GB514776A - Improvements in or relating to natural colour television systems - Google Patents

Improvements in or relating to natural colour television systems

Info

Publication number
GB514776A
GB514776A GB11198/38A GB1119838A GB514776A GB 514776 A GB514776 A GB 514776A GB 11198/38 A GB11198/38 A GB 11198/38A GB 1119838 A GB1119838 A GB 1119838A GB 514776 A GB514776 A GB 514776A
Authority
GB
United Kingdom
Prior art keywords
screens
lens
colour
screen
images
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
GB11198/38A
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.)
Scophony Ltd
Original Assignee
Scophony 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
Priority to BE433790D priority Critical patent/BE433790A/xx
Application filed by Scophony Ltd filed Critical Scophony Ltd
Priority to GB11198/38A priority patent/GB514776A/en
Priority to US266876A priority patent/US2330172A/en
Priority to FR852961D priority patent/FR852961A/en
Publication of GB514776A publication Critical patent/GB514776A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • 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
    • H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
    • H01J31/20—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes for displaying images or patterns in two or more colours
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2231/00—Cathode ray tubes or electron beam tubes
    • H01J2231/12—CRTs having luminescent screens
    • H01J2231/125—CRTs having luminescent screens with a plurality of electron guns within the tube envelope
    • H01J2231/1255—CRTs having luminescent screens with a plurality of electron guns within the tube envelope two or more neck portions containing one or more guns

Abstract

514,776. Television ; cathode-ray tubes. SCOPHONY, Ltd., and ROSENTHAL, A. H. April 12, 1938, No. 11198. [Classes 39 (i) and 40 (iii)] Alkali-halide and like screens of the kind described in Specification 513,776 are used in a television receiver utilizing the subtractive method of colour reproduction. Incoming signals, e.g., corresponding to three primary colours, are applied to produce reversed images on the screens 7, 8, 9, as described in that Specification, the colour of each image being complementary to the corresponding primary colour. White light from a source 17 is projected successively through each screen to produce the coloured image at 18. The source 17 is imaged on lens 20 which images the screen 7 on the screen 8, while lens 21 images lens 20 on lens 22 and so on. The colour of the transparencies 7, 8 and 9 is dependent on the material and temperature of the screens. The screens must therefore be maintained at constant temperature, as by thermostat control 11. Two of the screens may be placed back-to-back in a common container and scanned from opposite sides, Fig. 2 (not shown).
GB11198/38A 1938-04-12 1938-04-12 Improvements in or relating to natural colour television systems Expired GB514776A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE433790D BE433790A (en) 1938-04-12
GB11198/38A GB514776A (en) 1938-04-12 1938-04-12 Improvements in or relating to natural colour television systems
US266876A US2330172A (en) 1938-04-12 1939-04-08 Color television
FR852961D FR852961A (en) 1938-04-12 1939-04-12 Color television enhancements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB11198/38A GB514776A (en) 1938-04-12 1938-04-12 Improvements in or relating to natural colour television systems

Publications (1)

Publication Number Publication Date
GB514776A true GB514776A (en) 1939-11-17

Family

ID=9981819

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11198/38A Expired GB514776A (en) 1938-04-12 1938-04-12 Improvements in or relating to natural colour television systems

Country Status (4)

Country Link
US (1) US2330172A (en)
BE (1) BE433790A (en)
FR (1) FR852961A (en)
GB (1) GB514776A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2418780A (en) * 1942-11-28 1947-04-08 Rca Corp Alkali halide target with contrasting colors
US2432908A (en) * 1942-07-22 1947-12-16 Rca Corp Cathode-ray target and method of manufacture
US2452522A (en) * 1941-03-18 1948-10-26 Rca Corp Luminescent screen and method of developing light
US2958258A (en) * 1953-09-21 1960-11-01 Technicolor Corp Optical projection of beam controlled object fields
GB2194382A (en) * 1986-08-21 1988-03-02 Bailey Concepts Limited Cathode ray tube with heated screen

