Thin film ultrasound transducer
    8.
    发明授权
    Thin film ultrasound transducer 有权
    薄膜超声波换能器

    公开(公告)号:US09440258B2

    公开(公告)日:2016-09-13

    申请号:US13812640

    申请日:2011-07-12

    IPC分类号: B06B1/06

    摘要: The present invention relates to a transducer (11) comprising—a membrane (31) configured to change shape in response to a force, the membrane (31) having a first major surface (16) and a second major surface (17), —a piezoelectric layer (18) formed over the first major surface (16) of the membrane (31), the piezoelectric layer (18) having an active portion, —first and second electrodes (19) in contact with the piezoelectric layer (18), wherein an electric field between the first and second electrodes (19) determines the mechanical movement of the piezoelectric layer (18), —support structures (40) at the second major surface (17) of the membrane (15) on adjacent sides of the active portion of the piezoelectric layer (18), at least part of the support structures (40) forming walls perpendicular, or at least not parallel, to the second major surface (17) of the membrane (31), so as to form a trench (41) of any shape underlying the active portion, so that an ultrasound transducer is obtained with a high output pressure at the support side than at the opposite side. The invention also relates to a method of forming such a transducer, and an array comprising at least one transducer of the like.

    摘要翻译: 本发明涉及一种换能器(11),其包括 - 被配置为响应于力而改变形状的膜(31),所述膜(31)具有第一主表面(16)和第二主表面(17), - 形成在膜(31)的第一主表面(16)上方的压电层(18),压电层(18)具有有源部分,与压电层(18)接触的第一和第二电极(19) ,其中所述第一和第二电极(19)之间的电场确定所述压电层(18)的机械运动, - 在所述膜(15)的相邻侧上的所述膜(15)的第二主表面(17)处支撑结构(40) 压电层(18)的有效部分,至少部分支撑结构(40)形成与膜(31)的第二主表面(17)垂直或至少不平行的壁,以便形成 在活动部分下方的任何形状的沟槽(41),使得超声波换能器 s在支撑侧的高输出压力获得,而不是在相对侧。 本发明还涉及一种形成这种换能器的方法,以及包括至少一个这样的换能器的阵列。

    THIN FILM ULTRASOUND TRANSDUCER
    9.
    发明申请
    THIN FILM ULTRASOUND TRANSDUCER 有权
    薄膜超声波传感器

    公开(公告)号:US20130208572A1

    公开(公告)日:2013-08-15

    申请号:US13812640

    申请日:2011-07-12

    IPC分类号: B06B1/06

    摘要: The present invention relates to a transducer (11) comprising—a membrane (31) configured to change shape in response to a force, the membrane (31) having a first major surface (16) and a second major surface (17),—a piezoelectric layer (18) formed over the first major surface (16) of the membrane (31), the piezoelectric layer (18) having an active portion,—first and second electrodes (19) in contact with the piezoelectric layer (18), wherein an electric field between the first and second electrodes (19) determines the mechanical movement of the piezoelectric layer (18),—support structures (40) at the second major surface (17) of the membrane (15) on adjacent sides of the active portion of the piezoelectric layer (18), at least part of the support structures (40) forming walls perpendicular, or at least not parallel, to the second major surface (17) of the membrane (31), so as to form a trench (41) of any shape underlying the active portion, so that an ultrasound transducer is obtained with a high output pressure at the support side than at the opposite side. The invention also relates to a method of forming such a transducer, and an array comprising at least one transducer of the like.

    摘要翻译: 本发明涉及一种换能器(11),其包括 - 被配置为响应于力而改变形状的膜(31),所述膜(31)具有第一主表面(16)和第二主表面(17), - 形成在膜(31)的第一主表面(16)上方的压电层(18),压电层(18)具有有源部分,与压电层(18)接触的第一和第二电极(19) ,其中所述第一和第二电极(19)之间的电场确定所述压电层(18)的机械运动, - 在膜(15)的相邻侧上的第二主表面(17)处的支撑结构(40) 压电层(18)的有效部分,至少部分支撑结构(40)形成与膜(31)的第二主表面(17)垂直或至少不平行的壁,以便形成 在活动部分下方具有任何形状的沟槽(41),从而获得超声换能器 在支撑侧具有高于相对侧的高输出压力。 本发明还涉及一种形成这种换能器的方法,以及包括至少一个这样的换能器的阵列。

    Presence detection system and lighting system comprising such system
    10.
    发明授权
    Presence detection system and lighting system comprising such system 有权
    存在检测系统和包括该系统的照明系统

    公开(公告)号:US08866619B2

    公开(公告)日:2014-10-21

    申请号:US13576960

    申请日:2011-01-28

    IPC分类号: G08B23/00 H05B37/02

    摘要: A presence detection system (1) for detecting a presence of an object (3), particularly a person or an animal or vehicle, within an area (5) divided in detection zones (9A;9B;9C;9D) covering the area. The system comprises a movement detection device (11A;11B;11C;11D) for detecting a movement of the object. The system further comprises an electronic processing device (13) for storing information relating to a position of the object in a zone-wise way, based on a detected movement of the object. The electronic processing device is configured for determining the presence of the object within the area based on a detected movement of the object and stored information relating to the position of the object. The system is highly sensitive and highly prevents false presence detections. The invention also relates to a method for presence detection, and a lighting system comprising the presence detection system.

    摘要翻译: 一种在覆盖该区域的检测区域(9A; 9B; 9C; 9D)中的区域(5)内检测物体(3),特别是人或动物或车辆的存在的存在检测系统(1)。 该系统包括用于检测物体的运动的运动检测装置(11A; 11B; 11C; 11D)。 该系统还包括一个电子处理装置(13),用于基于检测到的对象的移动来以区域方式存储与对象的位置有关的信息。 电子处理装置被配置为基于检测到的对象的移动和存储与对象的位置有关的信息来确定区域内的对象的存在。 该系统高度敏感,并高度防止虚假存在检测。 本发明还涉及一种用于存在检测的方法,以及包括该存在检测系统的照明系统。