Abstract: There is provided a stator of a rotary electric machine in which the proportion of the cross sectional area of a coil in the cross sectional area of the slot is high, and an electric power loss due to leakage flux can be reduced. The stator is a stator of a rotary electric machine including a stator and a rotor. The stator includes a stator core having multiple slots in a direction parallel to a rotational axis of the rotary electric machine, and a laminated flat-body conductor which is formed, in a press process, by laminating a predetermined number of flat-body conductors each of which has a predetermined shape. According to the predetermined shape, the flat-plate conductor has an open end portion such that the flat-plate conductor can be fitted in the stator core. The laminated flat-body conductor is inserted in the slots of the stator core, and the open end portion of the laminated flat-plate conductor is closed, whereby a coil is formed.

Abstract: The present invention relates to an insulator to be disposed in an armature core having a plurality of radially-formed salient poles. The insulator comprises a winding aligning portion having an approximately V shape (forming an angle of 60 degrees) and getting narrower from an outer side to an inner side in a radial direction of the armature core approximately at the middle between the salient poles to position a winding disposed at a first layer which is a most inner side in the radial direction of the armature core approximately at a middle between the salient poles. By this structure, it is possible to align the windings on the second layer and beyond, thereby preventing a dig-in and the like of the windings and hence preventing faulty insulation between the windings.

Abstract: A stator adapted for driving rotation of a rotor includes a stator body having a surrounding wall surface that surrounds a stator axis. A plurality of magnetic pole protrusions protrude radially from the surrounding wall surface relative to the stator axis, and a plurality of stator coils are respectively wound around the magnetic pole protrusions. A signal transmission unit is electrically coupled to the stator coils. Each of the magnetic pole protrusions has an outer periphery, and a recess formed inwardly from the outer periphery. Each of the stator coils has an inner conducting end that is accessible from the corresponding recess, thereby facilitating coupling of the inner conducting end to the signal transmission unit, and an outer conducting end electrically coupled to the signal transmission unit.

Abstract: The electric power steering apparatus includes a brushless motor as an electric motor. The motor has a rotor and a stator 34. The stator 34 includes: a back core BY; a plurality of teeth TS disposed along the circumference of the back core protruding from the back core BY toward its radial center and forming slots SL therebetween; and an exciting coil 38 wound around each of the teeth TS. Each of the slots SL is filled with a resin material. The back core BY is partially press-fitted into a yoke 21 so that the outer surface of the back core BY comes partially into contact with the inner surface of the yoke 21 along their circumferences.

Abstract: The invention is to provide a metal plate of laminated heterogeneous materials, and an iron core of the same, where a plurality of metal plates of different material qualities are easily and stably joined, have characteristics over many applications, may attain low production cost, and provide a making method thereof. That is, a metal plate of laminated heterogeneous materials, which is joined by laminating a plurality of metal plates of different material qualities, is joined by caulking a first material body of the metal plate of the laminated heterogeneous materials having notches at intermediate parts thereof, as well as caulking projections formed by cutting down rows of both ends thereof in the length direction of the notches, and a second material body of the metal plate of the laminated heterogeneous materials formed with caulking holes for inserting the caulking projections, at the caulking projections of said first material body and the caulking holes of the second material body.

Abstract: Electric motor components are formed of a conductive loaded resin-based material. The conductive loaded resin-based material comprises micron conductive powder(s), conductive fiber(s), or a combination of conductive powder and conductive fibers in a base resin host. The percentage by weight of the conductive powder(s), conductive fiber(s), or a combination thereof is between about 20% and 50% of the weight of the conductive loaded resin-based material. The micron conductive powders are metals or conductive non-metals or metal plated non-metals. The micron conductive fibers may be metal fiber or metal plated fiber. Further, the metal plated fiber may be formed by plating metal onto a metal fiber or by plating metal onto a non-metal fiber. Any platable fiber may be used as the core for a non-metal fiber. Superconductor metals may also be used as micron conductive fibers and/or as metal plating onto fibers in the present invention.

Abstract: This invention provides a rotary electric machine with a high productivity/maintainability. Since the shaft portion 43 or the stepwise drawn portion is formed with a flat face 47 perpendicular to the rotational axis, when the magnetic poles 42 are bonded to the rotor 40, an accurate gap control can be achieved by applying a certain pressure to the magnetic poles with a jig or the like using the perpendicular flat face 47 as reference, or by controlling the distance from the perpendicular flat face 47.

