Patent application number | Description | Published |
20130215930 | TEMPERATURE MEASUREMENT SYSTEM AND TEMPERATURE MEASUREMENT METHOD - To measure the temperature in a temperature-measurement target disposed in a first area, an optical fiber is drawn to the first area from a second area having an adjusted temperature, and the optical fiber is installed in the temperature-measurement target. Furthermore, a reference temperature-measurement unit is provided in the second area. A temperature measurement apparatus detects backscattered light generated in the optical fiber, and detects temperatures at multiple measurement points along an installation path of the optical fiber. When making a correction on a signal outputted from the temperature measurement apparatus, a signal processor replaces temperatures at measurement points located in the second area among the measurement points with a temperature at the reference temperature-measurement unit. | 08-22-2013 |
20130273825 | AIR-CONDITIONING CONTROL SYSTEM AND AIR VOLUME ADJUSTMENT DEVICE - An air volume adjustment device is located at a vent for connecting an equipment installation area, where a rack for housing computers is installed, to a free access floor provided below a floor of the equipment installation area and supplied with air from an air conditioner. The air volume adjustment device includes an air volume adjustment sheet provided with an opening to allow passage of air, a first roll connected to one end portion of the air volume adjustment sheet and made capable of reeling in the air volume adjustment sheet, and a second roll located away from the first roll, connected to another end portion of the air volume adjustment sheet, and made capable of reeling in the air volume adjustment sheet. | 10-17-2013 |
20140146850 | TEMPERATURE DISTRIBUTION MEASUREMENT APPARATUS AND TEMPERATURE DISTRIBUTION MEASUREMENT METHOD - A temperature distribution measurement apparatus includes a laser light source optically connected to an optical fiber, a photodetector configured to detect light backscattered in the optical fiber, and a temperature distribution measurement unit configured to obtain a true measured temperature distribution by performing correction calculation using a transfer function on a temporary measured temperature distribution obtained based on an output from the photodetector. The temperature distribution measurement unit stores therein data on a transfer function set for each entire length of the optical fiber and for each longitudinal position in the optical fiber. Then, when the length of the optical fiber is changed, the temperature distribution measurement unit changes the transfer function to be used in the correction calculation by using the data on the transfer function. | 05-29-2014 |
20140153611 | TEMPERATURE DISTRIBUTION MEASUREMENT SYSTEM, TEMPERATURE DISTRIBUTION MEASUREMENT APPARATUS, AND TEMPERATURE DISTRIBUTION MEASUREMENT METHOD - A temperature distribution measurement system includes an optical fiber, a laser light source optically connected to the optical fiber, a photodetector configured to detect light backscattered in the optical fiber, and a temperature distribution measurement unit configured to perform correction calculation using a transfer function on a measured temperature distribution obtained from an output from the photodetector. The temperature distribution measurement unit acquires an actual temperature distribution in a location where the optical fiber is laid and determines appropriateness of the transfer function by computing a difference between the measured temperature distribution after the correction and the actual temperature distribution. | 06-05-2014 |
20150226679 | ABNORMALITY DETECTION SYSTEM AND ABNORMALITY DETECTION METHOD - An abnormality detection system includes an optical fiber, a Raman scattered light detection unit, and a data processing unit. The detection unit is configured to detect Stokes light and anti-Stokes light which are generated in the optical fiber and to output data on the intensity distribution of the Stokes light in the optical fiber in the length direction thereof and data on the intensity distribution of the anti-Stokes light in the optical fiber in the length direction. The processing unit is configured to calculate the product of a value obtained by applying an FIR filter to the intensity distribution of the Stokes light, and a value obtained by applying the FIR filter to the intensity distribution of the anti-Stokes light for each of locations on the optical fiber in the length direction, and to determine whether or not abnormality is present based on the result of the calculation. | 08-13-2015 |
20150233771 | TEMPERATURE MEASUREMENT SYSTEM AND ABNORMALITY DETECTION METHOD - A temperature measurement system includes an optical fiber, a temperature distribution measurement apparatus, and a data processing apparatus. The temperature distribution measurement apparatus is configured to detect backscattered light by causing light to enter the optical fiber, and acquire the temperature distribution of the optical fiber in the length direction thereof based on the result of the detection. The data processing apparatus is configured to store therein the temperature distribution acquired by the temperature distribution measurement apparatus, perform signal processing on a difference temperature distribution obtained by computing the difference between a current temperature distribution and a past temperature distribution, and determine whether or not abnormality is present based on the result of the signal processing. | 08-20-2015 |
20150241251 | ABNORMALITY DETECTION SYSTEM AND ABNORMALITY DETECTION METHOD - An abnormality detection system includes an optical fiber, a backscattered light detection unit, and a data processing unit. The detection unit is connected to one end and the other end of the optical fiber and configured to acquire a first intensity distribution of backscattered light by causing light to enter the optical fiber from the one end, and to acquire a second intensity distribution of backscattered light by causing light to enter the optical fiber from the other end. The processing unit is configured to calculate the product of a value obtained by applying a first FIR filter to the first intensity distribution, and a value obtained by applying a second FIR filter to the second intensity distribution, for each of locations on the optical fiber in the length direction thereof, and to determine whether or not abnormality is present based on the result of the calculation. | 08-27-2015 |
