DE757095C - Device for checking the electron-optical imaging in image catcher tubes with probe scanning - Google Patents

Device for checking the electron-optical imaging in image catcher tubes with probe scanning

Info

Publication number
DE757095C
DE757095C DEZ23442D DEZ0023442D DE757095C DE 757095 C DE757095 C DE 757095C DE Z23442 D DEZ23442 D DE Z23442D DE Z0023442 D DEZ0023442 D DE Z0023442D DE 757095 C DE757095 C DE 757095C
Authority
DE
Germany
Prior art keywords
electron
image
probe scanning
checking
optical imaging
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
DEZ23442D
Other languages
German (de)
Inventor
Hermann Dr Joachim
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.)
Zeiss Ikon AG
Original Assignee
Zeiss Ikon AG
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 Zeiss Ikon AG filed Critical Zeiss Ikon AG
Priority to DEZ23442D priority Critical patent/DE757095C/en
Application granted granted Critical
Publication of DE757095C publication Critical patent/DE757095C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/26—Image pick-up tubes having an input of visible light and electric output
    • H01J31/42—Image pick-up tubes having an input of visible light and electric output with image screen generating a composite electron beam which is deflected as a whole past a stationary probe to simulate a scanning effect, e.g. Farnsworth pick-up tube

Landscapes

  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)

Description

Die vorliegende Erfindung bezieht sich. auf die in der Fernsehtechnik bekannten Bil:dfängerröhren mit Sondenabtastung, bei denen das auf eine Photokathode-projizierte, Lichtbild in ein Elektronenbild umgewandelt, alsdann über die Öffnung einer Anode, hinter der sich ein Auffänger befindet, hin und her bewegt uil,d dadurch in Bildpunkte zerlegt wird.The present invention relates to. on those in television technology well-known image capture tubes with probe scanning, in which the projected onto a photocathode, Light image converted into an electron image, then through the opening of an anode, behind which there is a catcher, uil moved back and forth, d thereby in image points is dismantled.

Erfindungs-mä.ß soll nun bei de,rairti@gen Senderöhren die nach der Photokathode hinzeigg.nde Seite der Anode mit einer Fluoreszenzschicht überzogen sein. Die Anordnung einer Fluoreszenzschicht auf der Anode hat den Zweck, prüfen zu können, ob, die aus der Photokathode ausgelösten Elektronen in der Ebene der Anode zu einem scharfen Bild vereinigt werden. Durch. die, Umwandlung des Elektronenbildes in ein Lichtbild in der Ebene der Anode mit Hilfe des Fluoreszenzschirmes wird eine solche Kontrolle ermöglicht. Auf Grund einer solchen Kontrolle kann, die Elektronenoptik derart eingestellt werden, daß ein scharfes Bild und, damit eine einwandfreie Fernübertragung des Bildes erzielt wird. Die Fluoreszenzschvcht braucht die Anode nur teilweise zu bedecken; wie es das Ausfiih-rungsbei:spiel zeigt.In accordance with the invention, the rairti @ gen transmitter tubes are now intended for the Photocathode side of the anode coated with a fluorescent layer be. The purpose of testing the arrangement of a fluorescent layer on the anode to be able to see whether the electrons released from the photocathode in the plane of the Anode can be combined to form a sharp image. By. the, transformation of the electron image in a light image in the plane of the anode with the help of the fluorescent screen is a enables such control. On the basis of such a control, the electron optics be set in such a way that a sharp image and, thus, a faultless long-distance transmission of the image is achieved. The anode only partially needs the fluorescence signal to cover; as the example shows.

Die aus der Photokathode 1 des Bildfängers 2 infolge Bildwurfes ausgelösten Elektronen werden mit Hilfe elektronenoptischer Mittel in der Ebene der Anode 3 zu einem Bild vereinigt. Die Kontrolle der Bildschärfe erfolgt mit Hilfe, der auf der Anode angebrachten ringförmigen Fluoreszenzsc ,hich.t :1 .. Die bei der Zerlegung des Bildes durch die Öffnung der Anode 3 hindurchtretenden Elektronen werden von dem Auffänger 5 aufgefangen.The triggered from the photocathode 1 of the image catcher 2 as a result of the throwing of an image Electrons are deposited in the plane of the anode 3 with the help of electron-optical means united into one image. The image sharpness is checked with the help of the The ring-shaped fluorescent tube attached to the anode, hich.t: 1 .. The during the decomposition of the image passing through the opening of the anode 3 are electrons of the catcher 5 caught.

Claims (1)

PATENTANSPPL.CII: Einrichtung zur Kontrolle der elektronen-optischcn Abbildung bei Bildfängarröhren mit Sondenabtastung, dadurch gekennzeichnet, daß die Anode auf der der Photokathode zugewendeten Seite zumindest teilweise mit einer Fluoreszenzschicht überzogen ist. Zur Abgrenzung des Erfindungsgegenstands vom Stand der Technik sind im Erteilungsverfahren. folgende Druckschriften in Betracht gezogen worden: ENT 1935, Heft 12, Bd. 12, S. 381 ff, insbesondere S.381, rechte Spalte, letzten Absatz und S. 389 ff .; Annalen der Physik, Bd. 12, 1932, Nr. 5. S. 607 ff, insbesondere S. 612, Fig. 2.PATENTANSPPL.CII: Device for controlling the electron-optischcn imaging in image capture tubes with probe scanning, characterized in that the anode is at least partially coated on the side facing the photocathode with a fluorescent layer. To distinguish the subject matter of the invention from the state of the art, the granting procedure. the following publications have been considered: ENT 1935, issue 12, vol. 12, p. 381 ff, in particular p. 381, right column, last paragraph and p. 389 ff.; Annalen der Physik, Vol. 12, 1932, No. 5, pp. 607 ff, especially p. 612, Fig. 2.
DEZ23442D 1936-10-03 1936-10-03 Device for checking the electron-optical imaging in image catcher tubes with probe scanning Expired DE757095C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEZ23442D DE757095C (en) 1936-10-03 1936-10-03 Device for checking the electron-optical imaging in image catcher tubes with probe scanning

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEZ23442D DE757095C (en) 1936-10-03 1936-10-03 Device for checking the electron-optical imaging in image catcher tubes with probe scanning

Publications (1)

Publication Number Publication Date
DE757095C true DE757095C (en) 1952-11-04

Family

ID=7625900

Family Applications (1)

Application Number Title Priority Date Filing Date
DEZ23442D Expired DE757095C (en) 1936-10-03 1936-10-03 Device for checking the electron-optical imaging in image catcher tubes with probe scanning

Country Status (1)

Country Link
DE (1) DE757095C (en)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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