GB422370A - Improvements in and relating to television and talking film recording - Google Patents

Improvements in and relating to television and talking film recording

Info

Publication number
GB422370A
GB422370A GB5911/34A GB591134A GB422370A GB 422370 A GB422370 A GB 422370A GB 5911/34 A GB5911/34 A GB 5911/34A GB 591134 A GB591134 A GB 591134A GB 422370 A GB422370 A GB 422370A
Authority
GB
United Kingdom
Prior art keywords
television
feb
crystal
electric field
relating
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
GB5911/34A
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.)
Sueddeutsche Telefon Apparate Kabel und Drahtwerke AG TEKADE
Original Assignee
Sueddeutsche Telefon Apparate Kabel und Drahtwerke AG TEKADE
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 Sueddeutsche Telefon Apparate Kabel und Drahtwerke AG TEKADE filed Critical Sueddeutsche Telefon Apparate Kabel und Drahtwerke AG TEKADE
Publication of GB422370A publication Critical patent/GB422370A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/0009—Materials therefor
    • G02F1/0018—Electro-optical materials

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)

Abstract

422,370. Light valves. SUDDEUTSCHE TELEFON - APPARATE KABEL-UND DRAHTWERKE AKT.- GES. TEKADE, Nuremberg, Germany. Feb. 22, 1934, No. 5911. Convention date, Feb. 22, 1933. [Class 40 (iii)] A light-valve for television and soundrecording uses the direct electro-optical doublerefraction in solid crystals, which is proportional to the applied electric field. The crystals used are translucent in the visible spectrum, electrically insulating, and are so disposed between two electrodes that the optical axis of the crystal is perpendicular or parallel to the electric field. The crystal is of an acentric group of the regular system, for example zinc blend. The Specification as open to inspection under Sect. 91 describes the use of sodium chlorate. This subject-matter does not appear in the Specification as accepted.
GB5911/34A 1933-02-22 1934-02-22 Improvements in and relating to television and talking film recording Expired GB422370A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE422370X 1933-02-22

Publications (1)

Publication Number Publication Date
GB422370A true GB422370A (en) 1935-01-10

Family

ID=6463539

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5911/34A Expired GB422370A (en) 1933-02-22 1934-02-22 Improvements in and relating to television and talking film recording

Country Status (1)

Country Link
GB (1) GB422370A (en)

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