Nec Corporation

Metawater Co., Ltd.

Yoichiro Mizuno

Fujio Okumura

Koya Takata

Satoshi Kyosuna

Satoshi Komatsu

Tomoyuki Takeshita

Shusaku Hattori

This communication device has a phase-modulation spatial light modulator; and a control unit which causes, during one frame time interval, the phase-modulation spatial light modulator to operate with first and second operation patterns. In a predetermined period within the one frame time interval, the first operation pattern includes a first light transmittable interval during which first signal light can be output, and a first pause interval during which the first signal light cannot be output whereas the second operation pattern includes a second light transmittable interval during which second signal light can be output, and a second pause interval during which the second signal light cannot be output. The first and second light transmittable intervals are each longer than a half of the predetermined period. The second pause interval is present within the first light transmittable interval, and the first pause interval is present within the second light transmittable interval.

Communication device, phase modulation spatial light modulating element, and operation control method

This communication system includes: at least one transmitter which emits signal light; and a receiving device which receives the signal light. The receiving device is provided with: a control unit which generates a phase image on the basis of position information indicating a position of the transmitter, and combines a virtual lens image with the phase image to generate a composite image; a phase-modulation spatial light modulating element which receives the composite image and diffracts and collects signal light; and a detector which receives the diffracted and collected signal light.

Receiving device, communication system, receiving method, and composite image generation program

Growing community of inventors

Tokyo, Japan

Yoichiro Mizuno