CH357560A - Optisches System veränderbarer Brennweite für Laufbildkameras - Google Patents

Optisches System veränderbarer Brennweite für Laufbildkameras

Info

Publication number
CH357560A
CH357560A CH357560DA CH357560A CH 357560 A CH357560 A CH 357560A CH 357560D A CH357560D A CH 357560DA CH 357560 A CH357560 A CH 357560A
Authority
CH
Switzerland
Prior art keywords
optical system
focal length
motion picture
variable focal
picture cameras
Prior art date
Application number
Other languages
English (en)
Inventor
W Bechtold Edwin
Kapilow Marvin
J Weinstein Alex
Original Assignee
Ednalite Optical Company Inc
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 Ednalite Optical Company Inc filed Critical Ednalite Optical Company Inc
Publication of CH357560A publication Critical patent/CH357560A/de

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
    • G02B15/143—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 three groups only
    • G02B15/1431—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 three groups only the first group being positive
    • G02B15/143105—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 three groups only the first group being positive arranged +-+

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)
  • Lens Barrels (AREA)
  • Telescopes (AREA)
CH357560D 1955-12-06 1956-12-04 Optisches System veränderbarer Brennweite für Laufbildkameras CH357560A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US357560XA 1955-12-06 1955-12-06

Publications (1)

Publication Number Publication Date
CH357560A true CH357560A (de) 1961-10-15

Family

ID=21884601

Family Applications (1)

Application Number Title Priority Date Filing Date
CH357560D CH357560A (de) 1955-12-06 1956-12-04 Optisches System veränderbarer Brennweite für Laufbildkameras

Country Status (3)

Country Link
CH (1) CH357560A (de)
DE (1) DE1113097B (de)
GB (1) GB808395A (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2995061A (en) * 1959-05-29 1961-08-08 Revere Camera Co Mechanism for adjusting zoom lens assembly
US3083628A (en) * 1959-12-14 1963-04-02 Yashica Co Ltd Camera

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE597354C (de) * 1931-04-19 1934-05-25 Emil Busch Akt Ges Optische In Objektiv mit veraenderlicher Brennweite
US2165341A (en) * 1936-07-28 1939-07-11 Eastman Kodak Co Photographic objective
DE735180C (de) * 1938-11-27 1943-05-07 Robot Berning & Co Bildsucher
GB536706A (en) * 1939-05-10 1941-05-23 Kodak Ltd Improvements in or relating to variable power viewfinders
US2437032A (en) * 1945-08-09 1948-03-02 Edward K Kaprelian Variable field range and view finder

Also Published As

Publication number Publication date
DE1113097B (de) 1961-08-24
GB808395A (en) 1959-02-04

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