CH482207A - Variable focal length lens - Google Patents

Variable focal length lens

Info

Publication number
CH482207A
CH482207A CH60768A CH60768A CH482207A CH 482207 A CH482207 A CH 482207A CH 60768 A CH60768 A CH 60768A CH 60768 A CH60768 A CH 60768A CH 482207 A CH482207 A CH 482207A
Authority
CH
Switzerland
Prior art keywords
focal length
length lens
variable focal
variable
lens
Prior art date
Application number
CH60768A
Other languages
French (fr)
Inventor
Henry Cook Gordon
Laurent Francois
Original Assignee
Rank Organisation Ltd
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 Rank Organisation Ltd filed Critical Rank Organisation Ltd
Publication of CH482207A publication Critical patent/CH482207A/en

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 -+-+-
CH60768A 1967-01-16 1966-01-16 Variable focal length lens CH482207A (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
CH482207A true CH482207A (en) 1969-11-30

Family

ID=9735906

Family Applications (1)

Application Number Title Priority Date Filing Date
CH60768A CH482207A (en) 1967-01-16 1966-01-16 Variable focal length lens

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
GB2253281B (en) * 1991-02-15 1994-05-25 Asahi Optical Co Ltd Zoom lens

Also Published As

Publication number Publication date
GB1167373A (en) 1969-10-15
DE1622990A1 (en) 1972-01-05
FR1560457A (en) 1969-03-21
NL6800621A (en) 1968-07-17

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Legal Events

Date Code Title Description
PL Patent ceased