FR1473070A - Objectif à forte luminosité à focale variable - Google Patents

Objectif à forte luminosité à focale variable

Info

Publication number
FR1473070A
FR1473070A FR43757A FR43757A FR1473070A FR 1473070 A FR1473070 A FR 1473070A FR 43757 A FR43757 A FR 43757A FR 43757 A FR43757 A FR 43757A FR 1473070 A FR1473070 A FR 1473070A
Authority
FR
France
Prior art keywords
high brightness
varifocal lens
varifocal
lens
brightness
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
FR43757A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jos Schneider Optische Werke GmbH
Original Assignee
Jos Schneider Optische Werke GmbH
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 Jos Schneider Optische Werke GmbH filed Critical Jos Schneider Optische Werke GmbH
Application granted granted Critical
Publication of FR1473070A publication Critical patent/FR1473070A/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
    • G02B15/144—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
    • G02B15/144113—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)
FR43757A 1964-12-28 1965-12-27 Objectif à forte luminosité à focale variable Expired FR1473070A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESC036311 1964-12-28

Publications (1)

Publication Number Publication Date
FR1473070A true FR1473070A (fr) 1967-03-17

Family

ID=7433818

Family Applications (1)

Application Number Title Priority Date Filing Date
FR43757A Expired FR1473070A (fr) 1964-12-28 1965-12-27 Objectif à forte luminosité à focale variable

Country Status (6)

Country Link
US (1) US3451743A (fr)
AT (1) AT259896B (fr)
CH (1) CH435787A (fr)
DE (1) DE1248972B (fr)
FR (1) FR1473070A (fr)
GB (1) GB1134839A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2043193C3 (de) * 1970-09-01 1980-10-30 Kurt 2000 Hamburg Kirchhoff Anamorphotisches Aufnahmeobjektiv mit veränderbarer Brennweite

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2925010A (en) * 1959-01-15 1960-02-16 Wollensak Optical Co Variable focal length lens
US2997921A (en) * 1959-10-07 1961-08-29 Revere Camera Co Lens for zoom viewfinders
US2984155A (en) * 1959-12-28 1961-05-16 Bausch & Lomb Variable magnification afocal optical system
US3307898A (en) * 1963-09-30 1967-03-07 Bausch & Lomb Optically compensated loom type optical objective

Also Published As

Publication number Publication date
US3451743A (en) 1969-06-24
DE1248972B (fr)
CH435787A (de) 1967-05-15
AT259896B (de) 1968-02-12
GB1134839A (en) 1968-11-27

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