Abstract: An authentication device comprising: a storage unit for storing shared information including password and shared rule that are preset for each user; a random number sequence generation unit for generating a random number sequence pattern; a calculation unit for generating a key code based on the shared rules, using provisional numerals selected from the random number sequence pattern and secret numerals constituting passwords; a transceiver for receiving identification information of a user to be authenticated from an input terminal, transmitting the random number sequence pattern in association with the identification information to the input terminal, and receiving, from the input terminal, a key code consisting of the numerals selected based on the shared rules from the random number sequence pattern by the user to be authenticated; and an authentication unit for authenticating the user to be authenticated, using the key code received and the key code generated.

Abstract: Provided is a transmitter that includes a light source including a plurality of emitters, a spatial optical modulator including a modulating part in which a plurality of modulation regions to be irradiated with illumination light derived from light emitted from each of the plurality of emitters are set, and a reflector including a reflective surface that is irradiated with the modulated light modulated in each of the plurality of modulation regions and reflects the modulated light modulated in each of the plurality of modulation regions in a certain direction in a horizontal plane.

Abstract: Provided is a transmitter including a light source that emits illumination light, a spatial light modulator that includes a modulation part to which the illumination light emitted from the light source is irradiated, a first annular reflector that has a first annular reflection surface irradiated with modulated light modulated by the modulation part, a second annular reflector that is disposed concentrically with the first annular reflector and has a second annular reflection surface irradiated with the modulated light reflected by the first annular reflection surface, a diffusion transmitter that is irradiated with the modulated light reflected by the second annular reflection surface, changes an optical path of the irradiated modulated light in a direction along a horizontal plane, and diffuses and transmits the modulated light having the changed optical path, and a ball lens that projects the light transmitted from the diffusion transmitter.

Abstract: A receiving device includes a notification light transmitter that transmits notification light in a direction along a horizontal plane, a ball lens disposed below the notification light transmitter, a plurality of light receivers disposed in a condensing region of the ball lens and each including a first light receiving element that receives notification light transmitted from a communication target and a second light receiving element that receives communication light transmitted from the communication target, and a moving mechanism on which the ball lens is disposed and that movably supports the plurality of light receivers in accordance with the condensing region of the ball lens.

Abstract: A light transmitting device that includes a light transmitter that transmits a spatial light signal including a communication signal, and a light transmission control unit that adds a dummy signal having a same brightness as a ghost image of the communication signal to the spatial light signal and controls the light transmitter in such a way that the dummy signal is displayed at a position of the ghost image.

Abstract: A display system includes a plurality of tags and a detection device. Each tag of the plurality of tags stores an identification code for identifying that tag, generates electric power upon receiving light that contains identification information to be compared with the identification code, and emits light using the electric power of that tag when the identification information contained in the received light matches the identification code. The detection device generates image data in accordance with an input of the identification information on a selected article, projects scanning light containing identification information on the position of the tag extracted from the generated image data, and, when emitted light from any of the plurality of tags is detected from the image data acquired during a period in which the scanning light is projected, projects marking light within a range attached with the tag that has emitted light.

Abstract: A light-receiving device includes: a light guide plate of a transparent member having a first surface and a second surface as principal surfaces opposed to each other and an emission surface formed on at least one end of the transparent member; a lens sheet having lenses and is disposed opposite to the first surface; a support member that supports the lens sheet such that a distance between the principal surface of the lens sheet and the second surface is equal to the focal distance of the lenses; a directional light-guide layer that is disposed on the second surface of the light guide plate and guides, toward the emission surface, the travel direction of an optical signal entering the light guide plate; and a receiver that receives the optical signal emitted from the emission surface of the light guide plate and converts the received optical signal into an electric signal.

Abstract: Provided is an antenna device including an antenna array including a plurality of patch antennas arrayed in a grid, a first switch group including a first switch disposed on a wiring line connecting two adjacent patch antennas, and a second switch group including a second switch disposed on a wiring line between an antenna assembly formed by at least four adjacent patch antennas and a signal source connected to at least one patch antenna constituting the antenna assembly.

Abstract: Provided is a display antenna including a display including a plurality of light emitters arranged in a grid, an antenna array having an antenna assembly in which a plurality of patch antennas through which light in a wavelength band of a visible region is transmitted is disposed in a grid, the antenna array being disposed to be superimposed on the display, and a phase shifter disposed in a gap region sandwiched between the plurality of light emitters, connected to at least one of the plurality of patch antennas, and configured to shift a signal to be transmitted and received.

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 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: 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 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 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: 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: 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: 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.