Nakamura, Hitachi
Kiyomi Nakamura, Hitachi JP
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20080211984 | Liquid crystal display device and plasma display device - An image display device designed to improve shock resistance and to eliminate external image reflection and blurring. In an liquid crystal display device are disposed a backlight, a polarizing plate on the backlight side and a liquid crystal panel held by two glass substrates and having electrodes, a liquid crystal layer, an alignment layer and a color filter therein. The image display device has a transparent front plate provided on the liquid crystal panel opposite from the backlight, a transparent organic medium layer provided between the front plate and the liquid crystal panel, and an antiglare layer provided on the front plate opposite from the transparent organic medium layer. | 09-04-2008 |
20090148688 | OPTICAL MATERIALS - An optical material having a reflecting membrane, an enhanced reflecting membrane, or an anti-reflecting membrane formed with coating is provided. The optical material includes an optical material matrix, and a first inorganic compound layer and a second inorganic compound layer which are alternately stacked on the optical material matrix, wherein the first inorganic compound layer is formed of a titanium compound having a hydrolysable residue and oilophilic smectite and has a refractive index higher than the refractive index of the optical material matrix, and wherein the second inorganic compound layer includes silicon oxide and has a refractive index lower than the refractive index of the optical material matrix. | 06-11-2009 |
20100066943 | BACK LIGHT DEVICE, LIQUID CRYSTAL DISPLAY APPARATUS AND IMAGE DISPLAY APPARATUS USING THE SAME - The liquid crystal display apparatus includes a liquid crystal panel and the back light device for emitting the light from a light source to the liquid crystal panel through a lens. The light source includes a first LED for emitting the light of a first color, a second LED for emitting the light of a second color, a third LED for emitting the light of a third color, a fourth LED for emitting the light of the third color, a fifth LED for emitting the light of the second color, and a sixth LED for emitting the light of the first color. The first, second, third, fourth, fifth and sixth LEDs are arranged on the wiring board in such a manner as to offset the deviation of the light distribution. | 03-18-2010 |
Motoyoshi Nakamura, Hitachi JP
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20110110637 | OPTICAL FIBER, END PART PROCESSING METHOD OF OPTICALFIBER, AND END PART PROCESSING APPARATUS OF OPTICAL FIBER - An optical fiber that has no bubbles in the ultraviolet ray curable resin filled inside the air holes to seal the end parts thereof, an end part processing method of the optical fiber, and an end part processing apparatus of the optical fiber, are provided. In an end part processing method of an optical fiber that is comprised of a core and a cladding formed around the core, the cladding having a refraction index lower than that of the core and has a plurality of air holes formed therein along the axis of the core, wherein the end part process of the optical fiber is to form sealed portions on the ends of the air holes by sealing them with ultraviolet ray curable resin, the method is characterized in that the sealed portion is formed by heating the end of the optical fiber. | 05-12-2011 |
Motoyuki Nakamura, Hitachi JP
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20090122942 | APPARATUS FOR ULTRASONIC INSPECTION OF REACTOR PRESSURE VESSEL - An object of the present invention is to provide an inspection apparatus for inspecting weld zones in a reactor pressure vessel, the inspection apparatus comprising: an ultrasonic probe | 05-14-2009 |
20110096888 | APPARATUS FOR ULTRASONIC INSPECTION OF REACTOR PRESSURE VESSEL - An object of the present invention is to provide an inspection apparatus for inspecting weld zones in a reactor pressure vessel, the inspection apparatus comprising: an ultrasonic probe | 04-28-2011 |
20110103536 | APPARATUS FOR ULTRASONIC INSPECTION OF REACTOR PRESSURE VESSEL - An object of the present invention is to provide an inspection apparatus for inspecting weld zones in a reactor pressure vessel, the inspection apparatus comprising: an ultrasonic probe | 05-05-2011 |
20110148404 | METHOD AND APPARATUS FOR EVALUATING LENGTH OF DEFECT IN EDDY CURRENT TESTING - The surface length of a metal subject to be inspected is evaluated by detecting an eddy current without using a combination of a scale and visual or liquid penetrant inspection. An exciting coil and a detecting coil are scanned above the subject in a length direction. An eddy current detector measures an output voltage corresponding to scanning positions based on an output from the detecting coil. Based on an output voltage distribution curve indicating a distribution of output voltages corresponding to the scanning positions, position information is extracted corresponding to values which are within a differential voltage range and lower by 12 dB than a maximum value of the output voltages on the left and right sides of the distribution. A distance between the positions included in the extracted information is calculated to evaluate the length of a slit which is a defect present on the subject surface. | 06-23-2011 |
Takayoshi Nakamura, Hitachi JP
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20080198548 | Power Converter - A power converter of the present invention includes at least two power semiconductor modules having a plurality of switching devices, at least two cooling jackets having a coolant path for cooling the plurality of power semiconductor modules and equipped with the power semiconductor modules, a capacitor module interposed between the at least two cooling jackets, and a connector provided in the at least two cooling jackets for connecting the coolant path. | 08-21-2008 |
20100139997 | ELECTRICAL APPARATUS, COOLING SYSTEM THEREFOR, AND ELECTRIC VEHICLE - An inverter apparatus includes a liquid path in which cooling water flows, and in which the cooling water performs cooling at a cooling part located directly underneath the power circuit part of the inverter apparatus. The liquid path includes a first partial structure part formed between a feed pipe and the cooling part, and having a liquid path cross-sectional profile that is gradually reduced in the short-side direction of the cooling part and that is gradually enlarged in the long-side direction thereof; and a second partial structure part formed between the cooling part and a drain pipe, and having a liquid path cross-sectional profile that is gradually enlarged from the short-side of the cooling part and that is gradually reduced from the long-side thereof. | 06-10-2010 |
Tateki Nakamura, Hitachi JP
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20080206065 | TURBINE BUCKET - A turbine bucket is provided that can make centrifugal stress acting on a blade or dovetail not greater than a limit value of a material and that is provided with a shape of a blade root that can ensure a steam passage even if the blade is increased in length in order to increase an exhaust area. | 08-28-2008 |
Tomoharu Nakamura, Hitachi JP
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20130311121 | Method of Calculating Characteristics of Solar Cell and Solar Power Generation System - In order to provide a calculation method for reproducing solar cell characteristics with high accuracy by using data of a short-circuit current, an open-circuit voltage and the maximum power operation point of a solar cell in a temperature and a solar radiation intensity in a standard state, parameter values for determining characteristics in the standard state are calculated by using data of the short-circuit current, the open-circuit voltage and the maximum power operation point of the solar cell in the temperature and the solar radiation intensity in the standard state. Next, temperature coefficients of the open-circuit voltage and the reverse saturation current are calculated by using the calculated parameters, and a short-circuit current, an open-circuit voltage and the maximum power operation point at a given temperature are calculated. | 11-21-2013 |