FR1560457A - - Google Patents

Info

Publication number
FR1560457A
FR1560457A FR1560457DA FR1560457A FR 1560457 A FR1560457 A FR 1560457A FR 1560457D A FR1560457D A FR 1560457DA FR 1560457 A FR1560457 A FR 1560457A
Authority
FR
France
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
Other languages
French (fr)
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 filed Critical
Application granted granted Critical
Publication of FR1560457A publication Critical patent/FR1560457A/fr
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
    • G02B15/145—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 five groups only
    • G02B15/1455—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 five groups only the first group being negative
    • G02B15/145511—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 five groups only the first group being negative arranged -+-+-
FR1560457D 1967-01-16 1968-01-16 Expired FR1560457A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2231/67A GB1167373A (en) 1967-01-16 1967-01-16 Optical Objective of Variable Focal Length

Publications (1)

Publication Number Publication Date
FR1560457A true FR1560457A (en) 1969-03-21

Family

ID=9735906

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1560457D Expired FR1560457A (en) 1967-01-16 1968-01-16

Country Status (5)

Country Link
CH (1) CH482207A (en)
DE (1) DE1622990A1 (en)
FR (1) FR1560457A (en)
GB (1) GB1167373A (en)
NL (1) NL6800621A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5040144A (en) * 1973-08-17 1975-04-12
US5264965A (en) * 1991-02-15 1993-11-23 Asahi Kogaku Kogyo Kabushiki Kaisha Zoom lens

Also Published As

Publication number Publication date
GB1167373A (en) 1969-10-15
CH482207A (en) 1969-11-30
NL6800621A (en) 1968-07-17
DE1622990A1 (en) 1972-01-05

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Legal Events

Date Code Title Description
ST Notification of lapse