FR80757E - Objectif de longueur focale variable - Google Patents

Objectif de longueur focale variable

Info

Publication number
FR80757E
FR80757E FR880518A FR880518A FR80757E FR 80757 E FR80757 E FR 80757E FR 880518 A FR880518 A FR 880518A FR 880518 A FR880518 A FR 880518A FR 80757 E FR80757 E FR 80757E
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
FR880518A
Other languages
English (en)
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 FR880518A priority Critical patent/FR80757E/fr
Application granted granted Critical
Publication of FR80757E publication Critical patent/FR80757E/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
    • G02B15/143—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 three groups only
    • G02B15/1431—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 three groups only the first group being positive
    • G02B15/143105—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 three groups only the first group being positive arranged +-+

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR880518A 1961-11-30 1961-11-30 Objectif de longueur focale variable Expired FR80757E (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR880518A FR80757E (fr) 1961-11-30 1961-11-30 Objectif de longueur focale variable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR880518A FR80757E (fr) 1961-11-30 1961-11-30 Objectif de longueur focale variable

Publications (1)

Publication Number Publication Date
FR80757E true FR80757E (fr) 1963-06-14

Family

ID=8767762

Family Applications (1)

Application Number Title Priority Date Filing Date
FR880518A Expired FR80757E (fr) 1961-11-30 1961-11-30 Objectif de longueur focale variable

Country Status (1)

Country Link
FR (1) FR80757E (fr)

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