AT301206B - Lens with adjustable focal length - Google Patents

Lens with adjustable focal length

Info

Publication number
AT301206B
AT301206B AT231971A AT231971A AT301206B AT 301206 B AT301206 B AT 301206B AT 231971 A AT231971 A AT 231971A AT 231971 A AT231971 A AT 231971A AT 301206 B AT301206 B AT 301206B
Authority
AT
Austria
Prior art keywords
lens
focal length
adjustable focal
adjustable
length
Prior art date
Application number
AT231971A
Other languages
German (de)
Original Assignee
Bertele Ludwig
Juergen Bertele
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 Bertele Ludwig, Juergen Bertele filed Critical Bertele Ludwig
Application granted granted Critical
Publication of AT301206B publication Critical patent/AT301206B/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
    • G02B15/146—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
    • G02B15/1465—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 the first group being negative

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
  • Lenses (AREA)
AT231971A 1970-03-25 1971-03-17 Lens with adjustable focal length AT301206B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH458670A CH522230A (en) 1970-03-25 1970-03-25 Lens with adjustable focal length

Publications (1)

Publication Number Publication Date
AT301206B true AT301206B (en) 1972-08-25

Family

ID=4278848

Family Applications (1)

Application Number Title Priority Date Filing Date
AT231971A AT301206B (en) 1970-03-25 1971-03-17 Lens with adjustable focal length

Country Status (5)

Country Link
AT (1) AT301206B (en)
CH (1) CH522230A (en)
DE (1) DE2114073A1 (en)
GB (1) GB1336768A (en)
IT (1) IT942317B (en)

Also Published As

Publication number Publication date
DE2114073A1 (en) 1971-10-14
GB1336768A (en) 1973-11-07
IT942317B (en) 1973-03-20
CH522230A (en) 1972-06-15

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Legal Events

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