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Microobject image formation method (versions) and device for its implementation (versions) Invention relates to microscopy. According to the method, microobject image formation is implemented with the help of a confocal scanning microscope. In the process of radiation focusing onto the survey plane and in the process of radiation focusing on the reception slot diaphragm one ensures change of the diffraction maximum sizes of each point image within the focusing plane, narrowing it in one direction relative to the other ones. One performs additional scanning of the microobject being surveyed in several different directions, simultaneously recording the coordinates of movement of the microobject being surveyed and photoelectric signals. Orientation of the direction of narrowing of the diffraction maximum and the slot diaphragms remains unchanged relative to the scanning direction. One performs consolidated electronic processing of photoelectric signals registered in the primary and the additional directions of scanning and the coordinates of movement of the microobject being surveyed that correspond to such directions. |
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Electroconductive adhesive for electrochromic devices Electroconductive adhesive contains the following components in the following ratios, wt %: 20-60 polymer-oligomer complex with adhesive properties, 3-20 ion source, 20-70 solvent. The polymer-oligomer complex used is a hydrogen-bond stoichiometric complex obtained from high-molecular weight polyvinyl pyrrolidone, taken in amount of 50-80 wt %, and oligomeric polyethylene glycol telechelic, taken in amount of 20-50 wt %. A method of obtaining an electrolyte includes mixing said components in a mixer to obtain a homogeneous transparent viscous composition. The electrochromic device has two substrates with an optically transparent conducting layer between which there is an electrochromic layer in form of an oxide or polymer film, said electrolyte and a counter electrode. |
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Polysiloxane copolymers with hydrophilic polymer terminal chains Invention relates to polysiloxane copolymers with one or two hydrophilic terminal polymer chains and their application for obtaining contact lenses. Claimed is actinically-linked linear polysiloxane copolymer, obtained by mixing hydrophilic vinyl monomer and/or vinylacetate with radical-generating polysiloxane of particular structure with obtaining capable of polymerisation composition, by irradiation of composition by ultraviolet radiation and covalent binding of ethylene-unsaturated group to polysiloxane copolymer with extended chain by realisation of reaction between it and vinyl monomer functionalised by ethylene bond. Also claimed is contact lens, obtained with application of said polysiloxane copolymer. |
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Flexible non-linear laser scanning microscope for non-invasive 3d detection Invention relates to a non-linear laser scanning microscope for flexible non-invasive detection, in particular, on human and animal tissues as well as in non-living matter. The measuring head (4) is flexibly connected (via transmitting optics (3)) to at least one light source (1) freely positioned in the space. For orientation of the excitation beam (11) at least one controllable flap-down mirror (2) is positioned so that to orient the excitation beam (11) through the transmitting optics (3) in any position of the measuring head (4) concentrically to the optical element (44) of the measuring head (4) with a restricted aperture. The testing beam (43) drawn from the excitation beam (11) is positioned on the photodetector (5) in a position conjugated with the target position (41) of the excitation beam (11) controlled for the medium orientation of the testing beam (43). The control unit (6) controls the flap-down mirror (2) with the excitation beam (11) direction stabilisation implemented depending on the determined deviation. |
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Method of producing integrated optical circuit on glass substrate with horn-shaped waveguide According to the method, one of the planes of a glass substrate is coated with a masking layer having openings for forming an integrated optical circuit with a channel waveguide for radiation input. A needle-shaped cathode is placed on the opposite plane of the glass substrate, opposite the channel waveguide at the edge of the substrate. The glass substrate is brought into contact with a molten salt containing ions that are capable of increasing the refraction index of glass during diffusion. A stimulating voltage is applied between the needle-shaped cathode and the molten salt with an anode. |
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Apparatus for fixing optical sighting device Apparatus for fixing an optical sighting device consists of a mounting plate 1 on which there are opposite blind-end graded slots 2. Supports 4 are mounted in the slots 2 such that they are able to rotate on axes 3, said supports having a radius surface 5 on which there are liners 6 made of elastic material, the outer side of which has a slant 7. The axes 3 are mounted in slots 8 perpendicular to the graded slots 2 and are fixed with screws 9. In the graded slots 2 under the supports 4, there are plate springs 10, one end of which forced into a cut 11 made in the step 12 of the slot 2 and the other rests on the edge of the supports 4. |
