GB438716A - Improvements in or relating to television, picture telegraphy and the like - Google Patents

Improvements in or relating to television, picture telegraphy and the like

Info

Publication number
GB438716A
GB438716A GB2780835A GB2780835A GB438716A GB 438716 A GB438716 A GB 438716A GB 2780835 A GB2780835 A GB 2780835A GB 2780835 A GB2780835 A GB 2780835A GB 438716 A GB438716 A GB 438716A
Authority
GB
United Kingdom
Prior art keywords
cathode
coil
image
picture
tube
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
GB2780835A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2780835A priority Critical patent/GB438716A/en
Publication of GB438716A publication Critical patent/GB438716A/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

Abstract

438,716. Television &c. SCHIFF, L., 26, Augustastrasse, Lichterfelde, Berlin. April 9, 1934, No. 27808 /35. Divided out of 439,737. [Classes 39 (i) and 40 (iii)] A small optical image of a picture to be transmitted is focused on to a photo-electric layer on the cathode 27 of a cathode - ray tube 11 and the electron image so produced, in which the density of electrons emitted from different points of the cathode corresponds to the brightness of the points of the picture, is reproduced on an enlarged scale in another plane 16 of the tube by means of a coil 20 or by an electrostatic device or a combination of coil and electrostatic device. The electron rays are deflected as by plates 18, 19 so that the enlarged image in the plane 16 is scanned in zigzag manner by the peak of a fixed electrode 29 connected to the grid of an amplifier 25. A grid anode 28 co-operates with the cathode 27, and the coil 20 is between this anode and the deflecting plates. The optical image is focused on to the cathode 27 through a window 26 in the tube 11. The electron image may be enlarged several times before being scanned by the electrode 29.
GB2780835A 1934-04-09 1934-04-09 Improvements in or relating to television, picture telegraphy and the like Expired GB438716A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2780835A GB438716A (en) 1934-04-09 1934-04-09 Improvements in or relating to television, picture telegraphy and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2780835A GB438716A (en) 1934-04-09 1934-04-09 Improvements in or relating to television, picture telegraphy and the like

Publications (1)

Publication Number Publication Date
GB438716A true GB438716A (en) 1935-11-11

Family

ID=10265629

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2780835A Expired GB438716A (en) 1934-04-09 1934-04-09 Improvements in or relating to television, picture telegraphy and the like

Country Status (1)

Country Link
GB (1) GB438716A (en)

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