Liquid crystal device |
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IPC classes for russian patent Liquid crystal device (RU 2141683):
 
 The liquid crystal display element / 2140663
The invention relates to a display device, particularly to a liquid crystal cell, and can be used in the means of the indicator devices
 Optical polarizer / 2140662
The invention relates to optics, namely, optical polarizers, which can be used in the production of polarizing films and glasses
 Optical polarizer / 2140097
The invention relates to optics, and in particular to optical polarizers
 Plasma device for liquid crystal display / 2139560
 Lcd display / 2139559
The invention relates to a display device, particularly to a liquid crystal display (LCD) displays
 A liquid-crystal spatial-temporal light modulator for optical information processing / 2134440
The invention relates to the field of optical instrument, in particular for the construction sitopaladi liquid crystal-spatial light modulators for input and processing of optical information, such as holography and intracavity readout image
 Converter image / 2130631
The invention relates to the field of optoelectronics and may find application in devices for optical information processing
 Glass filter for welding / 2126548
Glass filter for welding / 2126548
 Matrix managed thin-film reflectors intended for use in an optical projection system, and method of its manufacture / 2125347
The invention relates to optical projection system
 Light diode projector and method for presenting information on display / 2248025
Device has reflector, means for producing image and optical system for projecting image on display, as light source a board with light diodes is used, light flows of which are concentrated on an optical system. Protector is provided with sensor of outer light level and connected to common current adjuster.
 Bistable liquid-crystal units / 2253888
At least two stable or metastable ordering of liquid crystal are realized. Switching aid which causes the switching of liquid crystal material between switches has aid intended for optical illumination of the device. Device can provide the supply of linear polarized light for inducing torsion in liquid crystal. Alternatively ordering of liquid crystal can be switched by means of aid for supplying second energy, for example, electric field. In this case light serves to generate heat which helps to switching. One or both energy sources can be used locally for switching chosen areas or pixels. Energy levels on bistable substrate can be controlled by using oligomer adding (slippery surface).
Bistable liquid-crystal units / 2253888
At least two stable or metastable ordering of liquid crystal are realized. Switching aid which causes the switching of liquid crystal material between switches has aid intended for optical illumination of the device. Device can provide the supply of linear polarized light for inducing torsion in liquid crystal. Alternatively ordering of liquid crystal can be switched by means of aid for supplying second energy, for example, electric field. In this case light serves to generate heat which helps to switching. One or both energy sources can be used locally for switching chosen areas or pixels. Energy levels on bistable substrate can be controlled by using oligomer adding (slippery surface).
Method of making polarizing cell / 2259577
Method is based upon orientation of liquid crystals disposed between two substrates. Diffraction gratings with line frequency higher than 500 lines/mm and height of micro-relief of 0,1-04, mc are formed onto the surfaces of substrates. Gratings are disposed to have gap of 10-50 mc and at random angle. Liquid crystals are oriented along lines of gratings.
Liquid crystal display / 2260921
Device has back wall, made of metallic alloy with flowing limit Re = 210-280 N/mm2 and durability limit Rm = 270-410 N/mm2.
Liquid crystal display / 2260921
Device has back wall, made of metallic alloy with flowing limit Re = 210-280 N/mm2 and durability limit Rm = 270-410 N/mm2.
Liquid crystal display / 2260921
Device has back wall, made of metallic alloy with flowing limit Re = 210-280 N/mm2 and durability limit Rm = 270-410 N/mm2.
 Liquid-crystalline display element / 2264641
Element has liquid crystal layer, encased between two substrates with transparent electrodes, while at least one of electrodes is divided on stripes, widths of which are picked on basis of Fresnel lens forming law, and output mask with slits, combined with focuses of Fresnel lenses. Element additionally has input mask with slits, raster capacitor, second electrode is divided on stripes, widths of which are picked from same Fresnel lens forming law, focal distances of both Fresnel lenses are set equal, but for different wave lengths.
 Universal switched mirror / 2271027
Universal mirror has mirror, case, holder and radiation receiver. Assembly has at least two mirrors and at least one polarization filter and device for mounting mirrors in series into working position. Polarization filter is fixed onto at least one mirror. Assembly is made for installation of mirror without filter into working position, or at least one mirror with at least one polarization filter. Mirror being at working position provides ability of reflecting of incident radiation to radiation receiver.
 Counter-dazzling glasses / 2273039
Counter-dazzling glasses have frame with glasses, protective screen with cells and a matrix of light-sensitive elements, electrically connected to protective screen, additionally included is infrared eye pupil position indicator, generating signal under effect from infrared radiation from pupil, gate matrix with normally darkened cells and slit formed in it imitating eye pupil position, adjusting assemblies. Gate matrix is electrically connected to infrared pupil position indicator through adjustment assemblies, is mounted with possible letting of dazzling radiation through slit formed in it onto matrix of light-sensitive elements and following transmission of signal to it for darkening of protective screen cells for protecting pupil from dazzling radiation.
