Abstract: The present invention provides an optical sheet that excels in a light convergence function or a light diffusion function, has excellent brightness increase ratio in the desired angular direction, in particular the front surface direction, and greatly inhibits the side lobe, and a method for manufacturing such an optical sheet with good efficiency and high accuracy. The optical sheet has a substrate that has a first surface having formed thereon a peak-valley portion that converges and scatters light and an optical adjustment portion that differs in an optical property from the substrate. A plurality of the optical adjustment portions are formed at least in part of a non-passage portion for the light in the substrate in the case where a parallel beam falls from the first surface in a direction normal to a surface located opposite the first surface.

Abstract: Providing a method for correcting a data of irregularity of a surface of a body of rotation with an eccentricity included to a data being not affected by eccentricity.

Abstract: To effectively reduce a measurement error in a parameter indicating two-dimensional spatial distribution of a state of polarization generated by variations in retardation of a birefringent prism pair due to a temperature change or other factors, while holding a variety of properties of an imaging polarimetry using the birefringent prism pair. By noting that reference phase functions ?1(x, y) and ?2(x, y) are obtained by solving an equation from each vibration component contained in an intensity distribution I(x, y), the reference phase functions ?1(x, y) and ?2(x, y) are calibrated concurrently with measurement of two-dimensional spatial distribution S0(x, y), S1(x, y), S2(x, y), and S3(x, y) of Stokes parameters.

Abstract: The description relates to a rectenna solar-battery hybrid panels that not only receive electric power transmitted by microwaves after the electric energy has been generated from sunlight, but also gain sunlight energy on the open faces of the panels, and to hybrid solar photovoltaic generation systems. In the rectenna solar-battery hybrid panel, a plurality of solar battery cells for receiving sunlight and converting the sunlight into electricity and a plurality of microwave receiving antenna elements for receiving microwaves transmitted through space are provided. dc electric power is obtained from microwave power, having been received by the microwave receiving antenna elements, being rectified by a rectifying circuit. Stable electric power can be obtained from the output of the solar battery cells and the rectifying circuit.

Abstract: To effectively reduce a measurement error in a parameter indicating two-dimensional spatial distribution of a state of polarization generated by variations in retardation of a birefringent prism pair due to a temperature change or other factors, while holding a variety of properties of an imaging polarimetry using the birefringent prism pair. By noting that reference phase functions ?1(x, y) and ?2(x, y) are obtained by solving an equation from each vibration component contained in an intensity distribution I(x, y), the reference phase functions ?1(x, y) and ?2(x, y) are calibrated concurrently with measurement of two-dimensional spatial distribution S0(x, y), S1(x, y), S2(x, y), and S3(x, y) of Stokes parameters.

Abstract: A loop antenna unit (2), a balanced line (3), and two perturbation elements (4) are formed on a dielectric board (1) by using manufacturing methods, such as printing and etching. The loop antenna unit (2) is formed along the circumference of a circle, and is connected to the balanced line (3). Each of the two perturbation elements (4) is a member in the shape of a tooth which is inclined 45 degrees against a direction of feeding of power via the balanced line (3) and which is projecting from the loop antenna unit (2) in an inward direction toward the center of the loop antenna unit (2). The two perturbation elements (4) are arranged at two opposite points in the loop antenna unit (2) so that they are opposite to each other.

Abstract: A loop antenna unit (2), a balanced line (3), and two perturbation elements (4) are formed on a dielectric board (1) by using manufacturing methods, such as printing and etching. The loop antenna unit (2) is formed along the circumference of a circle, and is connected to the balanced line (3). Each of the two perturbation elements (4) is a member in the shape of a tooth which is inclined 45 degrees against a direction of feeding of power via the balanced line (3) and which is projecting from the loop antenna unit (2) in an inward direction toward the center of the loop antenna unit (2). The two perturbation elements (4) are arranged at two opposite points in the loop antenna unit (2) so that they are opposite to each other.

Abstract: A disk player which can insert and extract a disk, while a disk is being played, into and out of a compact body. During a movement in which one of disk trays is being moved from a disk standby position to a disk playing position, the disk comes into engagement with a disk playing means supporting mechanism to move the disk playing means in a predetermined direction.

Abstract: A flat display apparatus has: a substantially rectangular case in which a flat type display unit for displaying an image is housed; and a stereo speaker device including a left channel speaker section and a right channel speaker section, the speaker sections having substantially same dimensions. The left channel speaker section and the right channel speaker section are configured to enable side faces in the long-side direction of the speaker sections to be attached to and detached from the upper face or the lower face of the case with being laterally arranged in one row, and also to be respectively attached to and detached from the left and right side faces of the case. The length in the long-side direction of the left channel speaker section or the right channel speaker section is equal to or smaller than one half of the length in the long-side direction of the case.

