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公开(公告)号：US20220299642A1
公开(公告)日：2022-09-22
申请号：US17753265
申请日：2020-08-20
Applicant: BAE SYSTEMS plc
Inventor： Mark Edgar Bray , Jason John Lepley
Abstract: Methods and apparatus for detecting a modulating element of an object in a scene are described in which an element in a scene is illuminated with a modulated light source. A signal is obtained from an optical detector based on light received from the illuminated element. An intermediate frequency signal is detected from the signal obtained from the optical detector, the intermediate frequency signal being related to a frequency of the modulated light source and a frequency of modulation of the element within the scene. The modulating element is detected based on the intermediate frequency signal.
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公开(公告)号：US20220326420A1
公开(公告)日：2022-10-13
申请号：US17753006
申请日：2020-08-13
Applicant: BAE SYSTEMS plc
Inventor： Mark Edgar Bray
Abstract: A vehicle surface 30, preferably wherein the vehicle is an aircraft, is described. The vehicle surface 30 comprises thereon and/or therein a set of retroreflectors 300, including a first retroreflector 300A, configured to reflect, at least in part, incident hostile light towards a source thereof.
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公开(公告)号：US20220299612A1
公开(公告)日：2022-09-22
申请号：US17753263
申请日：2020-08-13
Applicant: BAE SYSTEMS plc
Inventor： Mark Edgar Bray , Jason John Lepley
IPC: G01S7/4865 , G08B13/196
Abstract: Methods and apparatus for detecting a modulating element of an object are described in which signal values are obtained from one or more optical detectors. A determination is made if there is a time dependent variation in the obtained signal values at the one or more optical detector and a modulating element is detected based on the determination.
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公开(公告)号：US20250070891A1
公开(公告)日：2025-02-27
申请号：US18720796
申请日：2022-12-14
Applicant: BAE SYSTEMS PLC
Inventor： Mark Edgar Bray
IPC: H04B13/02
Abstract: In some examples, an apparatus for optical underwater data transmission comprises an optical transmitter configured to generate an optical signal for a short range underwater optical communications channel, wherein the optical transmitter comprises a source of electromagnetic radiation configured to generate an optical signal with a selected wavelength.
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公开(公告)号：US20230344524A1
公开(公告)日：2023-10-26
申请号：US17754583
申请日：2020-09-28
Applicant: BAE SYSTEMS plc
Inventor： Mark Edgar Bray , Andrew James Williams
Abstract: A network, or part thereof for example a link, 1 is described. The network 1 is for data communication through a medium, preferably wherein the medium comprises and/or is, at least in part, a liquid medium LM. The network 1 comprises a set of transmitters 11, including a first transmitter 11A comprising a controller 110A, wherein the first transmitter 11A is configured to transmit a set of polarised optical signals S, including a first polarised optical signal S1 comprising first data D1 of set of data D. The network 1 comprises a set of receivers 12, including a first receiver 12A comprising a controller 120A, wherein the first receiver 12A is configured to receive the first polarised optical signal S1.
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Patent Agency Ranking
公开(公告)号：US12008805B2
公开(公告)日：2024-06-11
申请号：US17753263
申请日：2020-08-13
Applicant: BAE SYSTEMS plc
Inventor： Mark Edgar Bray , Jason John Lepley
IPC: G01S7/4865 , G06V20/00 , G08B13/196
CPC classification number: G06V20/00 , G01S7/4865 , G08B13/1965
Abstract: Methods and apparatus for detecting a modulating element of an object are described in which signal values are obtained from one or more optical detectors. A determination is made if there is a time dependent variation in the obtained signal values at the one or more optical detector and a modulating element is detected based on the determination.
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公开(公告)号：US11576456B2
公开(公告)日：2023-02-14
申请号：US16980922
申请日：2019-03-06
Applicant: BAE SYSTEMS plc
Inventor： Mark Edgar Bray
Abstract: An optical filter includes a first layer including a first notch filter arranged to attenuate electromagnetic radiation having a first wavelength λ1 incident normally thereupon. The optical filter includes a second layer including a second notch filter arranged to attenuate electromagnetic radiation having a second wavelength λ2 incident normally thereupon. The first wavelength λ1 and the second wavelength λ2 are different. The second layer is stacked upon the first layer. In use, the first notch filter attenuates the electromagnetic radiation having a predetermined wavelength λ incident thereupon at a first angle of incidence θ1 and the second notch filter attenuates the electromagnetic radiation having the predetermined wavelength λ incident thereupon at a second angle of incidence θ2, wherein the first angle of incidence θ1 and the second angle of incidence θ2 are different.
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公开(公告)号：US20210311227A1
公开(公告)日：2021-10-07
申请号：US17267260
申请日：2019-08-09
Applicant: BAE SYSTEMS plc
Inventor： Mark Edgar Bray , Daniel Phillip Crane , Daniel Benjamin Black , Duncan Peter Rowe , Leslie Charles Laycock
Abstract: A coating material (10) for coating an article is described. The coating material (10) comprises a surface (100) having an optical interference coating (110) thereon. The coating material (10) improves protection of the article from incident electromagnetic radiation having a predetermined wavelength. The coating material (10) may retroreflect at least some of the incident electromagnetic radiation, for example towards a source (e.g. a laser) thereof. An article having a coating provided by such a coating material and methods of providing such coating materials are also described.
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公开(公告)号：US11927781B2
公开(公告)日：2024-03-12
申请号：US16980921
申请日：2019-03-06
Applicant: BAE SYSTEMS plc
Inventor： Mark Edgar Bray
CPC classification number: G02B5/28 , G02B5/26 , G02B25/001 , G02B27/1006 , G02B27/142
Abstract: An optical device 10 comprises an objective lens 11 defining a focal plane FP and an eyepiece 12 spaced apart therefrom, defining an optical axis OA therethrough. The optical device 10 comprises an optical member 13 having a first planar face 14, arranged on the optical axis OA proximal the focal plane FP, wherein the first planar face 14 is arranged to oppose the objective lens 11. The optical device 10 comprises a filter assembly 100 comprising a first notch filter 101 arranged to attenuate transmission of electromagnetic radiation having a first wavelength λ1, wherein the first notch filter 101 is arranged in front of the optical member 13. The first notch filter 101 is arranged at a first oblique angle θ1 to the optical axis OA whereby, in use, incident electromagnetic radiation having a predetermined wavelength λi propagating along the optical axis is reflected by the first notch filter 101 away therefrom, wherein the first wavelength λ1 and the predetermined wavelength λi are different. In this way, retro-reflection of the incident electromagnetic radiation towards a source thereof is reduced, thereby better detection of the optical device 10.
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公开(公告)号：US11914174B2
公开(公告)日：2024-02-27
申请号：US17753006
申请日：2020-08-13
Applicant: BAE SYSTEMS plc
Inventor： Mark Edgar Bray
CPC classification number: G02B5/124 , B64D7/00 , F41H11/00 , G02B5/126 , F41H13/0056
Abstract: A vehicle surface includes a set of retroreflectors configured to reflect, at least in part, incident hostile light towards a source of the incident hostile light.
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