DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS (optical transfer means between sensing member and indicating or recording part in connection with measuring Fulltext... Hierarchy... Expanded...G01D 5/26; devices in which mathematical operations are carried out with optical elements Fulltext... Hierarchy... Expanded...G06G 9/00; electrical signal transmission systems using optical means to convert the input signal Fulltext... Hierarchy... Expanded...G08C 19/36; information-recording by electric or magnetic means and reproducing by sensing optical properties Fulltext... Hierarchy... Expanded...G11B 11/00; static stores using optical elements Fulltext... Hierarchy... Expanded...G11C 13/04; transmission systems employing electromagnetic waves other than radio waves, e.g. light, infra-red radiation, Fulltext... Hierarchy... Expanded...H04B 9/00; pictorial communication, e.g. television Fulltext... Hierarchy... Expanded...H04N)
devices or arrangements, e.g. cells, the optical operation of which is modified by changing the optical properties of the medium of the devices or arrangements by the influence or control of physical parameters, e.g. electric fields, electric current, magnetic fields, sound or mechanical vibrations, stress or thermal effects; [2]
devices or arrangements in which the electric or magnetic field component of the light beams influences the optical properties of the medium, i.e. non-linear optics; [2]
control of light by electromagnetic waves, e.g. radio waves, or by electrons or other elementary particles. [2]
based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect [2]
G02F 1/05
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with ferro-electric properties [2]
G02F 1/055
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the active material being a ceramic [4]
G02F 1/07
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based on electro-optical liquids exhibiting Kerr effect [2]
G02F 1/09
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based on magneto-optical elements, e.g. exhibiting Faraday effect [2]
G02F 1/11
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based on acousto-optical elements, e.g. using variable diffraction by sound or like mechanical waves (acousto-optical deflection Fulltext... Hierarchy... Expanded...G02F 1/33) [3]
Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements [3]
G02F 1/135
· · · ·
Liquid crystal cells structurally associated with a supplementary layer, e.g. a photoconducting or a ferro-electric layer, the properties of which can be electrically or optically varied [3]
G02F 1/137
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characterised by a particular electro- or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction, dynamic scattering [3]
for the control of the position or the direction of light beams, i.e. deflection (static stores with electric or magnetic read-in and optical read-out Fulltext... Hierarchy... Expanded...G11C; lasers provided with means to change the location from which, or the direction in which, laser radiation is emitted Fulltext... Hierarchy... Expanded...H01S 3/101) [2]