FR1344261A - Variable focal length lens - Google Patents

Variable focal length lens

Info

Publication number
FR1344261A
FR1344261A FR898902A FR898902A FR1344261A FR 1344261 A FR1344261 A FR 1344261A FR 898902 A FR898902 A FR 898902A FR 898902 A FR898902 A FR 898902A FR 1344261 A FR1344261 A FR 1344261A
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
FR898902A
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
Application filed filed Critical
Priority to FR898902A priority Critical patent/FR1344261A/en
Priority to GB21245/63A priority patent/GB975309A/en
Application granted granted Critical
Publication of FR1344261A publication Critical patent/FR1344261A/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
    • G02B15/144109—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 +--+

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
FR898902A 1962-05-28 1962-05-28 Variable focal length lens Expired FR1344261A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR898902A FR1344261A (en) 1962-05-28 1962-05-28 Variable focal length lens
GB21245/63A GB975309A (en) 1962-05-28 1963-05-28 Variable focal length lens system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR898902A FR1344261A (en) 1962-05-28 1962-05-28 Variable focal length lens

Publications (1)

Publication Number Publication Date
FR1344261A true FR1344261A (en) 1963-11-29

Family

ID=8779870

Family Applications (1)

Application Number Title Priority Date Filing Date
FR898902A Expired FR1344261A (en) 1962-05-28 1962-05-28 Variable focal length lens

Country Status (2)

Country Link
FR (1) FR1344261A (en)
GB (1) GB975309A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1277581B (en) * 1965-04-03 1968-09-12 Zeiss Carl Fa Photographic lens with continuously changeable focal length
US3501224A (en) * 1967-01-24 1970-03-17 Asahi Optical Co Ltd Zoom lens having four lens groups
JPS4832387B1 (en) * 1969-07-26 1973-10-05
JPS57158610A (en) * 1981-03-25 1982-09-30 Nippon Kogaku Kk <Nikon> Zoom lens system capable of close-up shooting

Also Published As

Publication number Publication date
GB975309A (en) 1964-11-11

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