DE821604C - A film presentation device consisting of a projection device and a projection surface, in particular a single-housing film viewer - Google Patents

A film presentation device consisting of a projection device and a projection surface, in particular a single-housing film viewer

Info

Publication number
DE821604C
DE821604C DEZ341A DEZ0000341A DE821604C DE 821604 C DE821604 C DE 821604C DE Z341 A DEZ341 A DE Z341A DE Z0000341 A DEZ0000341 A DE Z0000341A DE 821604 C DE821604 C DE 821604C
Authority
DE
Germany
Prior art keywords
film
projection
projection surface
light source
housing
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
DEZ341A
Other languages
German (de)
Inventor
Rudolf Taesler
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.)
Zeiss Ikon AG
Original Assignee
Zeiss Ikon AG
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 Zeiss Ikon AG filed Critical Zeiss Ikon AG
Priority to DEZ341A priority Critical patent/DE821604C/en
Application granted granted Critical
Publication of DE821604C publication Critical patent/DE821604C/en
Expired legal-status Critical Current

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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface
    • G03B21/62—Translucent screens
    • 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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor

Description

Die Erfindung betrifft ein aus einem Projektionsgerät und einer Projektionsfläche bestehendesFilmvorführgerät, insbesondere einen eingehäusigen Filmbetrachter. Sie besteht darin, daß die Einzelbilder des gleichförmig durchlaufenden Filmstreifens von einer Lichtquelle (Quecksilberdampflampe) mittels einer im Gleichtakt mit der Bildfolge auf dem Filmstreifen angetriebenen Schlitz-Llende auf die mit einer nachleuchtenden Schicht belegte Projektionsfläche projiziert werden.The invention relates to a projection device and a projection surface existing film projection apparatus, particularly an enclosed film viewer. she consists in that the individual images of the uniformly continuous film strip from a light source (mercury vapor lamp) by means of a in phase with the Sequence of images on the film strip driven slit-end on the with a luminescent Layer occupied projection surface are projected.

Eine andere Möglichkeit, die sich grundsätzlich im Rahmen der Erfindung bewegt, ist die, daß an Stelle von konstanter Lichtquelle und Blende eine in entsprechendem Takte diskontinuierlich aufleuchtende Lichtquelle tritt.Another possibility, which is basically within the scope of the invention moves, is that instead of constant light source and diaphragm one in a corresponding Pulses intermittently flashing light source occurs.

Gegenüber den gebräuchlichen Vorführgeräten mit mechanischem oder optischem Ausgleich hat die Einrichtung nach der Erfindung wesentliche Vorteile. Einmal werden die Teile der Ausgleichsoptik oder die Antriebsteile für den ruckartigen Filmtransport eingespart, was die Erfindung für eingehäusige Filmbetrachter besonders geeignet macht. Zum anderen werden durch das Nachleuchten der Projektionsfläche die Dunkelpausen wesentlich eingeschränkt, so daß das lästige Flimmern des Bildes vermieden wird. Durch das allmähliche Ausklingen der Leuchtwirkung der Fläche gehen vielmehr die Einzelbilder unmerklich ineinander über, und ein ungestörtes und ermüdungsfreies Betrachten der Vorführung ist möglich.Compared to the common demonstration devices with mechanical or The device according to the invention has significant advantages in terms of optical compensation. Once the parts of the compensating optics or the drive parts for the jerky Saved film transport, what the invention for single-housing film viewers in particular makes suitable. On the other hand, the afterglow of the projection surface the dark pauses are considerably restricted, so that the annoying flickering of the picture is avoided. Walk through the gradual fading of the luminous effect of the surface rather, the individual images imperceptibly merge into one another, and an undisturbed and fatigue-free one Viewing the demonstration is possible.

