FR82637E - Variable focal length lens - Google Patents

Variable focal length lens

Info

Publication number
FR82637E
FR82637E FR916120A FR916120A FR82637E FR 82637 E FR82637 E FR 82637E FR 916120 A FR916120 A FR 916120A FR 916120 A FR916120 A FR 916120A FR 82637 E FR82637 E FR 82637E
Authority
FR
France
Prior art keywords
focal length
length lens
variable focal
variable
lens
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
FR916120A
Other languages
French (fr)
Inventor
Pierre Angenieux
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
Priority to FR901732A priority Critical patent/FR1333932A/en
Application filed filed Critical
Priority to FR916120A priority patent/FR82637E/en
Priority to GB12499/63A priority patent/GB975160A/en
Application granted granted Critical
Publication of FR82637E publication Critical patent/FR82637E/en
Expired legal-status Critical Current

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
    • G02B15/144105—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 +-+-
FR916120A 1962-06-23 1962-11-21 Variable focal length lens Expired FR82637E (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR901732A FR1333932A (en) 1962-06-23 1962-06-23 Variable focal length lens
FR916120A FR82637E (en) 1962-06-23 1962-11-21 Variable focal length lens
GB12499/63A GB975160A (en) 1962-06-23 1963-03-29 Improvements in or relating to variable focal length lens systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR901732A FR1333932A (en) 1962-06-23 1962-06-23 Variable focal length lens
FR916120A FR82637E (en) 1962-06-23 1962-11-21 Variable focal length lens

Publications (1)

Publication Number Publication Date
FR82637E true FR82637E (en) 1964-03-20

Family

ID=26196296

Family Applications (2)

Application Number Title Priority Date Filing Date
FR901732A Expired FR1333932A (en) 1962-06-23 1962-06-23 Variable focal length lens
FR916120A Expired FR82637E (en) 1962-06-23 1962-11-21 Variable focal length lens

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR901732A Expired FR1333932A (en) 1962-06-23 1962-06-23 Variable focal length lens

Country Status (2)

Country Link
FR (2) FR1333932A (en)
GB (1) GB975160A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3549235A (en) * 1967-06-30 1970-12-22 Schneider Co Optische Werke High-speed varifocal objective system
US4398808A (en) * 1980-01-31 1983-08-16 Canon Kabushiki Kaisha Compact zoom lens of high magnification

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5156645A (en) * 1974-11-13 1976-05-18 Yashica Co Ltd Kokakuzuumurenzukei
FR2332547A1 (en) * 1975-11-21 1977-06-17 Angenieux Pierre IMAGE ENLARGEMENT OPTICAL DRIVE
US4758073A (en) * 1980-10-01 1988-07-19 Vivitar Corporation Zoom lens
JPS5915214A (en) * 1982-07-17 1984-01-26 Canon Inc Focusing method of zoom lens
US7123421B1 (en) 2005-04-22 2006-10-17 Panavision International, L.P. Compact high performance zoom lens system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3549235A (en) * 1967-06-30 1970-12-22 Schneider Co Optische Werke High-speed varifocal objective system
US4398808A (en) * 1980-01-31 1983-08-16 Canon Kabushiki Kaisha Compact zoom lens of high magnification

Also Published As

Publication number Publication date
GB975160A (en) 1964-11-11
FR1333932A (en) 1963-08-02

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