-
公开(公告)号：US20210135768A1
公开(公告)日：2021-05-06
申请号：US16770354
申请日：2018-11-22
Applicant: BAE SYSTEMS plc
Inventor： Michael Stewart Griffith , Andrew James Williams
IPC: H04B10/80 , H04B10/112
Abstract: The invention relates to the field of Free Space Optics (FSO), more specifically it is directed to: a method of obtaining a connection between at least two optical signal nodes, of a FSO, communication system each node comprising a transmitting device and receiving device; and transmitting via the transmitting device of a first node, a first diverged optical signal into an optical medium; receiving at the receiving device of the second node the first diverged optical signal and transmitting via the transmitting device of the second node a second diverged signal to the receiving device of the first node to establish a location of said first node establishing a connection, after which; the first node switches from the diverged optical signal to a narrower optical signal for the transmission of data via the connection.
-
公开(公告)号：US09761941B2
公开(公告)日：2017-09-12
申请号：US14762678
申请日：2014-01-27
Applicant: BAE SYSTEMS plc
Inventor： Michael Stewart Griffith , Leslie Charles Laycock
Abstract: There is disclosed A directional multi-band antenna, the antenna comprising: —an optical unit comprising an optical sensor; —an RF unit comprising an RF sensor; —a substantially planar optical lens, the optical lens comprising surface relief elements for beam forming, the lens being arranged to focus optical signal beams, incident along a first optical axis, onto the optical sensor, the optical lens being substantially transparent to RF signals, —an RF beam forming device arranged to receive RF signals incident along the first optical axis and focus such RF signals onto the RF sensor.
-
公开(公告)号：US11463168B2
公开(公告)日：2022-10-04
申请号：US17415984
申请日：2019-12-10
Applicant: BAE SYSTEMS plc
Inventor： Stephen Derek Finch , Michael Stewart Griffith , Andrew James Williams
IPC: H04B10/00 , H04B10/118 , H04B10/112
Abstract: A multi-aperture free-space optical communications receiver comprises a plurality of telescopes each having a clear objective aperture with a diameter between 50 mm and 250 mm and arranged for receiving light collectively from an optical communications light source. A coherent combiner unit is configured for coherently combining the collectively received light to produce a combined optical signal therewith. Each telescope is arranged in association with, respectively, a wavefront detector to determine a wavefront of said received light directed to it by the respective telescope, a steerable reflector unit including a deformable mirror controllable to deform according to said determined wavefront such that said received light is reflected by the deformable mirror with a modified wavefront, and an optical signal receiver comprising a single-mode optical fibre. The steerable reflector unit is steerable to input received light with modified wavefront into the single-mode optical fibre for reception by the optical signal receiver.
-
公开(公告)号：US11418265B2
公开(公告)日：2022-08-16
申请号：US16770354
申请日：2018-11-22
Applicant: BAE SYSTEMS plc
Inventor： Michael Stewart Griffith , Andrew James Williams
IPC: H04B10/112 , H04B10/80
Abstract: The invention relates to the field of Free Space Optics (FSO), more specifically it is directed to: a method of obtaining a connection between at least two optical signal nodes, of a FSO, communication system each node comprising a transmitting device and receiving device; and transmitting via the transmitting device of a first node, a first diverged optical signal into an optical medium; receiving at the receiving device of the second node the first diverged optical signal and transmitting via the transmitting device of the second node a second diverged signal to the receiving device of the first node to establish a location of said first node establishing a connection, after which; the first node switches from the diverged optical signal to a narrower optical signal for the transmission of data via the connection.
-
公开(公告)号：US20220077929A1
公开(公告)日：2022-03-10
申请号：US17415984
申请日：2019-12-10
Applicant: BAE SYSTEMS plc
Inventor： Stephen Derek Finch , Michael Stewart Griffith , Andrew James Williams
IPC: H04B10/118 , H04B10/112
Abstract: A multi-aperture free-space optical communications receiver comprises a plurality of telescopes each having a clear objective aperture with a diameter between 50 mm and 250 mm and arranged for receiving light collectively from an optical communications light source. A coherent combiner unit is configured for coherently combining the collectively received light to produce a combined optical signal therewith. Each telescope is arranged in association with, respectively, a wavefront detector to determine a wavefront of said received light directed to it by the respective telescope, a steerable reflector unit including a deformable mirror controllable to deform according to said determined wavefront such that said received light is reflected by the deformable mirror with a modified wavefront, and an optical signal receiver comprising a single-mode optical fibre. The steerable reflector unit is steerable to input received light with modified wavefront into the single-mode optical fibre for reception by the optical signal receiver.