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Image projecting light-emitting system Invention refers to illumination engineering and is intended to form controlled image (10) of illuminated spots (11a-11b) on remote plane (3) of the projected image. Light-emitting system (1) includes a variety of individually controlled light-emitting devices (6a-6c) made in matrix (5) of light-emitting devices with pitch (PLS) of light-emitting devices, and optic system (7) arranged between matrix (5) of light-emitting devices and plane (3) of the projected image. Optic system (7) has the possibility of projecting the light emitted by matrix (5) of light-emitting devices onto plane (3) of the projected image in the form of projected matrix of illuminated spots (11a-11c) having pitch (Pspot) of the projected image, which exceeds pitch (PLS) of light-emitting devices. |
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Luminance field scanning method and photooptic system for realising said method Method of scanning a luminance field with a photooptic system with a linear matrix receiver includes rotating the image of the luminance field, receiving and converting, using the linear matrix receiver, optical radiation into electrical signals and processing said signals. When the linear matrix receiver is rotated at a rate of ωLMR, the image of the luminance field is rotated around the sight axis of the photooptic system at a rate of ωS=ωI+ωLMR, where ωI is the rotational speed of the image of the luminance field for ωLMR=0. The photooptic system comprises series-connected lens, main mirror, prism, correcting lens, linear matrix receiver, signal processing unit with a linear matrix receiver, as well as a rotary drive for the housing of the prism, having series-connected phase detector, low-pass filter and dc motor, as well as a prism rotational angle sensor. |
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Optical sectioning of sample and detection of particles in sample Invention relates to an apparatus, a method and a system for analysing a nonhomogeneous liquid sample, which includes obtaining a plurality of images of said sample arranged relative to a sample device. The disclosed apparatus comprises at least a first optical detection assembly having an optical axis and at least one translation unit arranged to move the sample device and the first optical detection assembly relative to each other. The movement of the sample device and the first optical detection assembly relative to each other is along a scanning path, which forms an angle θ with the optical axis, wherein θ ranges from about 60 degrees to about 89.5 degrees. The disclosed method of analysing a nonhomogeneous liquid sample includes obtaining a plurality of images of said sample and comprises steps of arranging a sample relative to the sample device; arranging the sample device relative to said apparatus; moving the sample device and the first detection assembly relative to each other on the scanning length, wherein the movement includes movement in the direction along the first scanning path which forms an angle θ with the optical axis, where θ ranges from about 60 degrees to about 89.5 degrees, wherein electromagnetic waves are transmitted from an image illumination device through an imaging region in the direction of an imaging device and a plurality of images are obtained. |
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Optical element for asymmetric light distribution Optical element (2) for collimating light from a light source (3) is made from a single piece of material and comprises: an input side (5) arranged to receive light, an output side (6) arranged to allow emission of collimated light, and an element body extending from said input side (5) to the output side (6). The element body has a cross-section perpendicular to an optical axis (z) formed by x and y axes that are perpendicular to each other. The output side (6) has an oval shape in the cross-section. The optical element (2) has a y curvature radius along the y axis which is greater than the x curvature radius along the x axis, thereby enabling distribution of collimated light emitted from the output side (6) to have a cross-section of an oval shape (CE) perpendicular to the optical axis (z). The refraction index of the element body is greater than that of the ambient medium and the x and y curvature radii are selected to satisfy the total internal reflection condition. |
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Antireflection optical device and method of making standard mould Device has a base and a plurality of convex and concave structural elements arranged on the surface of the base with spacing which is equal to or less than the wavelength of visible light. The structural elements form a plurality of tracks and form a structure of a quadrangular or quasi-quadrangular array. In one version, each structural element has the shape of an elliptical or truncated elliptical cone, the long axis of which is parallel to the track. In another version, the ratio ((2r/P1)×100) of the diameter 2r to the spacing P1 is 127% or higher, where P1 is the spacing between structural elements on the same track, and 2r is the diameter of the lower surface of the structural element in the direction of the track. The method is carried out by forming a resist layer on the peripheral surface of a columnar or cylindrical standard mould, forming latent images via interrupted irradiation of the resist layer with a laser beam while rotating the standard mould with relative displacement of the laser beam spot parallel to its central axis, forming a resist structure via development thereof and forming structural elements by etching using the resist structure as a mask. |
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Multielement terahertz radiation generator Multielement terahertz radiation generator includes test sample, femtosecond laser, multielement emitter where element emitter is made in the form of crystal semiconductor with sputtered metal mask forming sharp laser illumination gradient for crystal semiconductor layer. On the boundary of illuminated and shaded parts of semiconductor layer, a sharp gradient of photoexcited charge carrier concentration is formed parallel to the semiconductor surface. In addition the device includes elliptical mirror forming a focused terahertz radiation beam, while multielement emitter includes a raster of cylindrical microlenses distributing laser radiation between element emitters and illuminating only those semiconductor layer areas involved in terahertz radiation generation. The metal mask is made in the form of flat metal stripes. |
