AT81834B - Focal plane shutter for photographic recording devices used for taking pictures of the terrain from an aircraft. - Google Patents
Focal plane shutter for photographic recording devices used for taking pictures of the terrain from an aircraft.Info
- Publication number
- AT81834B AT81834B AT81834DA AT81834B AT 81834 B AT81834 B AT 81834B AT 81834D A AT81834D A AT 81834DA AT 81834 B AT81834 B AT 81834B
- Authority
- AT
- Austria
- Prior art keywords
- terrain
- focal plane
- aircraft
- plane shutter
- recording devices
- Prior art date
Links
Landscapes
- Shutters For Cameras (AREA)
Description
<Desc/Clms Page number 1>
Schlitzverschluss für der Geländeaufnahme vom Flugzeug aus dienende photographische
Aufnahmegeräte.
Für Geländeaufnahmen vom Flugzeug aus gemäss Erfindung kommt es darauf an. einen möglichst breiten Geländestreifen während eines Fluges zu photographieren. Die Objektive zeichnen jedoch bisher, zufolge der Anwendung der am Objektiv vorbeischnellenden Schlitzbelichtung, Bilder auf, die an den beiden seitlichen Rändern lichtschwächer sind.
Um den bei Ausnutzung eines sehr grossen Bildwinkels sich ergebenden Belichtungunterschied für derartige Reihenbilder auszugleichen und Bilder mit gleichmässiger Lichtstärke der ganzen Bildfläche zu erzielen. wird gemäss der Erfindung der Schlitz des unmittelbar vor der Platte oder dem Film ablaufenden Momentverschlusses nach aussen nach den beiden Enden hin entsprechend erweitert.
Ein Ausführungsbeispiel ist durch die Zeichnung schematisch dargestellt, wobei angenommen ist, dass es sich um e : ne Rollfilmkamera handelt. a bezeichnet den Film, b den Schlitzverschluss und c den Schlitz, der in der Richtung nach beiden Seiten hin sich erweitert, also nicht mehr die normale, strichpunktiert angedeutet Gestalt eines langgezogenen Rechtecks aufweist. Mit 1 ist die Bewegungsrichtung des Verschlusses, mit 2 die Flugrichtung und mit 3 die Ahrollrichtung des Films angedeutet.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Focal plane shutter for taking photos of the terrain from the aircraft
Recording devices.
This is what matters for taking terrain from the aircraft according to the invention. photograph as wide a strip of terrain as possible during a flight. However, the lenses have so far recorded images that are fainter on the two side edges, due to the use of the slit exposure that flies past the lens.
In order to compensate for the difference in exposure resulting from the utilization of a very large image angle for such series images and to achieve images with a uniform light intensity over the entire image area. According to the invention, the slot of the moment lock running immediately in front of the plate or the film is widened accordingly to the outside towards the two ends.
An exemplary embodiment is shown schematically in the drawing, it being assumed that it is a roll film camera. a denotes the film, b the focal plane shutter and c the slit that widens in the direction towards both sides, i.e. no longer has the normal shape of an elongated rectangle, indicated by dash-dotted lines. 1 indicates the direction of movement of the shutter, 2 indicates the direction of flight and 3 indicates the rolling direction of the film.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE80110X | 1915-06-05 | ||
DE81834X | 1916-09-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT81834B true AT81834B (en) | 1920-12-10 |
Family
ID=25749721
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT81834D AT81834B (en) | 1915-06-05 | 1918-06-17 | Focal plane shutter for photographic recording devices used for taking pictures of the terrain from an aircraft. |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT81834B (en) |
-
1918
- 1918-06-17 AT AT81834D patent/AT81834B/en active
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