LOCATING DISTURBANCES IN OPTICAL FIBRES
    31.
    发明申请

    公开(公告)号:WO2022185075A1

    公开(公告)日:2022-09-09

    申请号:PCT/GB2022/050581

    申请日:2022-03-04

    Abstract: An apparatus (1) for determining a position of a disturbance to an optical fibre assembly (2) comprises two monitoring units (6, 8), each comprising a respective light detector (12a, 12b) and a respective clock (24a, 24b). The first monitoring unit (6) receives a first digital optical signal from the optical fibre assembly (2). The second monitoring unit (8) receives a second digital optical signal from the optical fibre assembly (2). The apparatus (1) monitors the state of polarisation of the first and second digital optical signals and determines respective times at which a change occurs in the state of polarisation of each signal, the change arising from a disturbance to the optical fibre assembly (2). The apparatus (1) uses said times to determine a position of the disturbance.

    TRANSMISSION MICROSCOPY
    32.
    发明申请

    公开(公告)号:WO2021064434A1

    公开(公告)日:2021-04-08

    申请号:PCT/GB2020/052456

    申请日:2020-10-05

    Abstract: Transmission microscopy apparatus (2) comprises an illumination apparatus (10) arranged to illuminate a sample region (6) with first and second monochromatic coherent light beams (12, 14), and an objective lens (4), having an imaging axis (A), for collecting light emanating from a sample (8) within the sample region (6). In a first configuration the first light beam (12) enters the sample region (6) along a first linear path from a first reflecting element (328; 406a; 506a) and the second light beam (14) enters along a second linear path from a second reflecting element (330; 406b; 506b) such that the first and second light beams interfere within the sample region to illuminate the sample with a first interference pattern (16). In a second configuration the first light beam (12) enters the sample region (6) along a different, third linear path such that the first and second light beams (12, 14) illuminate the sample (8) with a different, second interference pattern (18) which is not the same as any translation, rotation, or translation and rotation of the first pattern (16). The first, second and third paths are at respective angles α1, α2, α3 to the imaging axis and at least one is oblique to the imaging axis.

    POSITION DETERMINATION
    33.
    发明申请

    公开(公告)号:WO2021038224A1

    公开(公告)日:2021-03-04

    申请号:PCT/GB2020/052049

    申请日:2020-08-27

    Abstract: In a positioning system, a plurality of transmitter units (2, 3, 4, 5) transmit respective transmitter-specific identification signals at intervals, which are received at a mobile receiver unit (7). A processing system (7; 9) identifies the transmitter unit that transmitted each received identification signal, and, for each signal, determines range data from time of arrival data and determines distance data from Doppler shift information. The range data and distance data are compared to determine range error data. A position estimate for the mobile receiver unit (7) is determined by solving an optimisation problem using range estimates determined for the plurality of transmitter units, weighted in dependence on the range error data.

    OPTICAL-INTERFERENCE ANALYSIS
    34.
    发明申请

    公开(公告)号:WO2019229473A1

    公开(公告)日:2019-12-05

    申请号:PCT/GB2019/051514

    申请日:2019-05-31

    Inventor: VIKHAGEN, Eiolf

    Abstract: A system (1) is used to excite an object (2) at a vibration frequency, in order to induce stationary or travelling waves having the vibration frequency on the surface of the object (2). An optical interferometer is configured to use optical interference to determine vibration amplitude and phase data of the stationary or travelling wave at each of a plurality of points on the surface, relative to a reference phase. A processing system (4) is used to apply a spatial derivative filter to the vibration phase data, and the resulting spatial-derivative-of-phase data is processed to determine a property of the object (2), and is further processed to generate graphical-representation data for outputting on a display device (10).

    ULTRASOUND BLOOD-FLOW MONITORING
    35.
    发明申请

    公开(公告)号:WO2019155226A1

    公开(公告)日:2019-08-15

    申请号:PCT/GB2019/050344

    申请日:2019-02-07

    CPC classification number: A61B8/06 A61B8/4227 A61B8/4483 A61B8/488 A61B8/5207

    Abstract: The invention provides a method of monitoring blood flow in a vertebrate animal subject. Unfocussed plane-wave ultrasound pulses are transmitted into the subject, along a transmission axis, from a single-element ultrasound transducer (2) fastened to the subject (5). Reflections of the ultrasound pulses are received, generating a succession of pulse-Doppler response signals over time. Each pulse-Doppler response signal is processed to determine a first respective spatial-maximum velocity value for blood flowing towards the single transducer element (2), and a second respective spatial-maximum velocity value for blood flowing away. Heartbeats are identified from said spatial-maximum velocity values and a quality metric is assigned to each identified heartbeat. A subset of the spatial-maximum velocity values is identified for which the assigned quality metric exceeds a threshold level. The values from the subset are monitored, and, when a set of values from the subset satisfies a predetermined alert criterion an audible or visual alert is signalled.

    NEUTRAL-BEAM MICROSCOPY
    37.
    发明申请
    NEUTRAL-BEAM MICROSCOPY 审中-公开
    中性束显微镜

    公开(公告)号:WO2018087522A1

    公开(公告)日:2018-05-17

    申请号:PCT/GB2017/053320

    申请日:2017-11-03

    CPC classification number: G01N23/22 G21K1/06 G21K2201/068

    Abstract: A method of designing a neutral-beam microscope (1) is disclosed. The neutral-beam microscope comprises a neutral-particle source, arranged to emit neutral particles along a path towards a sample region. A skimmer (3) and an aperture-bearing member (5), such as a pinhole or a zone plate, are located along the path. The method comprises calculating (i) a diameter for the skimmer, (ii) a diameter for the aperture (6) of the aperture-bearing member, and (iii) a distance between the skimmer and the aperture, by solving an intensity-optimisation problem for the neutral-beam microscope having a predetermined resolution.