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System can be used in investigating properties of gaseous media, including with chemical reactions, in small volumes by scattering spectroscopy or light absorption. The system includes assemblies of optical elements capable of moving towards a focal point, each having two flat swivel mirrors in an adjustment head which provides independent inclination of each mirror in two directions, or a lens in between, which is mounted at double the focal distance on the beam path from the measuring volume. The assemblies enable to focus a reflected beam at the same point. One assembly, having a lens and a flat mirror or only a concave mirror, directs the laser beam such that it travels its entire path in the reverse direction, wherein the number of passages is equal to or greater than 4 depending on the number of installed assemblies of optical elements. |
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Laser pointer has a laser pointing channel, electronic equipment for controlling laser power (energy) of the laser pointing channel and a laser range-finding channel. The laser pointing and range-finding channels are designed such that the axes of laser beams are parallel to each other. The output of the laser range-finding channel is connected to the input of the electronic equipment for controlling laser power (energy) of the laser pointing channel. The output of the electronic equipment for controlling laser power (energy) of the laser pointing channel is connected to the input of the laser pointing channel. |
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Method of controlling optical signal modulation in liquid crystal device Method of controlling optical response of a liquid crystal device includes applying ac voltage with a rectangular signal of a different frequency across the liquid crystal device, wherein the polarity of the potential at the electrodes does not change as a result of using a unipolar square waveform. To control optical signal switching, the liquid crystal devices employ direct current pulses and ac voltage with a sinusoidal and rectangular pulse of a different frequency. |
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Group of inventions refers to medicine. A system represents a lens or a set of lenses, wherein the lens has: central optical zone with distribution of ADD power varying from the maximum falling within 0 to 2.4 dioptres to the minimum making 0 to 0.2 dioptres; a peripheral optical zone having the distribution of power providing a negative spherical aberration between an internal semi-diameter of 2 mm and an external semi-diameter of 3 mm; a transient zone between the central and peripheral optical zones adjoining thereto and providing a transition in between. A difference of the negative spherical aberration on the internal semi-diameter of the peripheral optical zone and the negative spherical aberration on the external semi-diameter of the peripheral optical zone is within the range from the absolute minimum of approximately 0.65 dioptres to the absolute maximum of approximately 1.25 dioptres. The distribution of power in the transient zone is continuous. A proper member representing a continuous displacement is included into the specified distribution of power for each lens from the set so that the distribution of power is identical for all the lenses from the set except when the members representing the continuous displacement are different for all the lenses. |
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Apparatus for simultaneous transmission of signals in optical and radio-frequency ranges Apparatus has a dielectric waveguide in form of a hollow cylinder with openings in the wall for inlet of fibre-optic links lying at a distance δ from each other. Leads of the fibre-optic links are placed in a cylinder bushing made of waveguide material. The bushing is tightly fit into the cavity of the waveguide and protrudes from the waveguide by a distance h. An optical lens is placed coaxially opposite the bushing. The distances δ and h are selected to be comparable with the given wavelength λ of radio-frequency radiation. To ensure coaxiality of the fibre-optic link and the optical axis of the lens, the waveguide is placed such that coaxiality can be adjusted. To protect information radio-wave radiation from spurious reflection, the waveguide is placed in a pipe made of porous dielectric material with low permittivity. |
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Converter has a working semiconductor layer which is sensitive to femtosecond laser pulses while providing near-surface flashes of photoelectric current, which result in broadband terahertz radiation on a scheme for transmission of laser pulses with absorption by said working semiconductor layer, and a hyper-hemispherical terahertz lens placed at the output of the generated terahertz radiation, as well as means of screening propagation of the generated terahertz radiation in directions opposite the laser beam. The screening means is a screen made of material which is transparent to the laser beam and reflects the generated terahertz radiation, and is placed on the side of action of the laser beam while allowing the latter to pass through said screen. |
