Abstract: A display device includes: a display panel including a sensor unit configured to detect a touch operation; a first control unit configured to supply a first signal to the display panel; and a second control unit configured to calculate touch information related to the touch operation and to supply the touch information to the first control unit. The first control unit includes: a signal generator configured to generate the first signal based on an image signal supplied from an external image signal supply source; and an overdrive circuit configured to perform a process of increasing an amplitude of the first signal generated by the signal generator. The overdrive circuit is actuated based on the touch information from the second control unit. The first control unit, in response to the actuation of the overdrive circuit, supplies the first signal having the amplitude increased by the overdrive circuit to the display panel.

Abstract: A display device is provided with: a display portion including a plurality of scanning lines, a plurality of data lines, and a plurality of pixel circuits; a scanning line drive circuit; and a data line drive circuit. The level of a data voltage applied to the data line decreases when a frame frequency is switched higher, and increases when the frame frequency is switched lower. This can prevent a display flicker when the frame frequency is switched. The level of the data voltage may change when the frame frequency is switched, and may return to its initial level over a plurality of frame periods. The timing of the control signal used to drive the display portion may change in accordance with the frame frequency to cause the length of the charging period of the pixel circuit to change in accordance with the frame frequency.

Abstract: A tool stocker includes main stockers for holding a plurality of tools detachably mounted on a main spindle for machining a workpiece, an auxiliary stocker for holding and transferring tools to and from the main stockers, and a tool transfer mechanism for transferring tools between the main stockers and the auxiliary stocker. The auxiliary stocker includes a plurality of tool pods for removably supporting the tools therein, a rail in sliding engagement with outer surfaces of the tool pods, a chain for moving the tool pods in sliding engagement with the rail, and a motor for actuating the chain. The rail has a recess defined therein in alignment with the tool transfer mechanism, such that the tools transferred by the tool transfer mechanism pass through the recess.

Abstract: A machine tool has a Z table sliding in the Z direction in a horizontal plane, a support body provided on the Z table and sliding in the vertical direction, a rotation arm supported at the support body and endlessly rotatable in a vertical plane facing work, an arm motor for rotating the rotation arm, a processing spindle rotatably supported and placed at a position of a distance R from the center C of rotation of the rotation arm, and a spindle motor for rotating the processing spindle.

Abstract: A tool stocker includes main stockers for holding a plurality of tools detachably mounted on a main spindle for machining a workpiece, an auxiliary stocker for holding and transferring tools to and from the main stockers, and a tool transfer mechanism for transferring tools between the main stockers and the auxiliary stocker. The auxiliary stocker includes a plurality of tool pods for removably supporting the tools therein, a rail in sliding engagement with outer surfaces of the tool pods, a chain for moving the tool pods in sliding engagement with the rail, and a motor for actuating the chain. The rail has a recess defined therein in alignment with the tool transfer mechanism, such that the tools transferred by the tool transfer mechanism pass through the recess.

Abstract: The present invention relates to an optical signal processor which can perform favorable optical signal processing even when there are environmental changes and the like. The optical signal processor inputs light emitted from an end face of an optical fiber, subjects the inputted light to processing according to its wavelength, and outputs the processed light so as to make it incident on the end face of the optical fiber; and comprises optical systems, a diffraction grating device, mirror reflectors, an optical path turning part, and a monitor part. The optical path turning part transmits therethrough a part of the incident light and reflects at least a part of the remnant. The optical system monitors the light transmitted through the optical path turning part.

Abstract: A machine tool (10) has a Z table (18) sliding in the Z direction in a horizontal plane, a support body (22) provided on the Z table (18) and sliding in the vertical direction, a rotation arm (32) supported at the support body (22) and endlessly rotatable in a vertical plane facing work (W), an arm motor (34) for rotating the rotation arm (32), a processing spindle (36) rotatably supported and placed at a position of a distance R from the center C of rotation of the rotation arm (32), and a spindle motor (38) for rotating the processing spindle (36).

Abstract: An optical signal processor, capable of eliminating design change of lens optical systems, it is fabricating by selecting one or more optical waveguides, each having a mode field diameter such that a desired band width of the transmission characteristics of the whole optical signal processor with respect to the light beam are selected as the input and output optical waveguides. When one optical waveguide is selected, the selected optical waveguide is applied as a common optical waveguide corresponding to both input and output optical waveguides. When two optical waveguides are selected, one is applied to the input optical waveguide and the other is applied to the output optical waveguide.

Abstract: To provide an optical signal processor which can perform favorable optical signal processing even when there are environmental changes and the like. An optical signal processor 1 inputs light emitted from an end face of an optical fiber 11, subjects the inputted light to processing according to its wavelength, and outputs the processed light so as to make it incident on the end face of the optical fiber 11; and comprises optical systems 111 to 113, a diffraction grating device 120, reflecting mirrors 131 to 133, an optical path turning part 140, and a monitor part 150. The optical path turning part 140 transmits therethrough a part of the incident light and reflects at least a part of the remnant. The optical system 113 monitors the light transmitted through the optical path turning part 140.

