DE752592C - Luminescent screen - Google Patents
Luminescent screenInfo
- Publication number
- DE752592C DE752592C DEL109281D DEL0109281D DE752592C DE 752592 C DE752592 C DE 752592C DE L109281 D DEL109281 D DE L109281D DE L0109281 D DEL0109281 D DE L0109281D DE 752592 C DE752592 C DE 752592C
- Authority
- DE
- Germany
- Prior art keywords
- screen
- luminescent screen
- glass plate
- tube
- light
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
- H01J29/18—Luminescent screens
- H01J29/24—Supports for luminescent material
Landscapes
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
Description
In den meisten Fällen wird der Leuchtschirm einer Kathodenstrahlröhre von der Rückseite aus betrachtet, so daß die von den Kathodenstrahlen erzeugte Lumineszenz durch die Leuchtschicht hindurchtreten muß und von ihr merklich absorbiert wird. Letzteren Nachteil kann man dadurch vermeiden, daß man in an sich bekannter Weise das Licht von der Vorderseite des Leuchtschirms benutzt, z. B. zur Betrachtung oder zur photographischen Aufzeichnung.In most cases, the fluorescent screen will be a cathode ray tube viewed from the rear, so that the luminescence generated by the cathode rays must pass through the luminous layer and is noticeably absorbed by it. The latter disadvantage can be avoided by doing in a manner known per se uses the light from the front of the fluorescent screen, e.g. B. for viewing or for photographic recording.
In diesem Falle ist es möglich, die Lichtausbeute nahezu zu verdoppeln, indem man erfindungsgemäß die Leuchtschicht auf einer spiegelnden Unterlage anbringt, zweckmäßig auf einer vorderseitig verspiegelten Glasplatte.In this case it is possible to almost double the light output, by applying the luminescent layer according to the invention to a reflective base, expediently on a glass plate mirrored on the front.
Bild i zeigt eine solche Röhre i i mit dem Leuchtschirm 12. Die Kathodenstrahlen kommen aus der Richtung des Pfeiles 13, während das Licht vom Leuchtschirm in der Richtung des Pfeiles 1.4 strahlt.Picture i shows such a tube i i with the luminescent screen 12. The cathode rays come from the direction of arrow 13, while the light from the fluorescent screen is in the Direction of arrow 1.4 radiates.
Bild 2 stellt den Querschnitt durch ein kleines Stück des Leuchtschirms dar. 21 ist die Glasplatte, 22 die Spiegelschicht (z. B. aufgedampftes Silber) und 23 die Leuchtschicht.Figure 2 represents the cross section through a small piece of the fluorescent screen 21 is the glass plate, 22 is the mirror layer (e.g. vapor-deposited silver) and 23 the luminescent layer.
Während nach Bild i der Kathodenstrahl axial in die Röhre eintritt und das Licht seitwärts austritt, zeigt Bild 3 die umgekehrte Anordnung. Beispielsweise ist eine Röhre i i dargestellt, die durch eine planparallele Glasplatte 21 abgeschlossen ist, auf welcher sich eine Metallschicht 22 und die Leuchtschicht 23 befinden. Der Kathodenstrahl 13 wird bei io erzeugt und trifft schräg auf den Bildschirm, während das Licht desselben durch die in die Röhre eingeschmolzene Linse 24 betrachtet oder auf einen Schirm entworfen wird.While according to Fig. I the cathode ray enters the tube axially and the light emerges sideways, Figure 3 shows the reverse arrangement. For example a tube i i is shown, which is closed off by a plane-parallel glass plate 21 is on which a metal layer 22 and the luminous layer 23 are located. Of the Cathode ray 13 is generated at io and strikes the screen obliquely while viewing its light through the lens 24 fused into the tube, or is designed on a screen.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL109281D DE752592C (en) | 1934-11-07 | 1934-11-07 | Luminescent screen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL109281D DE752592C (en) | 1934-11-07 | 1934-11-07 | Luminescent screen |
Publications (1)
Publication Number | Publication Date |
---|---|
DE752592C true DE752592C (en) | 1954-11-22 |
Family
ID=7290454
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEL109281D Expired DE752592C (en) | 1934-11-07 | 1934-11-07 | Luminescent screen |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE752592C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1172779B (en) * | 1959-07-30 | 1964-06-25 | Telefunken Patent | Process for two-fold, independent evaluation of a fluorescent screen image from cathode ray tubes and a device for carrying out the process |
DE3924213A1 (en) * | 1989-01-17 | 1990-07-19 | Pioneer Electronic Corp | LUMINESCENCE SCREEN |
-
1934
- 1934-11-07 DE DEL109281D patent/DE752592C/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1172779B (en) * | 1959-07-30 | 1964-06-25 | Telefunken Patent | Process for two-fold, independent evaluation of a fluorescent screen image from cathode ray tubes and a device for carrying out the process |
DE3924213A1 (en) * | 1989-01-17 | 1990-07-19 | Pioneer Electronic Corp | LUMINESCENCE SCREEN |
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