Patent application number | Description | Published |
20080310181 | Brightness with reduced optical losses - A fiber-bundle illumination system of high brightness with reduced optical losses comprises a plurality of light sources that emit lights of different colors and transmit the component lights of different colors to a light mixer through individual optical-fiber light guides assembled into a bundle, which is crimped at least at the inlet and outlet ends. Unique features of the system are optical coupling between the light sources and their respective light guides and mixing colors in a predetermined proportion that results in spatially uniform distribution of the spectrum on the illuminated area. The system may be used in conjunction with optical instruments such as endoscopic cameras, microscopes, etc. | 12-18-2008 |
20090241998 | Apparatus for foam-assisted wafer cleaning with use of universal fluid supply unit - An apparatus for foam-assisted cleaning comprising a closable container with a funnel-shaped working chamber formed between the surface of the semiconductor wafer and the tapered base plate. The apparatus is provided with a fluid supply unit that incorporates a foam generator in the form of conical body with a flat surface on a wider end face of the conical body. This flat surface functions as a deflector for jets of neutral gas ejected onto the deflector and reflected therefrom into the interior of the fluid supply body filled with a foamable liquid. The jets of neutral gas create a zone of reduced pressure that generates gas bubbles which form the foam. The latter is displaced from the foam generator into the working chamber through a Bernoulli nozzle formed by the tip of the conical body and the outlet opening of the foam generator. The foam is formed from de-ionized water, isopropyl alcohol, and, if necessary, a surfactant. In a modified form, the apparatus is provided with a drying unit for generating an IPA/N | 10-01-2009 |
20130100695 | Light-guide panel for display with laser backlight - The invention relates to a light-guide panel for an LCD with a laser backlight. The panel comprises a laser light source and a main ridge waveguide with a plurality of first holograms that change the direction of the laser light that propagates along the main ridge waveguide to the direction perpendicular to the latter. The first holograms are associated with thee light of predetermined wavelengths and are optically connected to respective transverse waveguides that lie in the same plane but are perpendicular to the main ridge waveguide. Each transverse ridge waveguide has a plurality of second holograms designed so that they change the direction of laser light that propagates along the transverse ridge waveguide in the direction at an angle to the plane of the LGP substrate. This angle should be close to 90° and may be obtained in the range of 70° to 85°. | 04-25-2013 |
20130121019 | Frontlight unit for reflective displays - The frontlight unit is intended for enhancing illumination of a reflective display having pixels arranged in a matrix pattern and using monochromatic laser lights as light sources. The unit contains a network of light-distribution planar ridge waveguides with holograms arranged in a matrix pattern that corresponds to the matrix pattern of the reflective display when it is applied onto this display and emits light in the downward direction in the form of diverging beams that fall onto the pixels of the reflective display and in the upward direction onto mirrors wherefrom light is reflected also in the form of diverging beams onto the reflective display. Thus, all of the light reflected from the holograms of the light-distribution planar ridge waveguides is not lost and is used entirely for illumination of the reflective display. The mirrors occupy no more than 5% of the display surface area. | 05-16-2013 |
20130155477 | AUTOSTEREOSCOPIC DISPLAY ASSEMBLY BASED ON DIGITAL SEMIPLANAR HOLOGRAPHY - This invention relates to autostereoscopic display assemblies, in particular for hand-held devices such as tablets, i-Pads, mobile phones, etc., wherein a stereoscopic effect is achieved by forming light beams are emitted from the display at different angles and with different polarization. The display assembly comprises a sandwiched structure consisting of a light-guide panel and a modified liquid-crystal display that is applied onto the light-guide panel. The panel has on its outer surface a net of light waveguides for delivery of light from the light source and for uniform distribution of light over the entire surface of the display. The different polarizations and angular directions of the beams perceived differently by a viewer's left and right eyes are achieved by providing the light-distribution waveguides with holograms of two different types. | 06-20-2013 |
20130242596 | FRONTLIGHT UNIT FOR ENHANCING ILLUMINATION OF A REFLECTIVE DISPLAY - The frontlight illumination system is intended for enhancing illumination of a reflective display having pixels arranged in a matrix pattern and using monochromatic laser lights as light sources. The unit contains a network of light-distributing planar ridge waveguides with holograms arranged in a matrix pattern that corresponds to the matrix pattern of the reflective display. The light-distributing holograms of the system are formed on opposite sides of each core of respective light-distributing planar ridge waveguides. Neighboring holograms located on opposite sides of the core are combined into pairs and are arranged on each core in positions at which they interact with a predetermined phase shift that doubles the intensity of light directed to the reflective display and extinguishes light directed to the external surface. | 09-19-2013 |
20130321742 | LIQUID-CRYSTAL DISPLAY WITH COHERENT ILLUMINATION AND REDUCED SPECKLING - Disclosed is a liquid-crystal display with coherent illumination. The display has a multilayered matrix structure comprising a matrix of micromirrors, lightguide panel with a matrix of holographic elements, a liquid-crystal matrix containing a plurality of liquid-crystal cells and a polarization analyzer. The micromirrors perform reciprocating linear or tilting movements. Therefore, in each current moment, the speckle pattern of the image shifts relative to the preceding pattern so that in each current moment the viewer sees an image in different micropositions, which are perceptible by the human eye as a quasistationary pattern. As a result, the speckle pattern seen by the viewer is smoothened. | 12-05-2013 |
20140002875 | SPECKLE-REDUCED LASER ILLUMINATION DEVICE | 01-02-2014 |
20140002876 | METHOD OF LASER ILLUMINATION WITH REDUCED SPECKLING | 01-02-2014 |
20140105611 | MULTICORE CHIP WITH HOLOGRAPHIC OPTICAL INTERCONNECTS - The invention provides optical interconnects of data-processing cores of multicore chips by means of digital planar holographic microchips on a host chip. The device comprises “N” laser light sources that generate lights of “N” different wavelength and “N” data-processing cores that produce data. Each data-processing core contains optical signal receivers and modulators/transceivers that receive lights from the laser light sources and have a function of modulating the light obtained from the laser light sources with the data produced by the cores thus producing modulated light signals which are further processed by the holographic microchip and then decoded by the receivers. The device is efficient in that it replaces electrical interconnects between the cores with optical interconnects and can be matched to current semiconductor production technology. | 04-17-2014 |
20140105613 | METHOD OF OPTICAL INTERCONNECTION OF DATA-PROCESSING CORES ON A CHIP - The invention provides optical interconnects of data-processing cores of multicore chips by means of digital planar holographic microchips. The method comprises delivering “N” laser lights to “N” data-processing cores on the host chip, coding the obtained optical signals by modulating them with the core-generated data, and then delivering the modulated and coded optical signals to a holographic microchip formed on the same substrate of the host chip as the data-processing cores, splitting the modulated and coded optical signals into (N-1)N modulated optical copy signals, delivering the copy signals to all data-processing cores except the one that generates the copy signals, and decoding the data obtained from the output signals delivered to the processing cores by the receivers. The method is efficient in that it allows replacing electrical interconnects between the cores with optical interconnects and can be matched to current semiconductor production technology. | 04-17-2014 |