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公开(公告)号：US20240345328A1
公开(公告)日：2024-10-17
申请号：US18683295
申请日：2021-08-27
申请人： NEC Corporation
发明人： Koya TAKATA , Hisashi MIZUMOTO , Fujio OKUMURA
CPC分类号： G02B6/32 , G02B6/4246 , H04B10/671
摘要： A reception device that includes a ball lens that collects an optical signal propagating in a space, a light receiving element array that includes a plurality of light receiving elements that each receive the optical signal collected by the ball lens and outputs a signal derived from the optical signal received by each of the plurality of light receiving elements, and a reception circuit that decodes the signal output from the light receiving element array.
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公开(公告)号：US20240171711A1
公开(公告)日：2024-05-23
申请号：US18282848
申请日：2022-02-10
申请人： NEC Corporation
发明人： Koya TAKATA , Hisashi MIZUMOTO , Fujio OKUMURA
IPC分类号： H04N9/31
CPC分类号： H04N9/3155 , H04N9/3161 , H04N9/3188
摘要： 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.
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公开(公告)号：US20240171288A1
公开(公告)日：2024-05-23
申请号：US18282897
申请日：2022-02-10
申请人： NEC Corporation
发明人： Koya TAKATA , Hisashi MIZUMOTO , Fujio OKUMURA
摘要： 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.
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公开(公告)号：US20240097787A1
公开(公告)日：2024-03-21
申请号：US18222415
申请日：2023-07-14
申请人： NEC Corporation
发明人： Koya TAKATA , Atsushi Kamoi , Hisashi Mizumoto , Masaki Aizono
IPC分类号： H04B10/112 , H04B10/079
CPC分类号： H04B10/1123 , H04B10/0791
摘要： 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.
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公开(公告)号：US20240073969A1
公开(公告)日：2024-02-29
申请号：US18274315
申请日：2022-03-14
申请人： NEC Corporation
发明人： Koya TAKATA , Hisashi Mizumoto , Atsushi Kamoi
摘要： 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) including: a related information acquisition unit (22) that acquires related information related to the communication apparatuses; a connection request acquisition unit (23) that acquires a connection request from a new terminal; a determination unit (24) that determines a communication apparatus which is to be connected to the new terminal; and an instruction unit (25) that instructs the determined communication apparatus to carry out scanning with respect to the new terminal.
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公开(公告)号：US20240171286A1
公开(公告)日：2024-05-23
申请号：US18282877
申请日：2022-02-10
申请人： NEC Corporation
发明人： Koya TAKATA , Hisashi MIZUMOTO , Fujio OKUMURA
IPC分类号： H04B10/61
CPC分类号： H04B10/615 , H04B10/616
摘要： 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.
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公开(公告)号：US20240080913A1
公开(公告)日：2024-03-07
申请号：US18274419
申请日：2022-03-14
申请人： NEC Corporation
发明人： Koya TAKATA , Hisashi MIZUMOTO , Atsushi KAMOI
摘要： A communication apparatus (10) includes: at least one communication means (11) that is configured to be capable of transmitting and receiving directional communication media; a specification means (12) that specifies at least one connection destination candidate by scanning with use of the at least one communication means; and a connection establishment means (13) that establishes connection with the at least one connection destination candidate specified by the specification means.
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公开(公告)号：US20240073704A1
公开(公告)日：2024-02-29
申请号：US18274361
申请日：2022-03-14
申请人： NEC Corporation
发明人： Koya TAKATA , Hisashi MIZUMOTO , Atsushi KAMOI
IPC分类号： H04W16/28
CPC分类号： H04W16/28
摘要： A communication apparatus (20) according to an example aspect of the present invention includes: at least one communication means (21) that is configured to be capable of transmitting and receiving directional communication media; and a determination means (22) that determines at least one communication destination with which to communicate by the at least one communication means, in the case of determination of communication with a plurality of communication destinations, the determination means selecting the plurality of communication destinations so that an angle between the plurality of communication destinations as viewed from the communication apparatus is not less than a predetermined angle.
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公开(公告)号：US20240014899A1
公开(公告)日：2024-01-11
申请号：US18218740
申请日：2023-07-06
申请人： NEC Corporation
发明人： Koya TAKATA , Hisashi MIZUMOTO , Fujio OKUMURA
IPC分类号： H04B10/112
CPC分类号： H04B10/1123
摘要： 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.
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公开(公告)号：US20220244444A1
公开(公告)日：2022-08-04
申请号：US17622969
申请日：2020-06-22
申请人： NEC Corporation
发明人： Koya TAKATA , Fujio OKUMURA
IPC分类号： F21V8/00 , H04B10/67 , H04B10/112
摘要： 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.
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