GB471109A - Improvements relating to mesh screens for use in television or like transmitting tubes - Google Patents

Improvements relating to mesh screens for use in television or like transmitting tubes

Info

Publication number
GB471109A
GB471109A GB2585/36A GB258536A GB471109A GB 471109 A GB471109 A GB 471109A GB 2585/36 A GB2585/36 A GB 2585/36A GB 258536 A GB258536 A GB 258536A GB 471109 A GB471109 A GB 471109A
Authority
GB
United Kingdom
Prior art keywords
grid
elements
upper side
jan
binder
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
GB2585/36A
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.)
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 GB471109A publication Critical patent/GB471109A/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
    • H01J29/435—Charge-storage screens using photo-emissive mosaic, e.g. for orthicon, for iconoscope with a matrix of conductors traversing the target

Abstract

471,109. Discharge apparatus. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Jan. 27, 1936, No. 2585. Convention date, Jan. 30, 1935. [Class 39 (i)] Mosaic electrodes such as double - sided photo-electric screens of cathode-ray tubes for television transmission are formed by coating a grid 12, Fig. 7, at least on its upper side, with electrically insulating material 16, distributing conductive elements 46 of area greater than the grid apertures 22 over the upper side as from a sieve 42, Fig. 5, and creating, as by a fan 38 in a chimney 36, a lower fluid pressure below the grid than above it. One element 46 is thus drawn into each aperture 22 and held there whilst surplus elements are brushed off. A binder is then applied to the upper side of the grid and the grid is baked to drive off the binder and soften the insulation 16 so that the elements 46 become partly embedded therein as shown in Fig. 7. The elements 46 may be silver spheres formed by spraying the metal into the air and are finally coated with photo-electric material on their upper surfaces. The grid apertures are open at their lower ends to expose the elements 46 to the scanning cathode-ray. The grid 12 is a flattened wire mesh or perforated plate. The mosaic is provided with a separate grid 30b .and mounted and used as described in Specification 471,137 In a modification, the grid 12 is coated only on its upper side so that its uncoated lower face serves as the grid 30b.
GB2585/36A 1935-01-30 1936-01-27 Improvements relating to mesh screens for use in television or like transmitting tubes Expired GB471109A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US4023A US2149977A (en) 1935-01-30 1935-01-30 Television transmitting tube

Publications (1)

Publication Number Publication Date
GB471109A true GB471109A (en) 1937-08-27

Family

ID=21708752

Family Applications (3)

Application Number Title Priority Date Filing Date
GB20476/36A Expired GB471137A (en) 1935-01-30 1936-01-27 Improvements relating to mesh screens for use in television or like transmitting tubes
GB22354/37A Expired GB471149A (en) 1935-01-30 1936-01-27 Improvements relating to television or like transmitting tubes
GB2585/36A Expired GB471109A (en) 1935-01-30 1936-01-27 Improvements relating to mesh screens for use in television or like transmitting tubes

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB20476/36A Expired GB471137A (en) 1935-01-30 1936-01-27 Improvements relating to mesh screens for use in television or like transmitting tubes
GB22354/37A Expired GB471149A (en) 1935-01-30 1936-01-27 Improvements relating to television or like transmitting tubes

Country Status (4)

Country Link
US (1) US2149977A (en)
FR (1) FR801014A (en)
GB (3) GB471137A (en)
NL (1) NL45434C (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2429933A (en) * 1945-08-08 1947-10-28 Western Electric Co Image translating device
US2588019A (en) * 1946-06-05 1952-03-04 Rca Corp Monoscope target for pickup tubes
US2493539A (en) * 1946-06-13 1950-01-03 Rca Corp Target for pickup tubes
US2641553A (en) * 1948-12-29 1953-06-09 Bell Telephone Labor Inc Preparation of two-sided mosaic
US2667596A (en) * 1950-11-15 1954-01-26 Rauland Corp Storage electrode for signal-converting devices
US2699511A (en) * 1951-05-04 1955-01-11 Sheldon Edward Emanuel Storage tube for invisible radiation
US2839679A (en) * 1952-05-16 1958-06-17 Franklin H Harris Half-tone memory tube
US2788466A (en) * 1952-07-17 1957-04-09 Hughes Aircraft Co Direct-viewing storage tube
US3013178A (en) * 1953-03-23 1961-12-12 Fairchild Camera Instr Co Focussing mask for cathode ray tube
US2926419A (en) * 1957-05-01 1960-03-01 Franklin H Harris Method of forming a storage electrode
US3164749A (en) * 1961-02-13 1965-01-05 Ibm Electronic component packaging
US3696741A (en) * 1969-12-03 1972-10-10 George W Reinke Foraminous printing screen
US4357368A (en) * 1978-12-26 1982-11-02 Rca Corporation Method of making a photosensitive electrode and a photosensitive electrode made thereby

Also Published As

Publication number Publication date
US2149977A (en) 1939-03-07
GB471149A (en) 1937-08-27
GB471137A (en) 1937-08-27
NL45434C (en)
FR801014A (en) 1936-07-25

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