CH467461A - Objectif à distance focale variable - Google Patents

Objectif à distance focale variable

Info

Publication number
CH467461A
CH467461A CH37568A CH37568A CH467461A CH 467461 A CH467461 A CH 467461A CH 37568 A CH37568 A CH 37568A CH 37568 A CH37568 A CH 37568A CH 467461 A CH467461 A CH 467461A
Authority
CH
Switzerland
Prior art keywords
focal length
length lens
variable focal
variable
lens
Prior art date
Application number
CH37568A
Other languages
English (en)
Original Assignee
Optique Prec Electronique Et M
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 Optique Prec Electronique Et M filed Critical Optique Prec Electronique Et M
Publication of CH467461A publication Critical patent/CH467461A/fr

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
    • G02B15/145—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 five groups only
    • G02B15/1451—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 five groups only the first group being positive
    • G02B15/145121—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 five groups only the first group being positive arranged +-+-+

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
CH37568A 1967-01-25 1968-01-11 Objectif à distance focale variable CH467461A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR92376A FR1520489A (fr) 1967-01-25 1967-01-25 Objectif à distance focale variable

Publications (1)

Publication Number Publication Date
CH467461A true CH467461A (fr) 1969-01-15

Family

ID=8624319

Family Applications (1)

Application Number Title Priority Date Filing Date
CH37568A CH467461A (fr) 1967-01-25 1968-01-11 Objectif à distance focale variable

Country Status (7)

Country Link
US (1) US3533679A (fr)
BE (1) BE708122A (fr)
CH (1) CH467461A (fr)
DE (1) DE1622993B1 (fr)
FR (1) FR1520489A (fr)
GB (1) GB1205841A (fr)
NL (1) NL6800404A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS594687B2 (ja) * 1976-01-28 1984-01-31 キヤノン株式会社 近距離合焦性能の良好なズ−ムレンズ
US4145115A (en) * 1977-03-23 1979-03-20 Vivitar Corporation Zoom lens
US5393843A (en) 1992-08-31 1995-02-28 Shell Oil Company Butadiene polymers having terminal functional groups
JP3167069B2 (ja) * 1993-11-30 2001-05-14 キヤノン株式会社 ズームレンズ

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3192829A (en) * 1961-06-16 1965-07-06 Yamaji Keizo Varifocal lens system of wide varifocal range
FR1336300A (fr) * 1962-07-11 1963-08-30 Soc Optique Mec Haute Prec Système optique à distance focale variable
GB1064323A (en) * 1962-09-14 1967-04-05 Rank Precision Ind Ltd Improvements in or relating to optical objectives of variable equivalent focal length
US3346320A (en) * 1963-07-17 1967-10-10 Schneider Co Optische Werke High-speed varifocal objective
DE1299903B (de) * 1963-08-27 1969-07-24 Nippon Kogaku Kk Pankratisches Objektiv

Also Published As

Publication number Publication date
NL6800404A (fr) 1968-07-26
FR1520489A (fr) 1968-04-12
BE708122A (fr) 1968-05-02
US3533679A (en) 1970-10-13
GB1205841A (en) 1970-09-16
DE1622993B1 (de) 1970-10-29

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