DE479319C - Device for the projection of shadow lines for marking purposes on display surfaces - Google Patents

Device for the projection of shadow lines for marking purposes on display surfaces

Info

Publication number
DE479319C
DE479319C DEST44796D DEST044796D DE479319C DE 479319 C DE479319 C DE 479319C DE ST44796 D DEST44796 D DE ST44796D DE ST044796 D DEST044796 D DE ST044796D DE 479319 C DE479319 C DE 479319C
Authority
DE
Germany
Prior art keywords
display surfaces
projection
shadow
shadow lines
marking purposes
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
DEST44796D
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.)
PLEIKART STUMPF DR
Original Assignee
PLEIKART STUMPF DR
Publication date
Priority to DEST44796D priority Critical patent/DE479319C/en
Application granted granted Critical
Publication of DE479319C publication Critical patent/DE479319C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Description

Vorrichtung zur Projektion von Schattenlinien für Markierungszwecke auf Schauflächen Bekannt ist die Methode der Markierung auf Schauflächen mittels von Lichtpunkten ausgehender Schatten, die einerseits die Bleleuchtung der ganzen diffus reflektierenden Schaufläche übernehmen, anderseits den scharfen Lichtschatten bewirken sollen. Beide Aufgaben voll zu erfüllen, ist schwierig. Ist der Lichtpunkt klein, so gibt es keine gute Unterlagenbeleuchtung; ist der Lichtpunkt groß, so fällt das Schattenbild schlecht aus.Device for the projection of shadow lines for marking purposes on display surfaces The method of marking on display surfaces by means of Shadows emanating from points of light, on the one hand the lighting of the whole take over the diffusely reflecting viewing surface, on the other hand the sharp light shadow should cause. Fulfilling both tasks in full is difficult. Is the point of light small, so there is no good underlay lighting; if the point of light is large, so if the silhouette is bad.

Diesen Nachteil behebt die gegenwärtige Erfindung, allerdings unter der Beschränkung auf Linienschatten. Sie kann z. B. für Zwecke der Reklame und zur Vornahme von Messungen an Röntgenaufnahmen dienen. Als Lichtquelle sieht sie einen limenartxgen Leuchtkörper a erheblicher Länge vor, als Schattenwerfer ebenfalls einen linienartigen Körper b, z. B. einen gespannten Draht. Sind beide parallel, so gibt es immer einen scharfen Schatten, wobei die Entfernung, Schattenobjekt, Auffangfläche, weitgehend verändert werden kann. Die Auffangfläche c selbst, die aus einem überfangglas besteht, ist trotzdem hell erleuchtet, da das Licht nicht nur von einem Punkt, sondern von einer erheblich langen Linie ausgeht. Leuchtkörper und Schattenobjekt können auch in fester Verbindung miteinander auf einem mit Rädernd oder Gleitflächen versehenen Gestell e angeordnet sein, so daß das Bild des Schattenwerfers verschoben werden kann, um verschiedene Stellen der Schaufläche mit der Schattenlinie zu versehen.The present invention overcomes this disadvantage, albeit below the restriction to line shadows. You can z. B. for advertising purposes and for Taking measurements on x-rays are used. She sees you as a source of light Limenartxgen luminous body of considerable length in front of it, also as a shadow thrower a line-like body b, e.g. B. a tensioned wire. Are both parallel so there is always a sharp shadow, whereby the distance, shadow object, Collection area, can be changed to a large extent. The collecting surface c itself, the consists of a flashed glass, is still brightly illuminated because the light is not starts from only one point, but from a considerably long line. Luminous body and shadow objects can also be firmly connected to each other on a wheeled or frames provided with sliding surfaces, so that the image of the shadow thrower Can be moved to different locations of the viewing area with the shadow line to provide.

Claims (1)

PATENTANSi'RÜCIiE: i. Vorrichtung zur Markierung von Schattenlinien auf Schauflächen, z. B. für Reklamezwecke, und zur Vornahme von Messungen an Röntgenaufnahmen, dadurch gekennzeichnet, daß linien- oder bandförmig gestaltete Lichtquellen (a) und schattengebende Fäden (b) oder Bänder parallel zueinander hinter der Schaufläche angeordnet sind. a. Vorrichtung nach Anspruch i, dadurch gekennzeichnet, daß Lichtquelle und Faden durch ein Gestell (e) miteinander verbunden sind, das parallel zur Schaufläche bewegt werden kann.PATENT REVIEW: i. Device for marking shadow lines on display surfaces, e.g. B. for advertising purposes, and for taking measurements on x-rays, characterized in that linear or band-shaped light sources (a) and shading threads (b) or bands parallel to each other behind the viewing surface are arranged. a. Device according to claim i, characterized in that the light source and threads are connected to one another by a frame (e) which is parallel to the viewing surface can be moved.
DEST44796D Device for the projection of shadow lines for marking purposes on display surfaces Expired DE479319C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEST44796D DE479319C (en) Device for the projection of shadow lines for marking purposes on display surfaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEST44796D DE479319C (en) Device for the projection of shadow lines for marking purposes on display surfaces

Publications (1)

Publication Number Publication Date
DE479319C true DE479319C (en) 1929-07-13

Family

ID=7464743

Family Applications (1)

Application Number Title Priority Date Filing Date
DEST44796D Expired DE479319C (en) Device for the projection of shadow lines for marking purposes on display surfaces

Country Status (1)

Country Link
DE (1) DE479319C (en)

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