CH108091A - Cinematograph for recording and playback. - Google Patents
Cinematograph for recording and playback.Info
- Publication number
- CH108091A CH108091A CH108091DA CH108091A CH 108091 A CH108091 A CH 108091A CH 108091D A CH108091D A CH 108091DA CH 108091 A CH108091 A CH 108091A
- Authority
- CH
- Switzerland
- Prior art keywords
- recording
- cinematograph
- playback
- absorbs
- short
- Prior art date
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)
- Projection-Type Copiers In General (AREA)
Description
ginematogr aph zur Aufnahme und Wiedergabe. Die Erfindung betrifft einen Kinemato- graphen, der sowohl zum Aufnehmen, wie zur Wiedergabe dienen kann.
Es ist bekannt, .dass die Filmschalt- und Filmstillstandszeiten, folglich die Verdunk- lungs- und Belichtungszeiten bei Wiedergabe apparaten von denen bei Aufnahmeapparaten ganz bedeutend abweichen. Bei der Wieder gabe ist man bestrebt, .die Stillstandszeit möglichst gross, die Schaltdauer möglichst klein zu machen, um eine grosse Lichtaus beute zu erreichen.
Beim Aufnehmen von Bildern dagegen wird eine möglichst kurze Belichtungsdauer und damit kurze Still standszeit des belichteten Files erstrebt, um äusserst scharfe Bilder zu erhalten. Ein Apparat, der zur Aufnahme und zur Wie dergabe gleich gut benutzt werden kann, muss diese sieh widersprechenden Bedingungen tatsächlich erfüllen können.
Gemäss der Erfindung wird dies durch einen Kinematographen erzielt, der eine mehrflügelige Verschlussscheibe besitzt, de ren zwischen den Flügeln liegenden Offnun- gen bis auf eine durch lichtdurchlässige, aber die aktivischen Strahlen absorbierende Kör- per überdeckt sind. Die Versthlussscheibe kann vorteilhaft so auf ihrer Welle befestigt sein,
dass bei der Aufnahme die nicht be deckte Öffnung als erste nach erfolgter Film schaltung am Bildfenster vorübergeht.
Als Farbe der absorbierenden Körper wird vorteilhaft eine Lösung von Aurantium benutzt, denn die .damit erzielte Färbung ab sorbiert die violetten, ultravioletten und blauen, .d. h. die am meisten aktivisch wirken den Strahlen.
ginematogr aph for recording and playback. The invention relates to a cinematograph which can be used both for recording and for reproduction.
It is known that the film switching and film downtimes, and consequently the darkening and exposure times, differ quite significantly in playback devices from those in recording devices. When reproducing, the aim is to make the downtime as long as possible and the switching time as short as possible in order to achieve a large amount of light.
When taking pictures, on the other hand, the aim is to keep the exposure time as short as possible and therefore to keep the exposed file as short as possible, in order to obtain extremely sharp pictures. An apparatus that can be used equally well for recording and playback must actually be able to meet these contradicting conditions.
According to the invention, this is achieved by a cinematograph which has a multi-wing closure disk, the openings of which between the wings are covered, apart from one, by a body which is transparent but absorbs the active rays. The locking disc can advantageously be attached to its shaft in such a way that
that the uncovered opening is the first to pass the picture window after the film has been switched.
A solution of aurantium is advantageously used as the color of the absorbent body, because the color obtained with it absorbs the violet, ultraviolet and blue, .d. H. the most active act the rays.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH108091T | 1923-09-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH108091A true CH108091A (en) | 1924-12-01 |
Family
ID=4367084
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH108091D CH108091A (en) | 1923-09-25 | 1923-09-25 | Cinematograph for recording and playback. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH108091A (en) |
-
1923
- 1923-09-25 CH CH108091D patent/CH108091A/en unknown
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