Hologram filter (versions) |
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IPC classes for russian patent Hologram filter (versions) (RU 2376617):
             
 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.
 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.
 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.
 The method of recording a holographic diffraction grating in the volume of a photosensitive material (options) / 2199769
The invention relates to optics and can be used to create optical filters
 A method of manufacturing a holographic diffraction gratings / 2165637
The invention relates to holography and can be used for holographic protection of industrial goods and securities, optical instrumentation, laser technology, optoelectronics
 Lens for holographic systems / 2132077
 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
 Optic device / 2339061
Optic device includes objective lens and case, and at least one device with electrically adjustable light absorption or light reflection, including at least two parts, where each part can change light flux pass rate depending on electric signal magnitude fed to the part, and at least one correction matrix consisting of at least two elements, each element connected electrically to respective part of device with electrically adjustable light absorption or light reflection, and can produce electric signal, depending on intensity of incident light flux.
 Optical filter / 2331907
Optical filter includes an active element of zinc-cadmium telluride Cd1-xZnxTe (0≤x<1) nanoparticle layer with nanoparticle size of 5-10 nm and layer thickness of 30-50 nm, the layer being grown on a passive element surface of crystal zinc telluride (ZnTe). Variable "x" in the formula Cd1-xZnxTe allows giving specific spectral cutoff position within the wavelength range of 0.550 micron (x=1) to 0.838 micron (x=0).
 Neutral colour filter / 2331906
Neutral colour filter consists of intermittent layers of crystal gallium monoselenide GaSe and gallium nanoparticles and maintains uniform attenuation of radiation with wavelength of 2.5-15 micron. Attenuation rate can be adjusted by increasing or reducing number of gallium particle layer.
 Millimeter wave range optically transparent reflector / 2313811
Millimeter wave range system has device for reflecting incident radiation of millimeter wave range beam and for transmission of optical frequencies. Device has first layer of dielectric material made for reception and partial transmission of millimeter wave range incident beam, and one or several additional layers made of dielectric materials, which layers are lined up in relation to first layer. Additional layer partial transmits wave received through previous layer. Thickness of each layer is chosen in such a way that transmitted waves are damped in straight direction which results to high level of losses for propagation and high reflection. As a result, device reflects incident millimeter wave range beam while keeping optical transparency. Device can have alternating layers of optical sapphire and air.
 Method of production of optical filter / 2308061
Method of production of optical filters for IR spectrum range is described. Optical dissipation filters are produced due to molding of powder. Cadmium telluride powder is subject to molding, which nano-powder has grains sizes of 10-15 nm at temperature of 18-25°C at molding pressure of 700-750 MPa. Dissipation filter is created which filter has point of complete attenuation at wavelength of 1, mcm and its transmission band belongs to 1,67-14 mcm range.
 Method for spectral filtration of radiation / 2297652
Method includes selecting substances being in optical contact and forming interface with negative derivative of dependence of angle of full internal reflection and wave length in optical more dense environment and using two pairs of optical environments for filtration of radiation. During reflection of polychromatic beam from interface of environments with positive derivative of dependence of full internal reflection angle and wave length, spectral components with wave length greater than given threshold are removed from the beam, and during reflection of polychromatic beam from interface of environments with negative derivative of dependence of full internal reflection angle and wave length, spectral components with wave lengths less than given threshold are removed. Plane angle, within limits of which a beam of source radiation expands in plane, wherein optical axes of falling radiation beam and radiation beam being reflected from interface of environments are located, may be limited by calculated value, determined on basis of required spectral resolution.
 Diffraction attenuator with alternating transmission / 2285942
Attenuator consists of plate made of optical material with surface layer, made in form of diffracting screen. Diffracting screen is made circular, while fingers are made in form of series of recesses or projections. Attenuator is made with possible rotation in angular direction relatively to center of diffracting screen. Surface layer is made additionally containing circular zone with one non-transparent finger and with a series of non-transparent fingers.
 5-(2'-acrylamidophenyl)-15-(3',5''-di-tertiary-butylphenyl)-3,7,13,17-tetramethyl-2,8,12,18-tetraethylporphyne as coloring substance of optical filter / 2281305
Invention relates, in particular, to novel tetrapyrrole macroheterocycles - diphenyloctaalkylporphynes that can be used as a coloring substance of optical filters. Invention describes 5-(2'-acrylamidophenyl)-15-(3',5''-di-tert.-butylphenyl)-3,7,13,17-tetramethyl-2,8,12,18-tetraethylporphyne as a coloring substance of optical filters. This compound shows maximum absorption in the region 625 nm and can be used for preparing colored polymers used as optical filter.