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Invention relates to electronics and specifically to electrooptical devices based on liquid crystals for controlling polarisation properties and intensity of light flux, and for displaying and processing information. A high-speed liquid crystal modulator based on a chiral liquid crystal further includes at least two compensating phase plates - with anomalous and normal dispersion of birefringence, which enables to eliminate dispersion of light polarisation states which is typical for chiral liquid crystals and expand the spectral range of high-contrast light modulation across the entire visible spectrum. |
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Magnetooptic material is an epitaxial monocrystalline film of iron garnet of the composition (YBi)3(FeGa)5O12, which is grown on a substrate of nonmagnetic garnet with a high lattice constant a = 12,380 A o / − 12,560 A o / . The epitaxial film contains 0.1-0.4 formula units of Mg2+ ions. The substrate of nonmagnetic garnet can be made from (GdCa)3(GaMgZr)5O12, or Ca3(NbLi)2Ga3O12, or Ca3(NbMg)2Ga3O12, or Ca3(NbZr)2Ga3O12. The disclosed material has a magnetooptic figure of merit of 56-60 deg/dB at λ=0.8 mcm, 350-380 deg/dB at λ=1.3 mcm, coercitive force of about 2.5-15.3 Oe. |
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Method of obtaining polycrystalline optical material based on oxides Initial raw material in the form of a briquette of a powder of aluminium-magnesium spinel with stoichiometric composition, alloyed with 1 wt % of lithium fluoride is sintered in vacuum at a temperature of 1100-1500°C. The obtained briquette with a diameter equal to the diameter of the mould is loaded into the mould, with its further compression at a temperature of 1550-1600°C for 5-30 minutes under pressure of 350-500 kg/cm2, kept for 30-55 minutes and cooled. |
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Coating for space mirror workpiece Disclosed is a coating for a space mirror workpiece, which is glass of the following composition, wt %: SiO2 - 44-61; B2O3 - 8-20; Al2O3 - 5-19; CaO - 3-12; Sb2O3 - 0,3-0,7; V2O5 - 2-11; Nb2O5 - 1-7; MoO3 - 0.2-4 and F - 1.5-6. |
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System and method for enhanced predictive autofocusing Invention relates to predictive autofocusing. Provided is a method for autofocusing in an imaging device having an objective lens and a stage for holding a sample to be imaged. The method includes determining a measured focal distance corresponding to at least a first of a plurality of logical image segments. The method also includes imaging the first logical image segment using the measured focal distance. The method also includes determining a predicted focal distance for a second of the plurality of logical image segments using the measured focal distance and a stored focal distance variation parameter. In addition, the method includes imaging the second logical image segment using the predicted focal distance. |
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Invention relates to lighting engineering. A lamp (100) contains at least one light-generating element (2), a partially transparent lampshade (5) placed around the light-generating element (2) over the angle of at least 180°, but 360° is more preferable, at least one liquid crystal screen (10) placed between the light-generating element and the lampshade, and a controller (20) to control the liquid crystal screen so that it has sections of mutually variable light transmission in the range of 0% and 100% so that an image is displayed. In the horizontal cross-section the liquid crystal display is continued in two dimensions with its concave side faced to the light-generating element. The liquid crystal screen should be flexible preferably so that it may be bended and shaped cylindrically around the light-generating element. |
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Ear arm for glasses and glasses containing thereof Invention relates to glasses, namely to an ear arm for glasses. The ear arm for glasses contains an elongated element, which has the back end, made with a possibility of placement on a user's ear, and the front end, made with a possibility of connection to the glasses frame. The front end of the elongated element is made with a possibility of elongation by means of one or several additional elements due to application of at least one longitudinal bar, inserted into a longitudinal slot, made in the front end of the elongated element. One or several transverse elements are inserted into transverse holes, made in one or several additional elements, in the longitudinal bar and in a longitudinal overlay, located on the lateral side of the additional elements. One or several transverse elements are inserted into the transverse holes, made in the front end of the elongated element, in the longitudinal bar and in the longitudinal overlay. A hinge element is made in one piece with the longitudinal bar. The ear arm also contains one or several graphic symbols, in particular a letter-digital symbol, fixed on the lateral side of one or several additional elements. |
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Reflecting autocollimating spectrometer Spectrometer consists of an entrance slit lying in the focal plane of a lens and shifted in the meridian plane relative to its optical axis, the lens and a dispersing device. The lens consists of a first concave mirror with a positive optical power, whose concave surfaces faces the entrance slit, a second convex mirror with a negative optical power, lying between the entrance slit and the first mirror and facing the first mirror with its convex surface, a third concave mirror with a positive optical power, lying behind the second mirror and facing the entrance slit with its concave surface. The dispersing device includes a dispersing element and a flat mirror lying at an angle of 80…90° to incident beams. Optical surfaces of at least two mirrors are aspherical. Centres of curvature of all mirrors lie on the optical axis of the lens. The first and second mirrors are off-axis mirror fragments. The third mirror lies on the optical axis. The dispersing element is a prism with an angle of refraction of 5…30°, made of material with a refraction index of 1.4…1.7 and a dispersion coefficient for line e of 20…70. The flat mirror is in form of a reflecting coating on the second face of the prism in the direction of the beam. |
