Abstract: A radar apparatus forming a series-feed array-antenna includes an array antenna having transmission/reception antennas, and each antenna includes a plurality of antenna elements arrayed with feed-lines to be series-connected each other. A calibration line is disposed between the transmission antenna and the reception antenna via a switch which connects or disconnects the calibration line. The signal having a phase shift is transmitted via the calibration line when the switch connects the calibration line and an amount of phase shift from the signal transmitted via the calibration line is calculated based on a reference phase at the transmission antenna thereby calibrating the phase shift.

Abstract: An artificial sunlight radiation device (10) includes a xenon light source (9), a condensing element (2), a tapered coupler (3), an optical filter (4), a light guide plate (16), a light extracting member (17), and a side-surface reflection member (15) that is provided at one or more side end surfaces of the light guide plate (16), reflects a portion of the light output from the light guide plate (16), and directs the portion of the light toward a radiation surface.

Abstract: A light source device (10) according to the present invention includes a first light source (1) and a first condensing member (2) that has a first opening (24) and that outputs output light from the first light source (1) through the first opening (24). The first condensing member (2) is constituted of a front condensing member (2a) that includes the first opening (24) and a rear condensing member (2b) that does not include the first opening (24). The rear condensing member (2b) is detachable from the first condensing member (2).

Abstract: A simulated sunlight irradiation apparatus of the present invention (100a) includes: a light guide plate (5) having an irradiation surface and a counter surface opposite to the irradiation surface; and a light absorbing member (8) which is provided on at least one of an irradiation surface side and a counter surface side of the light guide plate (5) and absorbs light in a predetermined wavelength region.

Abstract: The antenna includes a first ground plate, a first dielectric substrate formed on the first ground plate, a transmission line made of a conductive material formed on the first dielectric substrate, and a plurality of antenna elements electromagnetically coupled to the transmission line. The transmission line is constituted of at least one first line serving as a resonator having a resonator length equal to (2n?1)/2 times (n being a positive integer) a guide wavelength of the transmission line and a plurality of second lines each having an electrical length longer than half the guide wavelength, the first and second lines being disposed alternately at predetermined intervals. Each of the antenna elements is electromagnetically coupled to a corresponding one of the second lines.

Abstract: In a simulated sunlight irradiation apparatus (100), at least one of at least one optical filter (4) and at least one optical filter (6) is provided so as to be switchable with another optical filter (14 or 16) having a transmittance characteristic that is different from a transmittance characteristic of the at least one of the at least one optical filter (4) and the at least one optical filter (6).

Abstract: To provide an abrasive water jet machining apparatus in which the machining accuracy and machining efficiency is improved by improving the flowability of an abrasive through a nozzle. An abrasive water jet machining apparatus performs machining by directing an abrasive water jet at a workpiece, the abrasive water jet being composed of a mixture of a high-pressure processing fluid with an abrasive. The machining apparatus includes: a nozzle that directs the abrasive water jet; a high-pressure water supply device that supplies the processing fluid to the nozzle; and an abrasive supply device that supplies the abrasive to the processing fluid. The abrasive is composed of a coated abrasive, the coated abrasive being produced by coating a surface of an abrasive material composed of abrasive grains with a water-repellent material or flow promoting material. The abrasive supply device 8 supplies the coated abrasive to the nozzle.

Abstract: An antenna cover (1) for a radar (2) for a vehicle has a rectangular parallelepiped shape, having a flat cover top (10) that faces a microstrip antenna (21a, 21b) of the radar (2) and a sidewall (11) that covers the microstrip antenna (21a, 21b) sideways. The sidewall (11) is located out of the range where the electromagnetic waves to be received by the microstrip antenna (21a, 21b) are directly received. An inner face (11a) of the sidewall (11) is at a right angle to the cover top (10). An outer face (11b) of the sidewall (11) is at a constant angle ? larger than 0 degree but smaller than 90 degrees, to the inner face (11a) of the sidewall (11). The sidewall (11) is structured such that its thickness increases toward the side where the microstrip antenna (21a, 21b) is present.

Abstract: A radar system includes an arithmetic processing unit, which sends a warning command to a warning device when a local minimum point of the intensity of the reflected wave from a target within a predetermined detection range is detected. By determining whether it is necessary to send a warning command based on whether there is a local minimum point of the intensity within the detection range, it is made possible to determine whether it is necessary to send a warning command more quickly as compared to the conventional system.

Abstract: A radar system includes an arithmetic processing unit, which calculates the second derivative of the intensity of a reflected wave and determines whether a target is an upper structure or a vehicle, based on the second derivative. Alternatively, the arithmetic processing unit decomposes the waveform of the intensity of the reflected wave into frequency components and determines whether the target is an upper structure or a vehicle, based on the intensity of a predetermined frequency component.

Abstract: An obstacle detection device includes; a primary device that determines the presence or absence of the target object on the basis of a comparison between the transmitted wave and the reception wave; a storage device that, when it is determined that the object is present, acquires a reception power of the reception wave at a control period determined beforehand, and stores the reception power as reception power time series data; a secondary device that determines whether a value relating to a time series change pattern of the data falls within a predetermined range set beforehand on the basis of phase interference, of the reception wave, that depends on a height of the object from a road; and a output device that determines the object to be an obstacle and outputs a result of this determination, when it is determined that the value relating to the pattern falls within the range.