Abstract: A multibeam antenna apparatus is disclosed. The multibeam antenna apparatus includes a main reflector (1), a sub-reflector (2), a focused beam feeder (3), a primary radiator array (5) having a plurality of primary radiators (5a), and a lens array (10) having a plurality of wavefront transformation lenses (10a) corresponding to the plurality of primary radiators (5a), respectively. The lens array (10) can be placed in the vicinity of a front end of the primary radiator array (5). As an alternative, the lens array (10) is placed in an electric wave propagation range of the focused beam feeder (3) where multiple beams which constitute a multibeam are spatially isolated from one another in terms of electric power. Thus the multibeam antenna apparatus can prevent an error from occurring in the orientation of each beam.

Abstract: A power generation satellite has a photoelectric conversion unit for converting sunlight into electric energy, a transmission frequency conversion unit for performing frequency conversion of the electric energy to a microwave, a microwave control unit for controlling the amplitude, the phase, or the amplitude and the phase of the microwave, and a transmitting antenna for radiating the microwave. A plurality of the power generation satellites are placed in space to form a power generation satellite group and an array antenna having the transmitting antennas of the power generation satellites in the power generation satellite group as element antennas is formed.

Abstract: Radiation field distributions of all mirror panels composing a main reflector are measured and held in advance, radiation field distributions of a reflector antenna having the main reflector are measured by transmitting a radio wave from a collimation antenna arranged at a prescribed distance from the reflector antenna to the reflector antenna while changing an attitude of the reflector antenna, complex excitation coefficients of each mirror panel are calculated from the radiation field distributions of the mirror panels, the radiation field distributions of the reflector antenna and the attitudes of the reflector antenna, and mirror surface accuracy of the main reflector is calculated from the complex excitation coefficients of the mirror panels.

Abstract: A multibeam antenna apparatus is disclosed. The multibeam antenna apparatus includes a main reflector (1), a sub-reflector (2), a focused beam feeder (3), a primary radiator array (5) having a plurality of primary radiators (5a), and a lens array (10) having a plurality of wavefront transformation lenses (10a) corresponding to the plurality of primary radiators (5a), respectively. The lens array (10) can be placed in the vicinity of a front end of the primary radiator array (5). As an alternative, the lens array (10) is placed in an electric wave propagation range of the focused beam feeder (3) where multiple beams which constitute a multibeam are spatially isolated from one another in terms of electric power. Thus the multibeam antenna apparatus can prevent an error from occurring in the orientation of each beam.

Abstract: Radiation field distributions of all mirror panels composing a main reflector are measured and held in advance, radiation field distributions of a reflector antenna having the main reflector are measured by transmitting a radio wave from a collimation antenna arranged at a prescribed distance from the reflector antenna to the reflector antenna while changing an attitude of the reflector antenna, complex excitation coefficients of each mirror panel are calculated from the radiation field distributions of the mirror panels, the radiation field distributions of the reflector antenna and the attitudes of the reflector antenna, and mirror surface accuracy of the main reflector is calculated from the complex excitation coefficients of the mirror panels.

Abstract: A power generation satellite has a photoelectric conversion unit for converting sunlight into electric energy, a transmission frequency conversion unit for performing frequency conversion of the electric energy to a microwave, a microwave control unit for controlling the amplitude, the phase, or the amplitude and the phase of the microwave, and a transmitting antenna for radiating the microwave. A plurality of the power generation satellites are placed in space to form a power generation satellite group and an array antenna having the transmitting antennas of the power generation satellites in the power generation satellite group as element antennas is formed.

Abstract: An antenna mirror surface measuring/adjusting apparatus has a plane mirror larger than an aperture surface of said principal reflection mirror and set in parallel with the aperture surface, an actuator for driving a group of mirror surface panels of the principal reflection mirror, and a receiving electric field arithmetic processor for measuring, each time the actuator shifts a position of the mirror surface panel from an initial state of the mirror surface panel of the principal reflection mirror, radio wave signals of radio waves radiated by a transmitter/receiver and reflected back from the plane mirror, obtaining an aperture surface phase distribution in an initial state of the principal reflection mirror by executing an arithmetic process on these measured signals, then gaining configurations of the mirror surface on the basis of the aperture surface phase distribution, and adjusting the mirror surface by the actuator in accordance with the obtained mirror surface configurations.

Abstract: An upper clamping device and a lower clamping device are provided for clamping a double-sided optical disc in cooperation with the upper clamping device. An annular holder is axially movably provided in the upper clamping device. A plurality of spheres are radially movably mounted on the holder. A hub having a slant at a periphery thereof is axially movably provided. When the hub is downwardly moved the slant urges the spheres to engage them with an inside wall of a center hole of the optical disc. Thus, the optical disc is centered.

Abstract: A compatible disc player includes a first tray for carrying an LD arranged to protrude and withdraw from and into a player housing and a second tray for carrying a CD mounted on the first tray, in such a manner as to be movable in directions of the movement of the first tray, and the first and second trays are latched or released to and from each other by use of a latch mechanism in response to a selected one of an LD playing mode and a CD playing mode. The disc player is provided with a single position signal generating switch for sensing positions of the trays, for example, a position in which the trays are completely protruded, and the timing of operation of the switch is changed depending on whether the first tray is moved or the second tray only is moved. Further, the operation of the latch mechanism is controlled by an engagement of a pickup of the player with the latch mechanism.