DE878668C - Saving image transmitter tubes with image converter part - Google Patents
Saving image transmitter tubes with image converter partInfo
- Publication number
- DE878668C DE878668C DET1184D DET0001184D DE878668C DE 878668 C DE878668 C DE 878668C DE T1184 D DET1184 D DE T1184D DE T0001184 D DET0001184 D DE T0001184D DE 878668 C DE878668 C DE 878668C
- Authority
- DE
- Germany
- Prior art keywords
- image
- converter part
- saving
- transmitter tubes
- electrode
- 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
- H01J29/36—Photoelectric screens; Charge-storage screens
- H01J29/39—Charge-storage screens
- H01J29/43—Charge-storage screens using photo-emissive mosaic, e.g. for orthicon, for iconoscope
-
- 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
Landscapes
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Description
Es ist bereits ein Fernsehbildzerleger vorgeschlagen worden, bei welchem das zu übertragende Bild auf eine Photokathode projiziert und durch eine Elektronenlinse vergrößert auf eine mosaikartig ausgebildete Auffangelektrode abgebildet wird. Die Elemente dieser Elektrode empfangen dadurch den Bildhelligkeiten entsprechende Ladungen, die durch die Abtastung mit einem unabhängigen Kathodenstrahl von der Rückseite oder auch von der Vorderseite der Mosaikelektrode ausgewertet werden.A television image decomposer has already been proposed in which the image to be transferred is projected onto a photocathode and through an electron lens is imaged enlarged on a mosaic-like collecting electrode. the As a result, elements of this electrode receive charges corresponding to the brightness of the image, those by scanning with an independent cathode ray from the rear or can be evaluated from the front of the mosaic electrode.
Eine schematische Darstellung dieser letzteren Anordnung zeigt die Abbildung.A schematic representation of this latter arrangement is shown in FIG Illustration.
Das auf die Photoschicht i mittels eines optischen Systems 2 projizierte Lichtbild erzeugt ein entsprechendes Photoelektronenbild. Die von der Photokathode ausgehenden Elektronen werden mittels des elektronenoptischen Systems 3 auf eine Rasterfläche q. geworfen. Die Abtastung der Rasterfläche geschieht von derselben Seite vermittels eines Kathodenstrahls, der in dem ,System 7 erzeugt und gebündelt sowie in dem System 8 in der üblichen Weise abgelenkt wird. Zum Auffangen der Sekundärelektronen dient eine Netzelektrode g.That projected onto the photo layer i by means of an optical system 2 Light image creates a corresponding photoelectron image. The one from the photocathode outgoing electrons are by means of the electron optical system 3 on a Grid area q. thrown. The scanning of the grid area is done by the same Page by means of a cathode ray, which is generated and bundled in the system 7 as well as being deflected in the system 8 in the usual manner. To collect the secondary electrons a mesh electrode g is used.
Ein an sich bekanntes Verfahren für die Konstruktion der Rasterfläche besteht darin, daß eine zusammenhängende, auf einer isolierenden Unterlage befindliche Metallschicht erhitzt wird, wodurch die Metallschicht unter geeigneten Bedingungen in sehr kleine Elemente zerrissen wird. Dieses Verfahren ist jedoch wegen der genauestens einzuhaltenden Dauer und Höhe der Erhitzung umständlich und liefert nicht immer gleichbleibende Produkte.A method known per se for the construction of the grid area is that a coherent, located on an insulating pad Metal layer is heated, creating the metal layer under suitable conditions being torn into very small elements. However, this procedure is accurate because of the The duration and level of heating to be complied with is cumbersome and does not always deliver consistent products.
Gemäß der Erfindung erfolgt bei einer speichernden Bildsenderöhre mit Bildwandlerteil die Abbildung der zusammenhängenden Photokathode auf der Bildfläche ebenfalls vergrößert, wobei diese Bildfläche ebenfalls eine einseitige Mosaikelektrode darstellt, die aus einer Signalelektrode, einer Isolierschicht und den auf diese in Pulver- oder Staubform aufgebrachten Speicherelementenbesteht.According to the invention takes place in a storing picture transmitter tube With the image converter part, the image of the connected photocathode on the image surface also enlarged, this image area also having a one-sided mosaic electrode represents, which consists of a signal electrode, an insulating layer and the on these memory elements applied in powder or dust form.