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Display device and method of its manufacturing Display device contains a sealing element (40) in the form of a frame containing inner materials of the sealing element that include at least either fibreglass materials (42) or conductive balls (43) placed between the first substrate (30) and the second substrate (20) at the section of it outer perimeter. At the first substrate (30) there is a salient angle (36) at the intermediate section in direction of the sealing element (40) width, which is continued along the sealing element (40) and protruded towards the second substrate (20) with a gap between the salient angle (36) and the second substrate (20). Density of inner materials distribution in the sealing element in the area (SL2) corresponding to the salient angle (36) is lower than in the area (SL1) located furtherer from the substrate centre then the salient angle (36), or inner materials of the sealing element are not contained in the sealing element (40) in the area (SL2) corresponding to the salient angle (36). |
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Passive optical shutter has a reflecting metal film on a substrate, placed in the intermediate real image plane of the optical system of a radiation detector. The film has an underlayer of a thermal decomposing chemical compound with emission of gases. |
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Catadioptric lens consists of, on the beam path, a plane-convex lens whose convex surface faces the object plane, the centre of the plane surface of which is coated with a mirror coating, a Mangin mirror whose concave surface faces the object plane, at the centre of which there is an opening, and a positive glued meniscus whose convex surface faces the object plane. The plane-convex lens and the Mangin mirror are made of the same material, the average dispersion of which is in the range 63≥υD≥66. The distance from the first lens to the glued meniscus is in the range from 0.35×f' to 0.45×f', where: υD is the average dispersion (Abbe number) for the D spectral line, and f' is the focal distance of the lens. |
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Illumination system and liquid crystal display device using said system Invention relates to lighting engineering. The illumination system comprises a light-emitting part (1), having light sources configured to emit light beams at different dominant wavelengths, and an image-forming optical system (3), having microlenses (3a) configured to focus the light beams emitted by the light-emitting part (1). The illumination system is configured to illuminate a liquid crystal panel with light beams passing through the image-forming optical system (3). The liquid crystal panel has pixels which are spaced apart by a predetermined spacing and each of which has display elements corresponding to each separate colour, and under the condition that the spacing of the pixels is denoted by P, and the image-forming optical system has a zoom factor (1/n), the light sources are spaced apart by a spacing P1, given as P1=n × P, and the microlenses are spaced apart by a spacing P2, given as P2=(n/(n+1)) × P. |
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Polarising film and method of obtaining it Polarising film consists of oriented molecules of a block copolymer of polyvinyl alcohol and polyvinylene, obtained by acid-catalysed thermal dehydration of oriented molecules of polyvinyl alcohol, and additionally contains phosphotungstic acid. A method of production consists in formation of a film of polyvinyl alcohol from a water solution of polyvinyl alcohol and an acid catalyst of thermal dehydration of the said polymer, uniaxial stretching and annealing the said film. As the acid catalyst used is phosphotungstic acid in an amount of 10-30% relative to the polyvinyl alcohol weight. The film is stretched 4-7-fold relative to its initial length and annealed at a temperature of 120-140°C for 1-15 min. |
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Weight-compensated mobile suspension for focusing lens of laser device Invention relates to optics. The weight-compensated mobile suspension of a focusing lens (12) of a laser system (10) comprises: a force generator for generating a force (G) which balances the weight of the focusing lens (12), a transmission mechanism which enables to apply a counteracting force (G) to the focusing lens (12) and enables compensating movement of the focusing lens upwards/downwards. The suspension also includes a device which guides movement of the focusing lens such that during compensating movement of the focusing lens (12) upwards/downwards, its optical axis (O) maintains at least its orientation and, preferably, its position in space. |
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Stereoscopic image generator, method for stereoscopic image generator, and programme Invention refers to a stereoscopic image generator. A unit 311 for an image projection on the surface of a horopter aims at a non-stereoscopic image projection through a signal line 129 on a cylindrical surface (the horopter) comprising the horopter circumference. The horopter circumference is specified, e.g. with the use of a radius as the horopter circumference data. Besides, the relation of two eyes is specified as an eye distance. A unit 316 for projection on a display surface for the right eye is used for projection of the image projected on the horopter, on the display surface of the right eye. A unit 317 for projection on the display surface for the left eye is used for projection of the image projected on the horopter, on the display surface of the left eye. For this reason, the identical images on the retina are supplied to both eyes to eliminate the effect of physiological stereoscopic elements and to produce a stereoscopic depth. |
