FR73199E - Variable magnification optical system - Google Patents

Variable magnification optical system

Info

Publication number
FR73199E
FR73199E FR760553A FR760553A FR73199E FR 73199 E FR73199 E FR 73199E FR 760553 A FR760553 A FR 760553A FR 760553 A FR760553 A FR 760553A FR 73199 E FR73199 E FR 73199E
Authority
FR
France
Prior art keywords
optical system
variable magnification
magnification optical
variable
optical
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
FR760553A
Other languages
French (fr)
Inventor
Achille-Pierre Dufour
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 FR760553A priority Critical patent/FR73199E/en
Application granted granted Critical
Publication of FR73199E publication Critical patent/FR73199E/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
    • G02B15/143—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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR760553A 1958-03-14 1958-03-14 Variable magnification optical system Expired FR73199E (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR760553A FR73199E (en) 1958-03-14 1958-03-14 Variable magnification optical system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR760553A FR73199E (en) 1958-03-14 1958-03-14 Variable magnification optical system

Publications (1)

Publication Number Publication Date
FR73199E true FR73199E (en) 1960-09-23

Family

ID=8705984

Family Applications (1)

Application Number Title Priority Date Filing Date
FR760553A Expired FR73199E (en) 1958-03-14 1958-03-14 Variable magnification optical system

Country Status (1)

Country Link
FR (1) FR73199E (en)

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