GB477216A - Improvements relating to television systems - Google Patents

Improvements relating to television systems

Info

Publication number
GB477216A
GB477216A GB17552/36A GB1755236A GB477216A GB 477216 A GB477216 A GB 477216A GB 17552/36 A GB17552/36 A GB 17552/36A GB 1755236 A GB1755236 A GB 1755236A GB 477216 A GB477216 A GB 477216A
Authority
GB
United Kingdom
Prior art keywords
cathode
phosphorescent screen
photo
scanning
light energy
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
GB17552/36A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB477216A publication Critical patent/GB477216A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B59/00—Devices specially adapted for connection between animals or tractors and agricultural machines or implements
    • A01B59/04—Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines pulled or pushed by a tractor
    • A01B59/042—Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines pulled or pushed by a tractor having pulling means arranged on the rear part of the tractor
    • 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
    • H01J29/38—Photoelectric screens; Charge-storage screens not using charge storage, e.g. photo-emissive screen, extended cathode
    • H01J29/385—Photocathodes comprising a layer which modified the wave length of impinging radiation

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Zoology (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

477,216. Cathode-ray tubes. BRITISH THOMSON-HOUSTON CO., Ltd. June 24, 1936, No. 17552. Convention date, July 25, 1935. [Class 39 (i)] In a television transmitter, the electron image formed by a photo-electric cathode is intensified by storing up the light energy of each element of the image during the interval between successive scannings, by the use of a phosphorescent screen of a Lenard phosphor, the stored light energy being released at the scanning of the element to activate the corresponding element of the photo-electric cathode. The image is projected on a phosphorescent screen preferably of zinc sulphide with manganese, and is reproduced on the photoelectric cathode, the phosphorescent screen being scanned by an infra-red ray in synchronism with the scanning proper.
GB17552/36A 1935-07-25 1936-06-24 Improvements relating to television systems Expired GB477216A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE477216X 1935-07-25

Publications (1)

Publication Number Publication Date
GB477216A true GB477216A (en) 1937-12-24

Family

ID=6542098

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17552/36A Expired GB477216A (en) 1935-07-25 1936-06-24 Improvements relating to television systems

Country Status (2)

Country Link
FR (1) FR477216A (en)
GB (1) GB477216A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2907140A (en) * 1955-04-15 1959-10-06 Alvin G Reynoldson Method of increasing the moisture content of soils and preventing wind erosion

Also Published As

Publication number Publication date
FR477216A (en) 1915-10-06

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