Abstract: MEMS devices (100) and methods for forming the devices have now been provided. In one exemplary embodiment, the MEMS device (100) comprises a substrate (106) having a surface, an electrode (128) having a first portion coupled to the substrate surface, and a second portion movably suspended above the substrate surface, and a stress-release mechanism (204) disposed on the electrode second portion, the stress-release mechanism (204) including a first slot (208) integrally formed in the electrode. In another exemplary embodiment, the substrate (106) includes an anchor (134, 136) and the stress-release mechanism 222 is formed adjacent the anchor (134, 136).

Abstract: An ultrasonic motor includes an annular stator, a rotor, a rectangular parallelepiped multilayer piezoelectric transducer, a support shaft, three transducers with drivers, a holder for holding the transducers with an elastic plate therebetween, and a leaf spring for urging the holder. The holder having the transducers is inserted into transducer attaching holes arranged at positions where the circumference of the stator is divided into three parts in a state wherein the holder is urged by the leaf spring from the back of the holder. The leaf spring abuts and urges the drivers of the transducer against a hardwearing ring fixed to the outer circumference of the rotor on the side of the internal circumference of the stator. When the transducer is driven so as to excite an elliptical movement produced in the drivers by combining a bending standing-wave vibration with a longitudinal vibration, the rotor is rotated relative to the stator.

Abstract: A driving device according to the present invention includes an electromechanical transducer secured at its one end to a stationary body, a driving frictional member secured to the other end of the electromechanical transducer, and a moving body which frictionally engage with the driving frictional member. The moving body has a length smaller than the total length of the stationary body, the electromechanical transducer 5 and the driving frictional member. The moving body moves such that it extends beyond the lengthwise end portions of the driving frictional member.

Abstract: A measuring device for measuring in an ear canal includes a probe for insertion into an ear canal having an opening for letting air in to and out of the ear canal, and a pump for providing a pressure above a surrounding atmospheric pressure or below the surrounding atmospheric pressure, the pump including a housing with openings for inlet and/or outlet, where within the housing a piston element having piezo electric properties is disposed, one opening in the pump being operatively connected to the opening in the probe.

Abstract: An acoustic transducer provided with at least one sound source for generating an acoustic centre and a predetermined construction for guiding sound generated by the acoustic centre, which acoustic transducer can be fixed to a fixing wall, wherein the predetermined construction is so designed that, during operation, the generated sound is displaced by the predetermined construction to a displaced acoustic centre at a location that is on the fixing wall (5), when the acoustic transducer (10) is fixed to the fixing wall (5).

Abstract: A piezoelectric actuator is proposed, for example for actuating a mechanical component, and has a multilayered structure of piezoelectric layers with inner electrodes interspersed between them. The inner electrodes contact the outer electrodes on alternating sides and the regions between the outer electrodes are provided with a suitable insulation. The insulation is a layer comprised of a band, for example an adhesive tape, which covers over a predetermined region between the outer electrodes. The adhesive tape is comprised of a precisely measured, prefabricated material and can be stuck, rolled, melted, vulcanized, or sintered in place in a bubble-free manner.

Abstract: A transducer assembly for the megasonic processing of an article and apparatus incorporating the same. The transducer assembly comprises a vibration transmitter having a portion configured to be positioned adjacent to and spaced from the surface of an article so that when fluid is applied to the surface of the article, a meniscus of the fluid forms between the surface of the article and the portion of the vibration transmitter. The transducer assembly also comprises a transducer coupled to the vibration transmitter, where the transducer can oscillate to propagate megasonic energy through the vibration transmitter and through the meniscus of the fluid. In one embodiment, the transducer is located within an enclosed space and at least one passageway is provided for flowing a gas in and/or out of the enclosed space. In an another embodiment, the portion of the vibration transmitter includes an elongated edge that is positioned close to and generally parallel to a surface of the article.

Abstract: An electrical component includes a base having ceramic layers and internal electrodes between at least some of the ceramic layers. The electrical component also includes an external electrode on a face of the base, which contacts at least some of the internal electrodes. The external electrode includes a layer having at least one local minimum.

