DE725976C - Saving image catcher tubes with image converter part - Google Patents

Saving image catcher tubes with image converter part

Info

Publication number
DE725976C
DE725976C DET52931D DET0052931D DE725976C DE 725976 C DE725976 C DE 725976C DE T52931 D DET52931 D DE T52931D DE T0052931 D DET0052931 D DE T0052931D DE 725976 C DE725976 C DE 725976C
Authority
DE
Germany
Prior art keywords
image
photocathode
converter part
saving
scanning
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
DET52931D
Other languages
German (de)
Inventor
Dr Fritz Schroeter
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.)
Telefunken AG
Original Assignee
Telefunken 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 Telefunken AG filed Critical Telefunken AG
Priority to DET52931D priority Critical patent/DE725976C/en
Application granted granted Critical
Publication of DE725976C publication Critical patent/DE725976C/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
    • H01J31/265—Image pick-up tubes having an input of visible light and electric output with light spot scanning
    • 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
    • H01J31/28—Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen

Landscapes

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

Description

Speichernde Bildfängerröhre mit Bildwandlerteil Gegenstand der Erfindung ist eine speichernde Bildfängerröhre großer Einfachheit, die auf dem Prinzip des bekannten Elektronenbildwandlers beruht und bei der das in der Gesamtheit seiner Helligkeit auf eine Photokathode geworfene Bild auf einer räumlich getrennten Speicherelektrode ein en.tsprechendes elektrisches Ladungsbild erzeugt.Saving image capture tube with image converter part is the subject of the invention is a storing image capture tube of great simplicity based on the principle of known electron image converter is based and in the entirety of his Brightness of the image projected onto a photocathode on a spatially separated storage electrode a corresponding electrical charge image is generated.

Die Erfindung besteht darin, daß zur Abtastung dieses Ladungsbildes ein über die gleiche Photokathode wandernder punktförmig konzentrierter Lichtstrahl konstanter Energie verwendet wird und die gleiche Elektronenoptik sowohl zur Ladungsbilderzeugung als auch zur Abtastung dient. Dadurch ist die Anordnung eines besonderen Erzeugers für die das Ladungsbild abtastenden Photoelektronen überflüssig geworden, die Bildfängerröhre bezüglich ihres technischen Aufwandes, insbesondere auch durch das Fortfallen von Abschirmungen zwischen Bildwandler- und Strahlerzeugersystem, erheblich vereinfacht. Die Aufnahmekamera kann mit einer solchen Röhre sehr klein und beweglich ausgeführt werden.The invention consists in that for scanning this charge image a point-like concentrated light beam traveling over the same photocathode constant energy is used and the same electron optics are used both for charge imaging as well as for scanning. This makes the arrangement of a special producer The image capture tube has become superfluous for the photoelectrons that scan the charge image with regard to their technical complexity, especially due to the omission of Shielding between the image converter and beam generator system, considerably simplified. The recording camera can be made very small and movable with such a tube will.

In der Zeichnung ist eine Ausführungsform der Erfindung schematisch dargestellt. Es bedeuten i das zu übertragende Bildfeld, a ein Objektiv zum Entwerfen desselben auf die transparente Photokathode 3 der erfindungsgemäßen Röhre, deren Sauganode mit q. bezeichnet ist. 5 stellt die magnetische. Linse zur Abbildung der Kathodenemission auf den Speicherschirm 6 dar, 7 ist dessen kapazitive Gegenbelegung, die in bekannter Weise zur Abnahme des elektrischen Fernsehsignals dient. Zur Erzeugung des das Ladungsbild abtastenden Photoelektronenstrahles kann ein Lichtpunktverteiler, beispielsweise eine rotierende Nipkowscheibe oder ein äquivalentes Organ, dienen. In der Zeichnung ist eine Braunsche Röhre 8 dargestellt. Das auf ihrem Leuchtschirm von dem bewegten Kathodenstrahl geschriebene Raster wird über den unter 4.5' zur optischen Achse des Bildfängerrohres geneigten halbdurchlässigen Spiegel 9 scharf auf die Photokathode 3 abg°-bildet. Der die Photokathode üb°rstreichende bildpunktförmig konzentrierte Lichtfleck löst einen entsprechenden Photoele"tronenstrahl aus, der mit Hilfe der zum Entwerfen des Elektronenbildes auf 6 notwendigen Mittel .4 und 5 in der Ebene der Mosaikelektrode abgebildet wird.An embodiment of the invention is shown schematically in the drawing shown. I denotes the image field to be transmitted, a a lens for designing same on the transparent photocathode 3 of the tube according to the invention, whose Suction anode with q. is designated. 5 represents the magnetic. Lens for imaging the Cathode emission on the storage screen 6, 7 is its capacitive counter-assignment, which is used in a known manner to pick up the electrical television signal. To the generation of the photoelectron beam scanning the charge image can be a light point distributor, for example a rotating Nipkow disk or an equivalent organ. A Braun tube 8 is shown in the drawing. That on her luminescent screen The raster written by the moving cathode ray is displayed on the under 4.5 'for optical axis of the image catcher tube inclined semitransparent mirror 9 sharp on the photocathode 3 ab ° -bildet. The one that sweeps over the photocathode in the form of a pixel concentrated light spot triggers a corresponding photoelectric beam, which with the help of the means necessary to design the electron image on 6 .4 and 5 is shown in the plane of the mosaic electrode.

Claims (1)

PATENTANSPRÜCHE: i. Speichernde Bildfängerröhremit Bildwandlerteil, bei der das in der Gesamtheit seiner Helligkeitswerte auf eine Photokathode geworfene Bild auf einer räumlich getrennten Speicherelektrode ein entsprechendes elektrisches Ladungsbild erzeugt, dadurch gekennzeichnet, daß zur Abtastung dieses Ladungsbildes ein über die gleiche Photokathode wandernder punktförmig konzentrierter Lichtstrahl konstanter Energie verwendet wird und die gleiche Elektronenoptik sowohl zur Ladungsbilderzeugung als auch zur Abtastung dient. z. Bildfängerröhre nach Anspruch i, dadurch gekennzeichnet, daß zur Erzeugung des über die Photokathode bewegten Lichtpunktes eine-Braunsche Röhre dient.PATENT CLAIMS: i. Saving image capture tube with image converter part, in which the totality of its brightness values is thrown onto a photocathode A corresponding electrical image is shown on a spatially separated storage electrode Generated charge image, characterized in that for scanning this charge image a point-like concentrated light beam traveling over the same photocathode constant energy is used and the same electron optics are used both for charge imaging as well as for scanning. z. Image capture tube according to claim i, characterized in that that to generate the point of light moved over the photocathode a-Braun's Tube is used.
DET52931D 1939-10-13 1939-10-14 Saving image catcher tubes with image converter part Expired DE725976C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DET52931D DE725976C (en) 1939-10-13 1939-10-14 Saving image catcher tubes with image converter part

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE870808X 1939-10-13
DET52931D DE725976C (en) 1939-10-13 1939-10-14 Saving image catcher tubes with image converter part

Publications (1)

Publication Number Publication Date
DE725976C true DE725976C (en) 1942-10-03

Family

ID=25951847

Family Applications (1)

Application Number Title Priority Date Filing Date
DET52931D Expired DE725976C (en) 1939-10-13 1939-10-14 Saving image catcher tubes with image converter part

Country Status (1)

Country Link
DE (1) DE725976C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE958743C (en) * 1953-05-13 1957-02-21 Philips Nv Picture taking tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE958743C (en) * 1953-05-13 1957-02-21 Philips Nv Picture taking tube

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