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
Application number
Other languages
German (de)
Inventor
Beck Jakob
Original Assignee
Beck Jakob
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 Beck Jakob filed Critical Beck Jakob
Publication of CH94713A publication Critical patent/CH94713A/en

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B31/00Associated working of cameras or projectors with sound-recording or sound-reproducing means
    • G03B31/02Associated 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)

PATENTANSPRUCH: Kinematographische Projektionsvorrich tung, dadurch gekennzeichnet, dass eine Ab- Lenkungsvorrichtung für vom zu projizierenden Film ausgehende Lichtstrahlen angeordnet ist, tirri die Filmvorführung begleitende Laute dirigierende Leitbilder dorthin projizieren zu können, wo deren Projektionsbild dem Publi- kurv pusichtbar ist, von den bei der Film vorführung Mitwirkenden aber gesehen werden kann. PATENT CLAIM: Cinematographic projection device, characterized in that a deflecting device is arranged for the light rays emanating from the film to be projected, tirri the sounds accompanying the film can be projected to where their projection image is visible to the public, from those at the Film showing contributors though can be seen.
CH94713D 1918-08-03 1921-01-03 Cinematographic projection device. CH94713A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3847471A (en) * 1972-03-30 1974-11-12 F Lindner Rotating prism for projectors

Cited By (1)

* Cited by examiner, † Cited by third party
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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