Abstract: A radar system includes radars and a controller. The controller controls waveform patterns of the radars. As a signal processing unit of each of the radars receives an instruction from the controller, the signal processing unit selects a frequency modulation pattern of a VCO between an FM-CW mode and a CW mode stored in a waveform memory to perform mode switching, and then outputs a radio wave from a transmission antenna. Then, the controller instructs each signal processing unit for a frequency modulation pattern of each radar or an output timing of each pattern so that a time, at which continuous wave signals output from the radars have the same frequency, is not continuous.

Abstract: The antenna includes a first ground plate, a first dielectric substrate formed on the first ground plate, a transmission line made of a conductive material formed on the first dielectric substrate, and a plurality of antenna elements electromagnetically coupled to the transmission line. The transmission line is constituted of at least one first line serving as a resonator having a resonator length equal to (2n?1)/2 times (n being a positive integer) a guide wavelength of the transmission line and a plurality of second lines each having an electrical length longer than half the guide wavelength, the first and second lines being disposed alternately at predetermined intervals. Each of the antenna elements is electromagnetically coupled to a corresponding one of the second lines.

Abstract: A radar apparatus forming a series-feed array-antenna includes an array antenna having transmission/reception antennas, and each antenna includes a plurality of antenna elements arrayed with feed-lines to be series-connected each other. A calibration line is disposed between the transmission antenna and the reception antenna via a switch which connects or disconnects the calibration line. The signal having a phase shift is transmitted via the calibration line when the switch connects the calibration line and an amount of phase shift from the signal transmitted via the calibration line is calculated based on a reference phase at the transmission antenna thereby calibrating the phase shift.

Abstract: An optical integrated unit according to the present invention is an optical integrated unit, including: a semiconductor laser acting as a light source; at least one light-receiving element; a light-separating section for separating light emitted by the semiconductor laser from light reflected by an optical disc and for reflecting the light reflected by the optical disc so that the light reflected by the optical disc is directed to the light-receiving element; and a support substrate, wherein a second support substrate has a concave shape, the light-separating section is constituted of at least three prisms, the prisms positioned at both ends of the light-separating section are respectively attached to two protruding sections of the concave shape of the second support substrate, and the light-receiving element is attached to the light-separating section via a cover glass.

Abstract: According to one embodiment, a memory device includes a semiconductor memory and a controller that controls the semiconductor memory. The controller includes a first command issuing module, second command issuing module, error correction module and control module. The first command issuing module is configured to issue a read command to the semiconductor memory. The second command issuing module is configured to issue a first command instructing a process that does not involve reading data from the semiconductor memory independently from the first command issuing module to the semiconductor memory. The error correction module is configured to correct an error contained in data supplied from the semiconductor memory. The control module is configured to control the error correction module, first command issuing module and second command issuing module.

Abstract: A roller 58 is rotatably held by an end portion of an eccentric support roller shaft 50 so that the roller 58 contacts with an inner periphery circular side surface of a rotor 40. Accordingly, a rotational resistance while the rotor 40 is eccentrically rotated can be decreased in comparison with a configuration in which an internal gear formed in an inner periphery of a rotor and an external gear formed in an eccentric shaft interlock each other. Thus, the rotating shaft 52 can be efficiently driven to rotate when a pressure difference is small and energy for rotating the roller 58 is small.

Abstract: A radar system includes: a transmission antenna outputting transmission signals having multiple frequencies; multiple reception antennas receiving reflected waves of the transmission signals, reflected from an object; a mixer mixing the transmission signals with reception signals received by the reception antennas to generate beat signals; and a signal processing unit detecting Doppler frequency by analyzing frequencies of the beat signals, detecting phase information of the Doppler frequency for each of combinations of the reception antennas and the transmission signal frequencies, constructing a matrix having the pieces of phase information arranged in a predetermined order with respect to the reception antennas and the frequencies of the transmission signals, obtaining a correlation matrix from the matrix and its complex conjugate transposed matrix, and estimating at least one of a distance, direction and relative velocity of the object based on the correlation matrix.

Abstract: A pulse radar apparatus, which includes transmitting means for transmitting a pulsed wave and receiving means for receiving a reflected wave of the transmitted wave transmitted by the transmitting means and calculates at least one of a relative distance and a relative speed with respect to an object based on a relationship between the wave transmitted by the transmitting means and the wave received by the receiving means, is provided with pulse width varying means for varying a pulse width of the wave transmitted by the transmitting means according to a position of a required detection range where calculation of the at least one of the relative distance and the relative speed with respect to the object is required.

Abstract: A radar system includes radars and a controller. The controller controls waveform patterns of the radars. As a signal processing unit of each of the radars receives an instruction from the controller, the signal processing unit selects a frequency modulation pattern of a VCO between an FM-CW mode and a CW mode stored in a waveform memory to perform mode switching, and then outputs a radio wave from a transmission antenna. Then, the controller instructs each signal processing unit for a frequency modulation pattern of each radar or an output timing of each pattern so that a time, at which continuous wave signals output from the radars have the same frequency, is not continuous.