GB460579A - Improvements in or relating to light sensitive electron discharge devices - Google Patents

Improvements in or relating to light sensitive electron discharge devices

Info

Publication number
GB460579A
GB460579A GB2148435A GB2148435A GB460579A GB 460579 A GB460579 A GB 460579A GB 2148435 A GB2148435 A GB 2148435A GB 2148435 A GB2148435 A GB 2148435A GB 460579 A GB460579 A GB 460579A
Authority
GB
United Kingdom
Prior art keywords
fluorescent
screen
electrodes
anode
photo
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
GB2148435A
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.)
THOMAS MARMADUKE CONSTABLE LAN
Baird Television Ltd
Original Assignee
THOMAS MARMADUKE CONSTABLE LAN
Baird Television Ltd
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 THOMAS MARMADUKE CONSTABLE LAN, Baird Television Ltd filed Critical THOMAS MARMADUKE CONSTABLE LAN
Priority to GB2148435A priority Critical patent/GB460579A/en
Publication of GB460579A publication Critical patent/GB460579A/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
    • H01J31/50—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2231/00—Cathode ray tubes or electron beam tubes
    • H01J2231/50—Imaging and conversion tubes
    • H01J2231/505—Imaging and conversion tubes with non-scanning optics
    • H01J2231/5056—Imaging and conversion tubes with non-scanning optics magnetic

Landscapes

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

Abstract

460,579. Discharge apparatus. SZEGHO, C., LANCE, T. M. C., and BAIRD TELEVISION, Ltd. July 29, 1935, No. 21484. [Class 39 (i)] Electrons released from a photo-electric surface by an optical image thrown thereon are accelerated and focused upon a fluorescent screen so as to produce an image on the screen. The fluorescent material may be deposited on the anode and the focusing field may be electrostatic or electromagnetic, for example a solenoid surrounding the tube. Or the anode may be ring-shaped and the fluorescent material deposited on the end-wall of the tube. In another form, the photoelectric screen 1 consists of or contains a secondary electron emitting material and the fluorescent screen 6 is similarly constructed or consists of an interlaced mosaic of fluorescent and secondary emitting substances. A ring-shaped anode 8 and focusing coil 7 are provided and an alternating potential is maintained on the electrodes 1 and 6 by a source 9. In another modification, successive secondary emitting electrodes of wire-mesh or reflecting construction, with a single or successive magnetic focusing coils, may be arranged in the path between electrodes 1 and 6. A succession of tubes may be arranged in cascade. The photo-electric material may be active at wavelengths different from those emitted by the fluorescent screen. Specification 444,998 is referred to.
GB2148435A 1935-07-29 1935-07-29 Improvements in or relating to light sensitive electron discharge devices Expired GB460579A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2148435A GB460579A (en) 1935-07-29 1935-07-29 Improvements in or relating to light sensitive electron discharge devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2148435A GB460579A (en) 1935-07-29 1935-07-29 Improvements in or relating to light sensitive electron discharge devices

Publications (1)

Publication Number Publication Date
GB460579A true GB460579A (en) 1937-01-29

Family

ID=10163710

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2148435A Expired GB460579A (en) 1935-07-29 1935-07-29 Improvements in or relating to light sensitive electron discharge devices

Country Status (1)

Country Link
GB (1) GB460579A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1095416B (en) * 1956-05-12 1960-12-22 Nat Res Dev Photoelectron optical device
GB2273812A (en) * 1992-12-24 1994-06-29 Motorola Inc Image enhancement device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1095416B (en) * 1956-05-12 1960-12-22 Nat Res Dev Photoelectron optical device
GB2273812A (en) * 1992-12-24 1994-06-29 Motorola Inc Image enhancement device
GB2273812B (en) * 1992-12-24 1997-01-08 Motorola Inc Image enhancement device

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