FR66987E - Focusing plate for photographic cameras - Google Patents

Focusing plate for photographic cameras

Info

Publication number
FR66987E
FR66987E FR66987DA FR66987E FR 66987 E FR66987 E FR 66987E FR 66987D A FR66987D A FR 66987DA FR 66987 E FR66987 E FR 66987E
Authority
FR
France
Prior art keywords
focusing plate
photographic cameras
photographic
cameras
focusing
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
Hans Ruehle
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.)
Zeiss Ikon AG
Original Assignee
Zeiss Ikon AG
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 Zeiss Ikon AG filed Critical Zeiss Ikon AG
Application granted granted Critical
Publication of FR66987E publication Critical patent/FR66987E/en
Expired 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)
FR66987D 1954-10-08 1954-10-08 Focusing plate for photographic cameras Expired FR66987E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR66987T 1954-10-08

Publications (1)

Publication Number Publication Date
FR66987E true FR66987E (en) 1957-11-04

Family

ID=8699247

Family Applications (1)

Application Number Title Priority Date Filing Date
FR66987D Expired FR66987E (en) 1954-10-08 1954-10-08 Focusing plate for photographic cameras

Country Status (1)

Country Link
FR (1) FR66987E (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2550351A1 (en) * 1983-08-02 1985-02-08 Pentacon Dresden Veb Fresnel focus plate for SLR camera

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2550351A1 (en) * 1983-08-02 1985-02-08 Pentacon Dresden Veb Fresnel focus plate for SLR camera

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