DE947851C - Image stage for stereo roll film devices - Google Patents

Image stage for stereo roll film devices

Info

Publication number
DE947851C
DE947851C DEA18121A DEA0018121A DE947851C DE 947851 C DE947851 C DE 947851C DE A18121 A DEA18121 A DE A18121A DE A0018121 A DEA0018121 A DE A0018121A DE 947851 C DE947851 C DE 947851C
Authority
DE
Germany
Prior art keywords
picture
film
stage
windows
roll film
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
Application number
DEA18121A
Other languages
German (de)
Inventor
Robert Anderle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEA18121A priority Critical patent/DE947851C/en
Application granted granted Critical
Publication of DE947851C publication Critical patent/DE947851C/en
Expired legal-status Critical Current

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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
    • G03B35/00Stereoscopic photography
    • G03B35/08Stereoscopic photography by simultaneous recording
    • G03B35/10Stereoscopic photography by simultaneous recording having single camera with stereoscopic-base-defining system

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)

Description

Es sind Bildbühnen mit zwei Bildfenstern für Stereo-Rollfilm-Geräte bekannt, bei denen der Film kanalartig unter Bildung einer den Bildabstand zwischen den Bildfenstern ausgleichenden Schleife auf Vorder- und Rückseite von einem Fenster zum andern geführt wird.They are picture stages with two picture windows for stereo roll film devices known, in which the film is channel-like with the formation of a picture distance between the picture window balancing loop on the front and back of a window is led to the other.

Die Erfindung hat zur Aufgabe, eine solche Yührung durch Rücksichtnahme auf die elastischen Eigenschaften des Films zu vervollkommnen. Ruht nämlich .der Film längere Zeit in der Schleife, so kann der Fall eintreten, daß er infolge der angenommengn, Schleifenform den Vorschub erheblich bremst, wenn die Führung nicht so beschaffen ist, daß der Film nicht in der .durch seine elastischen Eigenschaften bedingten natürlichen Verformung in der Führung ruht.The invention has for its object to be carried out with consideration to perfect the elastic properties of the film. Namely, the If the film is in the loop for a long time, it may happen that it is as a result of the assumed that the loop shape slows the feed rate considerably if the guide does not is such that the film is not in the .by its elastic properties conditional natural deformation in the guide rests.

Zugleich soll dabei die Führung so ausgebildet sein, daß der Film lediglich idurch Einschieben, in seiner Längsrichtung leicht einzuführen ist.At the same time, the guide should be designed so that the film is easy to insert in its longitudinal direction only by pushing it in.

Erreicht wird dies dadurch, daß gemäß der Erfindung sich die Bildbühne durchgehend über beide Bildfenster erstreckt und zur Schleifenbildung aus drei in der Filmlaufrichtung tangential sowohl ineinander wie auch in die geraden Fensterbereiche übergehenden Kreisbogenteilen besteht.This is achieved in that, according to the invention, the picture stage extends continuously over both image windows and forms a loop of three in the film direction tangential both into each other and into the straight window areas passing circular arcs consists.

Ein Ausführungsbeispiel gibt die Zeichnung wieder. Abb. i zeigt schematisch eine Stereokamera mit der erfindungsgemäßen Bildbühne und Abb. 2 dieselbe in einer Teilansicht.The drawing shows an exemplary embodiment. Fig. I shows schematically a stereo camera with the image stage according to the invention and Fig. 2 the same in one Partial view.

Die Bildbühne besteht nach der Abb. i aus dem Oberteil 4 und dem Unterteil 5. Bei Verwendung einer solchen Bildbühne in einer Stereo-Rollfilm-Kamera ist nur das Oberteil 4 mit Bildfenstern versehen; bei anderen Geräten, z. B. Stereo-Betrachtern und Stereo-Bildwerfern, weisen dagegen Oberteil 4 sowohl wie -auch Unterteil 5 Bildfenster auf (Abb. 2) .According to Fig. I, the picture stage consists of the upper part 4 and the lower part 5. When using such a picture stage in a stereo roll film camera is only the upper part 4 is provided with picture windows; with other devices, e.g. B. Stereo viewers and stereo image projectors, on the other hand, have upper part 4 as well as lower part 5 image windows on (Fig. 2).