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(57) Abstract: The invention relates to the field of molecular electronics and can be used in optoelectronic devices. Technical result: get an additional plane-polarized light. The device comprises two parallel spaced transparent plates with transparent electrodes on the inner sides, between which there is a film of polymer dispersed cholesteric liquid crystal with positive dielectric anisotropy. Macromolecules in the polymer film is oriented in one direction. Depending on the value of applied electric field, the device can be in three different optical States: diffuse light of any polarization to pass only one plane-polarized component of light to pass light of any polarization. 3 Il. The invention relates to the field of molecular electronics and can be used in optoelectronic devices, display devices and information processing, in particular, in laser installations instrumentation. Known liquid crystal display (LCD) device [1], containing two Pai is a film of polymer dispersed nematic liquid crystal (KNIC), and axisymmetric drops NLC with positive dielectric anisotropy is oriented in one direction in the film plane, and the refractive index of the ordinary ray in NLC n1coincides with the refractive index of the polymer np. This KNIK film in the original case intensively diffuses the light, the polarization plane of which is parallel to the direction of orientation of the NLC droplets, and at the same time, the film is transparent to light, the polarization plane of which is perpendicular to the direction of orientation of the NLC droplets. Under the influence of an electric field, the film becomes transparent to light with any polarization. A disadvantage of the known LCD devices is the lack of ability to realize an optical condition in which scatters the light of any polarization. The closest to the technical nature of the claimed is a liquid crystal device [2], contains two parallel spaced transparent plates with transparent electrodes on the inner sides, between which there is a film of polymer dispersed cholesteric liquid crystal (KPZK) with positive dielectric anisotropy and refractive index of ordinary l the axis oriented by the electric field Kharkiv oil factory) coincides with the refractive index of the polymer np. KHJK film in the original case dissipates normally incident light of any polarization, and under the influence of an electric field enters the transparent state to light of any polarization. A disadvantage of the known device is that you cannot highlight it using the plane-polarized light. The technical result of the invention is to provide a LCD device, which allows in addition to obtain the plane-polarized light. This objective is achieved in that, in the LCD device containing two parallel spaced transparent plates with transparent electrodes on the inner sides, between which is polymer dispersed cholesteric liquid crystal with positive dielectric anisotropy, as a polymer is used anisotropic polymer film, in which the macromolecules of the polymer are oriented in the same direction. The invention is illustrated in Fig. 1, 2 and 3. The LCD device includes two parallel transparent plate 1, on the inner sides of which are covered with the transparent electrodes 2, between which there is a film encapsulated polymarker schematically show macromolecule polymer, oriented in the same direction. The dashed lines in drops indicate the local orientation of the molecules Kharkiv oil factory in this section drops. Cholesteric LC droplets in the initial state (U=0) (Fig. 1 is arranged so as to form a layered structure having a center of inversion (the axis of the helical structure of cholesteric directed along the radius of the droplet). Film with such a structure drops Kharkiv oil factory intensively diffuses the light with any polarization. In Fig. 2 shows that under the action of an electric field U=U1drops Kharkiv oil factory reoriented so that the axis of the spiral structure in all droplets of cholesteric will lie in the plane of the film perpendicular to the direction of orientation of the macromolecules of the polymer. In this case, the liquid crystal device intensively scatters light polarized parallel to the direction of orientation of the macromolecules, and at the same time, transmits the light polarized perpendicular to the direction of orientation of the macromolecules. In Fig. 3 shows that the increase of the field to the value U=U2leads to a complete promotion helical structure Kharkiv oil factory and a homogeneous orientation of the optical axis in all droplets perpendicular to the film plane. When this liquid crystal device becomes the AI of the proposed design was made LCD device using the following operations:1. made of cholesteric liquid crystal with positive dielectric anisotropy and refractive index of n1equal to the refractive index of the polymer; 2. made KHJK film, in which the macromolecules of the polymer are oriented in the same direction; 3. assembled LCD device, that is, KHJK film placed between two parallel transparent plates with transparent electrodes and produced by gluing device. The LCD device has the following characteristics (transmittance was measured using passing through the LCD device diafragmirovanija radiation of helium-neon laser; = 0,633 μm): The control voltage U1- 75 B The control voltage U2- 380 B The switching time of 0.9 MS The off time of 2.6 MS The spectral range of 0.4oC 3.0 mm The transmittance of parallel components (U=0) - 1% The transmittance perpendicular components (U=0) - 2% The transmittance of parallel components (U=U1) - 1% The transmittance perpendicular components (U=U1) - 46% The transmittance of parallel components (U=U2) - 51% The transmittance perpendicular components (U main characteristics (the value of the control voltage, performance and others) is not inferior to the prototype. At the same time received such additional quality as the ability to pass only the plane-polarized light. We offer LCD device is promising for use in such devices where you want to have a compact, cheap, easy to manufacture, and operation control of the optical radiation that is able to work as a polarizer of light as a modulator of only one plane-polarized components of the radiation and as a modulator of unpolarized radiation. Such elements are promising devices in telecommunications, optical processors, displays, optical memory storage devices, laser machines, etc. Literature 1. V. Ya.Zyryanov, S. L. Smorgon, V. F. Shabanov. Elongated films of polymer-dispersed liquid crystals as scattering polarizers// Molecular Engineering. - 1992. - Vol.1. - P. 305-310. 2. C. J. Zyryanov, S. L. Smorgon, C. A. Zhuikov, V. F. Shabanov. The memory effects in polymer dispersed cholesteric liquid crystals// JETP Letters. - 1994. , 59, Vol.8.- S. 520-522. The liquid crystal device containing two parallel spaced transparent plates with transparent electrodes on the inner sides, between which is located the second anisotropy, characterized in that the polymer is made in the form of an anisotropic polymer film with the orientation of the macromolecules in the same direction, and the axis of the spiral structure in all droplets of cholesteric located in the plane of the film perpendicular to the direction of orientation of the macromolecules of the polymer.
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