FR1389678A - Viseur à transparence, à distance focale variable - Google Patents

Viseur à transparence, à distance focale variable

Info

Publication number
FR1389678A
FR1389678A FR962009A FR962009A FR1389678A FR 1389678 A FR1389678 A FR 1389678A FR 962009 A FR962009 A FR 962009A FR 962009 A FR962009 A FR 962009A FR 1389678 A FR1389678 A FR 1389678A
Authority
FR
France
Prior art keywords
focal length
variable focal
transparent viewfinder
viewfinder
transparent
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
FR962009A
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.)
Pentacon GmbH Foto und Feinwerktechnik
Original Assignee
Pentacon Dresden VEB
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 Pentacon Dresden VEB filed Critical Pentacon Dresden VEB
Priority to FR962009A priority Critical patent/FR1389678A/fr
Application granted granted Critical
Publication of FR1389678A publication Critical patent/FR1389678A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/14—Viewfinders
    • 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
FR962009A 1964-01-29 1964-01-29 Viseur à transparence, à distance focale variable Expired FR1389678A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR962009A FR1389678A (fr) 1964-01-29 1964-01-29 Viseur à transparence, à distance focale variable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR962009A FR1389678A (fr) 1964-01-29 1964-01-29 Viseur à transparence, à distance focale variable

Publications (1)

Publication Number Publication Date
FR1389678A true FR1389678A (fr) 1965-02-19

Family

ID=8822021

Family Applications (1)

Application Number Title Priority Date Filing Date
FR962009A Expired FR1389678A (fr) 1964-01-29 1964-01-29 Viseur à transparence, à distance focale variable

Country Status (1)

Country Link
FR (1) FR1389678A (fr)

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