Lens for holographic systems |
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IPC classes for russian patent Lens for holographic systems (RU 2132077):
 Small lens-collimator / 2010269
The invention relates to optical instruments, and can be used to create matching devices of the light guide paths for communication systems and information transfer
 The holographic lens for glasses (options) / 2128355
The invention relates to optics and, more specifically, to the design of lenses for sunglasses, decorative, advertising or club holographic glasses, the effect of which is provided a holographic image arising from the illumination lenses natural or artificial light
 Holographic optical display system information / 2057352
The invention relates to optical instruments, and in particular to a technique of displaying information, and more particularly to holographic systems information input from the display field of view of the operator, and can be used in simulators, video games, different modes of transport, in particular in cars
 The wavefront sensor / 2046382
The invention relates to the optical instrument and is intended for measurement of aberrations of optical systems
 Narrow-band selector on the basis of the reflective phase of the three-dimensional hologram / 2035766
The invention relates to holography
 Diffraction display, diffraction device, method for forming of display and method for forming different diffracted beams / 2256202
Device is used for displaying graphic images. One of variants of its realization includes holographic diffraction picture 100, positioned on constant magnet 120 or element connected to it, and coil or wire 160, through which current is let for moving the magnet. Rotation of holographic diffraction picture relatively to axis 10 forms an image using light, diffracting on holographic diffraction grid. Other variant of realization of display includes faceted rotary element, including facets matrix, each of which contains diffraction grid, and drive, meant for rotation of faceted rotary element from idle position to observation position. Rotation of faceted rotary element leads to forming of image by diffracted light.
 Directing optical signals by means of mobile optical diffraction component / 2256203
Source 70, 72, 74, 76 of optical signals 10 is directed toward mobile optical diffraction component 32. Each optical signal is characterized by its respective wavelength. Mobile optical diffraction component generates output optical signals 92, 94 and distributes them between output devices 88, 90.
 Photopolymer recording media for three-dimensional optical memory for very-large-scale information capacity / 2325680
Invention pertains to organic light sensitive recording media and can be used for making archival three-dimensional holographic optical memory with large scale information capacity. The photopolymer recording medium is described. It consists of solid triplexed polymer films or glass plates and light-sensitive layer between them, including unsaturated compounds, which are capable of ion-radical photopolymerisation; a system providing for photoactivation through radiation in the 400-600nm range and consisting of photochromic compounds and co-initiator. The light sensitive layer contains photochromic compounds with a long mean life of the photo-induced state or thermal irreversible photochromic bonds, and not necessarily, polymer binder, plasticizer and non-polymerisation organic liquid with a large refractive index. There is also proposed usage of such a recording medium in devices for three-dimensional holographic memory of large scale capacity.
 Hologram filter (versions) / 2376617
Hologram filter relates to devices for filtering optical radiation. The filter consists of a transparent substrate, coated with a transparent polymer film which contains a reflection hologram, and a protective layer adjacent to the polymer film. In the first version, the protective layer is in form of an optical wedge, the working surface of which, except the radiation inlet window in the thin part of the wedge, is coated with a reflecting layer. In the second version the filter additionally contains a mirror, placed opposite the reflecting hologram with possibility of varying the angle between the mirror and the hologram. Upon double passage of radiation through the reflecting hologram at different angles of incidence, a narrow spectral peak of the passing radiation is obtained at the output.
 Multipoint ophthalmological laser probe / 2435544
Group of inventions relates to medical equipment, namely, to laser probes and their combinations, applied in ophthalmology. Probe contains irradiating optic fibre for light beam irradiation, optic system, located on the irradiation side of irradiating optic fibre, and two or more receiving optic fibres, located opposite to irradiating optic fibre. Optic system contains diffractive surface. Light beam, irradiated by irradiating optic fibre, is diffracted into two or more diffracted light beams, focused in plane, parallel to diffraction surface. Receiving ends of each of two or more receiving optic fibres, are intended for reception of light beam, diffracted by optic system, are located in plane, parallel to diffraction surface. Another version of implementation is ophthalmologic laser probe, containing irradiating optic fibre and optic system, located on irradiation side of irradiating optic fibre. Optic system is made in the same way as in the previous version. Connection for laser probe contains case, optic system, located in case, first connecting link, located on one side of optic system; and second connecting link, located on the other side of optic system. Optic system contains diffraction surface, each of two or more diffracted light beams is focused in plane, parallel to said surface.
 Devices and methods for data storage / 2459284
Storage device comprises a plastic substrate, having multiple volumes arranged in the form of paths along multiple vertically packaged layers. The substrate demonstrates a non-linear optically sensitive functional characteristic, which is a threshold functional characteristic. The device comprises multiple micro-holograms, every of which is contained in the appropriate one of the volumes. Availability or absence of a microhologram in each of volumes characterises a stored data area.
