GB507314A - Improvements in or relating to photographic cameras - Google Patents

Improvements in or relating to photographic cameras

Info

Publication number
GB507314A
GB507314A GB355339A GB355339A GB507314A GB 507314 A GB507314 A GB 507314A GB 355339 A GB355339 A GB 355339A GB 355339 A GB355339 A GB 355339A GB 507314 A GB507314 A GB 507314A
Authority
GB
United Kingdom
Prior art keywords
photographic cameras
steenbergen
relating
lens
reflex
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
GB355339A
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.)
EMIL ENGLISCH
HUGO FRAUENSTEIN
JOHAN STEENBERGEN
OTTO DIEBEL
Original Assignee
EMIL ENGLISCH
HUGO FRAUENSTEIN
JOHAN STEENBERGEN
OTTO DIEBEL
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 EMIL ENGLISCH, HUGO FRAUENSTEIN, JOHAN STEENBERGEN, OTTO DIEBEL filed Critical EMIL ENGLISCH
Priority to GB355339A priority Critical patent/GB507314A/en
Publication of GB507314A publication Critical patent/GB507314A/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
    • G03B19/00—Cameras
    • G03B19/02—Still-picture cameras
    • G03B19/12—Reflex cameras with single objective and a movable reflector or a partly-transmitting mirror

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Glass Compositions (AREA)
  • Lenses (AREA)

Abstract

507,314. Reflex photographic cameras ; lenses. STEENBERGEN, J., DIEBEL, O., FRAUENSTEIN, H., ENGLISCH, E., SCHUBERT, H:, KOCH, C., (trading as IHAGEE KAMERAWERK STEENBERGEN & CO.). Nov. 22, 1938, No. 3553/39. Divided application. [Classes 97 (i) and 98 (i)] A finder lens for a reflex camera comprises it transparent body having a matt undersurface 3 on which is formed, by reflection at the mirror 4, the image to be viewed, and a spherical upper surface 2, the radius of which is substantially equal to the maximum thickness of the lens. A foldable viewing hood is provided comprising antomatically-opening walls 8, 9, 10.
GB355339A 1938-11-22 1938-11-22 Improvements in or relating to photographic cameras Expired GB507314A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB355339A GB507314A (en) 1938-11-22 1938-11-22 Improvements in or relating to photographic cameras

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB355339A GB507314A (en) 1938-11-22 1938-11-22 Improvements in or relating to photographic cameras

Publications (1)

Publication Number Publication Date
GB507314A true GB507314A (en) 1939-06-13

Family

ID=9760512

Family Applications (1)

Application Number Title Priority Date Filing Date
GB355339A Expired GB507314A (en) 1938-11-22 1938-11-22 Improvements in or relating to photographic cameras

Country Status (1)

Country Link
GB (1) GB507314A (en)

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