Abstract: A display board (101) configured to include a first display element (102A) that displays a first pixel that is one pixel of a screen of the touch panel and a second display element (102B) that displays a second pixel that is other one pixel of the screen; a touch sensor (106, 201, 203) configured to detect contact with the screen; a planar antenna (105) configured to be provided at a position on a front surface side of the screen with respect to the display board and the touch sensor, the position not facing the first display element and the second display element when viewed from above the screen; and a control unit configured to communicate to the planar antenna via a space between the first display element and the second display element.

Abstract: A communication apparatus including a transmitter that transmits modulated light modulated by a modulation part of a spatial light modulator as a first spatial light signal, a receiver that receives a second spatial light signal transmitted from a communication target, a detector that detects a physical quantity related to oscillation of the own apparatus, and a communication control unit that acquires the physical quantity detected by the detector and information on oscillation of the communication target included in the second spatial light signal, analyzes a state of the oscillation of the communication target using the information on the oscillation of the communication target and the physical quantity, and sets a transmission condition of the first spatial light signal in the transmitter according to the analyzed state of the oscillation of the communication target.

Abstract: A reception device includes a ball lens, a first light receiver including a first annular body surrounding a periphery of the ball lens, and light receiving units including first light receiving elements disposed on an inner peripheral side surface of the first annular body, and a second light receiver including a second annular body surrounding an outer periphery of the first annular body and second light receiving elements disposed on an outer peripheral side surface of the second annular body. The first light receiving elements are disposed on the inner peripheral side surface of the first annular body with the light receiving part facing the ball lens. The second light receiving elements are disposed on the outer peripheral side surface of the second annular body with the light receiving part facing in a direction opposite to the ball lens.

Abstract: A transmitter includes a light source including a first light emitter and a second light emitter, a spatial light modulator including a modulation part that modulates light emitted from the light source, a first mirror that is arranged on a first optical path of the modulated light modulated by the modulation part and reflects the modulated light toward a first projection direction, and a second mirror that is arranged on a second optical path of the modulated light modulated by the modulation part and reflects the modulated light toward the first projection direction.

Abstract: Transmitter that includes a light source, a spatial light modulator including a modulation part that modulates illumination light emitted from the light source, a first mirror that is arranged on a first optical path of the modulated light modulated by the modulation part and reflects the modulated light toward a first projection range, and a second mirror that is arranged on a second optical path of the modulated light modulated by the modulation part and reflects the modulated light toward a second projection range around the first projection range. The first mirror and the second mirror are disposed at positions deviated from an optical path of unnecessary light included in the modulated light.

Abstract: A phase shifter includes: transmission channels that have one ends connected to an antenna element, are formed with a gap, and have different lengths; movable electrodes that are provided to the gaps, and move in a direction parallel to the transmission channels to be switched to an on-state in which the movable electrode overlaps transmission channel end portions on both ends of a corresponding one of the gaps and is inductively coupled with the transmission channel end portions and to an off-state in which the movable electrode does not overlap at least one of the transmission channel end portions on both ends of the corresponding gap and is not inductively coupled with the at least one of the transmission channel end portions; and MEMS mechanisms that change a phase difference by switching the movable electrodes to one of the on-state and the off-state to switch lengths of the transmission channels.

Abstract: A light-receiving device that includes a condenser lens that condenses a spatial optical signal, a beam control element that emits an optical signal derived from the spatial optical signal condensed by the condenser lens toward a predetermined region, and a light-receiving element that is disposed with a light-receiving portion facing the predetermined region and receives the optical signal.

Abstract: Please delete the Abstract of the Disclosure, and replace it with the following: Provided are a liquid crystal antenna capable of adapting a transmission/reception direction of a radio wave to 360° in a horizontal direction and reducing a size, a weight, and cost, and a method for manufacturing the liquid crystal antenna. A liquid crystal antenna of the present example embodiment includes a curved liquid crystal panel and is a phased array type, and the liquid crystal panel includes a liquid crystal layer and a plurality of antenna elements that transmit and receive signals having phases modulated by a variable dielectric constant element including the liquid crystal layer. The liquid crystal layer may be curved.

Abstract: To provide an antenna capable of accelerating beamforming. The antenna includes a metasurface with an opening part that receives electromagnetic waves and a MEMS mechanism configured to change a shape of the opening part by operating a moveable member with respect to the opening part of the metasurface.

Abstract: In order to efficiently receive spatial light without using a condensing lens, this light receiving device comprises: a first light guide body that has at least a first light receiving surface and a first light emission end and guides, in an oriented manner, signal light entering from the first light receiving surface to the first light emission end; a second light guide body that has at least a second light receiving surface and a second light emission end, the second light receiving surface being connected to the first light emission end, and that guides, in an oriented manner, signal light entering from the second light receiving surface to the second light emission end; and a light receiver that has a light receiving part connected to the second light emission end and that converts the signal light received by the light receiving part to an electrical signal.

