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    • 2. 发明申请
    • Optical Modulation
    • 光调制
    • US20080239457A1
    • 2008-10-02
    • US12090313
    • 2006-10-19
    • Andrew Maxwell ScottMark Edward McNieKevin Michael Brunson
    • Andrew Maxwell ScottMark Edward McNieKevin Michael Brunson
    • G02B26/00
    • G02B26/001
    • An optical modulator comprising a spacing-controllable etalon having at least one sprung micro-mirror suspended above a substrate. At least one electrically insulating stop is provided between the micro-mirror and the substrate to avoid short-circuit when the micro-mirror is drawn towards the substrate by an applied voltage. An optical detector detects the time of arrival of a first laser pulse. A control circuit predicts from this an arrival time of the next incident laser pulse and, responsive to a control signal, either retains the micro-mirror in its pulled-down state held against the insulating stops or releases the micro-mirror at a time predicted to maximise or minimise the light transmitted through the modulator. After a time interval calculated to permit a predetermined number of mechanical oscillations, the micro-mirror is pulled back down onto the stops.
    • 一种光学调制器,其包括间隔可控的标准具,其具有悬挂在衬底上的至少一个弹簧微镜。 在微反射镜和基板之间设置至少一个电绝缘止动件,以避免当微镜被施加电压朝向衬底拉动时短路。 光检测器检测第一激光脉冲的到达时间。 控制电路从此预测下一个入射激光脉冲的到达时间,并且响应于控制信号,将微镜保持在其抵抗绝缘停止的下拉状态或在预测的时间释放微镜 以最大化或最小化透过调制器的光。 在计算出允许预定数量的机械振荡的时间间隔之后,微镜被拉回到停止点上。
    • 4. 发明授权
    • Optical modulation
    • 光调制
    • US07940446B2
    • 2011-05-10
    • US12090313
    • 2006-10-19
    • Andrew Maxwell ScottMark Edward McNieKevin Michael Brunson
    • Andrew Maxwell ScottMark Edward McNieKevin Michael Brunson
    • G02F1/03
    • G02B26/001
    • An optical modulator comprising a spacing-controllable etalon having at least one sprung micro-mirror suspended above a substrate. At least one electrically insulating stop is provided between the micro-mirror and the substrate to avoid short-circuit when the micro-mirror is drawn towards the substrate by an applied voltage. An optical detector detects the time of arrival of a first laser pulse. A control circuit predicts from this an arrival time of the next incident laser pulse and, responsive to a control signal, either retains the micro-mirror in its pulled-down state held against the insulating stops or releases the micro-mirror at a time predicted to maximise or minimise the light transmitted through the modulator. After a time interval calculated to permit a predetermined number of mechanical oscillations, the micro-mirror is pulled back down onto the stops.
    • 一种光学调制器,其包括间隔可控的标准具,其具有悬挂在衬底上的至少一个弹簧微镜。 在微反射镜和基板之间设置至少一个电绝缘止动件,以避免当微镜被施加电压朝向衬底拉动时短路。 光检测器检测第一激光脉冲的到达时间。 控制电路从此预测下一个入射激光脉冲的到达时间,并且响应于控制信号,将微镜保持在其抵抗绝缘停止的下拉状态或在预测的时间释放微镜 以最大化或最小化透过调制器的光。 在计算出允许预定数量的机械振荡的时间间隔之后,微镜被拉回到停止点上。
    • 5. 发明授权
    • Method of fabricating micro-electromechanical systems
    • 制造微机电系统的方法
    • US07205173B2
    • 2007-04-17
    • US10508129
    • 2003-03-19
    • Kevin Michael BrunsonDavid James HamiltonRobert John Tremayne BunyanMark Edward McNie
    • Kevin Michael BrunsonDavid James HamiltonRobert John Tremayne BunyanMark Edward McNie
    • H01L21/00
    • B81C1/00246B81C2203/0735
    • A MEMS incorporating a sensing element and a JFET electrically connected to the sensing element is fabricated by the steps of: forming a first layer of electrically insulating barrier material on a surface of a substrate; patterning the first layer so as to expose a first region of the substrate; doping by ion implantation the first region of the substrate to form a well region of the JFET; forming a second layer of barrier material on the surface of both the first layer and the first region of the substrate; patterning the barrier material so as to expose a part of the first region of the substrate; doping by ion implantation the exposed part of the first region of the substrate to form source and drain contact areas of the JFET; patterning the barrier material so as to expose a second region of the substrate; and doping by ion implantation the second region of the substrate to form gate and substrate contact areas of the JFET in a single implantion step. The monolithic integration of the JFET with the MEMS enables the bond wires for interconnecting the sensing element and the associated sensing electronic circuitry to be provided only after the buffering stage of such circuitry. This means that the bond wires interconnecting the buffering stage and the remainder of the circuitry are connected to a low impedance node which is less sensitive to noise and parasitic capacitive loading. Thus greater detection accuracy can be achieved by virtue of the fact that the parasitic capacitances are reduced to a minimum.
    • 通过以下步骤制造结合感测元件和电连接到感测元件的JFET的MEMS:在衬底的表面上形成第一层电绝缘阻挡材料; 图案化第一层以暴露衬底的第一区域; 通过离子注入掺杂衬底的第一区域以形成JFET的阱区; 在所述基板的所述第一层和所述第一区域的表面上形成第二层阻挡材料; 图案化所述阻挡材料以暴露所述基板的所述第一区域的一部分; 通过离子注入掺杂衬底的第一区域的暴露部分以形成JFET的源极和漏极接触区域; 图案化阻挡材料以暴露衬底的第二区域; 以及通过离子注入掺杂衬底的第二区域,以在单个注入步骤中形成JFET的栅极和衬底接触区域。 JFET与MEMS的单片集成使得仅在这种电路的缓冲级之后才提供用于将感测元件和相关联的感测电子电路互连的接合线。 这意味着将缓冲级和电路的其余部分互连的接合线连接到对噪声和寄生电容负载较不敏感的低阻抗节点。 因此,通过将寄生电容减小到最小的事实可以实现更高的检测精度。