Für die Herstellung der Elektroden überzieht man beispielsweise eine zusammenhängende Unterlage, z. B. eine Silberschicht, mit einem isolierenden Bindemittel. Darauf wird ein feines Metallpulver in einer derart bemessenen Menge aufgestäubt, daß nach Eintrocknen des Bindemittels genügend große Isolationszwischenräume zurückbleiben. Das Metallpulver kann gegebenenfalls auch in die Isolierschicht eingesintert werden.For the manufacture of the electrodes, for example, one is coated coherent document, e.g. B. a silver layer, with an insulating binder. A fine metal powder is dusted on it in such an amount that that after the binding agent has dried, sufficiently large insulating spaces remain. The metal powder can optionally also be sintered into the insulating layer.
Besonders vorteilhaft ist bei der Erfindung, daß die halblichtdurchlässige Photokathode als elektronenoptische Gegenstandsfläche und der erfindungsgemäße Mosaikschirm als elektronenoptische Bildfläche eine gemeinsame Mittelsenkrechte haben. Dann kann man nämlich die lichtoptische sowie die elektronenoptische Achse zu beiden Seiten dieser Kathode zusammenfallen lassen. Es entstehen dann keine Verzerrungen, wie sie sonst beim Schrägstellen der elektronenoptischen Achse auftreten, die durch besondere Mittel kompensiert werden müßten. -It is particularly advantageous in the invention that the semitransparent Photocathode as an electron-optical object surface and the mosaic screen according to the invention have a common center perpendicular as an electron-optical image surface. Then can namely the light-optical and the electron-optical axis on both sides let this cathode collapse. There are then no distortions, like they otherwise occur when the electron-optical axis is inclined, which is caused by special funds would have to be compensated. -
Claims (1)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DET1184D DE878668C (en) | 1934-11-30 | 1934-12-01 | Saving image transmitter tubes with image converter part |
US59888A US2116901A (en) | 1934-11-30 | 1936-01-20 | Mosaic electrode for television tubes |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3441034A GB445372A (en) | 1934-11-30 | 1934-11-30 | Cathode ray tubes for television apparatus |
DET1184D DE878668C (en) | 1934-11-30 | 1934-12-01 | Saving image transmitter tubes with image converter part |
Publications (1)
Publication Number | Publication Date |
---|---|
DE878668C true DE878668C (en) | 1953-06-05 |
Family
ID=25999104
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DET1184D Expired DE878668C (en) | 1934-11-30 | 1934-12-01 | Saving image transmitter tubes with image converter part |
Country Status (2)
Country | Link |
---|---|
US (1) | US2116901A (en) |
DE (1) | DE878668C (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2563488A (en) * | 1951-08-07 | Barrier grid storage tube | ||
US2423124A (en) * | 1943-01-30 | 1947-07-01 | Bell Telephone Labor Inc | Electro-optical device |
US2449752A (en) * | 1946-01-07 | 1948-09-21 | Thomas N Ross | Cathode-ray tube |
US2549546A (en) * | 1947-10-24 | 1951-04-17 | Albert G Thomas | Photographic electrical copying device |
US2596617A (en) * | 1948-12-29 | 1952-05-13 | Bell Telephone Labor Inc | Increasing number of holes in apertured metal screens |
US2681886A (en) * | 1948-12-29 | 1954-06-22 | Bell Telephone Labor Inc | Preparation of two-sided mosaic screen |
US2833954A (en) * | 1954-07-27 | 1958-05-06 | Du Mont Allen B Lab Inc | Light source and method of use |
-
1934
- 1934-12-01 DE DET1184D patent/DE878668C/en not_active Expired
-
1936
- 1936-01-20 US US59888A patent/US2116901A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US2116901A (en) | 1938-05-10 |
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