AT279925B - Lens with continuously variable focal length - Google Patents

Lens with continuously variable focal length

Info

Publication number
AT279925B
AT279925B AT1053768A AT1053768A AT279925B AT 279925 B AT279925 B AT 279925B AT 1053768 A AT1053768 A AT 1053768A AT 1053768 A AT1053768 A AT 1053768A AT 279925 B AT279925 B AT 279925B
Authority
AT
Austria
Prior art keywords
lens
focal length
continuously variable
variable focal
continuously
Prior art date
Application number
AT1053768A
Other languages
German (de)
Original Assignee
Agfa Gevaert 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 Agfa Gevaert Ag filed Critical Agfa Gevaert Ag
Application granted granted Critical
Publication of AT279925B publication Critical patent/AT279925B/en

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
    • G02B15/144113—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)
  • Lenses (AREA)
AT1053768A 1968-03-08 1968-10-29 Lens with continuously variable focal length AT279925B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA58392A DE1278132B (en) 1968-03-08 1968-03-08 Lens with continuously changeable focal length

Publications (1)

Publication Number Publication Date
AT279925B true AT279925B (en) 1970-03-25

Family

ID=6941597

Family Applications (1)

Application Number Title Priority Date Filing Date
AT1053768A AT279925B (en) 1968-03-08 1968-10-29 Lens with continuously variable focal length

Country Status (2)

Country Link
AT (1) AT279925B (en)
DE (1) DE1278132B (en)

Also Published As

Publication number Publication date
DE1278132B (en) 1968-09-19

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee