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1. 发明申请

WO2018211281A1 TOUCH-BASED INPUT DEVICE 审中-公开
公开(公告)号：WO2018211281A1
公开(公告)日：2018-11-22
申请号：PCT/GB2018/051342
申请日：2018-05-17
申请人： SINTEF TTO AS , SAMUELS, Adrian James
发明人： DAHL, Tobias Gulden , BJERKENG, Magnus Christian , VOGL, Andreas , PETTERSEN, Odd Kristen Østern
IPC分类号： G06F3/043 , G01H9/00
摘要： An input device (4) comprises a plurality of optical vibration sensors (2) mounted in a common housing. Each optical vibration sensor (2) comprises a diffractive optical element (14); a light source (10) arranged to illuminate the diffractive optical element (10) such that a first portion of light (32) passes through the diffractive optical element (14) and a second portion of light (30) is reflected from the diffractive optical element (14); and a photo detector (12) arranged to detect an interference pattern generated by said first and second portions of light (10, 12). The optical vibration sensor (2) is configured so that in use, after the first portion of light (32) passes through the diffractive optical element (14), the first portion of light (32) is reflected from a reflective surface (26) onto the photo detector (12). The input device (4) is placed in contact with a surface of a solid body (24), and an object is brought into physical contact with the surface of the solid body (24), thereby causing vibrations in the solid body (24). The vibrations are detected using two or more of the optical vibration sensors (2). The relative phase(s) of the vibrations are used to determine information regarding the point of contact of the object on the surface of the solid body (24).

2. 发明申请

WO2019220103A1 OPTICAL MICROPHONE ASSEMBLY 审中-公开
公开(公告)号：WO2019220103A1
公开(公告)日：2019-11-21
申请号：PCT/GB2019/051323
申请日：2019-05-15
申请人： SINTEF TTO AS , SAMUELS, Adrian James
发明人： ANGELSKÅR, Hallvard , BAKKE, Thor , JOHANSEN, Ib-Rune , LACOLLE, Matthieu , VENNERØD, Jakob , VOGL, Andreas , WANG, Dag
IPC分类号： H04R23/00
摘要： An optical microphone assembly (38) comprises a rigid substrate (42); an interferometic arrangement, a light source (48), at least one photo detector (50) and an enclosure (74). The interferometric arrangement comprises a membrane (46) and at least one optical element (62) spaced from the membrane (46), wherein the at least one optical element comprises a surface (60) of the substrate (42) and/or is disposed on a surface (60) of the substrate (42). The light source (48) is arranged to provide light to the interferometric arrangement such that a first portion of the light propagates along a first optical path via the interferometric arrangement and a second portion of the light propagates along a second different optical path via the interferometric arrangement, thereby giving rise to an optical path difference between the first and second optical paths which depends on a distance between the membrane (46) and the optical element (62). The photo detector(s) (50) are arranged to detect at least part of an interference pattern generated by said first and second portions of light dependent on said optical path difference. The enclosure (74) is arranged to form an acoustic cavity (76) in fluid communication with one side of the membrane (46). The volume of the acoustic cavity (76) is at least 3mm multiplied by d 2 , where d is a diameter of the membrane (46).

3. 发明申请

WO2017203284A1 ACCELEROMETERS 审中-公开
标题翻译：加速度计
公开(公告)号：WO2017203284A1
公开(公告)日：2017-11-30
申请号：PCT/GB2017/051513
申请日：2017-05-26
申请人： SINTEF TTO AS , SAMUELS, Adrian James
发明人： DAHL, Tobias Gulden , BJERKENG, Magnus Christian , VOGL, Andreas
IPC分类号： G01P15/093
摘要： An optical accelerometer arrangement (20) comprises an array of optical accelerometers (26)attached to a common structure (22). Each oftheoptical accelerometers (26) providesa signal indicative of displacement of a measurement mass (6) as a result of an acceleration along a given axis applied to the common structure (22). The arrangement (20) also comprises a processor (31a) configured to determine an estimate of the acceleration using the signals provided by the accelerometers (26). The arrangement (20) may be attached to an object (40; 46; 0; 52) which also comprises a gyroscope (44) and/or a camera (48).
摘要翻译：光学加速度计布置（20）包括附接到公共结构（22）的光学加速度计阵列（26）。每个光学加速度计（26）提供指示测量质量块（6）的位移的信号，作为沿着施加到公共结构（22）的给定轴的加速度的结果。该装置（20）还包括处理器（31a），其被配置为使用由加速度计（26）提供的信号来确定加速度的估计。该装置（20）可以附接到还包括陀螺仪（44）和/或相机（48）的物体（40; 46; 0; 52）。

4. 发明申请

WO2021079160A1 ULTRASONIC TRANSDUCERS 审中-公开
公开(公告)号：WO2021079160A1
公开(公告)日：2021-04-29
申请号：PCT/GB2020/052712
申请日：2020-10-26
申请人： SINTEF TTO AS , SAMUELS, Adrian James
发明人： TYHOLDT, Frode , VOGL, Andreas , DAHL, Tobias
IPC分类号： B06B1/06 , G01S15/89
摘要： A piezoelectric micro-machined ultrasonic transducer (PMUT) is provided, comprising a dedicated ultrasonic transmitter and at least one separate dedicated ultrasonic receiver on a single common semiconductor die. A plurality of PMUTs may be arranged in a tessellated array. Also disclosed is a system comprising at least one PMUT on a single common semiconductor die, a dedicated ultrasonic transmitter arranged to transmit a first ultrasonic signal and at least one separate dedicated ultrasonic receiver arranged to receive a second ultrasonic signal is also provided. The system further comprises a signal processing subsystem which comprises an analogue domain; a digital domain; a digital to analogue converter; and an analogue to digital converter. The signal processing subsystem is arranged to generate an estimated direct path signal in said digital domain, convert said estimated direct path signal to an analogue estimated direct path signal using said digital to analogue converter, subtract said analogue estimated direct path signal from said second signal to produce a modified received signal and convert said modified received signal to a digital modified received signal using said analogue to digital converter.

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