GB1418386A - Zoom lens systems - Google Patents

Zoom lens systems

Info

Publication number
GB1418386A
GB1418386A GB3468573A GB3468573A GB1418386A GB 1418386 A GB1418386 A GB 1418386A GB 3468573 A GB3468573 A GB 3468573A GB 3468573 A GB3468573 A GB 3468573A GB 1418386 A GB1418386 A GB 1418386A
Authority
GB
United Kingdom
Prior art keywords
zoom lens
lens systems
systems
zoom
lens
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
GB3468573A
Other languages
English (en)
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Publication of GB1418386A publication Critical patent/GB1418386A/en
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
    • G02B15/22—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 movable lens means specially adapted for focusing at close distances

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
GB3468573A 1972-07-20 1973-07-20 Zoom lens systems Expired GB1418386A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7203272A JPS5113663B2 (de) 1972-07-20 1972-07-20

Publications (1)

Publication Number Publication Date
GB1418386A true GB1418386A (en) 1975-12-17

Family

ID=13477649

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3468573A Expired GB1418386A (en) 1972-07-20 1973-07-20 Zoom lens systems

Country Status (3)

Country Link
JP (1) JPS5113663B2 (de)
DE (1) DE2336823C2 (de)
GB (1) GB1418386A (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5832365B2 (ja) * 1974-05-09 1983-07-12 キヤノン株式会社 ズ−ムレンズソウチ
JPS5134741A (ja) * 1974-09-19 1976-03-24 Konishiroku Photo Ind Junkokakuzuumurenzu
JPS52120850A (en) * 1976-04-02 1977-10-11 Elmo Co Ltd Zoom lens having high zoom ratio and large relative aperture
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
JPS5866908A (ja) * 1981-10-16 1983-04-21 Canon Inc コンパクトな望遠ズ−ムレンズ
JPS62189047U (de) * 1986-05-20 1987-12-01

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3507555A (en) * 1967-04-03 1970-04-21 Nippon Kogaku Kk Zoom lens optical system
US3615125A (en) * 1967-07-04 1971-10-26 Nippon Kogaku Kk Compact telephoto type zoom lens
US3547523A (en) * 1967-07-13 1970-12-15 Konishiroku Photo Ind Zoom objective lens system with highly reduced secondary chromatic aberration

Also Published As

Publication number Publication date
JPS5113663B2 (de) 1976-05-01
JPS4932652A (de) 1974-03-25
DE2336823A1 (de) 1974-01-31
DE2336823C2 (de) 1982-06-03

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Legal Events

Date Code Title Description
429A Application made for amendment of specification (sect. 29/1949)
429D Case decided by the comptroller ** specification amended (sect. 29/1949)
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19930719