AT43968B - Projection screen. - Google Patents

Projection screen.

Info

Publication number
AT43968B
AT43968B AT43968DA AT43968B AT 43968 B AT43968 B AT 43968B AT 43968D A AT43968D A AT 43968DA AT 43968 B AT43968 B AT 43968B
Authority
AT
Austria
Prior art keywords
projection screen
screen
desc
projection
warning
Prior art date
Application number
Other languages
German (de)
Inventor
Mario Ganzini
Original Assignee
Mario Ganzini
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 Mario Ganzini filed Critical Mario Ganzini
Application granted granted Critical
Publication of AT43968B publication Critical patent/AT43968B/en

Links

Landscapes

  • Overhead Projectors And Projection Screens (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



    Projektion8schirm.   
 EMI1.1 
 erleuchteten Raum aufgestellt die Eigenschaften haben soll, des Bild mit genügender Deutlichkeit erscheinen zu lassen. 



   Dies geschieht wie folgt : Auf einer weissen   Obernäche wird ein Netzwerk angeordnet,   dessen Wände senkrecht zu dieser Oberfläche stehen und weiches so beschaffen ist, dass 
 EMI1.2 
 vorhandene Licht wird also schräg gegen die Wände der Zellen fallen müssen. Wenn nun auf diesen Schirm ein projektionsbild senkrecht zur Schirmebene geworfen wird, so verschwindet der   Schatten   in den   Zeiten   und der Schirm erscheint an   den beleuchteten Statten   
 EMI1.3 
 vollen   Gegensätzen   von Licht und Schatten erscheinen. 



   Auf der Zeichnung ist die Erfindung in mehreren   Ausführnngsformen   dargestellt. 



   Fig. 1 zeigt den Schirm mit dem Netzwerk und quadratisch geformten Zellen in Aufsicht, 
 EMI1.4 
 l'rojelitionsapparat. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



    Projection screen.
 EMI1.1
 an illuminated room should have the properties to make the picture appear with sufficient clarity.



   This is done as follows: A network is arranged on a white surface, the walls of which are perpendicular to this surface and which are soft in such a way that
 EMI1.2
 Any existing light will therefore have to fall at an angle against the walls of the cells. If a projection image is thrown on this screen perpendicular to the plane of the screen, the shadow disappears in the times and the screen appears in the illuminated places
 EMI1.3
 full contrasts of light and shadow appear.



   In the drawing, the invention is shown in several embodiments.



   Fig. 1 shows the screen with the network and square-shaped cells in plan,
 EMI1.4
 l'rojelition apparatus.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

Claims (1)

PATENT-ANSPRUCH : Projektionsschirm, dadurch gekennzeichnet, dass dicht über einer weissen undurchsichtigenFlächeeinausZellenmitsenkrechtzurProjektionsebeneangeordnetenWänden bestehendes Netzwerk vorgesehen ist. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Projection screen, characterized in that a network consisting of cells arranged perpendicular to the projection plane is provided just above a white opaque surface. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT43968D 1909-02-15 1909-02-15 Projection screen. AT43968B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT43968T 1909-02-15

Publications (1)

Publication Number Publication Date
AT43968B true AT43968B (en) 1910-09-10

Family

ID=3563446

Family Applications (1)

Application Number Title Priority Date Filing Date
AT43968D AT43968B (en) 1909-02-15 1909-02-15 Projection screen.

Country Status (1)

Country Link
AT (1) AT43968B (en)

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