In der Zeichnung ist ein Schema für ein Ausführungsbeispiel der Erfindung wiedergegeben. Die Quecksilberdampflampe i wirft ihr Licht durch die umlaufende Trommelblende 2 auf den Filmstreifen 3. Das Bild wird so durch die Optik 4 auf die z. B. als Sammellinse ausgebildete Projektionsfläche 5 geworfen. Die Fläche ist mit einem Belag 6 aus nachleuchtendem Stoff versehen. Die Trommelblende 2 wird im Gleichtakt mit dem Filmstreifen 3 so angetrieben, daß dieser jeweils in dem Augenblick von dem Lichtstrahl getroffen wird, in dem sich ein Einzelbild gerade richtig im Bildfenster befindet. Durch das Nachleuchten der Projektionsfläche gehen die aufeinanderfolgenden Einzelbilder unmerklich ineinander über. An die Stelle der Trommelblende kann auch z. B. eine Scheibenschlitzblende treten. Auch kann die konstante Lichtquelle i mit Blende 2 durch eine im richtigen Takt diskontinuierlich aufleuchtende Lichtquelle ersetzt werden. In beiden Fällen muß die Belichtung so kurz sein, daß die Bildwanderung auf der Projektionsfläche nicht störend in Erscheinung tritt.In the drawing is a scheme for an embodiment of the invention reproduced. The mercury vapor lamp i casts its light through the surrounding one Drum diaphragm 2 on the film strip 3. The image is so through the optics 4 on the z. B. formed as a collecting lens projection surface 5 thrown. The area is provided with a covering 6 made of luminescent material. The drum screen 2 is in Simultaneously with the film strip 3 driven so that this in each case at the moment is hit by the light beam in which a single image is just right in the Image window is located. The successive ones go through the afterglow of the projection surface Individual images merge imperceptibly. In place of the drum diaphragm can also z. B. step a disk slot diaphragm. The constant light source i can also be used Aperture 2 by a light source that lights up discontinuously in the correct cycle be replaced. In both cases the exposure must be so short that the image wanders does not appear disturbing on the projection surface.

Claims (2)

PATENTANSPRÜCHE: i. Aus einem Projektionsgerät und einer Projektionsfläche bestehendes Filmvorführgerät, insbesondere eingehäusiger Filmbetrachter, dadurch gekennzeichnet, daß die Einzelbilder des gleichförmig durchlaufenden Filmstreifens (3) von einer Lichtquelle (Quecksilberdampflampe i) mittels einer im Gleichtakt mit dem Filmstreifen angetriebenen Schlitzblende (2) auf die mit einer nachleuchtenden Schicht (6) belegte Projektionsfläche (5) projiziert werden. PATENT CLAIMS: i. From a projection device and a projection surface existing film projection device, in particular a single-housing film viewer, thereby characterized in that the individual images of the uniformly continuous film strip (3) from a light source (mercury vapor lamp i) by means of a in common mode with the film strip driven slit diaphragm (2) on the with a luminescent Layer (6) occupied projection surface (5) are projected. 2. Filmvorführgerät nach Anspruch i, mit der Maßgabe, daß an Stelle von konstanter Lichtquelle und Blende eine in entsprechendem Takt diskontinuierlich aufleuchtende Lichtquelle vorgesehen ist.2. Projection device according to claim i, with the proviso that instead of constant light source and diaphragm a light source that lights up discontinuously in a corresponding cycle is provided is.
DEZ341A 1950-03-10 1950-03-10 A film presentation device consisting of a projection device and a projection surface, in particular a single-housing film viewer Expired DE821604C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEZ341A DE821604C (en) 1950-03-10 1950-03-10 A film presentation device consisting of a projection device and a projection surface, in particular a single-housing film viewer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEZ341A DE821604C (en) 1950-03-10 1950-03-10 A film presentation device consisting of a projection device and a projection surface, in particular a single-housing film viewer

Publications (1)

Publication Number Publication Date
DE821604C true DE821604C (en) 1951-11-19

Family

ID=7617665

Family Applications (1)

Application Number Title Priority Date Filing Date
DEZ341A Expired DE821604C (en) 1950-03-10 1950-03-10 A film presentation device consisting of a projection device and a projection surface, in particular a single-housing film viewer

Country Status (1)

Country Link
DE (1) DE821604C (en)

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