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GB923634A - Photographic objective with continually variable focal length - Google Patents

Photographic objective with continually variable focal length

Info

Publication number
GB923634A
GB923634A GB16876/59A GB1687659A GB923634A GB 923634 A GB923634 A GB 923634A GB 16876/59 A GB16876/59 A GB 16876/59A GB 1687659 A GB1687659 A GB 1687659A GB 923634 A GB923634 A GB 923634A
Authority
GB
United Kingdom
Prior art keywords
focal length
lens group
iii
variable focal
positive
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
GB16876/59A
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.)
Carl Zeiss AG
Original Assignee
Carl Zeiss AG
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 Carl Zeiss AG filed Critical Carl Zeiss AG
Publication of GB923634A publication Critical patent/GB923634A/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
    • G02B15/144—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
    • G02B15/144105—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)
  • Eyeglasses (AREA)
  • Lens Barrels (AREA)
GB16876/59A 1958-09-17 1959-05-19 Photographic objective with continually variable focal length Expired GB923634A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEZ6853A DE1086062B (de) 1958-09-17 1958-09-17 Photographisches Objektiv mit kontinuierlich veraenderlicher Brennweite

Publications (1)

Publication Number Publication Date
GB923634A true GB923634A (en) 1963-04-18

Family

ID=7619914

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16876/59A Expired GB923634A (en) 1958-09-17 1959-05-19 Photographic objective with continually variable focal length

Country Status (2)

Country Link
DE (1) DE1086062B (de)
GB (1) GB923634A (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL255488A (de) * 1959-09-03
US3330615A (en) * 1963-05-06 1967-07-11 Eastman Kodak Co Zoom lens
DE1299903B (de) * 1963-08-27 1969-07-24 Nippon Kogaku Kk Pankratisches Objektiv

Also Published As

Publication number Publication date
DE1086062B (de) 1960-07-28

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