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2416574A (en) * 1943-04-08 1947-02-25 Gen Electric Discriminative alkali halide screen
US2415226A (en) * 1943-11-29 1947-02-04 Rca Corp Method of and apparatus for producing luminous images
US2448476A (en) * 1943-12-03 1948-08-31 Rauland Corp Cathode-ray projector tube
US2455710A (en) * 1943-12-21 1948-12-07 Rauland Corp Color television system
US2422943A (en) * 1944-02-01 1947-06-24 Gen Electric Electron microscope
US2480848A (en) * 1944-07-11 1949-09-06 Geer Charles Willard Color television device
US2481839A (en) * 1944-08-05 1949-09-13 Rca Corp Color television
US2472988A (en) * 1944-10-28 1949-06-14 Scophony Corp Of America Apparatus for reproducing electric signals, particularly television reproducers
US2569911A (en) * 1944-12-18 1951-10-02 Electronbeam Ltd Signal storing device and proportional-control circuits therefor
US2461515A (en) * 1945-07-16 1949-02-15 Arthur B Bronwell Color television system
DE838169C (en) * 1946-02-09 1952-03-27 Compagnie Generale de Telegraphie sans FiI, Paris Vacuum tube with a beam of particles (electrons) to excite a luminous phenomenon
US2577756A (en) * 1946-06-03 1951-12-11 Thomas T Harrington Color television
US2545974A (en) * 1946-06-11 1951-03-20 Rca Corp Color television tube
US2534846A (en) * 1946-06-20 1950-12-19 Emi Ltd Color filter
US2500929A (en) * 1946-07-12 1950-03-21 Chilowsky Constantin Means for reproducing television images
US2601328A (en) * 1947-09-20 1952-06-24 Skiatron Electronies And Telev Color television
US2616962A (en) * 1947-10-15 1952-11-04 Brush Dev Co Electrical light-transmission controlling arrangement
US2704783A (en) * 1948-08-14 1955-03-22 Rca Corp Color television receiving system
US2645976A (en) * 1949-08-05 1953-07-21 Rca Corp Subtractive color television
US2653183A (en) * 1949-10-28 1953-09-22 Rca Corp Additive color television
NL163740B (en) * 1950-09-04 Hydro Ban Corp SUITABLE FOR ROOF COVERING, LAMINATE MADE OF A LIQUID-IMPERFECT SYNTHETIC POLYMER AND AN ELASTOMER MATERIAL.
CH283608A (en) * 1950-09-18 1952-06-15 Gretener Edgar Ing Dr Device for the simultaneous projection of several individual images composing a television image.
US2683834A (en) * 1950-10-07 1954-07-13 Wright Arthur Cathode-ray tube for color television receivers
US2811579A (en) * 1951-01-29 1957-10-29 Hazeltine Research Inc Color-television electro-optical apparatus
US2819332A (en) * 1951-05-21 1958-01-07 Via Joseph La Color television display system
US2764627A (en) * 1952-01-18 1956-09-25 Johnson Marvin Bernard Television systems
US2685609A (en) * 1952-04-21 1954-08-03 Via Joseph La Color television
US2832818A (en) * 1954-03-24 1958-04-29 Fairchild Camera Instr Co Video-signal generator
NL197714A (en) * 1954-06-01 1900-01-01
US2863084A (en) * 1955-06-27 1958-12-02 Westinghouse Electric Corp Cathode-ray device
JPS5130967B1 (en) * 1970-11-27 1976-09-03

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452522A (en) * 1941-03-18 1948-10-26 Rca Corp Luminescent screen and method of developing light
US2432908A (en) * 1942-07-22 1947-12-16 Rca Corp Cathode-ray target and method of manufacture
US2418780A (en) * 1942-11-28 1947-04-08 Rca Corp Alkali halide target with contrasting colors
US2958258A (en) * 1953-09-21 1960-11-01 Technicolor Corp Optical projection of beam controlled object fields
GB2194382A (en) * 1986-08-21 1988-03-02 Bailey Concepts Limited Cathode ray tube with heated screen

Also Published As

Publication number Publication date
US2330172A (en) 1943-09-21
FR852961A (en) 1940-03-07
BE433790A (en)

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