FR1299125A - Objectifs à distance focale variable - Google Patents

Objectifs à distance focale variable

Info

Publication number
FR1299125A
FR1299125A FR864538A FR864538A FR1299125A FR 1299125 A FR1299125 A FR 1299125A FR 864538 A FR864538 A FR 864538A FR 864538 A FR864538 A FR 864538A FR 1299125 A FR1299125 A FR 1299125A
Authority
FR
France
Prior art keywords
focal length
variable focal
length lenses
lenses
variable
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
FR864538A
Other languages
English (en)
Inventor
Andre Marechal
Edgar Hugues
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 FR864538A priority Critical patent/FR1299125A/fr
Application granted granted Critical
Publication of FR1299125A publication Critical patent/FR1299125A/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)
FR864538A 1961-06-10 1961-06-10 Objectifs à distance focale variable Expired FR1299125A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR864538A FR1299125A (fr) 1961-06-10 1961-06-10 Objectifs à distance focale variable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR864538A FR1299125A (fr) 1961-06-10 1961-06-10 Objectifs à distance focale variable

Publications (1)

Publication Number Publication Date
FR1299125A true FR1299125A (fr) 1962-07-20

Family

ID=8756977

Family Applications (1)

Application Number Title Priority Date Filing Date
FR864538A Expired FR1299125A (fr) 1961-06-10 1961-06-10 Objectifs à distance focale variable

Country Status (1)

Country Link
FR (1) FR1299125A (fr)

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