-
Patent Agency Ranking
公开(公告)号：US20180252986A1
公开(公告)日：2018-09-06
申请号：US15754094
申请日：2016-08-23
Applicant: BAE Systems plc
Inventor： Lydia Ann Hyde , Andrew James Williams , Michael Stewart Griffith , Nicholas Giacomo Robert Colosimo
CPC classification number: G02F1/39 , G01S17/66 , G01S17/89 , H01L25/042 , H04N5/30
Abstract: Imaging apparatus on a host platform having an external surface, the external surface comprising a first surface facing a first direction and a second surface facing a second direction, the second direction being different to the first, the apparatus comprising a first and second plurality of single pixel detectors (10) distributed about said external surface such that the first plurality of single pixel detectors are distributed over the first surface and the second plurality of single pixel detectors are distributed over the second surface, each single pixel detector being configured to receive radiation reflected by an object or region of interest (18) and generate two-dimensional image data representative thereof, the apparatus further comprising an image processing module (16) for receiving said two-dimensional image data from each of a plurality of single pixel detectors (10) and reconstructing a three-dimensional image of said object or region of interest (18) using a ghost imaging algorithm.
-
公开(公告)号：US10476591B2
公开(公告)日：2019-11-12
申请号：US16309333
申请日：2017-06-09
Applicant: BAE SYSTEMS plc
IPC: H04B10/112
Abstract: A free space optical communication system receiver (500) comprising: a central optical sensor (600); and a plurality of further optical sensors (601-604) disposed around a peripheral edge of the central optical sensor (600). The free space optical communication system receiver (500) may be coupled to means for moving the free space optical communication system receiver (500) relative to an incoming optical signal (510). A controller (508) may be configured to, using measurements of the incident optical signal (510) by the plurality of further optical sensors (601-604), control the means so as to move the free space optical communication system receiver (500) relative to the incident optical signal (510).
-
公开(公告)号：US09692512B2
公开(公告)日：2017-06-27
申请号：US14775097
申请日：2014-03-04
Applicant: BAE SYSTEMS plc
Inventor： Michael Stewart Griffith , Leslie Charles Laycock
CPC classification number: H04B10/2575 , G02B6/32 , H01Q3/30 , H01Q5/22 , H01Q5/42 , H01Q21/061
Abstract: There is disclosed a directional multi-band antenna comprising a substrate structure, a plurality of RF units arranged at the substrate structure to provide an RF phased array, the RF phased array having an angular scan range, an array of optical units arranged at the substrate structure and interspersed amongst the RF units, an array of optical lensing devices supported over the substrate structure, the array of optical lensing devices being substantially RF transmissive and being arranged to correspond with the arrangement of the optical units, such that each optical unit may communicate light signals with an associated optical lensing device so as to communicate light signals along an optical axis within the angular scan range of the RF phased array.
-
公开(公告)号：US09865921B2
公开(公告)日：2018-01-09
申请号：US14762979
申请日：2014-01-27
Applicant: BAE SYSTEMS plc
Inventor： Michael Stewart Griffith , Leslie Charles Laycock
CPC classification number: H01Q5/22 , G02B3/14 , G02B6/4225 , G02B17/0605 , G02B27/1006 , H01Q19/19 , H01Q19/192
Abstract: There is disclosed a directional multi-band antenna comprising: a primary reflector, at least one secondary reflector, a multi-layer dielectric layer selectively reflective or transmissive of incident radiation according to wavelength, the layer being provided at the surface of either the primary or the secondary reflector, an RF unit comprising a collocated sensor and transmitter, an Optical unit comprising a collocated sensor and transmitter, arranged such that the primary reflector is for passing signals between the secondary reflector and the environment, the secondary reflector is firstly for passing signals between the primary reflector and the RF unit, and secondly for passing signals between the primary reflector and the Optical unit and arranged such that the antenna is operable to transmit or receive, RF or Optical signals, along a common beam axis.
-
公开(公告)号：US09523609B2
公开(公告)日：2016-12-20
申请号：US14783616
申请日：2014-04-08
Applicant: BAE SYSTEMS plc
Inventor： Ivan Vallejo Veiga , Leslie Charles Laycock , Michael Stewart Griffith
CPC classification number: G01J3/2823 , G01J3/0208 , G01J3/0237 , G01J2003/2826
Abstract: There is disclosed a spectral imaging apparatus for processing electromagnetic (EM) radiation, the EM radiation originating from a target scene and comprising a wide range of frequencies, the system comprising:A dispersive element for receiving EM radiation from the target scene and promoting differing amounts of dispersion depending on the frequency of the EM radiation,A deformable lens arranged to receive EM radiation from the dispersive element,An imaging sensor for detecting EM radiation across the wide range of frequencies, and arranged to receive EM radiation from the deformable lens,Wherein the deformable lens is operable to adopt any one of a plurality of focal conditions, each focal condition tending to focus a different range of the EM radiation at the imaging sensor, each focal condition thereby defining a component band for the EM radiation.
Abstract translation: 其中可变形透镜可操作以采用多个焦点条件中的任何一个，每个焦点条件倾向于将成像传感器上的EM辐射的不同范围聚焦，从而每个聚焦条件限定EM辐射的分量带。
-
-
-
-
-
-
-
-
-
Search Results
14
records
(took 0.013 seconds)