 5-(4'-acrylamidophenyl)-2,8,12,13,17,18-hexamethyl-3,7-dibutylporphyne and 5-(3'-acrylamidophenyl)-2,8,12,13,17,18-hexamethyl-3,7-dibutylporphyne as coloring substance of optical filter / 2281304
Invention relates, in particular, to novel tetrapyrrole macroheterocycles - diphenyloctaalkylporphynes that can be used as a coloring substance of optical filters. Invention describes 5-(4'-acrylmidophenyl)-2,8,12,13,17,18-hexamethyl-3,7-dibutylporphyne (I) and 5-(3'-acrylamidophenyl)-2,8,12,13,17,18-hexamethyl-3,7-dibutylporphyne (II) as a coloring substance of optical filters. These compounds show maximum absorption in the range 624 nm and can be used for preparing colored polymers used as optical filter.
 5,15-bis-(4'-acrylamidophenyl)-3,7,13,17-tetramethyl-2,8,12,18-tetrabutylporphyne as coloring substance of optical filter / 2281303
Invention relates, in particular, to tetrapyrrole macroheterocycles - diphenyloctaalkylporphynes that can be used as a coloring substance of optical filters. Invention describes 5,15-bis-(4'-acrylamidophenyl)-3,7,13,17-tetramethyl-2,8,12,18-tetrabutylporphyne as a coloring substance of optical filters. This compound shows maximal absorption in the region 626 nm and can be used for preparing a colored polymer used as optical filter.
 Method for manufacturing infrared light filters / 2269802
In accordance to method for manufacturing infrared light filter, sodium fluoride crystal is irradiated by beam of Helium ions He+ with energy 1,5-4,6 MeV, while irradiation of working facet of crystal is performed up to fluence (1,2-3,0)·1016 ion/cm2.
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FIELD: physics; optics. SUBSTANCE: 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. EFFECT: obtaining half bandwidth of the order of several nanometres, high transmission coefficient in the bandwidth, high attenuation coefficient in the reject region, high beam strength. 2 cl, 9 dwg
The present invention relates to filtering devices of optical radiation and can be used in spectral instruments and sensors for various purposes, and also to protect your eyes and photodetector devices from laser radiation. Known bandpass interference filters [see, for example, Gainutdinov I.S., diffidently E.A., Khaibullin IB Interference coatings for optical instrumentation. "FENG", Kazan, 2002, p.2]. Interference bandpass filter is a system of layers, thickness, and refractive index are chosen so as to provide interference attenuation of radiation in the region of suppression and maximum transparency in the bandwidth. The disadvantages of these filters are the complexity of manufacturing, stringent operating conditions. Known combined filters of colored glass, for example, the combined filter to highlight the lines of the mercury spectrum [Catalogue of stained glass. "Engineering", Moscow, 1967]. This filter consists of two or three plates of colored glass, mark, and its thickness are chosen in such a way as to ensure maximum transmittance in the spectral interval with a width of >30 nm and the maximum suppression outside this interval. Nedostatkami filters are high bandwidth, low radial strength. The closest technical solution is a hologram clip filter [U.S. Patent 4, 965, 152. Holographic Notch filters / Keys et al. (23.10.90).]. This filter consists of a transparent substrate coated with a transparent polymer film containing a reflective hologram. The disadvantage of the prototype is relatively large spectral width of the strip reflection component value of the order of 7-50 nm. The objective of the invention is to provide a hologram producing filter with full width at half maximum bandwidth of the order of several nanometers, with a high transmittance in the passband and high attenuation in the field of suppression with high radial strength, simple in manufacture and operation through the use of the dependence of the spectral position of the peak reflectance of the reflective hologram from the angle of incidence of the radiation on the reflective hologram. This objective is achieved in that the hologram filter, consisting of a transparent substrate coated with a transparent polymer film containing a reflective hologram, and a protective layer adjacent to the transparent polymer film, the protective layer is made in the form of optical wedge, the working surface which, with the exception window for input radiation in the thin part of the wedge, covered reflect the named layer. This objective is achieved in that the hologram filter, consisting of a transparent substrate coated with a transparent polymer film containing a reflective hologram, and a protective layer adjacent to the transparent polymer film additionally contains a mirror placed in front of the reflective hologram with the ability to change the angle between the mirror and the reflective hologram. Hologram filter with an optical wedge is presented in figure 1. Hologram filter with mirror presented in figure 2. The swing beams in the holographic filter with an optical wedge are presented in figure 3. The swing beams in the holographic filter with mirror presented in figure 4. The principle of operation of the holographic filter with an optical wedge shown in figure 5. The principle of operation of the holographic filter with mirror