Von den geraden Fensterbereichen gehen tangential die Kreisbogenteile i, 3 weg und laufen ebenfalls wieder tangential in den mittleren Teil :2 ein. Seitlich sind Ober- und Unterteil bei 7 und Z' miteinander verbunden, so daß so ein durchgehender Filmkanal entsteht, in den der Film in seiner Längsrichtung einzuführen ist.The arc parts go tangentially from the straight window areas i, 3 away and also run tangentially into the middle part: 2 again. Laterally are upper and lower part at 7 and Z 'connected to each other, so that a continuous The result is a film channel into which the film is to be inserted in its longitudinal direction.

Im Querschnitt sind nach Abb. 2 sowohl im Oberteil 4 wie- im Unterteil 5 Vertiefungen 6, 6' vorgesehen.In cross-section are shown in Fig. 2 both in the upper part 4 and in the lower part 5 wells 6, 6 'provided.

Um die Reibung des Films an den Kanalwänden des mittleren Kreisbogenteils 2 -der Schleife zu verringern, ist dort eine ihrer Krümmung angepaßte Rolle 8 nach Abb. i angeordnet, welche den Film dort an Stelle der unterbrochenen Kanalwand übernimmt. Die Rolle 8 kann mit ider Perforation angepaßten Zähnen versehen sein und zugleich als Bildzählrolle dienen.About the friction of the film on the channel walls of the central part of the arc 2 to reduce the loop, there is a roller 8 adapted to its curvature Fig. I, which takes over the film there in place of the interrupted canal wall. The roller 8 can be provided with teeth adapted to the perforation and at the same time serve as a picture counting roller.

Claims (1)

PATENTANSPRÜCHE: i. Bildbühne für Stereo-Rollfilm-Geräte mit zwei Bildfenstern, welche kanalartig den Film unter Bildung einer den Bildabstand zwischen den Bildfenstern ausgleichenden Schleife auf Vorder- und Rückseite führt, dadurch gekennzeichnet, daß sich die Bildbühne durchgehend über beide Bildfenster erstreckt und zur Schleifenbildung aus drei in der Filmlaufrichtung tangential sowohl ineinander wie auch in die geraden Fensterbereiche übergehenden Kreisbogenteilen besteht. 2: Bildbühne nach Anspruch i, dadurch gekennzeichnet, daß in dem mittleren kreisbogenförmigen Teil der Bildbühne eine dessen Krümmung angepaßte Leitrolle angeordnet ist, welche an Stelle der einen Bildbühnenwand dort die Filmführung übernimmt und vorzugsweise zugleich als Bildzählrolle dient. In Betracht gezogene Druckschriften: Französische Patentschrift Nr. 977 128; USA.-Patentschrift Nr. 2 385 804; deutsche Patentschrift Nr. 663 i84. PATENT CLAIMS: i. Picture stage for stereo roll film devices with two picture windows, which channel-like leads the film to the front and back with the formation of a loop compensating the picture distance between the picture windows, characterized in that the picture stage extends continuously over both picture windows and for the formation of loops from three in the running direction of the film is tangential both into one another and into the straight window areas. 2: The picture stage according to claim i, characterized in that a guide roller adapted to its curvature is arranged in the central circular arc-shaped part of the picture stage, which takes over the film guidance in place of the one wall of the picture stage and preferably also serves as a picture counting roller. Documents considered: French Patent No. 977 128; U.S. Patent No. 2,385,804; German patent specification No. 663 i84.
DEA18121A 1952-05-15 1952-05-15 Image stage for stereo roll film devices Expired DE947851C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA18121A DE947851C (en) 1952-05-15 1952-05-15 Image stage for stereo roll film devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA18121A DE947851C (en) 1952-05-15 1952-05-15 Image stage for stereo roll film devices

Publications (1)

Publication Number Publication Date
DE947851C true DE947851C (en) 1956-08-23

Family

ID=6924073

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA18121A Expired DE947851C (en) 1952-05-15 1952-05-15 Image stage for stereo roll film devices

Country Status (1)

Country Link
DE (1) DE947851C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1046475B (en) * 1954-01-11 1958-12-11 Stereocraft Engineering Co Stereo roll film camera

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE663184C (en) * 1938-07-30 Voigtlaender & Sohn Akt Ges Photographic recording chamber with a viewfinder
US2385804A (en) * 1941-08-15 1945-10-02 Fred Dobbs Camera
FR977128A (en) * 1951-03-28

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE663184C (en) * 1938-07-30 Voigtlaender & Sohn Akt Ges Photographic recording chamber with a viewfinder
FR977128A (en) * 1951-03-28
US2385804A (en) * 1941-08-15 1945-10-02 Fred Dobbs Camera

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1046475B (en) * 1954-01-11 1958-12-11 Stereocraft Engineering Co Stereo roll film camera

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