Minebea Mitsumi Inc.

Naoki Tsuji

Masaaki Fujii

Shigemi Masuda

An antenna device includes an array antenna; a phase adjuster; and circuitry configured to acquire, based on a second position, an elevation angle of a projected position that is obtained by projecting a first position of a marker included in an image onto a second plane including a first axis and a third axis, the elevation angle being relative to the third axis of the second plane. The circuitry is configured to control the phase adjuster such that a direction of a beam, emitted by the array antenna based on retrieved phase data, defines the elevation angle for the second plane, the phase data relating to elevation angles that are within a predetermined included angle range.

Antenna device, feed system, feed device, and feed method

To provide a power supply system, a power device, and a power method capable of wireless power supply with a simple configuration. A power supply system includes a first infrared output unit provided on a first object, the first infrared output unit having a first directivity configured to output a first infrared ray in a first direction in which a second object that relatively moves with respect to the first object is situated, the first infrared output unit being configured to output the first infrared ray, a reflector provided on the second object, the reflector being configured to reflect the first infrared ray by retroreflection, a second infrared output unit provided on the second object, the second infrared output unit having a second directivity configured to output a second infrared ray in a second direction in which the first object that relatively moves is situated, the second infrared output unit being configured to output the second infrared ray by using power received by wireless power supply, and a power supply provided on the first object, the power supply being configured to, in a case of receiving a reflected infrared ray of the first infrared ray reflected by the reflector or in a case of receiving the second infrared ray, output a beam in an arrival direction of the reflected infrared ray or the second infrared ray.

Power supply system, power supply device, and power supply method

A degradation-determination system includes a volume change detecting unit configured to detect a volume change of a lithium-ion battery, a capacity change detecting unit configured to detect a capacity change of the lithium-ion battery, and a charge control unit configured to control charge of the lithium-ion battery. The charge control unit is configured to determine that the lithium-ion battery is in a state of degradation, upon occurrence of a condition in which volume expansion of the lithium-ion battery is detected by the volume change detecting unit, in conjunction with a condition in which a decrease in a capacity of the lithium-ion battery is not detected by the capacity change detecting unit.

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Shizuoka, Japan

Naoki Tsuji