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Telescopic sight includes a common eyepiece and two parallel-arranged optical channels with different magnification, each having on the beam path a lens, a grid and an erecting system. The common eyepiece is placed on the axis of the channel with lower magnification. Lenses of both channels have the same focal distance, in the common focal plane of which the grids are placed. The channel with higher magnification is further provided with an optical element which is placed in front of the focal plane and is configured to shift the axis of the optical channel with higher magnification. |
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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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Optical module having multifocal optical system for covering far range and near range in one image Optical module has a semiconductor element (4) with a surface which is sensitive to electromagnetic radiation and an objective lens (1) for projecting electromagnetic radiation onto the sensitive surface of the semiconductor element (4). An additional optical element (11) is placed in the space between the objective lens (1) and the sensitive surface of the semiconductor element (4). The objective lens (1) is positioned in such a manner and the thickness of the additional optical element (11) is such that an optical far range (8) is imaged by the additional optical element (11) in a first region of the sensitive surface of the semiconductor element (4) and an optical near range (9) is imaged in a second region of the visual field in which the additional optical element (11) is not located. In a vehicle, the optical module is placed in inside behind the windscreen (5) to record the outer space in the direction of movement. |
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Method of forming images of different fields of view Method involves simultaneous formation of two fields of view with coaxially arranged objective lens for forming a first field of view and a double-mirror system for forming a second field of view. The double-mirror system 10 is placed in front of the narrow-angle objective lens 30 on its axis of view, said double-mirror system having two oppositely directed convex mirrors 11 and 12 with openings and a light filter 20 for aligning light flux behind said mirrors. The two convex mirrors 11 and 12, together with the narrow-angle objective lens 30, form a peripheral, second field of view which is an annular zone 13 in the focal plane, said zone tightly adjoining the image of a narrow field of view 14, wherein both images of the narrow field and the annular zone are projected on one photodetector array 40. |
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Telescope has in a first channel a main mirror, a secondary mirror, a lens corrector, a recording device mounted in the focal plane of the telescope, and in a second channel a flat slanted elliptical mirror for observing stars, which is mounted in the plane of intersection of the first and second channels. The central part of the surface of the main mirror which faces the secondary mirror and on which light from the Earth falls is coated with a green reflecting light filter. In the central area of the cross-section of the second channel there is a circular diaphragm which prevents that part of light from stars which does not fall on the flat slanted elliptical mirror from falling into the first channel. The part of the surface of the recording device facing the lens corrector is coated with a red transmitting light filter. |
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Sight has an objective lens, a collecting lens, a plane-parallel plate with a pointing mark and scales, an erecting system, a field stop and an ocular. In the objective lens, aberrations are corrected within an angular field equal to the sum of the greatest value of the angular field of the sight and the greatest value of change of the direction of the axis of sight. The plane-parallel plate is placed in the plane of a first or, in the second version, a second intermediate image. Components of the erecting system and, in the first version, the plane-parallel plate are differentially moved so as to provide displacement of the main points of components of the erecting system and, in the first version, vertices of the aiming mark in a direction perpendicular to the optical axis. The displacement values are proportional to distance from the axial point of the second plane of the real image to the corresponding displaced components. |
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Sight has, arranged in series on a beam path, a three-element objective lens, an aiming reticle, a two-component pancratic system, an ocular consisting of a plane-concave lens, a single positive meniscus and a negative meniscus and a biconvex lens glued together, a mechanism for moving the reticle, which enables to separately make height and lateral direction adjustments. The objective lens consists of two menisci glued together - a positive meniscus whose concave surface faces the object and a negative meniscus, and a third biconvex lens. The dispersion coefficient vc of the first and third lenses satisfies the condition 50<vc<70, which is 2-2.5 times greater than the dispersion coefficient of material of the second element of the lens. The following relationships are satisfied: fgl=(5-6) f'ob, f'1=(1.2-1.4)f'ob, f'2=(1-1.5)f'ob, f'3=(1-1.5) f'ob, where f'gl, f'ob, f'1, f'2, f'3 are the focal distances of the glued lens, the objective lens, the first positive meniscus, the second negative meniscus and the third biconvex lens. The aiming reticle is in form of three thin sharp metal strips, and the twilight factor varies from 10.8 to 18.7. |
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Sighting device designed to operate with two open eyes Sighting device has a unit which provides parallel displacement of the optical axis which is part of the sighting device of one of the following devices: Kepler telescopic system, a night vision device, a thermal imager or eyes of a user such that, in the aiming direction, at least part of the output optical surface of the unit lies outside the region of shielding at least part of the aiming object space with components of the sighting device. In the sighting device according to the first version, an eyepiece of said system or a component thereof is placed between optical components of said unit. The sighting device according to the second version includes an optical element with transmission and/or reflection which depends on distance from the optical axis, which provides, while approaching the periphery of field of view, gradual "extinction" on brightness of a magnified image and "increase" for an unmagnified image. The sighting device according to the third version includes an adjustment mechanism located at the input of the node and on which beams from a target fall, the adjustment mechanism being configured for angular displacement of the image constructed by beams bypassing the device, for matching the angular position of optical axes of the sighting device and the non-dominant eye of the user. |
