CH94713A - Cinematographic projection device. - Google Patents
Cinematographic projection device.Info
- Publication number
- CH94713A CH94713A CH94713DA CH94713A CH 94713 A CH94713 A CH 94713A CH 94713D A CH94713D A CH 94713DA CH 94713 A CH94713 A CH 94713A
- Authority
- CH
- Switzerland
- Prior art keywords
- projection
- film
- projection device
- cinematographic
- cinematographic projection
- Prior art date
Links
- 239000004020 conductor Substances 0.000 description 1
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
- G03B31/00—Associated working of cameras or projectors with sound-recording or sound-reproducing means
- G03B31/02—Associated working of cameras or projectors with sound-recording or sound-reproducing means in which sound track is on a moving-picture film
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
Description
Kinematographische Projektionsvorrichtung. Gegenstand vorliegender Erfindung ist eine kinematographische Projektionsvorrichtung. Dieselbe besitzt gemäss vorliegender Erfindung eine Ablenkungsvorrichtung für vom zu proji zierenden Film ausgehende Lichtstrahlen, um die Filmvorführung begleitende Laute diri gierende Leitbilder dorthin projizieren zu kön nen, wo deren Projektionsbild dem Publikum unsichtbar ist, von den bei der Filmvorfüh rung Mitwirkenden (z. B. Musikern, Sängern) aber gesehen werden kann.
Auf beiliegender Zeichnung ist der Er findungsgegenstand in zwei Ausführungsbei spielen dargestellt. a ist der Projektionskopf des Projektionsapparates. Die Lichtquelle be findet sich im rechteckigen Gehäuse g. o ist das Objektiv. In den Strahlengang zwischen dem Projektionskopf des Projektionsapparates und der Projektionsfläche b ist ein Prisma c eingeschaltet, welches die vom Leitbild, zum Beispiel vomBild des Kapellmeisters, kommen den Lichtstrahlen s, s' nach einer ausserhalb des Rahmens r, r' der Projektionsfläche lie genden Stelle p, <I>p'</I> ablenkt.
An der Stelle r', r2 der Projektionsfläche b erscheint in diesem Fall ein dunkler Fleck, der in irgend einer Weise, zum Beispiel durch Anbringung eines Ornamentes oder dergleichen, verkleidet sein kann.
Eine andere beispielsweise Ausführungs form zeigt Fig. 2 der Zeichnung. Der Spiegel S" reflektiert; da er im Gang der vom Leit bild L nach dem Objektiv o verlaufenden Strahlen angeordnet ist, vollständig das bei L im Filmfenster befindliche Leitbild nach dem Spiegel Sb, welcher es nach einem zwei ten Objektiv f' spiegelt, durch welches ein Projektionsbild des Leitbildes auf eine ausser halb des Rahmens r, r' der Projektionsfläche liegende Stelle q, q' geworfen wird.- Diese Ausführungsform bietet die Möglichkeit, das Leitbild auf eine zweite von b unabhängige Projektionsfläche projizieren zu können,
die in irgend einer geeigneten Entfernung vom .Projektionsapparat aufgestellt sein kann. Statt Spiegel könnten auch Prismen vorgesehen sein.
Cinematographic projection device. The present invention relates to a cinematographic projection device. According to the present invention, the same has a deflection device for light rays emanating from the film to be projected in order to be able to project guiding images that accompany the film showing, where their projection image is invisible to the audience, by those involved in the film showing (e.g. Musicians, singers) but can be seen.
In the accompanying drawing, the subject of the invention is shown in two embodiments. a is the projection head of the projection apparatus. The light source is located in the rectangular housing g. o is the lens. A prism c is inserted into the beam path between the projection head of the projection apparatus and the projection surface b, which sends the light rays s, s 'from the master image, for example from the image of the conductor, to a point outside the frame r, r' of the projection surface p, <I> p '</I> distracts.
In this case, a dark spot appears at the point r ', r2 of the projection surface b, which can be disguised in some way, for example by attaching an ornament or the like.
Another example embodiment is shown in FIG. 2 of the drawing. The mirror S "reflects; since it is arranged in the path of the rays running from the guide image L to the objective o, the guide image located at L in the film window is completely reflected by the mirror Sb, which reflects it after a second objective f ', through which a projection image of the model is thrown onto a point q, q 'outside the frame r, r' of the projection surface. This embodiment offers the possibility of being able to project the model onto a second projection surface independent of b,
which can be set up at any suitable distance from the projection apparatus. Instead of mirrors, prisms could also be provided.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE88892X | 1918-08-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH94713A true CH94713A (en) | 1922-05-16 |
Family
ID=5642510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH94713D CH94713A (en) | 1918-08-03 | 1921-01-03 | Cinematographic projection device. |
Country Status (3)
| Country | Link |
|---|---|
| AT (1) | AT88892B (en) |
| CH (1) | CH94713A (en) |
| FR (1) | FR530775A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3847471A (en) * | 1972-03-30 | 1974-11-12 | F Lindner | Rotating prism for projectors |
-
1920
- 1920-12-30 AT AT88892D patent/AT88892B/en active
-
1921
- 1921-01-03 CH CH94713D patent/CH94713A/en unknown
- 1921-01-13 FR FR530775D patent/FR530775A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3847471A (en) * | 1972-03-30 | 1974-11-12 | F Lindner | Rotating prism for projectors |
Also Published As
| Publication number | Publication date |
|---|---|
| FR530775A (en) | 1921-12-31 |
| AT88892B (en) | 1922-07-10 |
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