CH326225A - Dispositif optique à distance focale variable - Google Patents

Dispositif optique à distance focale variable

Info

Publication number
CH326225A
CH326225A CH326225DA CH326225A CH 326225 A CH326225 A CH 326225A CH 326225D A CH326225D A CH 326225DA CH 326225 A CH326225 A CH 326225A
Authority
CH
Switzerland
Prior art keywords
focal length
optical device
variable focal
length optical
variable
Prior art date
Application number
Other languages
English (en)
Inventor
Reymond Lucien
Original Assignee
Soc Optique Mec Haute Prec
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 Soc Optique Mec Haute Prec filed Critical Soc Optique Mec Haute Prec
Publication of CH326225A publication Critical patent/CH326225A/fr

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)
  • Lenses (AREA)
  • Telescopes (AREA)
CH326225D 1953-05-13 1954-04-26 Dispositif optique à distance focale variable CH326225A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR326225X 1953-05-13

Publications (1)

Publication Number Publication Date
CH326225A true CH326225A (fr) 1957-12-15

Family

ID=8890523

Family Applications (1)

Application Number Title Priority Date Filing Date
CH326225D CH326225A (fr) 1953-05-13 1954-04-26 Dispositif optique à distance focale variable

Country Status (3)

Country Link
US (1) US2778272A (fr)
CH (1) CH326225A (fr)
GB (1) GB750550A (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2906171A (en) * 1955-12-20 1959-09-29 Bergstein Leonard Varifocal lens system
DE1198583B (de) * 1956-05-07 1965-08-12 Optique & De Mecanique De Haut Afokales optisches System mit stetig veraenderlicher Vergroesserung
US2970516A (en) * 1957-01-14 1961-02-07 Frank G Back Multiple element varifocal system
US2843016A (en) * 1957-03-04 1958-07-15 Eastman Kodak Co Optical zoom system
US2908199A (en) * 1957-05-03 1959-10-13 Edward K Kaprelian Variable focal length lens system
US3004471A (en) * 1958-06-06 1961-10-17 Taylor Taylor & Hobson Ltd Control devices for optical objectives of variable focal length
US2913957A (en) * 1958-06-27 1959-11-24 Frank G Back Varifocal lens assembly
US2925010A (en) * 1959-01-15 1960-02-16 Wollensak Optical Co Variable focal length lens
US3014406A (en) * 1959-02-19 1961-12-26 Frank G Back Varifocal lens assembly for still camera photography
US3051052A (en) * 1959-08-31 1962-08-28 Bergstein Leonard Varifocal lens system with four points of exact image shift compensation
US3029700A (en) * 1959-11-25 1962-04-17 Eastman Kodak Co Variable magnification afocal lens converter
DE1248326B (de) * 1961-08-15 1967-08-24 Nippon Kogaku Kk Pankratisches Objektiv
US3773402A (en) * 1970-09-15 1973-11-20 Vockenhuber Karl Pancratic lens
DE2208163C2 (de) * 1972-02-22 1974-02-07 Fa. Carl Zeiss, 7920 Heidenheim Photographisches Tele-Linsen-Objektiv
US3883230A (en) * 1973-02-14 1975-05-13 Zeiss Stiftung Telephoto lens objective
CH613532A5 (fr) * 1977-04-21 1979-09-28 Bolex Int Sa
US4278330A (en) * 1979-05-14 1981-07-14 Applied Systems Corporation Catadioptric virtual-zoom optical system
GB9501412D0 (en) * 1995-01-25 1995-03-15 Lumonics Ltd Laser apparatus
US11340436B2 (en) 2018-02-12 2022-05-24 Iain A. Neil Objective lenses having multiple focal lengths and a small focal-length ratio

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2235364A (en) * 1935-03-24 1941-03-18 Gramatzki Hugh John Afocal camera lens attachment
US2165341A (en) * 1936-07-28 1939-07-11 Eastman Kodak Co Photographic objective
US2454686A (en) * 1946-07-30 1948-11-23 Frank G Back Varifocal lens for cameras
US2566485A (en) * 1949-01-28 1951-09-04 Optique & De Mecanique De Haut Auxiliary optical device with variable magnifying power
US2649025A (en) * 1950-09-22 1953-08-18 Taylor Taylor & Hobson Ltd Optical objective of variable focal length
DE1074284B (de) * 1952-07-22 1960-01-28 Societe dOptiquc et de Mecamque de Haute Precision, Paris Optisches System veränderlicher Brenn weite

Also Published As

Publication number Publication date
US2778272A (en) 1957-01-22
GB750550A (en) 1956-06-20

Similar Documents

Publication Publication Date Title
FR1111221A (fr) Appareil de projection optique
CH326225A (fr) Dispositif optique à distance focale variable
FR1112979A (fr) Objectif à distance focale variable
FR1060514A (fr) Système optique à distance focale variable
CH327354A (de) Lichtstarkes Teleobjektiv
FR1107482A (fr) Dispositif de focalisation électrostatique
CH386129A (fr) Système optique à distance focale variable
FR1167796A (fr) Système optique à distance focale variable de façon continue
FR1149437A (fr) Dispositif optique de balayage
FR1081948A (fr) Nouveau dispositif optique à distance focale variable
FR1094233A (fr) Objectif photographique
FR1336300A (fr) Système optique à distance focale variable
FR1103487A (fr) Dispositif optique de signalisation lumineuse
FR1080099A (fr) Objectif très lumineux à distance focale variable
FR1150483A (fr) Système optique à distance focale variable
FR1539646A (fr) Dispositif optique à focale variable
FR1526715A (fr) Dispositif à fente pour appareil optique
CH386130A (fr) Système optique à distance focale variable
FR1073413A (fr) Dispositif de visée optique
FR1322227A (fr) Système optique à distance focale variable
FR1112429A (fr) Lentille optique
FR1146559A (fr) Nouveau dispositif optique
FR1120692A (fr) Système optique à grossissement variable
FR1112893A (fr) Dispositif optique
FR1085082A (fr) Photomètre optique