Abstract: An intermediate film (15, 12, 53) is formed on a substrate (11, 52), a bottom electrode (13, 542) is formed on top of this intermediate film, a ferroelectric film (24) or piezoelectric film (543) is formed on top of this bottom electrode by an ion beam assist method, and a top electrode (25, 541) is formed on top of this ferroelectric film or piezoelectric film. The ferroelectric film or piezoelectric film is formed by PZT, BST or a relaxer material. As a result of the use of an ion beam assist method in the formation of any one of the intermediate film, bottom electrode, ferroelectric film or piezoelectric film, a piezoelectric device or ferroelectric device which has a piezoelectric film or ferroelectric film with an in-plane orientation can be manufactured with good efficiency.

Abstract: The invention provides a piezoelectric actuator having a stack body comprising a plurality of piezoelectric elements, each element having a positive and negative electrode pair which are electrically isolated from one another by the piezoelectric elements, the electrode pairs being arranged in groups of one or more electrode pairs, each group having a conducting arrangement in electrical connection therewith. The piezoelectric actuator further comprises a distribution electrode arrangement for connecting the conducting arrangement to a power supply, in use, wherein the distribution electrode arrangement includes a fuse arrangement. In the event of a short circuit between electrodes of a pair within one of the groups, the fuse arrangement breaks the electrical connection between the power supply and the conducting arrangement.

Abstract: A nickel alloy has 10-20 weight percent of chromium, and 1-4 weight percent of an element selected from the group consisting of aluminum, silicium and both, and can be used in an electrode, for example in an ignition device.

Abstract: In accordance with the invention, a field emission device is made by providing the device electrodes, forming a plurality of corrugated insulating rods with discontinuous coatings of conductive or semiconductive material with low secondary electron emission coefficient, adhering the rods to an electrode, cutting the rods to define corrugated pillars, and finishing the device. The result is low cost production of a field emission device having superior resistance to breakdown in high field operation.

Abstract: A field emission-type electron source has a plurality of electron source elements (10a) formed on the side of one surface (front surface) of an insulative substrate (11) composed of a glass substrate. Each of electron source elements (10a) includes a lower electrode (12), a buffer layer (14) composed of an amorphous silicon layer formed on the lower electrode (12), a polycrystalline silicon layer (3) formed on the buffer layer (14), a strong-field drift layer (6) formed on the polycrystalline silicon layer (3), and a surface electrode (7) formed on the strong-field drift layer (6). The field emission-type electron source can achieved reduced in-plain variation in electron emission characteristics.

Abstract: A cathode-ray tube has an electron gun with a main focusing lens, wherein each electrode comprises a rectangular aperture whose large dimension is along the horizontal axis (Ox) and terminating at its two ends in two identical semi-ellipses of order n that are symmetric with respect to the axis of the gun (Z).

Abstract: An electron gun assembly for a cathode ray tube where the distortion of the electron beam that ordinarily occurs at the periphery of the screen is reduced. The electron gun assembly includes a cathode for emitting electrons, and a plurality of grid electrodes having a control electrode facing the cathode. The grid electrodes sequentially follow the cathode to focus and accelerate the electrons emitted from the cathode. The control electrode has a beam passage hole with a horizontal length H, and a vertical length V being larger than the horizontal length H. The ratio of the vertical to horizontal lengths satisfies the following condition: 1.03?V/H?1.63.

Abstract: Lighting devices are formed of a conductive loaded resin-based material. The conductive loaded resin-based material comprises micron conductive powder(s), conductive fiber(s), or a combination of conductive powder and conductive fibers in a base resin host. The ratio of the weight of the conductive powder(s), conductive fiber(s), or a combination of conductive powder and conductive fibers to the weight of the base resin host is between about 0.20 and 0.40. The micron conductive powders are formed from non-metals, such as carbon, graphite, that may also be metallic plated, or the like, or from metals such as stainless steel, nickel, copper, silver, that may also be metallic plated, or the like, or from a combination of non-metal, plated, or in combination with, metal powders. The micron conductor fibers preferably are of nickel plated carbon fiber, stainless steel fiber, copper fiber, silver fiber, or the like.

Abstract: A field emission device manufactured by the disclosed method and employed in a display unit includes a glass substrate, an emitter electrode formed on the glass substrate, a carbon nanotube (CNT) emitter formed on the emitter electrode, and a gate stack formed around the CNT emitter. Electron beams are extracted from the CNT emitter and the extracted electron beams are focused onto a given position. The gate stack includes a mask layer that covers the emitter electrode provided around the CNT emitter, a gate insulating layer and a gate electrode sequentially formed on the mask layer, a focus gate insulating layer having double inclined planes facing the CNT emitter on the gate electrode, and focus gate electrode coated on the focus gate insulating layer.