Abstract: An optical signal processing apparatus has a diffraction grating element, first condenser lens, Faraday rotation elements, polarization beam splitter, ?/2 plate, second condenser lens, third condenser lens, and diffraction grating element. The magnitude of a magnetic field of each of the Faraday rotation elements is controlled on the basis of an externally input control signal. The rotation angle of the plane of polarization of signal light is set to 0 or ?/2 in accordance with the magnitude of the magnetic field. Each Faraday rotation element receives signal light having wavelengths ?1 to ?4, which has arrived from the first condenser lens, and outputs the signal light as a polarized light component in the first azimuth (parallel to the z-axis direction) or second azimuth (parallel to the y-axis direction).

Abstract: The present invention is related to a method of fabricating an optical signal processor capable of eliminating design change of lens optical systems and so on. The optical signal processor includes input and output optical waveguides, and further includes a first lens optical system, a spatial wavelength-dividing element, a second lens optical system, and a spatial optical modulator, respectively arranged on an optical path between the input and output optical waveguides. For fabricating the optical signal processor, one or more optical waveguides each having a mode field diameter such that a desired band width of the transmission characteristics of the whole optical signal processor with respect to the light beam are selected as the input and output optical waveguides. When one optical waveguide is selected, the selected optical waveguide is applied as a common optical waveguide corresponding to both input and output optical waveguides.

Abstract: An object of the present invention is to provide a fixing structure for an optical element, which structure enables easy adjustment of a direction of the optical element when the optical element is fixed to a substrate. In order to achieve this object, a fixing member 31 made of metal is fixed to a substrate such that the fixing member holds an optical element therein and the bottom surface of the fixing member is spherical so that the spherical bottom surface touches the edge of the opening of a fixing portion on the substrate. The fixing member holds the optical element. A part of the surface of the fixing member is spherical such that the spherical part of the surface touches the edge of the opening of a fixing portion on the substrate. An optical device in which an optical element is fixed to a substrate with the fixing member mentioned above is also provided.

Abstract: This invention provides an optical signal processing apparatus capable of size reduction. When signal light with multiple wavelengths &lgr;1 to &lgr;4 is collimated by and output from a fiber collimator, the signal light components with multiple wavelengths &lgr;1 to &lgr;4 are diffracted by a diffraction grating at diffraction angles corresponding to the wavelengths and separated for the respective wavelengths. The separated signal light components of the respective wavelengths are output to spatially different optical paths. The signal light components having the wavelengths &lgr;n are deflected at their optical paths by prisms to increase the optical path interval and then input to fiber collimators.

Abstract: An object of the present invention is to provide a fixing structure for an optical element, which structure enables easy adjustment of a direction of the optical element when the optical element is fixed to a substrate. In order to achieve this object, a fixing member 31 made of metal is fixed to a substrate such that the fixing member holds an optical element therein and the bottom surface of the fixing member is spherical so that the spherical bottom surface touches the edge of the opening of a fixing portion on the substrate. The fixing member holds the optical element. A part of the surface of the fixing member is spherical such that the spherical part of the surface touches the edge of the opening of a fixing portion on the substrate. An optical device in which an optical element is fixed to a substrate with the fixing member mentioned above is also provided.

Abstract: An optical signal processing apparatus has a diffraction grating element, first condenser lens, Faraday rotation elements, polarization beam splitter, &lgr;/2 plate, second condenser lens, third condenser lens, and diffraction grating element. The magnitude of a magnetic field of each of the Faraday rotation elements is controlled on the basis of an externally input control signal. The rotation angle of the plane of polarization of signal light is set to 0 or &lgr;/2 in accordance with the magnitude of the magnetic field. Each Faraday rotation element receives signal light having wavelengths &lgr;1 to &lgr;4, which has arrived from the first condenser lens, and outputs the signal light as a polarized light component in the first azimuth (parallel to the z-axis direction) or second azimuth (parallel to the y-axis direction).

Abstract: This invention provides an optical signal processing apparatus capable of size reduction. When signal light with multiple wavelengths &lgr;1 to &lgr;4 is collimated by and output from a fiber collimator, the signal light components with multiple wavelengths &lgr;1 to &lgr;4 are diffracted by a diffraction grating at diffraction angles corresponding to the wavelengths and separated for the respective wavelengths. The separated signal light components of the respective wavelengths are output to spatially different optical paths. The signal light components having the wavelengths &lgr;n are deflected at their optical paths by prisms to increase the optical path interval and then input to fiber collimators.