 Plastic apochromatic lens / 2464600
Lens consists of five components, the first of which is in form of a biconvex lens, the second consists of a negative meniscus whose convex surface faces the object, on which a holographic optical element with optical power equal to 0.005-0.015 times the optical power of the lens is deposited, and a biconvex lens whose larger convex surface faces the object; the third and fourth components are aspherical positive menisci whose convex surfaces face the object; the fifth component is a plane-parallel plate.
 Optical system for holographic video camera / 2464608
Optical system for a holographic video camera includes an optical waveguide with an input holographic element on its surface, a lens, a visible radiation detector, an infrared radiation detector and a photoelectric converter connected to said detectors. The input holographic element is configured to split input radiation into visible and infrared parts. The optical waveguide is configured to transfer the visible part of radiation towards the visible radiation detector and the infrared part towards the infrared radiation detector. The lens is configured to form an image of an object through the optical waveguide and the holographic element on the detector. The photoelectric converter is configured to determine the phase difference between output signals, which are radiation intensity distribution in images obtained from visible and infrared radiation detectors.
 Method of making high radiation brightness laser diode / 2477915
Wide-emitter laser medium which is capable of generating multimode optical radiation is formed, having an active waveguide emitting layer, a first end and a second end. A partially transparent mirror is formed at the second end of the wide-emitter laser medium. The wide-emitter laser medium with a partially transparent mirror is placed on a high thermal conductivity substrate. A device is formed for adjusting the mode structure, which is based on a digital planar hologram, having an input end, said device being formed by forming a digital planar hologram at the first end of the wide-emitter laser medium in optical interaction with said hologram; the digital planar hologram is used as an opaque mirror by placing it on the same substrate as the laser medium, as a result of which an optical cavity is formed, and modes of optical radiation of the laser diode are selected, adjusted and amplified according to a give function.
 Optical sight with alternating magnification / 2282223
The sight with an alternating magnification has a three-lens objective, sight reticule, field component, two-component panchromatic erecting system, range-finding reticule, collective lens and an ocular installed in succession in the direction of rays. The objective has cemented first two lenses-biconvex and negative ones, and the third lens-singular positive meniscus turned with the convexity to the object. The biconvex and singular lenses are made of the same material with dispersion factor νD, which corresponds to condition 50≤νD≤70 that is more than the dispersion factor of the material of the negative lens by 2 to 2.5 times. The relations given in the patent claim are fulfilled between the focal distances of the cemented lens, objective, biconvex lens, negative lens and singular lens.
 Large-aperture lens / 2346312
Lens consists of two components installed in succession along the beam path. The first component is double-lens, which consists of a double-convex lens and a negative meniscus lens glued together; convex side of the latter is at the image side. The second component is a single positive meniscus lens with its concave side to the image. |R2|/|R4|=1, |R3|/|R5|=1, where R2, R3, R4, R5 - radii of curvature of the 2nd, the 3rd, the 4th and the 5th optical faces, respectively, along the beam path.
 Wide-angle high-aperture lens with ultra wide operating spectral range / 2369886
Lens can be used in thermal imaging, television and heat source direction finding devices. The lens consists of at least two components, each of which contains at least two lenses stuck together. The objective uses optical material with spectral transparency range of at least 0.85…10.6 mcm. Refraction index of at least two lenses is greater than 2.1. One of the surfaces has the shape of a quadric ellipsoid. The entrance pupil of the lens is on the first surface.
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(57) Abstract: Lens for holographic systems relates to the field of optical measurements. Lens for holographic systems contains located in a homogeneous environment on the same optical axis concentric spherical meniscus and a biconvex lens in such a way that their principal optical plane coincide. While the object under examination is placed in the front focal plane of the lens, and the radiation receiver in the rear. Randomly located source of coherent light illuminates the object under examination. As a consequence, each point of the investigated object becomes a source of secondary waves. Concentric spherical meniscus plays the role of a multi-beam interferometer, and a biconvex lens projecting the resulting interference pattern on the detector. Lens for holographic systems allows to obtain a holographic image of the investigated object, locking the phase and amplitude components of the signal. As the radiation receiver selects a matrix of photosensitive elements on the charge-coupled devices with high resolution. Lens for holographic systems pozvolyaet. 1 C.p. f-crystals, 1 Il. The invention relates to the field of optical measurement and can be used in optical surveillance systems, photographic recording, and holographic systems. Known multibeam interference device (application N 94035715/50 from 23.09.94 g, a positive decision from 05.04.96, containing on one optical axis point source of coherent linearly polarized radiation, installed on a course of radiation two parallel surfaces are spherical from optically transparent material, with a single center of curvature but different radii of curvature, and a photosensitive detector. In this device, the multipath interference occurs due to the interference of secondary waves, the centers of which are located on the first spherical surface. Svetalana occurs due to partial reflection of the incident light flux from the first and second spherical surfaces of multipath interference device. Focusing of optical beams occurs with lens with concentric spherical surfaces. The disadvantage of this multipath interference device is that its what you can get information about the geometrical dimensions of the object (the amplitude component of the signal). The closest in technical essence to the proposed lens for holographic systems is the system of recording of the hologram of the Fourier Fraunhofer, which is known as the schema entries in the focal planes (scheme focus-focus). This scheme is described in the monograph Optical holography: TRANS. c angl. Ed., Caulfield.