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Absorbers of uv/visible light for materials of ophthalmological lenses Described are novel derivatives of benzotriazole of general formula , where X is C3-C4 alkenylene, C3-C4 alkylene, CH2CH2CH2SCH2CH2 or CH2CH2CH2SCH2CH2CH2; Y is hydrogen, if X is C3-C4 alkenylene, or Y is -O-C(=O)-C(R1)=CH2, if X is C3-C4 alkylene, CH2CH2CH2SCH2CH2 or CH2CH2CH2SCH2CH2CH2; R1is CH3 or CH2CH3; R2 is C1-C4 alkyl, and R3is F, Cl, Br, I or CF3. |
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Liquid crystal display device display defect correction method Display device has an active matrix substrate, having a plurality of scanning lines which run in a row direction, a plurality of signal lines (13) which run in a column direction and a signal line control circuit which applies voltage as a display signal on each of the signal lines. The plurality of signal lines include a first type of signal line (13a) which does not cross another signal line, and a second type of signal line (13b) which crosses an adjacent signal line on an insulating film outside the display region. The active matrix substrate further includes a correction line (40) which is electrically separated from the plurality of signal lines and has a floating potential in the vicinity of the region (IR) of intersection, where the second type of signal line crosses an adjacent signal line. |
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Optical system for projection type on-board display Optical system has a concave spherical beam-splitting mirror with curvature radius R, a flat beam-splitting mirror mounted with inclination to the optical axis, a spherical diffusing screen, a projection lens, a liquid crystal display and a condenser. The projection lens consists of two components and an aperture diaphragm (AD). The first component is a single negative meniscus whose convex side faces a diffusion screen with curvature radius R/2. The second component is made of a negative glued lens and a double-lens positive element comprising a biconcave and a biconvex lens. The AD is placed between the first and second components in the front focus of the second component into which the positive glued lens is directed, said positive glued lens being placed between the AD and the negative glued lens, and a positive meniscus lens, whose concave side faces the spherical diffusion screen. Optical power values of the lenses satisfy conditions given in the claim. |
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Interference scanner in form of fabry-perot dual-mirror interferometer Interference scanner contains substrates with mirror coating which position can be regulated by a piezoelectric element connected to the source of alternating current. Surfaces of the mirror substrates in the interferometer are interconnected by a transparent resilient continuous or discontinuous layer of even thickness thus forming a mechanical oscillator with free frequency close to the alternating voltage frequency. Young modulus of the resilient layer is less then the same value of substrates. Any substrate can be used as a piezoelectric element. Semi-hard, soft and elastic polymers, including polyamide, polyethylene, photoresist material, silicone rubber, can be used as a material for the transparent resilient layer. Optical thickness of the resilient layer is equal to half of full wave of the modulated emission. Thickness values of the oscillator components are much less than the length of elastic wave in it. In the oscillator thickness an integer number of elastic half-waves can be managed while in the substrate thickness an odd number of the elastic wave quarters can be managed. |
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Invention relates to means of displaying on liquid crystals. The electroconductive optical device has a base element and a transparent electroconductive film formed on the base element. The structure of the surface of the transparent electroconductive film includes a plurality of bulging portions with antireflection properties and arranged with spacing equal to or less than the wavelength of visible light. |
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Plan apochromatic objective lens Objective lens has two components separated by an aperture diaphragm. The first component consists of a positive meniscus whose concave side faces the image space, and a glued meniscus whose concave side faces the image space, between which there is a negative meniscus whose concave side faces the image space. The glued meniscus whose concave side faces the image space is positive and consists of a biconvex and a biconcave lens. The second component comprises a biconcave lens and two biconvex lenses. The biconcave lens and the first biconvex lens are glued. A negative meniscus whose concave side faces the object space is further placed behind the second biconvex lens. |
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Device for positioning the object comprises the means for angular orientation, consisting of the fixed and movable parts, and the means for vertical supplying, connected to the movable part of the means of angular orientation. The means for angular orientation provides the angular orientation of the object relative to two intersecting mutually perpendicular horizontal axes and can be made in the form of a spherical hinge. The means of vertical supplying provides the movement of the object relative to the movable part of the means of angular orientation along the vertical axis and can be made in the form of a linear electric motor or piezo-drive actuator. |
