IT942317B - Obiettivo a distanza focale varia bile - Google Patents

Obiettivo a distanza focale varia bile

Info

Publication number
IT942317B
IT942317B IT86221/71A IT8622171A IT942317B IT 942317 B IT942317 B IT 942317B IT 86221/71 A IT86221/71 A IT 86221/71A IT 8622171 A IT8622171 A IT 8622171A IT 942317 B IT942317 B IT 942317B
Authority
IT
Italy
Prior art keywords
focal distance
variable focal
distance lens
lens
variable
Prior art date
Application number
IT86221/71A
Other languages
English (en)
Italian (it)
Original Assignee
Bertele L J
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 L J filed Critical Bertele L J
Application granted granted Critical
Publication of IT942317B publication Critical patent/IT942317B/it

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)
IT86221/71A 1970-03-25 1971-03-17 Obiettivo a distanza focale varia bile IT942317B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH458670A CH522230A (de) 1970-03-25 1970-03-25 Objektiv mit veränderbarer Brennweite

Publications (1)

Publication Number Publication Date
IT942317B true IT942317B (it) 1973-03-20

Family

ID=4278848

Family Applications (1)

Application Number Title Priority Date Filing Date
IT86221/71A IT942317B (it) 1970-03-25 1971-03-17 Obiettivo a distanza focale varia bile

Country Status (5)

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

Also Published As

Publication number Publication date
AT301206B (de) 1972-08-25
DE2114073A1 (de) 1971-10-14
GB1336768A (en) 1973-11-07
CH522230A (de) 1972-06-15

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