Abstract: A projection device includes a light source that emits parallel light, a spatial light modulator including a modulation part that modulates a phase of the parallel light emitted from the light source, a control unit that tiles the modulation part with tiles of at least two resolutions in which a phase image related to an image displayed by projection light being set, sets the phase image to each of the plurality of tiles that are tiled, and causes the light source to radiate the parallel light toward the modulation part in which the phase image is set; and, and a projection optical system that projects light modulated by the spatial light modulator as the projection light.

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: A light-receiving device includes a condenser lens configured to condense a spatial optical signal, a variable lens in which a lens region is formed at an arbitrary position, the variable lens focusing an optical signal derived from the spatial optical signal condensed by the condenser lens in the lens region, a control unit configured to form the lens region at a desired position of the variable lens and control an emission direction of the optical signal emitted from the variable lens, and a light-receiving element that is disposed with a light-receiving part facing the variable lens and receives the optical signal focused by the variable lens.

Abstract: A light reception device includes a condenser lens that condenses a spatial light signal, a light reception unit including at least one light reception element of which a light reception part is disposed to face the condenser lens to receive an optical signal derived from the spatial light signal condensed by the condenser lens, and a reflection structure disposed in a dead region around the light reception part to reflect the optical signal condensed by the condenser lens toward the light reception part.

Abstract: An objective of the present disclosure is to provide a patch antenna, a method, and a program that can easily match input impedance of the patch antenna at a predetermined frequency. A patch antenna according to the present disclosure includes: a microstrip line on which a signal is transmitted, provided on liquid crystal and extending in a first direction; a dielectric provided on the microstrip line; a patch antenna element provided on the dielectric, that obtains the signal from the microstrip line through electromagnetic bonding and transmits the signal; and a control unit that changes permittivity of the liquid crystal based on a voltage applied to the liquid crystal to match input impedance of the patch antenna at a predetermined frequency.

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 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: an LEO satellite includes a light projecting element that emits emission light to another LEO satellite, an optical telescope, an optical phased array, a light receiving element that receives incident light from the other LEO satellite, a distance measurement unit that measures a distance to the other LEO satellite based on at least one of the emission light and the incident light, and a control unit. The control unit captures the other LEO satellites by scanning emission light using the optical telescope and receives incident light from the other LEO satellites for the other LEO satellites on the same orbital plane, and captures the other LEO satellites by scanning emission light using the optical phased array and receives incident light from the other LEO satellites for the other LEO satellites on different orbital planes.

Abstract: A terminal control system causes a wireless terminal to perform a switching process of switching a connection destination of the wireless terminal in accordance with the wireless terminal being located at such a position as to be capable of establishing connection both with a wireless base station and with a free-space optical communication apparatus, acquires weather information regarding an area in which the wireless terminal is located, and causes, in accordance with the weather information, the wireless terminal to stop the switching process of switching the connection destination of the wireless terminal from the wireless base station to the free-space optical communication apparatus.

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: 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: A free-space optical communication control system includes at least one processor. The at least one processor carries out: a first detection process of detecting a change in a connection relationship between a first free-space optical communication apparatus and a second free-space optical communication apparatus adjacent to the first free-space optical communication apparatus; a second detection process of detecting a transition of work stages in accordance with the change in the connection relationship detected and plan information indicating a connection relationship between the first free-space optical communication apparatus and the second free-space optical communication apparatus in each of the work stages; and a connection control process of controlling, according to the transition of the work stages detected, which connection destination is connected to the first free-space optical communication apparatus.

Abstract: A communication control system includes at least one processor executing: a main communication process of carrying out communication with one or more targets through an optical fiber line; a specifying process of specifying, from among the one or more targets, a free-space optical communication target based on communication statuses in the main communication process; a sub communication process of carrying out communication with the free-space optical communication target via a free-space optical communication apparatus(es); and a selecting process of selecting, according to at least one of (i) a capacity of the communication with the free-space optical communication target in the main communication process, (ii) the communication statuses of the free-space optical communication apparatuses, and (iii) processing capacities of the free-space optical communication apparatuses, a path for free-space optical communication with the free-space optical communication target in the sub communication process.

Abstract: A management system for managing an upper free-space optical communication apparatus and a lower free-space optical communication apparatus that carry out free-space optical communication in an up-and-down direction is provided, the management system including at least one processor, the at least one processor carrying out: an acquisition process of acquiring a first index that indicates a quality of a first upward light signal received by the upper free-space optical communication apparatus; and a determination process of determining a possibility of contamination of a light sending and receiving window of the lower free-space optical communication apparatus in accordance with the first index, the lower free-space optical communication apparatus being configured to send and receive a light signal of the free-space optical communication through the light sending and receiving window.

Abstract: A communication system (1) according to an example aspect of the present invention includes a plurality of communication apparatuses (10) and a control apparatus (20), the control apparatus (20) including a control unit (21), the control unit (21) including: an acquisition unit (22) that acquires related information related to the communication apparatuses (10) and reference information; and an accumulation unit (23) that calculates correlation between the related information and the reference information, and accumulates correlation information indicative of the calculated correlation.

Abstract: A free space optical communication device includes: a plurality of light transmitting/receiving sections; and at least one processor configured to execute: a communication control process of controlling communication which is to be carried out via the plurality of light transmitting/receiving sections, in the communication control process, the at least one processor causing two or more light transmitting/receiving sections of the plurality of light transmitting/receiving sections to transmit same pieces of information in parallel according to respective different communication schemes.

Abstract: A free-space optical communication control system includes at least one processor. The at least one processor carries out: an interruption estimation process of estimating an interruption of free-space optical communication over a free-space optical communication network in accordance with movement route information that indicates a movement route of a mobile object movable within a communication area of the free-space optical communication network; and a path change process of changing a free-space optical communication path in accordance with an estimation result of the interruption estimation process.

Abstract: A communication system (1) includes a plurality of communication apparatuses (10) and a control apparatus (20), the control apparatus (20) including a control unit (21), the control unit (21) including: a management unit (22) that manages the number of established connections for each of the plurality of communication apparatuses (10); and an instruction unit (23) that instructs, in a case where at least one connection included in the established connections has been broken, the at least one communication apparatus (10) involved in the at least one broken connection to reestablish the at least one broken connection.

Abstract: A free space optical communication device includes: a plurality of light transmitting/receiving sections; and at least one processor configured to execute: a communication control process of controlling communication which is to be carried out via the plurality of light transmitting/receiving sections, in the communication control process, the at least one processor (a) determining a required communication capacity for the communication and (b) controlling, on the basis of the required communication capacity, the number of light transmitting/receiving sections to be used for the communication.

Abstract: A communication system (1) includes a plurality of communication apparatuses (10) and a control apparatus (20), the plurality of communication apparatuses (10) each including: a communication means that is configured to be capable of transmitting and receiving directional communication media; a specification means that specifies at least one connection destination candidate by carrying out scanning with use of the communication means; and a connection establishment means that establishes connection with the at least one connection destination candidate specified by the specification means, and the control apparatus (20) including a control means that controls a meshed network composed of the plurality of communication apparatuses (10) connecting to each other.