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Apparatus for modulating monochromatic optical radiation Invention relates to optical engineering. The apparatus for modulating monochromatic optical radiation comprises an optically transparent medium in which are mounted a splitter for splitting monochromatic optical radiation into a first and a second propagation channel, a reflecting element in the second channel, a coherent summation portion for forming modulated monochromatic optical radiation. The splitter used for splitting monochromatic optical radiation into a first channel and a second channel is a splitting cube consisting of two identical triangular prisms joined by their large faces. The first channel is equipped with its own reflecting element. Each reflecting element is deposited on the corresponding face of the splitting cube on the path of the monochromatic optical radiation in the first and second channels. The splitting cube is mounted such that it can move back and forth outside the interface plane of its prisms, and the angle α between the velocity vector of the back and forth movement and the interface plane of the prisms of the splitting cube is selected from the relationship , where fm is the required modulation frequency of the monochromatic optical radiation, λ0 is the wavelength of monochromatic optical radiation at the input of the splitting cube, υ is the velocity of the splitting cube. |
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Tunable fabry-perot interferometer Interferometer has a housing in form of two flanges placed perpendicular to the optical axis with axial through-openings, and a two-mirror resonator placed in the openings of the flanges, each mirror being mounted on the corresponding flange by a piezoelectric element. The flanges are connected to each other by a fastening assembly. Leads of the piezoelectric element are connected to the input of a control unit and the output of a generator. The output of the control unit is connected to the control input of the generator. The mirrors are attached to the end faces of the piezoelectric elements such that a plane-parallel plate can be placed between peripheral areas of the mirrors which do not participate in multiple reflection of light, the width of said plate lying in the range of variation of the gap between the mirrors, provided by the working stroke of the piezoelectric elements. |
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Method of limiting intensity of laser radiation In the method of limiting intensity of laser radiation, which involves feeding laser radiation flux to the input of a device which limits laser radiation power, the laser radiation flux is fed by successively transmitting the laser radiation flux through a first stage mounted at the input of an optical system in the focal plane of two interfaced lenses, and then through a second stage. The first stage is characterised by variable transmission factor of laser radiation, which is a function of intensity of the laser radiation flux, and includes a laser radiation transmitting cell which is in form of a glass cuvette filled at pressure of not more than 5 atm with an inert gas, e.g. xenon, which does not have absorption bands in the operating spectral region. The second stage is a nonlinear limiter and includes an element which limits laser radiation power, which is in form of an optically transparent matrix, e.g. a polymer film or a glass plate, with embedded nano-dispersed carbon-containing filler. After the second stage, the laser radiation flux is directed into a light sensor which detects the value of the converted laser radiation flux. |
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Invention relates to collimator lenses, operating in medium IR-range of wavelengths (for spectral range from 3 to 5 mcm) and may be used in thermal imaging collimators or in receiving thermal imaging lenses (in return flow of beams) in different devices. The collimator lens comprises three components, besides, the first component along the travel of the beams is made in the form of a mirror, facing with a bulge to the plane of objects, the second component is made in the form of a single negative meniscus lens with a hole in the centre, facing with a bulge towards the plane of objects, besides, its concave surface has a mirror inner coating and it is arranged between the first component and the plane of objects, and the third meniscus lens facing with a bulge to the image and arranged between the first component and the image, the second and third components are made of zinc selenide, and in the first component the mirror coating is applied onto the convex surface of the mirror. Besides, the radius of the spherical optical reflecting surface of the mirror of the first component by modulus is equal to the radius of the convex surface of the third component. |
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Paired optically variable protective element with characteristic reflected radiation wavelengths Proposed element comprises first and second optically variable element including the first and second optically variable thin-film laminar interference devices. Note here that said the first and second optically variable thin-film laminar interference devices are located so that they can be viewed together. The band covered by second device 3rd and 4th lengths waves lies in the band covered by first device 1st and 2nd lengths waves. This allows determination of definite light incidence angle whereat peaks of k-order of reflection of said 1st and 2nd interference coincide. Said 1st and 2nd optically variable interference devices feature identical interference structures so that they display true spectral matching at said preset light incidence angle while at other angles they feature different spectra. |
