DE198569C - - Google Patents

Info

Publication number
DE198569C
DE198569C DENDAT198569D DE198569DA DE198569C DE 198569 C DE198569 C DE 198569C DE NDAT198569 D DENDAT198569 D DE NDAT198569D DE 198569D A DE198569D A DE 198569DA DE 198569 C DE198569 C DE 198569C
Authority
DE
Germany
Prior art keywords
arms
frame
mirror
collapsible
image
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.)
Active
Application number
DENDAT198569D
Other languages
German (de)
English (en)
Publication of DE198569C publication Critical patent/DE198569C/de
Active legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/18—Focusing aids
    • G03B13/24—Focusing screens
    • G03B13/26—Focusing screens with magnifiers for inspecting image formed on screen

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
DENDAT198569D Active DE198569C (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
DE198569C true DE198569C (enrdf_load_stackoverflow)

Family

ID=461355

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT198569D Active DE198569C (enrdf_load_stackoverflow)

Country Status (1)

Country Link
DE (1) DE198569C (enrdf_load_stackoverflow)

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