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Telescopic sight has series-arranged lens, first grid, erecting system consisting of a first and a second positive component, each glued from two lenses, and an eyepiece, as well as a beam splitting cube, whose beam splitting plane is in form of a diagonal face, three mirrors and a third positive component glued from two lenses. The first plane mirror, parallel to the beam splitting face of the cube, lies on the same axis with the third positive component; the second mirror is perpendicular to the first mirror in front of the focal plane of the eyepiece and the third mirror, which is inclined to the optical axis and faces the eyepiece by its reflecting surface, lies between the focal plane of the eyepiece and the second component of the erecting system. The front face of the beam splitting cube facing the lens and on which the first grid is deposited, lies in the focal plane of the lens and a second illuminated grid which is optically interfaced with the first grid is glued to its lower face. The third positive component is glued to the upper face of the cube. On an axis between the first and second mirrors, there is a fourth positive component glued from two lenses. In a second version, the second illuminated grid is glued to the upper face of the cube and the third positive component is glued to the lower face of the cube. |
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Method involves determining and establishing initial dimensions of the field of view of a viewing device, superimposing said field with an object and holding in that position for a given period of time. The position of the optical axis of the viewing device is brought into the field of view of the viewing device; a stabilised line of sight is formed and adjusted in the initial state with the optical axis of the viewing device. The direction and magnitude of the angular velocity of deviation from the optical axis of the viewing device of the stabilised line of sight is determined; the stabilised line of sight is moved at the same speed in the opposite direction and superimposed with viewing point on the viewed object. As the viewing device manoeuvres, the its turning angle about its optical axis and the elevation angle of the stabilised line of sight are measured; the deviation angle of the line of sight from the given position is determined and the line of sight is moved in the opposite direction by the same angle to the given position; a viewing index is illuminated; brightness and colour of its illumination are gradually changed until optimum contrast with the viewed object is achieved; the field of view is reduced to a size defined using a mathematical formula. After a time tg+td, where tg is the given viewing time, td is the time delay of the eye-viewing device system, the initial dimensions of the field of view of the viewing device are restored. |
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Sight has a series-arranged two-component lens whose components are positive lenses glued from two lenses, a grid, a two-component erecting system, between the components of which, in form of positive lenses glued from two lenses, there is a beam splitting cube, an additional positive component glued from two lenses and lying over the cube, three flat mirrors and an eyepiece. The beam splitting cube, the additional positive component and the three flat mirrors form a second channel through which the shooter can see a magnified image of the target on the lower part of the field of view. The objective lens includes two glued lenses, the first of which is positive and the second is negative and movable along an axis. The aperture diaphragm is located on the first surface of the third lens of the objective lens. The first glued positive lens of the objective lens consists of a positive lens and a negative lens. The second glued negative lens of the objective lens consists of a negative lens and a positive meniscus. Refraction indices of the first and second lenses of the first and second components of the objective lens are pairwise identical. The distance between the glued lenses of the objective lens and the grid and the focal distances of the lenses of the objective lens correspond to expressions given in the claim. |
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Open sight has a range finder with a receiving channel, a sighting channel, an input lens which is common for the receiving channel of the range finder and the sighting channel, a spectrum divider which splits the laser and the sighting light flux, and a reference mark with illumination. The spectrum divider is in form of spectrum dividing prism on one face of which there is a field stop of the receiving channel of the range finder and a reference mark, and a spherical mirror is glued to the other face. The radius of the spherical mirror and its position on the prism are such that there is optical interfacing of the field stop and the reference mark. |
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Method of checking parallelism of sight axes of multispectral systems Method involves formation of collimated light flux from a reference mark, direction of said flux into optical channels of the electro-optical modules of the system using reflecting optical elements and formation of an aiming mark where the image of the reference mark is located. The reference mark used is the field diaphragm of the receiving module of a laser range-finder. The reference mark is illuminated with a wide-spectrum light source. The image of the diaphragm is transmitted using the mirror lens of the receiving module of the laser range-finder, trippel-prisms and input lenses the electro-optical modules of the system into their focal planes. In each module, coordinates of the centre of the image of the diaphragm are determined and electronic aiming marks are formed in accordance with the obtained coordinates. |
