GB529411A - Improvements in or relating to television transmitting systems - Google Patents

Improvements in or relating to television transmitting systems

Info

Publication number
GB529411A
GB529411A GB15965/39A GB1596539A GB529411A GB 529411 A GB529411 A GB 529411A GB 15965/39 A GB15965/39 A GB 15965/39A GB 1596539 A GB1596539 A GB 1596539A GB 529411 A GB529411 A GB 529411A
Authority
GB
United Kingdom
Prior art keywords
screen
cathode
coating
image
mica
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
GB15965/39A
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph 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 Marconis Wireless Telegraph Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB529411A publication Critical patent/GB529411A/en
Expired legal-status Critical Current

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
    • 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
    • H01J31/30—Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen having regulation of screen potential at anode potential, e.g. iconoscope

Abstract

529,411. Television apparatus; cathode-ray tubes. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. May 30, 1939, No. 15965. Convention date, May 31, 1938. [Classes 39 (i) and 40 (iii)] In television transmitting apparatus utilizing a cathode-ray tube with a mosaic type of image receiving screen, the screen consists of elongated parallel bars 12, Fig. 2, of light sensitive conductors, mounted on a mica &c. insulating support 11 with a back of electrically conductive material 14. The screen is completed by a thick sheet of mica 15 with a conductive coating 16 in contact with the coating 14, and a clip member 18 which is in electrical contact with the coating 16 and is connected to the external circuit. As shown in Fig. 1, the screen is mounted in an envelope 1 with a spherical window 3 through which the image is projected on to the screen. As applied to the transmission of a film 21, the pictures are projected through a slit in a mask 26 and an optical system 4, 30, 31 by which the line image is expanded over the screen in a direction parallel to the photo-sensitive bars. The electron gun assembly of conventional type is mounted in an arm of the envelope and the cathode ray is caused to scan the screen along one line only, preferably near the bottom of the screen as shown at 13.
GB15965/39A 1938-05-31 1939-05-30 Improvements in or relating to television transmitting systems Expired GB529411A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US210965A US2204250A (en) 1938-05-31 1938-05-31 Television transmitting tube

Publications (1)

Publication Number Publication Date
GB529411A true GB529411A (en) 1940-11-20

Family

ID=22785057

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15965/39A Expired GB529411A (en) 1938-05-31 1939-05-30 Improvements in or relating to television transmitting systems

Country Status (3)

Country Link
US (1) US2204250A (en)
GB (1) GB529411A (en)
NL (1) NL55458C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2661899A (en) * 1946-07-12 1953-12-08 Benjamin J Chromy Electronic calculator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2951175A (en) * 1956-10-23 1960-08-30 Fay E Null Detector system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2661899A (en) * 1946-07-12 1953-12-08 Benjamin J Chromy Electronic calculator

Also Published As

Publication number Publication date
US2204250A (en) 1940-06-11
NL55458C (en)

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