DE352485C - Demonstration cinema - Google Patents
Demonstration cinemaInfo
- Publication number
- DE352485C DE352485C DENDAT352485D DE352485DD DE352485C DE 352485 C DE352485 C DE 352485C DE NDAT352485 D DENDAT352485 D DE NDAT352485D DE 352485D D DE352485D D DE 352485DD DE 352485 C DE352485 C DE 352485C
- Authority
- DE
- Germany
- Prior art keywords
- demonstration
- cinema
- light source
- condenser
- fan
- 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
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
- G03B9/00—Exposure-making shutters; Diaphragms
- G03B9/08—Shutters
- G03B9/10—Blade or disc rotating or pivoting about axis normal to its plane
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Labeling Devices (AREA)
- Stroboscope Apparatuses (AREA)
Description
lea Akt-Ges. Dresden in Dresden.lea Akt-Ges. Dresden in Dresden.
Vorführungskino. Patentiert im Deutschen Reiche vom 22. Februar 1921 ab. Projection cinema. Patented in the German Empire on February 22, 1921.
Es ist bei Vorfuhrungskmerniatographen bekannt, den Verschluß, die sog. »Blende«, zwischen Lichtquelle und Kondensor anzuordnen; auch ist bekannt, den Verschluß ate Ventilator vor dem Objektiv oder vor dem Bildfenster wirken zu lassen.It is with demonstration kerniatographs known to arrange the shutter, the so-called "diaphragm", between the light source and the condenser; Also known is the shutter ate fan in front of the lens or in front of the Let the image window work.
In der Erfindung ist die Anordnung des Verschlusses b zwischen der Lichtquelle a und dem Kondensor c, und zwar nahe der to Lichtquelle, vorgesehen, und es ist die Verschlußscheibe gleichzeitig als Ventilator ausgebildet. Diese Anordnung und Wirkungs- \ weise der Scheibe b hat gegenüber den bis jetzt bekannten Einrichtungen den Vorteil, j daß der Ventilator die erwärmte Luft direkt von der Lichtquelle wegnimmt, so daß die kalte Luft in Richtung der Lichtquelle gepreßt und die erwärmte Luft von der Lichtquelle entfernt wird, ehe sie mit dem Kondensor und der Filmfühsrung in Berührung kommen kann.In the invention, the arrangement of the closure b between the light source a and the condenser c, specifically near the light source, is provided, and the closure disc is designed as a fan at the same time. This arrangement and mode \ as has b of the disc with respect to the up to now known devices the advantage of j that the fan removes the heated air directly from the light source so that the cold air pressed in the direction of the light source and the heated air from the light source removed before it can come into contact with the condenser and the film guide.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE352485T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE352485C true DE352485C (en) | 1922-04-29 |
Family
ID=6275551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT352485D Expired DE352485C (en) | Demonstration cinema |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE352485C (en) |
-
0
- DE DENDAT352485D patent/DE352485C/en not_active Expired
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