shown in figure 5. The experimental curve of the transmission hologram filter with an optical wedge is presented on Fig.6. The experimental curve of the transmission hologram filter with mirror presented on Fig.7. Hologram filter with an optical wedge consists of a transparent substrate 1 coated with a transparent polymer film containing a reflective hologram 2 and the protective layer 3 adjacent to the transparent polymer film, made in the form of an optical wedge, the working surface is t which, except for a window in the narrow part of the wedge, which is used to input radiation, covered with a reflective layer 4. Hologram filter with mirror comprises a transparent substrate 1 coated with a transparent polymer film containing a reflective hologram 2, the transparent protective layer 3 adjacent to the transparent polymer film, and the mirror 4, is installed in front of the reflective hologram with the ability to change the angle between the mirror and the reflective hologram. Hologram filter with an optical wedge operates as follows: a beam of optical radiation with a continuous spectrum 5 passes through the protective layer 3 made in the form of an optical wedge, and falls on the reflective hologram 2. Reflected from the reflective hologram beam 6 impinges on the coated reflective layer part of the optical wedge 4 and reflected, passes through the same reflective hologram 2, but under a larger angle, then passes through the transparent substrate 1, and exits the filter. In the short-wave component 8 of the radiation reflected from the hologram, and the far-9 emerges from the optical element. At a certain angle at the vertex of the optical wedge and sufficient steepness of the long-wave boundary of the spectral contour of the reflection hologram can be obtained at the output of the spectral peak of the last radiation from SpectraLine full width at half maximum is several times less than that of the prototype (figure 4). It is also possible to reverse the course of radiation, when the radiation first impinges on a transparent substrate 1, and a working beam enters from the side of the protective layer 3. Spurious spectral peak in the short wavelength region, if necessary, can be suppressed low pass filter or another reflective hologram. Hologram filter with mirror works as follows: a beam of optical radiation with a continuous spectrum 5 passes through the protective layer 3 and is incident on the reflective hologram 2. Reflected from the reflective hologram beam 6 impinges on the mirror placed in front of the reflective hologram with the ability to change the angle between the mirror and the reflective hologram 4, and reflect again passes through the protective layer 3 and the reflective hologram 2, but under a larger angle, then passes through the transparent substrate 1, and exits the filter. In the short-wave component 8 of the radiation reflected from the hologram, and far 9 out of the filter. At a certain value of the angle between the reflective hologram and mirror and sufficient steepness of the long-wave boundary of the spectral contour of the reflection hologram can be obtained at the output of the spectral peak of the last radiation with the spectral width is several times less than that of the prototype (figure 5). The possibility is n and reverse beams, when the radiation first impinges on a transparent substrate 1, and a working beam enters from the side of the protective layer 3. Spurious spectral peak in the short wavelength region, if necessary, can be suppressed low pass filter or another reflective hologram. The principle of operation of the holographic filter with an optical wedge is as follows: a beam of light with a continuous spectrum passes through the reflective hologram is reflected in a narrow spectral interval (figure 5,a). The position of the spectral peak of the reflection depends on the angle of incidence of the radiation on the reflective hologram. With increasing angle of incidence of the spectral peak of the reflection hologram is shifted to shorter wavelengths (figure 5,b,...). In the hologram generates the filter is double filtered radiation. First released some spectral region by reflection of incident radiation from the reflective hologram, then this field is cut short by passing the beam through the same hologram under a larger angle. The result is a narrow spectral peak is presented in figure 4. The principle of operation of the holographic filter with mirror is as follows: a beam of light with a continuous spectrum passes through the reflective hologram is reflected in narrow spectral is m interval (figure 5,a). The position of the spectral peak of the reflection depends on the angle of incidence of the radiation on the reflective hologram. With increasing angle of incidence of the spectral peak of the reflection hologram is shifted to shorter wavelengths (figure 5,b, 5,b). In the hologram generates the filter is double filtered radiation. First released some spectral region by reflection of incident radiation from the reflective hologram, then this field is cut short by passing the beam through the same hologram under a larger angle. The result is a narrow spectral peak is presented in figure 4. To calculate the dimensions of the wedge and operational features of the holographic filter with an optical wedge we introduce the following notation: do- width of the incident beam, α is the angle at the vertex of the optical wedge, n is the refractive index of the material of the optical wedge, φ is the angle of incidence of the beam on the surface of the protective element, ψ is the angle of refraction. Then the minimum thickness of the optical wedge, at which there is no overlap of the incident and reflected beams inside the optical wedge is determined by the formula:
where the angle of refraction on the surface of the optical wedge is determined by the formula:
The thickness of the optical wedge at p is the account of the optical system can be increased from technological considerations, i.e. you can use a wedge with arbitrary thickness x>xmin. The minimum height of the wedge for a given thickness x and the width of the beam do:
The minimum length of reflective coatings, which must be applied on the working surface of the optical wedge:
The magnification of the optical system is determined by the ratio:
When n>1 this value is less than one, i.e. a narrowing of the beam. The deviation of the beam from its initial direction: Δφ=arcsin(nsin(ψ+3α))-φ. To calculate the dimensions and operating characteristics hologram filter with mirror we introduce the following notation: do- width of the incident beam, α is the angle between the plane of the hologram and mirror, φ is the angle of incidence of the beam on the surface of the hologram. Then the minimum distance between the reflective hologram and the point of intersection of the upper boundary of the incident beam (according to figure 2) with the plane in which lies the working surface of the mirror, at which there is no overlap of the incident and reflected beams inside the unit:
The minimum height of the reflective hologram for a given distance x and the width of the beam do:
The minimum length of the mirror: p>
The magnification of the optical system: G=1. The deviation of the beam from its initial direction: Δφ=3α. Hologram filter with an optical wedge can be a bonding of the reflective hologram and an optical wedge, partially covered with a reflective coating. The optical wedge provides the angle of incidence of radiation on the reflective notch filter when the second passage, and further functions as a protective glass. Hologram filter with a mirror can be a compact device with a rotary and/or linear movements, allowing you to adjust the angle between the hologram and the mirror. Depending on the purpose of the filter is possible designs. For example: the hologram and the mirror placed on the platform, and one of the elements has a rotational motion; a hologram is stationary, and the mirror has rotational and linear movement; a hologram and a mirror placed on two rods fixed at one end on a common axis of rotation, and are supplied with rotational movements, etc. The design of the holographic filter with an optical wedge allows to obtain a narrow spectral band of optical radiation, the width of which can be several times smaller than the prototype, with attributes is the super high transmittance in bandwidth and high attenuation in the field of suppression. The design of the holographic filter with mirror allows to obtain a narrow spectral band of optical radiation, the width of which can be several times smaller than the prototype, with a relatively high transmittance in the passband and high attenuation in the field of suppression, but also by changing the angles of incidence of the radiation on the reflective hologram allows you to rebuild a working wavelength and transmittance. The design of the holographic filter with an optical wedge provides a high radial strength due to the use of materials weakly absorbing in the specified wavelength range. Hologram generates a filter can be used both in laboratory and in field conditions, because it does not lose its properties in a wide range of temperatures and humidity. Component manufacturing and Assembly of the optical element is not present technical difficulties for optical engineering. The design of the holographic filter with mirror provides high radial strength due to the use of materials weakly absorbing in the specified wavelength range. Hologram generates a filter can be used mainly in laboratory conditions. Component manufacturing and Assembly of the device is not present technological difficult the TEI for optical engineering. 1. Hologram filter, consisting of a transparent substrate coated with a transparent polymer film containing a reflective hologram, and a protective layer adjacent to the transparent polymer film, wherein the protective layer is made in the form of optical wedge, the working surface which, with the exception window for input radiation in the thin part of the wedge is covered with a reflective layer. 2. Hologram filter, consisting of a transparent substrate coated with a transparent polymer film containing a reflective hologram, and a protective layer adjacent to the transparent polymer film, characterized in that it further comprises a mirror placed in front of the reflective hologram with the ability to change the angle between the mirror and the reflective hologram.
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