DE1685766U - SLIDE PROJECTOR. - Google Patents

Description

zu, Pa.4454 Stuttgart, 1st February 1-952

the Ϊ

Z eiss Iko η Ag., Stuttgart » ^: .":;: _ U.

concerning "-

. "'. " Slide projector "

The cinema advertising with slide glass images owns for the cinema theaters a not inconsiderable economic importance »Everyone

Theater owners and at the same time every client for such slides is therefore committed to the most effective possible use interested in this advertising material "

The theater-goer, on the other hand, perceives the presentation: ^ such :: pictures in many cases as an annoying addition, - 'die ^: näuf ig "hardly - ^I: observes j / ird. As it is, however, for economic reasons as well as for time-related reasons of the program design If it is not possible to convert all cinema advertising to the much more appealing advertising films, there is a need to increase the effect of the slide show «-..-- ■

The introduction of ambient lighting has proven to be a suitable means for this, «which enables an ornamented and / or colored environment for the slide projection transition auflokkerten the rigidity of the still-demonstration, tied the -Aufmerksamkeit of Beruchers and 27 / aneSläufig sine attention ^f ^ les-heritage achieved this.

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However, it should be mentioned as a disadvantage that the color game projector an independent device with its own light source represented ^ for its acquisition, in many cases the additional funds were missing and its installation next to the slide projector from spatial G-ründea was often not possible - - ^ -

The present hiring therefore deals with the task, * j

the same goal of creating an effective frame. ■ " \

the slide pictures äurc.h changing "calibration effects with the help of a .-- {

simple additional device "za-vorhanaenen Biar projectors. to \ ..;

achieve, whereby. "the'.additional." space requirement is insignificant and ■ '

the additional costs compared to "an independent device are low

According to the price increase, "cDaJaTUia-Bxldes * 1" is used for the JJmfeldlight and the Pr03eEtxon. gamg fri.qä! f ne t ^ cTitqTiflTTQ "rn" äevsn """.._'_ beam path means which can be switched on

• A - ...

Division into required for ambient lighting and image projection, make separate beam paths »

Further features of the hiring are the subclaims and the;

Can be found in the example. -.

The drawing represents a slide projector with the characteristics of the Firing.

The beams of the light source 1, for example the crater of an arc lamp, are directed approximately parallel by the double condenser 2. A partial cross section of this beam path is captured by the mirror 1 and deflected to project the slide 4. In order to adjust its cross-section to that for full illumination of the

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The diverging lens is used to bring the required dimension to image 4 5 switched in its beam path, expediently between the two deflection mirrors 3 and 6. The slide image 4 is projected in the usual way, e.g. through the additional condenser lens 7 and the projection optics 8 * In the undeflected The condenser lies in the beam path that supplies the ambient lighting 9 and the field mask 10 that have the same aspect ratio as the projection screen has on which the image field mask by the lens 11 is imaged so that it is fully illuminated will. The mirror 3 is dimensioned so that its image through the lens 11 is approximately the same size as that of the lens 8 supplied slide image. This creates a quiet surface for created this image.

The production; The light effects of the surrounding lighting are preferably provided by two exchangeable ornamental glass panes 12 and 13. One of these disks is powered by a small motor around their axis 14 in constant and in their speed optionally variable rotation offset the second, which consists of, Segments of different shapes can be composed, can be rotated by hand about the same axis 14, so that optionally different ornaments are brought into the beam path can. The interaction of these two discs creates various patterns, their shape and position on the screen constantly changes. These liuster are also made by the colors - rad 15 bathed in lively and constantly changing colors »This one Had can be composed of sectors of glass of different colors his and also by hand or motorized around his Axis 16 can be rotated.

The transition from one slide image to the next is done by Moving the mirror 3 out of the beam path · This gives the viewer the impression that the slide is from the The screen would be wiped away, while at the same time the entire screen would be filled with the play of colors that otherwise only served as a frame will * compartment replacement of the slide by hand or by one per se known image changing device, the mirror 3 is brought back into the beam path and thus the next image becomes visible

The lighting effects can not only work in the manner described can be produced by ornamental glasses and colored discs, but also by other optical means known per se, for example polarization optical type · Is used instead the disk 12 a fixed or moving polarizer, instead of the glass pane 13, one made of birefringent Material and instead of the color wheel 15 an equally fixed or moving polarizer, by rotating the Polarization directions of both polarizers against each other, and, if necessary, by moving the birefringent pane, you can also achieve different shape and color effects on the screen, which make for effective framing or blending which can be used for promotional slides

Claims (1)

Protection claims " ^j 1. Slide projector> in the beam path of a tfmfeldbeleuchiung ¹ Dia-picture "is displayed ,, characterized SaflrfUr * 7" and t ÜR this Her -projection ^ the Bia-image-ejag nailed-dn ^ aa ^»; source serves * . * 2- projector according to claim _r t * characterized La dear beam path ¹ of the light source geoefcsamen- Mitt "i eingeseiialtet - * - _r-'seine the division iii 14bel * ttchtung to Umf # ^ and proj image: required ection _r separate beam paths ^ provided ^ - ^% ' 3 * Projector according to claim t and Z _r thereby gel »aBzelcÜn * t _r dafi'aur * eia! Ceilquors cut des of the common. Source view aBJgnBtTnd els ^ -gber ' 5iä 4. Projector ^ according to claim 3 _r characterized ^ that for the purpose of cross-section widening of the deflected beam path ■ in it diverging, optical saddles are provided * Projector Yerwehdunlj 5- projector according to claim 1, 2 _f 3 or 4 »characterized by the of a projection '* "' assigned to each beam path .Lens- 5 * projector according to claim 1 _r 2 _r ~ 5 _r A or 5 _r characterized in that 5m beam path; the omfeldbeieuchtung * its ornamentation; Transparent panes that determine the color and color are fixed or arranged in a fixed manner " ⁷ ^ projector according to claim 6 _r characterized ^ by the arrangement the disks which preferably color the beam path directly in front of or behind the projection lens of the surrounding lighting. 8. Projector according to claim 6 or 7, characterized in that at least two one behind the other in the beam path of the surrounding lighting, Transparent disks are carriers of polarizing optical means, the mutual rotation of which changes the ornamental shapes and / or the color of the additional lighting