    Abstract translation: 公开了一种设计中性束显微镜(1)的方法。 中性束显微镜包括中性粒子源,该中性粒子源布置成沿朝向样品区域的路径发射中性粒子。 撇油器(3)和孔径承载构件(5),例如针孔或波带片沿路径设置。 该方法包括计算(i)撇渣器的直径,(ii)孔口轴承构件的孔口(6)的直径,以及(iii)撇渣器和孔口之间的距离,通过求解强度优化 具有预定分辨率的中性束显微镜的问题。

    SUPER-RESOLUTION IMAGING
    38.
    发明申请
    SUPER-RESOLUTION IMAGING 审中-公开
    超分辨率图像

    公开(公告)号:WO2017178823A1

    公开(公告)日:2017-10-19

    申请号:PCT/GB2017/051034

    申请日:2017-04-12

    Abstract: An apparatus, for super-resolution imaging of a sample, comprising: an objective lens (4) that collects light emanating from the sample (2) within a forward field of view (30); a processing arrangement (20) that performs super-resolution imaging of the sample with the collected light; a waveguide component (1) arranged to (i) receive input light from outside the field of view, and (ii) use total internal reflection within the waveguide component to direct excitation light onto the sample; and an electronic optical-path control system (40) that causes the input light to: follow, at a first time, a first optical path corresponding to a first optical mode within the waveguide component; and follow, at a second time, a second optical path corresponding to a second optical mode within the waveguide component, wherein the second time is different from the first time, and the second optical mode is different from the first optical mode.

    Abstract translation: 一种用于样本的超分辨率成像的装置,包括:物镜(4),其收集从前向视场(30)内的样本(2)发出的光; 处理装置(20),其利用所收集的光执行样本的超分辨率成像; (i)接收来自视场外部的输入光,以及(ii)使用波导组件内的全内反射来将激发光引导到样本上;以及(ii) 以及电子光路控制系统(40),所述电子光路控制系统(40)使所述输入光线:在第一时间跟随对应于所述波导部件内的第一光学模式的第一光路; 并且第二次跟随与波导部件内的第二光学模式对应的第二光路,其中第二时间不同于第一时间,并且第二光学模式不同于第一光学模式。

    PROXIMITY DETECTION
    39.
    发明申请
    PROXIMITY DETECTION 审中-公开
    接近度检测

    公开(公告)号:WO2017137755A2

    公开(公告)日:2017-08-17

    申请号:PCT/GB2017/050334

    申请日:2017-02-09

    Abstract: An electronic device (1) such as a cell phone, or a proximity detector for an electronic device (1), has an ultrasound transmitter (5), an ultrasound receiver (6), and a processing system. It transmits an ultrasonic sine-wave signal from the transmitter (5), and receives the ultrasonic sine-wave signal, through air, at the receiver (6). It detects when the frequency of the transmitted signal and a frequency of the received signal satisfy a predetermined difference criterion, and uses this to determine whether to disable or enable a touch or touchless input (2) on the device (1).

    Abstract translation: 诸如蜂窝电话的电子设备(1)或用于电子设备(1)的接近检测器具有超声波发射器(5),超声波接收器(6)和处理器 系统。 它从发射器(5)发射超声波正弦波信号,并通过空气在接收器(6)处接收超声波正弦波信号。 它检测发送信号的频率和接收信号的频率何时满足预定的差值标准,并且用它来确定是否禁用或启用设备(1)上的触摸或非触摸输入(2)。

    EVENT GENERATING UNIT
    40.
    发明申请
    EVENT GENERATING UNIT 审中-公开
    事件发生单元

    公开(公告)号:WO2016203193A1

    公开(公告)日:2016-12-22

    申请号:PCT/GB2016/051310

    申请日:2016-05-06

    CPC classification number: G06F13/24

    Abstract: A microcontroller (2) has a processor (6), peripherals (18, 20, 22, 24, 26), a programmable peripheral interconnect (PPI) (10), an event-generating unit (EGU) (17), and a memory (8). The peripherals respond to task signals from the PPI. The EGU responds to a predetermined change to the contents of an event-generating register (57, 59) by signalling an event to the PPI. Stored PPI mappings can map an EGU event to a task of one of the peripherals. Mappings from one EGU event to two or more peripheral tasks cause the PPI to respond to an event signal from the EGU by sending the respective task signals within a maximum time limit. Software in the memory comprises instructions to store such mappings in a mapping memory, and to make the predetermined change to the contents of the event-generating register. In another aspect, an interrupt-generating unit (17) is arranged to send an interrupt to the processor (6) in response to receiving a task signal from the PPI (10).

    Abstract translation: 微控制器(2)具有处理器(6),外围设备(18,20,22,24,26),可编程外设互连(PPI)(10),事件产生单元(EGU)(17)和 记忆(8)。 外设对PPI的任务信号做出响应。 EGU通过向PPI发送事件来响应对事件生成寄存器(57,59)的内容的预定改变。 存储的PPI映射可以将EGU事件映射到其中一个外设的任务。 从一个EGU事件到两个或更多个外围任务的映射使得PPI通过在最大时限内发送相应的任务信号来响应来自EGU的事件信号。 存储器中的软件包括将映射存储在映射存储器中的指令,并对事件生成寄存器的内容进行预定的改变。 另一方面,中断产生单元(17)被布置成响应于接收到来自PPI(10)的任务信号而向处理器(6)发送中断。

Patent Agency Ranking