Abstract: Please delete the Abstract of the Disclosure, and replace it with the following: A light-receiving device that includes a substrate which transmits light in the wavelength band of a spatial light signal to be received, an optical antenna which is disposed on a first surface of the substrate, which receives the spatial light signal, which optically guides signal light derived from the spatial light signal along the in-plane direction of the substrate toward an emission end, and which outputs the signal light from the emission end toward the substrate, and a light-receiving element which is disposed such that a light-receiving surface faces a second surface of the substrate opposite from the first surface, and which receives, at the light-receiving surface, the signal light output from the optical antenna.

Abstract: Provided is a transmission device that includes a light source that includes emitters, a spatial light modulator that includes a modulation part in which modulation regions are set, a concentrator that converts modulated light modulated in the modulation regions into parallel light, a projector that is disposed at a subsequent stage of the concentrator and includes at least one reflector including a curved mirror having a reflection surface of a curved shape having a curvature according to a projection angle of projection light transmitted as a spatial light signal and a rotator rotatably supporting the curved mirror, and a controller that controls the rotator to adjust a reflection direction of the curved mirror for each of the reflectors, sets a phase image used for spatial light communication in the modulation regions, and controls the plurality of emitters such that each of the modulation regions is irradiated with light.

Abstract: A transmitter including a light source, a spatial optical modulator including a modulation part in which a phase image according to a spatial optical signal to be transmitted is set and irradiated with light emitted from the light source, an optical diffuser that diffuses modulated light modulated by the modulation part of the spatial optical modulator, and a ball lens that enlarges and projects the modulated light diffused by the optical diffuser.

Abstract: A projection device a includes a light source that emits parallel light, a spatial light modulator that has a modulation part that modulates a phase of the parallel light emitted from the light source, a liquid crystal projection lens that includes a liquid crystal region on which modulated light modulated by the spatial light modulator is incident and that projects the modulated light in a lens region dynamically formed in the liquid crystal region as projection light, and a control unit that causes the lens region to be formed at a desired position in the liquid crystal region of the liquid crystal lens, sets a phase image corresponding to the projection light projected toward a projection target, to the modulation part of the spatial light modulator, and controls the light source to emit the parallel light toward the modulation part to which the phase image is set.

Abstract: Provided is a light receiving device includes a ball lens and a light receiver disposed in a condensing region of the ball lens. The light receiver includes a light receiving element array in which light receiving units each of which includes a light receiving element and an amplifier circuit associated with the light receiving element are disposed in an array, and a selection circuit that selects a light receiving unit included in the light receiving element array.

Abstract: Provided is a light receiving device including a ball lens, a concave lens that is arranged in a light collecting region of the ball lens, a reflection element that is arranged in association with the concave lens and has a reflection surface that diffracts and reflects an optical signal collected by the concave lens, and a light receiving element that is arranged in association with the reflection element and receives the optical signal diffracted and reflected by the reflection surface of the reflection element.

Abstract: A transmitter that includes a light source that includes a plurality of emitters, a spatial light modulator that includes a modulation part in which a plurality of modulation regions associated with each of a plurality of the emitters is set, curved mirrors that have a curved reflecting surface having a curvature relevant to a projection angle of projection light transmitted as a spatial light signal and disposed in association with each of a plurality of the modulation regions in such a way that, on the reflecting surface, modulated light modulated in each of a plurality of the modulation regions set in the modulation part of the spatial light modulator is reflected, and a light shielding band that is disposed between the spatial light modulator and the curved mirrors and removes an unnecessary light component included in the modulated light modulated in each of a plurality of the modulation regions.

Abstract: A receiver includes a light receiver including a light-receiving ring including a plurality of light-receiving elements arranged in an annular shape and a light-receiving plate including at least one light-receiving element, a ball lens placed on a ring formed by the light-receiving ring, and a reflector arranged in a gap formed between the light-receiving ring and the light-receiving plate. The plurality of light-receiving elements constituting the light-receiving ring are arranged with a light-receiving surface facing an inner side of the ring formed by the light-receiving ring. The light-receiving element included in the light-receiving plate is disposed inside the ring formed by the light-receiving ring with a light-receiving surface facing the ball lens placed on the light-receiving ring.

Abstract: A receiver includes a ball lens, a light receiving element array including a plurality of light receiving elements arranged around the ball lens, and a light guide including a plurality of reflection units that guide optical signals concentrated by the ball lens toward the light receiving elements. Each of the reflection units includes a first reflector associated with one of the plurality of light receiving elements and having reflecting surfaces formed on inner side surfaces tapered from the ball lens toward the light receiving element, and a second reflector disposed inside the first reflector and formed by combining double-sided mirrors having reflecting surfaces parallel to the reflecting surfaces of the first reflector.

Abstract: A light-receiving device includes: a light guide plate that is a transparent member having, as main surfaces, a first surface and a second surface facing each other and has an emission end formed on at least one end portion of the light guide plate; a wave plate that is disposed on the first surface of the light guide plate and converts an optical signal of circularly polarized light into linearly polarized light; a hologram layer that is disposed on the second surface of the light guide plate and guides a traveling direction of the optical signal converted into the linearly polarized light toward the emission end of the light guide plate; and a light receiver that receives the optical signal emitted from the emission end of the light guide plate and converts the received optical signal into an electrical signal.