Abstract: This invention provides a conductive aluminum film and method of forming the same, wherein a non-conductive impurity is incorporated into the aluminum film. In one embodiment, the introduction of nitrogen creates an aluminum nitride subphase which pins down hillocks in the aluminum film to maintain a substantially smooth surface. The film remains substantially hillock-free even after subsequent thermal processing. The aluminum nitride subphase causes only a nominal increase in resistivity (resistivities remain below about 12 ??-cm), thereby making the film suitable as an electrically conductive layer for integrated circuit or display devices.

Abstract: An apparatus for stabilizing the threshold voltage in an active matrix field emission device is disclosed. The apparatus includes the formation of radiation-blocking elements between a cathodoluminescent display screen of the FED and semiconductor junctions formed on a baseplate of the FED.

Abstract: An optical element having a plate-like shape includes a light-transmitting resin and minute regions. The minute regions are dispersedly distributed in the light-transmitting resin and have a birefringence different from the light-transmitting resin. At least one of the light-transmitting resin and the minute regions contains at least one luminescent material. The thus arranged optical element omits the necessity to separately provide a light emitting means made of a light-transmitting resin containing reflective dots or the like as in a conventional manner, while being capable of allowing light, which results from excitation by incident light in the optical element (through the luminescent material), to be emitted to the outside in the form of linearly polarized light having a certain plane of vibration.

Abstract: An organic EL element has a capping layer formed on a cathode layer. The capping layer contains a pigment that absorbs light that has a wavelength that is different from a wavelength of the light emitted from a light emitting layer, and has a reflectance that is higher at interface in multi-layered structure than a reflectance of the light emitted from the light emitting layer. The capping layer prevents incident light from outside from returning to the outside of the organic EL element.

Abstract: A white light emitting OLED apparatus includes a microcavity OLED device and a light-integrating element, wherein the microcavity OLED device has a white light emitting organic EL element and the microcavity OLED device is configured to have angular-dependent narrow-band emission, and the light-integrating element integrates the angular-dependent narrow-band emission from different angles from the microcavity OLED device to form white light emission.

Abstract: A process for producing organic, electro-optical elements includes the steps of: providing a substrate, applying a first conductive layer, applying at least one layer which includes at least one organic, electro-optical material, applying a second conductive layer, and depositing at least one layer with a vitreous structure.

Abstract: The present invention is to solve the problems of heat release and a metal material corrosion due to fluorine that are arisen in the case of using a film containing fluoroplastics (Teflon®) as a protective film for a light-emitting device. In the present invention, an inorganic film is formed after forming a light-emitting device, and a film containing fluoroplastics is formed thereon for avoiding contact with a metal material for forming the light-emitting device, as a result, a metal material corrosion due to fluorine in the film containing fluoroplastics can be prevented. In addition, the inorganic insulating film has a function of preventing fluorine in the film containing fluoroplastics from reacting to the metal material (barrier property), in addition, the inorganic insulating film is formed of a material having high heat conductivity for releasing heat generated in a light-emitting device.

Abstract: A display device, and a mobile display using the same, that may regulate a ratio of luminance in a lower direction to luminance in an upper direction. The display device has a transparent lower electrode formed on an insulation substrate, an organic emitting layer formed on the lower electrode, and an upper electrode formed on the organic emitting layer, where the upper electrode is comprised of a semi-transparent metal layer and a transparent conductive layer. The ratio of the luminance in the lower direction to the luminance in the upper direction is different according to a thickness of the semi-transparent metal layer.

Abstract: An organic light emitting device includes first and second metal layers used as electrodes on a substrate, an electron transport layer on the first metal layer, a first partition wall insulating the first metal layer from the second metal layer and extending onto the electron transport layer along the first metal layer, a second partition wall on the first metal layer around the electron transport layer, a third partition wall separated from the first partition wall and on the second metal layer, an organic light emitting layer on the electron transport layer, a hole transport layer on the organic light emitting layer and contacting the second metal layer, a protecting layer covering the hole transport layer and extending to the first and second metal layers beyond the second and third partition walls, and sealing materials filling spaces between the protecting layer and the first and second layers.