-M.:Mir, 1982, c. 187. In this scheme, the object and reference point source located in the front focal plane of the lenticular lens, and the photographic plate is placed at the back focal plane of this lens. Each point of the object creates a parallel beam of light incident on the photographic plate. Off-axis point reference source also converted biconvex lens, resulting in collimated reference beam propagating at an angle to the optical axis. Watching from the side of the hologram, you can see that the object and reference source is actually located in infinity. The disadvantage of the prototype is the inability to determine the spatial position of the object relative to the holographic system. The task to be solved by the invention, is the lack of definition is the ache is solved by that lens for a holographic system that includes a biconvex lens 1 and a concentric spherical meniscus 2, in which the main plane coincide, the front focus of the lens coincides with the front focus F2concentric spherical meniscus 2, the back focus back focus (F1) lenticular lens 1, the object is located in the front focal plane of the concentric spherical meniscus 2, the object is located in the front focal plane of the concentric spherical meniscus 2, and a three-dimensional image is formed in the rear focal plane of the lenticular lens 1. The technical result that can be obtained when implementing the present invention lies in the fact that this lens allows you to create a monocular holographic television system by taking into account diffraction effects occur on the concentric meniscus lens. The drawing shows a diagram of the lens for holographic systems. Lens for holographic systems contains located on the same optical axis concentric spherical meniscus 2 and the lenticular lens 1. The main optical plane holographic oboloi lens 1. The center of curvature C2concentric spherical meniscus 2 is located at the intersection of main optical plane of the lens HH' and the optical axis, r1and r2the radii of curvature of the larger and the smaller spherical surfaces concentric spherical meniscus 2, respectively. The object And the observation is located in the area of the front focus lens F2and the image receiver is located in the rear focus of the holographic lens (F1). Lens for holographic systems works as follows. The object And observations located in the region of the front focus lens F2, illuminated randomly located source of coherent light (not illustrated). Thus, each point of the object of observation is a source of secondary waves. Concentric spherical meniscus 2 plays the role of a multibeam interferometer, whose thickness d is determined by the formula:d = n r21/(f (n - n0) + n r1), (1) where r1the radius of curvature of the first spherical surface, n is the refractive index of optically homogeneous material, n0the refractive index of the medium, f - focusnode in the front focus F2seems a planar wave front for the main optical plane HH' concentric spherical meniscus. With a small curvature radius r1the first spherical surface and a small thickness d of concentric spherical meniscus 2 main optical plane HH' is outside the scope of this lens. Concentric spherical meniscus 2 has a main plane center of curvature C2concentric spherical surfaces. Biconvex lens 1 has a main optical plane HH'. The design of the holographic lens is such that the plane of the concentric spherical meniscus 2, located at the point C2combined with the main plane HH' lenticular lens 1. This allows you to form a three-dimensional image in the rear focus of the lenticular lens, defined by the formula: f = n r / (n - n0), (2) where f is the focal length, n is the refractive index of optically homogeneous material, n0the refractive index of the medium, r is the radius of curvature of the spherical surface, without the distortion of information about the geometric dimensions of the test object. Recording a holographic image registration means as phase images on the radiation receiver. If the sensor is in the rear focus lens falls flat luminous flux, the amplitude of light on the photodetector is maximized. If a point source of radiation is in the front focus of concentric spherical meniscus 2, the spherical wave passing through the meniscus will have a flat wave front. In this case, the phase modulation signal. Flat wavefront after passing through concentric spherical meniscus using a lenticular lens 1 is converted into a dot image in the rear focus lens, that is the amplitude modulation of the light signal. Thus, this lens allows you to get a holographic image of the investigated object, the locking of the phase component signal by using concentric spherical meniscus 2 role of the multibeam interferometer, and the amplitude component by using a biconvex lens 1. As the radiation receiver, you can use the matrix of photosensitive elements on the charge-coupled devices (CCD) or a film. To obtain a high definition image you want to use photoresistive matenience with a grain size not more than 2 μm. The proposed lens for holographic systems has the following advantages: the possibility of obtaining a holographic image, simple design and small size of the lens. Industrial application: the proposed lens for holographic systems will find application in holographic information processing systems, particularly in systems of precise pozycjonowanie. 1. The holographic lens for systems containing a biconvex lens, characterized in that it further comprises a concentric spherical meniscus, located in front of the lenticular lens, with the main plane of the meniscus and the lenticular lens are the same, the front focus of the lens coincides with the front focus of concentric spherical meniscus, and the back focus of the lens coincides with the rear focus of the lenticular lens. 2. The lens under item 1, characterized in that the object is located in the front focal plane of the concentric spherical meniscus, and a three-dimensional image is formed in the rear focal plane of the lenticular lens.
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