Abstract: A vehicle system provided according to one aspect of the present disclosure includes a power transmitter and a vehicle. The power transmitter is placed at one of at least one charge position. The vehicle includes: a power receiver, a capacitor, and a motor. The power receiver wirelessly receives first electric power from the power transmitter, and outputs second electric power deriving from the first electric power. The capacitor stores the second electric power output by the power receiver such that the capacitor is charged from a first voltage Vc1 to a second voltage Vc2. The motor is driven by the second electric power from the capacitor. The vehicle automatically travels a distance Dx along a route from one to a next one of the at least one charge position on the route. The distance Dx satisfies a certain relationship.

Abstract: A power transmitter provided according to one aspect of the present disclosure includes a high-frequency power source device, a power transmitting unit, and a transmitter-side controller. The high-frequency power source device generates high-frequency power. The power transmitting unit includes a power-transmitting coil. The power transmitting unit wirelessly transmits the high-frequency power received from the high-frequency power source device to a power receiver mounted on an electric vehicle. The transmitter-side controller calculates a transmitter usage rate. The transmitter-side controller causes the power transmitting unit to stop power transmission in response to the transmitter usage rate exceeding a predetermined threshold. The transmitter usage rate indicates a rate of time during which the power transmitting unit transmits power to the power receiver per unit time.

Abstract: A vehicle system provided according to one aspect of the present disclosure includes a power transmitter and a vehicle. The power transmitter is placed at one of at least one charge position. The vehicle includes: a power receiver, a capacitor, and a motor. The power receiver wirelessly receives first electric power from the power transmitter, and outputs second electric power deriving from the first electric power. The capacitor stores the second electric power output by the power receiver such that the capacitor is charged from a first voltage Vc1 to a second voltage Vc2. The motor is driven by the second electric power from the capacitor. The vehicle automatically travels a distance Dx along a route from one to a next one of the at least one charge position on the route. The distance Dx satisfies a certain relationship.

Abstract: A power transmitter provided according to one aspect of the present disclosure includes a high-frequency power source device, a power transmitting unit, and a transmitter-side controller. The high-frequency power source device generates high-frequency power. The power transmitting unit includes a power-transmitting coil. The power transmitting unit wirelessly transmits the high-frequency power received from the high-frequency power source device to a power receiver mounted on an electric vehicle. The transmitter-side controller calculates a transmitter usage rate. The transmitter-side controller causes the power transmitting unit to stop power transmission in response to the transmitter usage rate exceeding a predetermined threshold. The transmitter usage rate indicates a rate of time during which the power transmitting unit transmits power to the power receiver per unit time.

Abstract: A radio wave lens antenna device including a semispherical Luneburg lens and a radio wave reflection plate. The radio wave lens antenna device prevents the signal reception sensitivity from being lowered in rain or snow. The radio wave lens antenna device includes a semispherical Luneburg lens 1, a radio wave reflection plate 2 that is larger than the diameter of the lens, an antenna element 3, and a holder 4 that holds the antenna element. The radio wave reflection plate 2 is arranged in an erected state. An ice-snow-water resistant means, which includes a first cover 5 and a second cover 6, prevents rain, snow, and ice from collecting and running off the Luneburg lens.

Abstract: An easy-to-install Luneberg lens antenna device is constituted by combining a hemispherical Luneberg lens and a radio wave reflector. The Luneberg lens antenna device comprises an antenna fixing jig (2), and a fixing means, e.g., a bolt (3), for fixing the radio wave reflector (1b) of the antenna device (1) removably to the antenna fixing jig (2). The reflector (1b) and the antenna fixing jig (2) are previously provided, respectively, with fixing parts for fixing by the fixing means, the antenna fixing jig (2) is fixed to an antenna installing section and the reflector (1b) is fixed to the antenna fixing jig (2) by the fixing means.

Abstract: Lens antenna equipment including a hemispherical Luneberg lens made of dielectric, a reflector which has a size larger than the lens diameter and which is to be provided on a face equivalent to a cross-section made by halving a globular shape of the lens, a primary feed to be arranged at a focus part of the lens, and an arm for holding the primary feed, all of which are unitarily assembled together, wherein the holder of the arm can be turned about an axis that is a perpendicular line passing the center of the lens when the reflector is attached to its installation position in a substantially perpendicular manner with respect to the ground surface, and wherein the primary feed can be moved along the surface of the lens, on a plane that is perpendicular to the axis passing the center of the lens, and on a semicircle centering the axis.

Abstract: Lens antenna equipment including a hemispherical Luneberg lens made of dielectric, a reflector which has a size larger than the lens diameter and which is to be provided on a face equivalent to a cross-section made by halving a globular shape of the lens, a primary feed to be arranged at a focus part of the lens, and an arm for holding the primary feed, all of which are unitarily assembled together, wherein the holder of the arm can be turned about an axis that is a perpendicular line passing the center of the lens when the reflector is attached to its installation position in a substantially perpendicular manner with respect to the ground surface, and wherein the primary feed can be moved along the surface of the lens, on a plane that is perpendicular to the axis passing the center of the lens, and on a semicircle centering the axis.

Abstract: A portable personal computer is provided that includes a main housing having a base and an upper housing erecting on top of the base for containing circuitry of the portable personal computer. The base contains a power supply unit for the computer. The upper housing includes a top end and an inner wall. A display is pivotally attached to the upper housing adjacent the top end of the upper housing such that the display is held against the inner wall of the upper housing in a closed position. A detachable keyboard is provided which has a top row and a bottom row for inputting data into the portable personal computer. The keyboard is mounted onto the portable personal computer and covers the display in the closed position such that the computer constitutes an integrated entity. The keyboard is removed from the computer in an open position for operation. The display is exposed when the keyboard is removed from the computer. The display can swing away from the inner wall of the upper housing in the open position.