Abstract: A display device includes a first insulation layer which is disposed on a support substrate with a first refractive index and has a second refractive index which differs from the first refractive index, a second insulation layer which is disposed on the first insulation layer and has a third refractive index which differs from the second refractive index, and a plurality of kinds of color pixels generate lights of different wavelengths, and have a refractive index which is substantially equal to the second refractive index. At least one kind of color pixel is put in contact with the first insulation layer via an opening portion that penetrates the second insulation layer.

Abstract: A display is disclosed. The display comprises a plurality of expandable tubes and a rollable material coupled to the expandable tubes, wherein the plurality of tubes can be expanded and contracted to increase or decrease the size of the display. The user of the expandable display in accordance with the present invention would have the benefit of having a much larger display to work with, and still be able to shrink it for ease of transportation. An added benefit to the user is that the color intensity of such a design is significantly higher than that of current LCD displays. Such displays also have the benefit of not requiring backlighting to operate.

Abstract: A plasma display device provided with a green color phosphor which is charged entirely with a positive potential, adsorbs only limited amounts of water, carbon monoxide, carbon dioxide and hydrocarbon, and not liable to cause chemical reaction thereto. The green color phosphor used is a combination of any of phosphors defined by the general formula of MMg1-xAl11O19:Mnx (where “M” denotes one of La and Ce) having a magnetoplumbite crystal structure, yttrium borate group and yttrium aluminate group phosphors defined by the general formulae of (Y1-a-yGda) BO3:Tby, (Y1-a-yGda) (Ga1-xAlx)3(BO3)4:Tby, (Y1-a-yGda) (Ga1-xAlx)3(BO3)4:Cey, Tby, (Y1-y)3(Ga1-xAlx)5O12:Tby and La Mg1-xAl11O19:Cex, Tbx.

Abstract: A plasma display panel having an electrode structure that can reduce the damaging of a fluorescent layer that generates green light by ion sputtering is disclosed.

Abstract: A compact fluorescent lamp comprises a fluorescent tube having a helical portion on at least a part thereof and turned down in the middle, a pair of tube ends thereof each provided with a discharge electrode, the pair of tube ends juxtaposing with each other in the same direction, a holder for holding the tube ends so as that the fluorescent tube is supported at the one side thereof, a lighting device for supplying a high-frequency power to the fluorescent tube, the lighting device comprising a circuit board facing the other side of the holder and circuit elements mounted on the circuit board, a cover for accommodating the lighting device, the cover opening at both ends and holding the holder at the one opening end, and a cap fixed to the other opening end of the cover for supplying a commercial power to the lighting device by being mounted to a socket of luminaire, wherein a thin tube is protruded from at least one of the tube ends of the fluorescent tube in the cover, and the thin tube is communicated with

Abstract: A metal halide lamp (10) includes a discharge vessel (12) which may be formed of a ceramic material. The vessel defines an interior space (16). An ionizable fill (17) is disposed in the interior space. The ionizable fill includes an inert gas, mercury, and a halide component. The halide component includes an alkali metal halide, an alkaline earth metal halide component, and optionally at least one of a rare earth halide and a Group IIIA halide. The alkaline earth metal halide component includes at least one of a barium halide and a strontium halide. At least one electrode (18, 20) is positioned within the discharge vessel so as to energize the fill when an electric current is applied thereto. The lamp having a wall loading, when energized, which is sufficient to maintain an active tungsten halogen cycle.

Abstract: When a discharge lamp is preheated, impedance of a filament electrode of the discharge lamp is computed. In accordance with the computed impedance, preheating and lighting of the discharge lamp are controlled.

Abstract: A lighting device with night light and human body sensing capability includes a first illumination device, a second illumination device, a sensor and a main body. The first illumination device is designed to illuminate a local predetermined area, and the second illumination device is designed to illuminate an entire predetermined area. The sensor comprises a first sensing member and a second sensing member. The first sensing member is to detect the illumination status of the predetermined area and to activate the first illumination device. The second sensing member is to detect a human body approaching and to activate the second illumination device. The main body is provided with fixtures to dismantle a cover for replacing the second illumination device.

