DE473650C - Arrangement for light control - Google Patents

Arrangement for light control

Info

Publication number
DE473650C
DE473650C DET30712D DET0030712D DE473650C DE 473650 C DE473650 C DE 473650C DE T30712 D DET30712 D DE T30712D DE T0030712 D DET0030712 D DE T0030712D DE 473650 C DE473650 C DE 473650C
Authority
DE
Germany
Prior art keywords
arrangement
light control
kerr
kerr cell
effect
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
DET30712D
Other languages
German (de)
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.)
Telefunken AG
Original Assignee
Telefunken AG
Publication date
Priority to DET30712D priority Critical patent/DE473650C/en
Application granted granted Critical
Publication of DE473650C publication Critical patent/DE473650C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 for the control of the intensity, phase, polarisation or colour 
    • G02F1/07Devices 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 for the control of the intensity, phase, polarisation or colour  based on electro-optical liquids exhibiting Kerr effect

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Communication System (AREA)

Description

Anordnung für Lichtsteuerung Eine Hauptschwierigkeit bei der Ausnutzung des elektrostatischen Kerr-Effektes besteht darin, daß die für .diesen Effekt in Betracht kommenden Flüssigkeiten hoher Dielektrizitätskonstante ein verhältnismäßig sehr großes und sich veränderndes Leitvermögen haben. Nach der vorliegenden Erfindung werden die durch das Leitvermögen entstehenden Schwierigkeiten -dadurch aufgehoben bzw. unwirksam gemacht, daß an der Kerr-Zelle nux Beeinflussungen durch ganz hohe Frequenzen, annähernd io6 Perioden bzw. noch höhere Frequenzen, zur Anwendung gelangen. Dadurch wird eine viel, größere Emp-findlichkeitder Relaisanordnung erzielt. Zweckmäßig wird man dann, entsprechend der in der Zeichnung dargestellten Schaltung, meistens so vorgehen, daß man die empfangenen Zeichen oder Töne oder sonstigen Veränderungen auf eine kleine Hochfrequenzgeneratorröhre als Modulation einwirken läßt.Arrangement for lighting control A major difficulty in exploitation of the electrostatic Kerr effect is that the for .this effect in Considerable liquids of high dielectric constant a relatively have very large and changing conductivity. According to the present invention the difficulties arising from the conductivity are thereby eliminated or made ineffective that on the Kerr cell nux influences by very high Frequencies, approximately 10 6 periods or even higher frequencies, are used. This achieves a much greater sensitivity in the relay arrangement. Appropriate you will then, according to the circuit shown in the drawing, mostly proceed in such a way that one changes the received characters or sounds or other changes can act on a small high frequency generator tube as modulation.

In. der Zeichnung stellt F :eine Generatorröhre in Dreipunktschaltung dar. An dem Kondensator des Schwingungskreises ist eine Kerr-Zelle e angeschlossen. Der Generator erzeugt eine Frequenz von io6 oder einer noch höheren Größenanordnung. Die ankommeA-den oder wiederzugebenden Zeichen werden über eine Leitung u an das Gitter eines Steuerrohres b gebracht. Dieses Steuerrohr liegt parallel zur Gitter-Kathode-Strecke des eigentlichen Schwingungsrohres. Wie ersichtlich, entstehen folglich an. der Kerr-Zelle Spannungsschwankungen von einer Frequenz, die sich um die relativ niedrigen Zeichenfrequenzen von der Schwingungsfrequenz des Senders unterscheidet. Es findet demnach eine Steuerung der Kerr-Zelle mit hochfrequenten Spannungen statt, wodurch die Nachteile, die durch die Leitfähigkeit des Dielektrikums bedingt sind, verschwinden.In. of the drawing represents F: a generator tube in three-point connection A Kerr cell e is connected to the capacitor of the resonant circuit. The generator produces a frequency of io6 or an even higher order of magnitude. The incoming characters or characters to be reproduced are transmitted to the Lattice of a control tube brought b. This control tube lies parallel to the grid-cathode section of the actual vibration tube. As can be seen, consequently arise. the Kerr cell voltage fluctuations from a frequency that is relatively low Character frequencies differs from the vibration frequency of the transmitter. It finds accordingly a control of the Kerr cell with high-frequency voltages instead, whereby the disadvantages caused by the conductivity of the dielectric disappear.

Claims (1)

PATENTANSPRÜCHE: i. Anordnung für Lichtsteuerung unter Ausnutzung des elektrischen Kerr-Effektes in Flüssigkeiten hoher Dielektrizitiätskon--stante, dadurch gekennzeichnet, daß zur Steuerung der Kerr-Zelle Frequenzen verwendet werden, die von der Größenordnung I o6 sind. a. Anordnung nach Anspruch i, dadurch gekennzeichnet, daß die wiederzugebenden Zeichen als Modulation auf die an der, Kerr-Zelle liegende Hochfrequenzspannung zur Wirkung kommen. PATENT CLAIMS: i. Arrangement for light control utilizing the electrical Kerr effect in liquids of high dielectric constant, characterized in that frequencies of the order of magnitude I o6 are used to control the Kerr cell. a. Arrangement according to Claim i, characterized in that the characters to be reproduced come into effect as a modulation on the high-frequency voltage applied to the Kerr cell.
DET30712D Arrangement for light control Expired DE473650C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DET30712D DE473650C (en) Arrangement for light control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET30712D DE473650C (en) Arrangement for light control

Publications (1)

Publication Number Publication Date
DE473650C true DE473650C (en) 1929-03-21

Family

ID=7555795

Family Applications (1)

Application Number Title Priority Date Filing Date
DET30712D Expired DE473650C (en) Arrangement for light control

Country Status (1)

Country Link
DE (1) DE473650C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1139371B (en) * 1958-09-24 1962-11-08 Atomic Energy Authority Uk Short-term shutter for photographic cameras

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1139371B (en) * 1958-09-24 1962-11-08 Atomic Energy Authority Uk Short-term shutter for photographic cameras

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