20160061668 | TEMPERATURE DISTRIBUTION PREDICTION METHOD AND AIR CONDITIONING MANAGEMENT SYSTEM - A temperature distribution prediction method of predicting a predetermined temperature distribution in an air conditioning system, the air conditioning system including an air conditioner for supplying temperature-adjusted air into a room where racks in which electronic apparatuses are accommodated are installed; and air blowers for transferring the air supplied from the air conditioner to an intake side of the racks, the method includes: measuring the temperature distribution for actual conditions varying the operating situations of the air blowers; and predicting the temperature distribution for conditions of non-measurement for the air blowers based on the measured values. | 03-03-2016 |
Patent application number | Description | Published |
20090231512 | DISPLAY AND REFLECTION BOARD - A display is provided that comprises a reflection board and a display element. The reflection board includes a plurality of first inclinations and a plurality of second inclinations which are alternately arranged to form an uneven reflective surface to reflect and diffuse incident light. The display element has controllable transparency at each pixel and is disposed in front of the reflective surface. The mean inclination angle of the first inclination occurs within a range of 10 to 25 degrees. | 09-17-2009 |
20110109663 | ILLUMINATING DEVICE AND DISPLAY UNIT - An illuminating device capable of improving display luminance while decreasing light leakage in a range with a large view angle and a display unit are provided. In a light modulation device bonded to a light guide plate, a light modulation layer containing a bulk and microparticles is provided. Both the bulk and the microparticles have optical anisotropy, and each response speed to an electric field is different from each other. Thereby, by controlling the electric field, each optical axis orientation of the bulk and the microparticles is able to correspond with each other, or is able to be different from each other. | 05-12-2011 |
20110141551 | ILLUMINATION DEVICE AND DISPLAY DEVICE - An illumination device is provided and includes: a light guide member; a light source provided on one or more side faces of the light guide member; and a light modulating element including a pair of transparent substrates disposed to oppose each other with a gap therebetween, a first electrode provided on a surface of one of the transparent substrates, a second electrode provided on a surface of the other of the transparent substrates, and a light modulation layer provided in the gap and expressing a scattering property or a transparency to light from the light source in accordance with a magnitude of an electric field. The first electrode, the second electrode, or both thereof is patterned, and a density of pattern of the first electrode, the second electrode, or both thereof to which the patterning is applied is varied depending on a distance from the light source. | 06-16-2011 |
20110228558 | PLANAR LIGHT SOURCE DEVICE - Conventional planar light source devices have a problem that increasing a utilization ratio of light results in a very narrow angle distribution of light. A planar light source device of the present invention has a light source ( | 09-22-2011 |
20110242146 | LIGHTING DEVICE AND DISPLAY DEVICE - A lighting device includes: a light guide plate; a light source; and a light modulation element disposed on a surface of or in the inside of the light guide plate, and adhered to the light guide plate. The light modulation element has a pair of transparent substrates, a first electrode provided on a surface of one of the transparent substrates, a second electrode provided on a surface of the other of the transparent substrates, and a light modulation layer, provided in a gap between the transparent substrates, exhibiting a light-scattering property or a light-transmitting property concerning light from the light source depending on intensity of an electric field. One or both of the first and second electrodes include partial electrodes. First partial electrodes of the partial electrodes are adjacent to second partial electrodes of the partial electrodes, and have irregular shapes on edges adjacent to the second partial electrodes. | 10-06-2011 |
20110249221 | LIGHTING DEVICE AND DISPLAY DEVICE - A lighting device includes: a light guide plate; a light source disposed on a side face of the light guide plate; and a light modulation element disposed on a surface or in the inside of the light guide plate and adhered to the light guide plate. The light modulation element has a pair of transparent substrates disposed separately and oppositely, a pair of electrodes provided on respective surfaces of the pair of transparent substrates, and a light modulation layer provided in a gap between the pair of transparent substrates. The light modulation layer includes a first region, having optical anisotropy, responsive to an electric field, and a second region, having optical anisotropy, unresponsive to an electric field. The second region has a striped structure with average striped texture size of 0.05 μm to 10 μm both inclusive in a short axis direction. | 10-13-2011 |
20110310330 | THIN BACKLIGHT SYSTEM AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME - According to a conventional backlight device for use in a thin full-color display device in which pixels are subjected to a color separation by colored lights, a large chromatic aberration occurs, thereby causing a deterioration in image quality. A thin backlight system in accordance with the present invention includes: a light emitting section ( | 12-22-2011 |