OPTICAL SIGNAL TRANSMITTER
    1.
    发明申请

    公开(公告)号:US20210135768A1

    公开(公告)日:2021-05-06

    申请号:US16770354

    申请日:2018-11-22

    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.

    Multi-aperture free-space optical communications receiver

    公开(公告)号:US11463168B2

    公开(公告)日:2022-10-04

    申请号:US17415984

    申请日:2019-12-10

    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.

    Optical signal transmitter
    4.
    发明授权

    公开(公告)号:US11418265B2

    公开(公告)日:2022-08-16

    申请号:US16770354

    申请日:2018-11-22

    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.

    MULTI-APERTURE FREE-SPACE OPTICAL COMMUNICATIONS RECEIVER

    公开(公告)号:US20220077929A1

    公开(公告)日:2022-03-10

    申请号:US17415984

    申请日:2019-12-10

    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.

    IMAGING APPARATUS AND METHOD
    6.
    发明申请

    公开(公告)号:US20180252986A1

    公开(公告)日:2018-09-06

    申请号:US15754094

    申请日:2016-08-23

    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.

    Free space optical communication system receiver

    公开(公告)号:US10476591B2

    公开(公告)日:2019-11-12

    申请号:US16309333

    申请日:2017-06-09

    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).

    Directional multiband antenna
    8.
    发明授权

    公开(公告)号:US09692512B2

    公开(公告)日:2017-06-27

    申请号:US14775097

    申请日:2014-03-04

    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.

    Directional multi-band antenna
    9.
    发明授权

    公开(公告)号:US09865921B2

    公开(公告)日:2018-01-09

    申请号:US14762979

    申请日:2014-01-27

    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.

    Spectral imaging
    10.
    发明授权
    Spectral imaging 有权
    光谱成像

    公开(公告)号:US09523609B2

    公开(公告)日:2016-12-20

    申请号:US14783616

    申请日:2014-04-08

    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。

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