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Device for displaying visual information on vehicle windscreen Device has an image source, a mirror which receives light from the image source, and a concave aspherical mirror which direct light onto the windscreen. The mirror which receives light from the image source is convex aspherical. A concave aspherical mirror can also be placed between the mirror which receives light from the image source and the mirror which directs light onto the windscreen. |
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Sight with variable magnification Sight comprises objective, collective positive lens with grid applied onto its flat surface, pancratic turning system comprising two positive components and ocular. Objective is made of positive convexo-convex lens and negative meniscus arranged at d distance from it and inverted with its concavity to positive lens. Mirror coat is applied on central part of convex surface of negative meniscus. Behind negative meniscus there is a spherical mirror with opening in central part at distance D from objective. Spherical mirror is inverted with its concavity to negative meniscus of objective, and D>10d. Behind mirror there is negative concavo-concave lens introduced, being glued of positive meniscus and concavo-concave negative lens. |
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Sight comprises the following serially installed components: objective, mesh, two-component turning system and ocular. Additionally beam-splitter cube, three mirrors and positive components are introduced. Beam-splitter cube is installed between components of turning system, its beam-splitter plane is arranged in the form of diagonal facet, lower part of which is located closer to objective. On top above the cube there is an additional positive component glued of two lenses, above which the following components are installed: the first flat mirror parallel to beam-splitter cube facet, then the second flat mirror installed perpendicularly to the first mirror in front of focal plane of ocular, and the third mirror inclined to optical axis and inverted with their reflecting surface to ocular and installed between focal plane of ocular and the second component of turning system. |
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Sight comprises the following components along with direction of rays - objective, collective lens, turning system, the first mesh containing nontransparent dashes on transparent background and installed in ocular focus, ocular and the second mesh. Additionally beam-splitter cube is introduced, which is installed between the first mesh and ocular, beam splitter plane of which is inverted to the first mesh with its first end, and with its second end - to ocular, and three light diodes installed above the second mesh. The second mesh containing transparent dashes on nontransparent background is installed parallel to sight axis and cathetus facet of cube, which produced cube rib together with the first end of beam-splitter plane. Collective lens is installed in front of focal plane of objective. |
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Invention is intended for observation of narrow biological channels and remote cavities of a human body. The optical system of an endoscope contains objective, optical transferring system, light guide used for illumination. In addition transferring chamber, communication channel, television receiver, collimator are entered into system. The objective end is bridged to an input of transferring system, the end of transferring system is bridged to an ocular input, the ocular end is bridged to an input of the transferring chamber, the end of the transferring chamber is bridged to a communication channel input, the communication channel end is bridged to an input of the television receiver, the end of the television receiver is bridged to a collimator input. |
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The optical sight for small arms has a device for radiation of the laying mark, laying mark control device, device for correction of the laying mark, optical collimator unit and a power supply source with a switch. The device for radiation of the laying mark is made in the form of an electronic matrix with radiating elements. The laying mark control device is made in the form of a microcontroller with a decoder. The device for correction of the laying mark is made in the form of a microswitch. |
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Instrument for daytime and night observation and aiming The instrument has a front-view mirror with a system of stabilization and aiming of the sighting line optically linked with the sight channel, which includes an optical module including the daytime and night channels. The instrument has also a radiator unit, scanning unit, photodetector unit, the output of the photodetector unit is connected to the input of the analog-to-digital converter, whose output is connected to the control electronics unit. |
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Optical targeting device for day and night observation consists of collimator system in form of two-les glued objective, made in form of negative and positive quasi-focal meniscuses, directed by concave surfaces to one another, light-splitting cube, positioned behind second positive meniscus, and light source, positioned outside optical axis. On concave surface of first from object negative meniscus, interferential spectrum-splitting cover is positioned. Light-splitting cube is glued together of two same prisms with interferential spectrum-splitting cover on glued hypotenuse side of one of prisms. One of leg sides of first prism along beams way is perpendicular to optical axis and directed towards objective, and close to second side light source is positioned. Relations displayed in formula of the invention are fulfilled by described device. |
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Adjustment of viewfinder axis direction is performed in television cameras synchronized by frequency and phase, and is performed by means of reflective and electronic "meshed field" tables, parameters of which consider base distance along horizontal line between geometrical centers of photo-detectors of television cameras, and also by means of laser viewfinder, probe emission of which is performed in direction towards reflective table through groove, made in base of television system, in parallel to its mounting plane. |
Another patent 2528624.