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Mechanical q-switch (quality switch) for pulse lasers with commutator function Mechanical Q-switch (quality switch) for pulse lasers with a commutator function is a device with an optical-mechanical unit, a power supply unit and a processor control unit and a prefabricated prism which is installed on the rotating rotor of an electric motor; the prism consists of two rectangular prisms Ap90 fixed by their hypotenuse edges at the tiled edges of the rhomb-prism with a gap between edges. The device ensures Q-factor of the pulse laser circuit at the moment of radiation in two directions due to applied semitransparent coatings at cathetus edges of the prisms Ap90 fixed at the rhomb-prism with a nontransmitting mirror included into the laser design; at the moment of radiation the laser does not generate flare to sensors receiving the echo signal from each of two potential directions, it is ensured by a rotary shutter fixed at the rotor of the electric motor, which covers the sensors at the moment of the laser radiation and passes the received echo signal to the receiving sensors due to two cuts made in its edge. |
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Luminance field scanning method and photooptic system for realising said method Luminance field scanning method includes receiving radiation of an object using a photooptic system with a two-dimensional matrix receiver, converting the radiation to electrical signals, storing signals from elements of the two-dimensional matrix receiver, reading said signals and processing. When receiving radiation of the object using a photooptic system while rotating the two-dimensional matrix receiver, the image of the luminance field is rotated at the frequency and in the direction of rotation of the two-dimensional matrix receiver. The luminance field scanning method is carried out using a photooptic system which comprises series-connected objective lens, which includes an entrance window, a main mirror and a correction lens mounted on the beam path, a two-dimensional matrix receiver mounted in the focal plane of the objective lens and a unit for processing signals from the two-dimensional matrix receiver. A prism with a rotary drive is mounted in the objective lens between the main mirror and the correction lens, wherein the output of the rotary drive is connected to the second input of the prism. A unit for shifting the signal to half the frequency of the two-dimensional matrix receiver is connected between an additional sensor for the rotational angle of the two-dimensional matrix receiver and the rotary drive. |
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Substrate of active matrix and liquid-crystal display device Active matrix substrate includes a variety of pixel electrodes placed in the matrix and a source interconnection stretched in the direction of the leg. The source interconnection has the first lateral section stretched along one side in the leg direction of at least one pixel electrode out of the variety of pixel electrodes crossing the section that crosses the pixel electrode and the second lateral section stretched along the other side in the direction of the pixel electrode leg. The first and second lateral sections are interconnected by means of a big crossing section, and at least one crossing section is provided at each of two pixel electrodes adjusted in the leg direction out of the variety of pixel electrodes. |
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Lighting device, display device and television receiver Invention relates to the field of lighting equipment. A highlighting unit 12 consists of a LED 17, a chassis 14 including a base plate 14a mounted at the side opposite to the side of the light output in regard to the LED 17, at that the chassis 14 contains the LED 17 and the first reflective sheet 22 that reflects light. The first reflective sheet 22 includes a four-sided base 24 running along the base plate 14a and two elevated portions 25 and 26, each of these portions is elevated from each of two adjacent sides of the base 24 in direction of the light output. There is a junction J between two adjacent side edges 25a and 26b of the elevated portions 25 and 26. In the highlighting unit 12 the side edge 25a of the first elevated portion 25 out of the two elevated portions 25 and 26 has a face piece 28 faced to the side edge 26a of the elevated portion 26 in the same direction in which the first elevated part 25 is elevated from the base 24 outside towards axis Y, and the first elevated part 25 and the face piece 28 are extruded towards direction of the light output. |
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Dichroic cut-off filter for obtaining images Device for obtaining a wide-angle image comprises an optical system and a wide-angle dichroic cut-off filter situated near the surface of the lens in the optical system. The lens receives principal light rays essentially at the same angle of incidence on its surface. A device for reducing glare in the image former comprises an absorption ultraviolet (UV) cut-off filter and a dichroic infrared cut-off filter, situated on the lens in the optical system, which receives reflected light from the surface in the optical system at an angle of incidence which is greater than the angle of incidence of light from the object falling on the dichroic infrared cut-off filter. In another version, the device comprises an absorption infrared cut-off filter and a dichroic UV cut-off filter, situated on the lens in the optical system, which receives reflected light from the surface in the optical system, at an angle of incidence which is less than the angle of incidence of light from the imaged object, falling on the dichroic UV cut-off filter. |
Another patent 2513693.