Abstract: The inventors found out that in the case of performing a low gray scale display in which a very small amount of current is supplied to a light emitting element, variations in threshold voltages of driving transistors become notable since the gate-source voltage is low. In view of this, the invention provides a display device in which variations in the threshold voltages of the driving transistors are reduced even in the low gray scale display, and a driving method thereof. According to the invention, a gate-source voltage of the driving transistor is set higher in the low gray scale display than that in the high gray scale display. As one mode to achieve this, different power source lines are provided for the low gray scale display and the high gray scale display and their potentials are set to be different.

Abstract: A self light emitting device having a function of correcting drops in brightness in self light emitting elements in a pixel portion, and capable of displaying a uniform image without brightness irregularities, is provided. A specific test pattern is displayed when an electric power source is connected, brightnesses are detected by photoelectric conversion elements arranged in each pixel, and then stored in a memory circuit. A correction circuit then corrects a first image signal based on portions which are insufficient from standard brightnesses (brightnesses of normal self light emitting elements at the same gray stale, stored in advance), and a second image signal is obtained. Display of an image in a display device is performed in accordance with the second image signal.

Abstract: A control device for multiple lamp currents of a liquid crystal display (LCD) backlight source, comprising an electronic power switch, a transformer, an inverter and an integrated circuit (IC) feedback control module. The transformer has a primary side connected to the electronic power switch and a secondary side having two ends each connected to an end of a set of lamp composed of two lamps. The inverter has three sets of coil connected to the other end of the two sets of lamp. The IC feedback control module is connected between the inverter and the electronic power switch and through which currents flown through the two sets of lamp may be balanced. Meanwhile, the current flown through the inverter is feedback to the IC feedback control module by which a control signal is outputted to the electronic power switch by determining and processing the feedback current, thereby controlling an output signal from the electronic power switch.

Abstract: A multi-lamp driving circuit includes a transformer, a first lamp, a second lamp, a current/voltage converting circuit and a voltage/current converting circuit. Transformer includes a secondary coil having a first output terminal and a second output terminal. Each of the first lamp and the second lamp has one end coupled to the first output terminal. The current/voltage converting circuit is for outputting a voltage according to a first current of the first lamp. The voltage/current converting circuit is for correspondingly generating a second current according to the voltage, wherein the second current is substantially equal to current of the second lamp.

Abstract: A method of controlling synchronous running of a plurality of electronically commutated motors (22, 24, 26), each of which includes a stator having a stator winding (40, 42, 44), a permanent-magnet rotor (28, 30, 32), and at least one arrangement (34, 36, 38), associated with the respective motor, for sensing its rotor position and for generating a rotor position signal (H1, H2, H3). Also provided is an energization arrangement (46), to which the stator windings (40, 42, 44) of the motors are connected. The method includes the steps of detecting occurrence of a predetermined state of the rotor position signals (H1, H2, H3) and, in response thereto, triggering simultaneously commutation of the currents in all the motors.

Abstract: A vibration linear actuating device includes a vibrating linear actuator and a driver (52) for driving actuator. Actuator includes mover having permanent magnet magnetized in a radial direction, stator having coil (2) and facing the permanent magnet, and elastic body for coupling stator to mover. The driver includes driving section having switching element (Q5) for powering coil (2), output controller (27) for controlling switching element (Q5), zero-cross detector (25) for detecting a zero-cross point of back electromotive force generated in coil (2) and having an output to be fed back to the output controller (27). In this structure, the driver powers coil (2) in one way to keep mover vibrating in corporation with elastic body.

Abstract: Stator position feedback controller. A first position monitoring device responds to the position of a stator supported for relative motion by a machine base. A second position monitoring device responds to the position of a carriage with respect to the machine base. An actuator is provided to move the carriage through interaction with the stator. A servo controller responds to the difference in the output of the first and second position monitoring devices to control the position of the carriage with respect to the machine base.

Abstract: A method of and apparatus for controlling an electric machine. The method can include using a controller to detect whether power is present at a first node of the controller, detect whether power is present at a second node of the controller, generate at least one signal based at least in part on the detection, and energize the electric machine using a detected power when the at least one signal indicates power is present at at least one of the first node, the second node, and a combination of the first node and the second node.

Abstract: The power window system moves a window glass in opening and closing directions in response to operation of an opening and closing instruction switch. The power window system includes a measurement device for obtaining an open degree of the window glass and a control device for controlling movement of the window glass in response to operation of the switch. The control device moves the window glass in the closing direction when an open degree obtained by the measurement device is not less than a predetermined degree and in the opening direction when the open degree is less than the predetermined degree.