FR1120692A - Variable magnification optical system - Google Patents

Variable magnification optical system

Info

Publication number
FR1120692A
FR1120692A FR1120692DA FR1120692A FR 1120692 A FR1120692 A FR 1120692A FR 1120692D A FR1120692D A FR 1120692DA FR 1120692 A FR1120692 A FR 1120692A
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
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
Application granted granted Critical
Publication of FR1120692A publication Critical patent/FR1120692A/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
    • G02B15/142—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 two groups only

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR1120692D 1955-01-28 1955-01-28 Variable magnification optical system Expired FR1120692A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1120692T 1955-01-28

Publications (1)

Publication Number Publication Date
FR1120692A true FR1120692A (en) 1956-07-10

Family

ID=9631634

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1120692D Expired FR1120692A (en) 1955-01-28 1955-01-28 Variable magnification optical system

Country Status (1)

Country Link
FR (1) FR1120692A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1108935B (en) * 1959-09-29 1961-06-15 Rodenstock Optik G Optical system with variable focal length
DE1187825B (en) * 1962-12-01 1965-02-25 Agfa Ag Bright projection lens with variable focal length

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1108935B (en) * 1959-09-29 1961-06-15 Rodenstock Optik G Optical system with variable focal length
DE1187825B (en) * 1962-12-01 1965-02-25 Agfa Ag Bright projection lens with variable focal length

Similar Documents

Publication Publication Date Title
FR67970E (en) Variable focal length lens
CH326225A (en) Variable focal length optical device
FR1130371A (en) Wide angle optical system
FR1060514A (en) Variable focal length optical system
CH327354A (en) Fast telephoto lens
FR1167796A (en) Continuously variable focal length optical system
FR1202180A (en) Apparatus with adjustable optical system for corpuscular rays
FR1120692A (en) Variable magnification optical system
CH339394A (en) Photographic telephoto lens
FR1117690A (en) Variable focus lens
FR1143034A (en) Variable magnification mirror
FR1150483A (en) Variable focal length optical system
FR1159286A (en) Optical system
FR73199E (en) Variable magnification optical system
CH339753A (en) Photographic telephoto lens
FR1115136A (en) Ophthalmoscopic optical system
FR1123471A (en) Improvements to optical devices with variable focal length
FR1156830A (en) Variable power prism optical system
FR1089520A (en) Reflection optical system for microscope
CH338032A (en) Photographic telephoto lens
CH338312A (en) Photographic telephoto lens
FR1200781A (en) Wide angle optical system
FR1112429A (en) Optical lens
FR1156545A (en) Ophthalmoscopic optical system
FR1134767A (en) Anamorphic optical system