CA990987A - Zoom lens system - Google Patents

Zoom lens system

Info

Publication number
CA990987A
CA990987A CA190,623A CA190623A CA990987A CA 990987 A CA990987 A CA 990987A CA 190623 A CA190623 A CA 190623A CA 990987 A CA990987 A CA 990987A
Authority
CA
Canada
Prior art keywords
zoom lens
lens system
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
CA190,623A
Inventor
Yutaka Sakai
Yoshikazu Doi
Kenzo Sado
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.)
Fujinon Corp
Original Assignee
Fuji Photo 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 Fuji Photo Optical Co Ltd filed Critical Fuji Photo Optical Co Ltd
Application granted granted Critical
Publication of CA990987A publication Critical patent/CA990987A/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
    • G02B15/146—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 more than five groups

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
CA190,623A 1973-08-17 1974-01-18 Zoom lens system Expired CA990987A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP48092113A JPS5040144A (en) 1973-08-17 1973-08-17

Publications (1)

Publication Number Publication Date
CA990987A true CA990987A (en) 1976-06-15

Family

ID=14045360

Family Applications (1)

Application Number Title Priority Date Filing Date
CA190,623A Expired CA990987A (en) 1973-08-17 1974-01-18 Zoom lens system

Country Status (5)

Country Link
JP (1) JPS5040144A (en)
CA (1) CA990987A (en)
DE (1) DE2412847C2 (en)
FR (1) FR2241084B1 (en)
GB (1) GB1432072A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5237445A (en) * 1975-09-20 1977-03-23 Minolta Camera Co Ltd Lens system rendering variable characteristics of an image plane
JPS5832686B2 (en) * 1976-04-20 1983-07-14 オリンパス光学工業株式会社 High variable power zoom lens
JPS52128153A (en) * 1976-04-20 1977-10-27 Olympus Optical Co Ltd Highly variable multiplying zoom lens which instals correction gap of short range image-pickup capacity
JPS53149045A (en) * 1977-05-31 1978-12-26 Fuji Photo Optical Co Ltd Zoom lens
JPS548172U (en) * 1977-06-20 1979-01-19
DE2900977C2 (en) * 1979-01-12 1982-09-09 Fa. Carl Zeiss, 7920 Heidenheim Photographic lens with continuously variable focal length
JPS57135912A (en) * 1981-02-16 1982-08-21 Asahi Optical Co Ltd Zoom lens
JPS58127909A (en) * 1982-01-26 1983-07-30 Canon Inc Zoom lens
JPS60208723A (en) * 1984-04-02 1985-10-21 Canon Inc Fast zoom lens of high variable power
JP3088112B2 (en) * 1990-10-12 2000-09-18 旭光学工業株式会社 Zoom lens

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1103046B (en) * 1959-11-06 1961-03-23 Schneider Co Optische Werke Vario lens, preferably Vario attachment system
CH482207A (en) * 1967-01-16 1969-11-30 Rank Organisation Ltd Variable focal length lens

Also Published As

Publication number Publication date
DE2412847A1 (en) 1975-02-27
DE2412847C2 (en) 1983-12-08
JPS5040144A (en) 1975-04-12
FR2241084A1 (en) 1975-03-14
FR2241084B1 (en) 1976-06-25
GB1432072A (en) 1976-04-14

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