FR983129A - Dispositif optique afocal à grossissement variable - Google Patents

Dispositif optique afocal à grossissement variable

Info

Publication number
FR983129A
FR983129A FR983129DA FR983129A FR 983129 A FR983129 A FR 983129A FR 983129D A FR983129D A FR 983129DA FR 983129 A FR983129 A FR 983129A
Authority
FR
France
Prior art keywords
optical device
variable magnification
afocal optical
magnification afocal
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
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.)
Societe dOptique et de Mecanique de Haute Precision
Original Assignee
Societe dOptique et de Mecanique de Haute Precision
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 Societe dOptique et de Mecanique de Haute Precision filed Critical Societe dOptique et de Mecanique de Haute Precision
Application granted granted Critical
Publication of FR983129A publication Critical patent/FR983129A/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
    • G02B15/144105—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)
FR983129D 1949-01-28 1949-01-28 Dispositif optique afocal à grossissement variable Expired FR983129A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR983129T 1949-01-28

Publications (1)

Publication Number Publication Date
FR983129A true FR983129A (fr) 1951-06-19

Family

ID=9535864

Family Applications (1)

Application Number Title Priority Date Filing Date
FR983129D Expired FR983129A (fr) 1949-01-28 1949-01-28 Dispositif optique afocal à grossissement variable

Country Status (1)

Country Link
FR (1) FR983129A (fr)

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