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1. 发明申请

US20110279916A1 SHAPE MEMORY ALLOY ACTUATION APPARATUS 有权
标题翻译：形状记忆合金执行装置
公开(公告)号：US20110279916A1
公开(公告)日：2011-11-17
申请号：US13146462
申请日：2010-01-27
申请人： Andrew Benjamin David Brown , Richard Topliss
发明人： Andrew Benjamin David Brown , Richard Topliss
IPC分类号： G02B7/04
CPC分类号： F03G7/065 , G02B7/08 , G03B3/10
摘要： An SMA actuation apparatus comprises a camera lens element supported on a support structure by a plurality of flexures. An SMA wire at an acute angle to the movement axis and a biassing element are connected between the support structure and the movable element. A component of the force applied by the SMA wire perpendicular to the movement axis compresses the flexures causing them to apply a force to the movable element having a component along the movement axis in the same direction as the SMA wire. An end-stop limits the movement of the movable element, and the moment applied by the end-stop to the movable element about the centre of stiffness is equal to the moment applied by the SMA wire about the centre of stiffness at the point when the movable element loses contact with the end-stop on contraction of the SMA wire.
摘要翻译： SMA致动装置包括通过多个挠曲件支撑在支撑结构上的照相机镜头元件。与运动轴成锐角的SMA线和偏置元件连接在支撑结构和可移动元件之间。由SMA线垂直于移动轴施加的力的分量压缩挠曲件，使得它们沿着与SMA线相同的方向沿着运动轴线向具有部件的可移动元件施加力。止挡限制了可移动元件的移动，并且由端部止动件围绕刚度中心施加到可移动元件的力矩等于SMA线围绕刚度中心处的刚度中心施加的力矩可移动元件与SMA线的收缩端止停止接触。

2. 发明申请

US20110277462A1 CONTROL OF A SHAPE MEMORY ALLOY ACTUATION ARRANGEMENT 有权
标题翻译：形状记忆合金执行安排的控制
公开(公告)号：US20110277462A1
公开(公告)日：2011-11-17
申请号：US13126401
申请日：2009-10-29
申请人： Thomas Matthew Gregory , Robert John Leedham , David Charles William Richards , Richard Topliss
发明人： Thomas Matthew Gregory , Robert John Leedham , David Charles William Richards , Richard Topliss
IPC分类号： F01B29/10
CPC分类号： F03G7/065 , G03B3/10 , H04N5/2254 , H04N5/2257
摘要： An SMA actuation apparatus comprises: an SMA actuator arranged to drive movement of a movable element; a current supply supplying a drive current; a detection circuit detecting a measure of the resistance of the SMA actuator; and a control unit operative to generate a closed-loop control signal supplied to current supply for controlling the power of the drive current to drive the resistance of the SMA actuator to a target value. The control unit derives: an estimate of a characteristic temperature of the SMA actuation apparatus on the basis of the supplied power, using a thermal model; and a resistance offset on the basis thereof. The closed-loop control signal is generated on the basis of the error between the measure of the resistance of the SMA actuator and the target value of the resistance of the SMA actuator, adjusted by the resistance offset to compensate for variations in resistance.
摘要翻译： SMA致动装置包括：SMA致动器，被布置成驱动可移动元件的运动; 提供驱动电流的电流源; 检测所述SMA致动器的电阻的测量电路; 以及控制单元，用于产生提供给电流源的闭环控制信号，以控制驱动电流的功率以将SMA致动器的电阻驱动到目标值。控制单元使用热模型来估计基于所提供的功率的SMA致动装置的特征温度; 和基于其的电阻偏移。基于SMA致动器的电阻的测量与SMA致动器的电阻的目标值之间的误差产生闭环控制信号，由电阻偏移调整以补偿电阻的变化。

3. 发明授权

US07974025B2 Shape memory alloy actuation apparatus 有权
标题翻译：形状记忆合金致动装置
公开(公告)号：US07974025B2
公开(公告)日：2011-07-05
申请号：US12596925
申请日：2008-04-22
申请人： