GB720532A - Improvements in or relating to light modulating screens - Google Patents

Improvements in or relating to light modulating screens

Info

Publication number
GB720532A
GB720532A GB13836/50A GB1383650A GB720532A GB 720532 A GB720532 A GB 720532A GB 13836/50 A GB13836/50 A GB 13836/50A GB 1383650 A GB1383650 A GB 1383650A GB 720532 A GB720532 A GB 720532A
Authority
GB
United Kingdom
Prior art keywords
screen
light
layer
june
cathode
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
GB13836/50A
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.)
Compteurs Schlumberger SA
Original Assignee
Compteurs Schlumberger SA
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 Compteurs Schlumberger SA filed Critical Compteurs Schlumberger SA
Publication of GB720532A publication Critical patent/GB720532A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • H04N5/7416—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal
    • H04N5/7425—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal the modulator being a dielectric deformable layer controlled by an electron beam, e.g. eidophor projector

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Overhead Projectors And Projection Screens (AREA)

Abstract

720,532. Cathode-ray tubes. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ. June 2, 1950 [June 2, 1949], No. 13836/50. Drawings to Specification. Class 39 (1) [Also in Group XL(b)] The light-modulating screen of a cathode-ray tube has a layer of a substance, the refractive index or light absorption of which is modulated by radiation, the layer having a semi-transparent coating on both sides. A layer of potassium chloride, for example, is coated on both sides with aluminium to form a screen which is scanned by a modulated electron beam to reflect light on to the image screen. In another method, the light is projected through the screen, the amount absorbed depending upon the intensity of the electron beam. X-rays, gamma rays or ultraviolet rays can form the scanning radiation.
GB13836/50A 1949-06-02 1950-06-02 Improvements in or relating to light modulating screens Expired GB720532A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR993098T 1949-06-02

Publications (1)

Publication Number Publication Date
GB720532A true GB720532A (en) 1954-12-22

Family

ID=9555387

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13836/50A Expired GB720532A (en) 1949-06-02 1950-06-02 Improvements in or relating to light modulating screens

Country Status (2)

Country Link
FR (1) FR993098A (en)
GB (1) GB720532A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2969474A (en) * 1956-03-19 1961-01-24 Westinghouse Electric Corp Kinescope screen for daylight viewing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2969474A (en) * 1956-03-19 1961-01-24 Westinghouse Electric Corp Kinescope screen for daylight viewing

Also Published As

Publication number Publication date
FR993098A (en) 1951-10-26

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