceding negative groups

Also Published As

Publication number Publication date
DE3418639A1 (de) 1984-11-22
JPH0146045B2 (it) 1989-10-05
JPS59214009A (ja) 1984-12-03
DE3418639C2 (it) 1987-12-17
IT8448211A0 (it) 1984-05-17

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