DE526922C - Slide projection device for cinematographic demonstration apparatus - Google Patents

Slide projection device for cinematographic demonstration apparatus

Info

Publication number
DE526922C
DE526922C DEA41496D DEA0041496D DE526922C DE 526922 C DE526922 C DE 526922C DE A41496 D DEA41496 D DE A41496D DE A0041496 D DEA0041496 D DE A0041496D DE 526922 C DE526922 C DE 526922C
Authority
DE
Germany
Prior art keywords
slide
cinema
cinematographic
projection device
image
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
DEA41496D
Other languages
German (de)
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
Publication date
Priority to DEA41496D priority Critical patent/DE526922C/en
Application granted granted Critical
Publication of DE526922C publication Critical patent/DE526922C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00Optical elements characterised by the material of which they are made; Optical coatings for optical elements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Projection Apparatus (AREA)

Description

Dia-Projektionseinrichtung für kinematographische Vorführungsapparate Die meisten kinematographischen Vorführungsapparate sind so eingerichtet, daß außer dem laufenden Bild auch stehende Bilder in den verschiedensten Größen projiziert werden können. Zu diesem Zweck sind Einrichtungen bekannt, bei denen zu der Dia-Projektion direkt das Isinoobjektiv verwendet wird unter Benutzung der gleichen Lichtquelle und des gleichen Strablenbündels wie zur Kinoprojektion. Hierbei wird entweder das vor den Kinokondensor gebrachte Dia-Bild durch ein Zwischensystem in das Kinobildfenster abgebildet oder die Brennweite des Kinoobjektivs durch ein Zusatzsystem so verändert, daß das im Kinokondensor befindliche Dia-Bild auf der Projektionswand scharf abgebildet wird. Bei diesen Einrichtungen ist jedoch der Nachteil vorhanden, daß der zur Kinoprojektion benutzte Kondensor so groß sein muß, daß er auch das Dia-Bild ausleuchtet. Bei kleineren Kinoapparaten ist es jedoch aus konstruktiven Gründen häufig geboten, den Kinokondensor klein zu wählen.Slide projection device for cinematographic demonstration apparatus Most cinematographic projection apparatus are set up so that besides The current image also projects images of various sizes that are stationary can be. For this purpose devices are known in which the slide projection the isino lens is used directly using the same light source and the same bundle of strings as for cinema projection. Here either the Slide picture brought in front of the cinema condenser through an intermediate system into the cinema picture window imaged or the focal length of the cinema lens changed by an additional system in such a way that that the slide image located in the cinema condenser is shown sharply on the projection wall will. In these devices, however, there is the disadvantage that that for cinema projection The condenser used must be so large that it also illuminates the slide image. With smaller ones For structural reasons, however, it is often necessary for cinema apparatus to use the cinema condenser choose small.

Um auch bei solchen Apparaten eine Dia-Projektion möglich zu machen, ist er$ndungsgemäß ein zur Abbildung des Dia-Bildes dienendes optisches System, bestehend aus einem Kondensor und einem Objektiv, hinter dem Bildfenster des Kinoapparates angeordnet, so daß die Beleuchtung des Dia-Bildes durch das Bildfenster hindurch erfolgt. Damit die Ausleuchtung des Dia-Bildes vollkommen geschieht, wird es unter Umständen zweckmäßig sein., zwischen den Kondensor und das Kinoobjektiv noch ein optisches Glied einzuschalten.In order to make a slide projection possible with such devices, according to the invention is an optical system used to display the slide image, consisting of a condenser and an objective, behind the picture window of the cinema apparatus arranged so that the illumination of the slide image through the image window he follows. To ensure that the slide image is fully illuminated, it is below Circumstances be appropriate., Between the condenser and the cinema lens another turn on the optical link.

In der Abbildung ist die Einrichtung schematisch dargestellt. Es bedeutet i die Lichtquelle, a den Kinokondensor, 3 das Kinobildfenster, q. das Kinoobjektiv. Von letzterem fallen die Strahlen zunächst auf das optische Zwischenglied, in diesem Falle eine Negativlinse 5, die die Streuung des Lichtbündels vergrößert, so daß der Dia-Kondensor 6 und das Dia-Bild 7 voll ausgeleuchtet werden. Der Kondensor 6 vereinigt alsdann die Lichtstrahlen in dem Dia-Objektiv B.The device is shown schematically in the figure. It means i the light source, a the cinema condenser, 3 the cinema picture window, q. the cinema lens. From the latter, the rays first fall on the optical link, in this Trap a negative lens 5, which increases the scattering of the light beam, so that the slide condenser 6 and the slide image 7 are fully illuminated. The condenser 6 then combines the light rays in the slide objective B.

Claims (1)

PATENTANSPRÜCHE: i. Dia-Projektionseinrichtung für kinematographische Vorführungsapparateunter Benutzung der gleichen Lichtquelle und des gleichen Strahlenbündels, dadurch gekennzeichnet, daß das Dia-Bild sowie die zu dessen Abbildung dienenden optischen Systeme hinter dem Bildfenster des Kinoapparates angeordnet sind, so daß die Beleuchtung des Dia-Bildes durch das Bildfenster hindurch erfolgt. z. Dia-Projektionseinrichtung für kinematographische Vorführungsapparate nach Anspruch i, dadurch gekennzeichnet, daß in. das aus dem Kinoobjektiv austretende Strahlenbündel ein optisches Zusatzsystem eingeschaltet äst, um die volle und günstigste Ausleuchtung des Dia-Bildes zu erzielen.PATENT CLAIMS: i. Slide projection device for cinematographic Demonstration apparatus using the same light source and the same beam, characterized in that the slide image as well as those used for its illustration optical systems are arranged behind the picture window of the cinema apparatus, so that the slide image is illuminated through the image window. z. Slide projection device for cinematographic projection apparatus according to claim i, characterized in that that in. The beam emerging from the cinema lens is an additional optical system switched on in order to achieve the full and best possible illumination of the slide image.
DEA41496D Slide projection device for cinematographic demonstration apparatus Expired DE526922C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA41496D DE526922C (en) Slide projection device for cinematographic demonstration apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA41496D DE526922C (en) Slide projection device for cinematographic demonstration apparatus

Publications (1)

Publication Number Publication Date
DE526922C true DE526922C (en) 1931-06-12

Family

ID=6932564

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA41496D Expired DE526922C (en) Slide projection device for cinematographic demonstration apparatus

Country Status (1)

Country Link
DE (1) DE526922C (en)

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