DE625744C - Device for the projection of advertising images in point form by means of a screen fitted with convex lenses - Google Patents
Device for the projection of advertising images in point form by means of a screen fitted with convex lensesInfo
- Publication number
- DE625744C DE625744C DEC48670D DEC0048670D DE625744C DE 625744 C DE625744 C DE 625744C DE C48670 D DEC48670 D DE C48670D DE C0048670 D DEC0048670 D DE C0048670D DE 625744 C DE625744 C DE 625744C
- Authority
- DE
- Germany
- Prior art keywords
- screen
- projection
- point form
- convex lenses
- advertising images
- 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
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F19/00—Advertising or display means not otherwise provided for
- G09F19/12—Advertising or display means not otherwise provided for using special optical effects
- G09F19/18—Advertising or display means not otherwise provided for using special optical effects involving the use of optical projection means, e.g. projection of images on clouds
Description
Einrichtung zur Projektion von Reklamebildern in Punktform mittels eines mit Konvexlinsen besetzten Schirmes Die Lichtbildprojektion -wurde bisher nur in beschränktem Maße zu Reklamezwecken verwendet; da es sehr schwierig ist; die Bilder auf eine große Entfernung sichtbar zumachen. Der Zweck der vorliegenden Erfindung ist, die Leuchtkraft der Bilder zu erhöhen, indem die Bilder in kleine regelmäßig verteilte Punkte zerlegt werden und das verfügbare Licht in Punktform konzentriert wird. Auf diese Weise wird erreicht, daß das konzentrierte Licht jedes Punktes auch auf größe Entfernungen oder bei unklaren Raum- oder Luftverhältnissen deutlich sichtbar wird.Device for the projection of advertising images in point form by means of a screen fitted with convex lenses used for promotional purposes only to a limited extent; since it is very difficult; make the images visible from a great distance. The purpose of the present Invention is to increase the luminosity of the pictures by dividing the pictures into small ones regularly distributed points are broken down and the available light in point form is concentrated. In this way it is achieved that the concentrated light each Point even at great distances or in unclear room or air conditions becomes clearly visible.
Gemäß der Erfindujig wird ein Milchglasschirm o. dgl. vorgesehen, auf dem die aus Punkten bestehenden Bilder erscheinen, die infolge der veränderlichen Leuchtstärke der Einzelpunkte den Eindruck photographischer von aus mehr oder weniger eng aneinandergereihten verschieden lichtstarken Punkten bestehender Bilder erwecken.According to the invention, a milk glass screen or the like is provided, on which appear the images made up of dots that result from the changeable The luminosity of the individual points gives the impression of being more or less photographic Awaken closely lined up different bright points of existing images.
Hinter diesem Milchglasschirm befindet sich zu diesem Zweck eine Reihe von kleinen vorzugsweise zusammen auf einer Scheibe angeordneten Linsen, von rundem oder rechteckigem Umfang,, in deren Brennweite sich der Milchglasschirm befindet.There is a row behind this frosted glass shade for this purpose of small lenses, preferably arranged together on a disk, of round lenses or rectangular circumference, in whose focal length the frosted glass screen is located.
Der Projektionsapparat für starre oder bewegliche Bilder ist in entsprechender Entfernung .dahinter aufgestellt. Die Zeichnung zeigt schematisch ein praktisches Ausführungsbeispiel des Erfindungsgegenstandes, und zwar Fig. i die Anordnung des Bildwerfers, des Linsen- und des Milchglasschirmes, Fig, 2 .ein zu projizierendes Negativ, Fig.3 das in Punktform projizierte Bild und Fig. 4 einen Teil des Linsenschirmes.The projection apparatus for fixed or moving images is appropriate Distance. Placed behind. The drawing shows schematically a practical one Embodiment of the subject matter of the invention, namely Fig. I the arrangement of the Projector, the lens and the frosted glass screen, Fig, 2 .a to be projected Negative, FIG. 3 shows the image projected in point form and FIG. 4 shows a part of the lens screen.
Der Projektionsapparat a bildet auf dem Linsenschirm b das Negativ c ab. Die @einzelnen .auf die Linsen e fallenden Lichtbündel werden auf den iVIilchglasschirm d konzentriert, auf dem sie in Punktform leuchtend erscheinen.The projection apparatus a forms the negative on the lens screen b c from. The individual bundles of light falling on the lenses are reflected on the milk glass screen d concentrated, on which they appear luminous in point form.
Das- vom Linsenschirm und dem Milchglas gebildete Ganze kann vorzugsweise m einem Gehäuse eingeschlossen sein, um Lichtverstreuungen zu vermeiden.The whole formed by the lens screen and the frosted glass can preferably Enclosed in a housing to avoid light scattering.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEC48670D DE625744C (en) | Device for the projection of advertising images in point form by means of a screen fitted with convex lenses |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEC48670D DE625744C (en) | Device for the projection of advertising images in point form by means of a screen fitted with convex lenses |
Publications (1)
Publication Number | Publication Date |
---|---|
DE625744C true DE625744C (en) | 1936-02-14 |
Family
ID=7026806
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEC48670D Expired DE625744C (en) | Device for the projection of advertising images in point form by means of a screen fitted with convex lenses |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE625744C (en) |
-
0
- DE DEC48670D patent/DE625744C/en not_active Expired
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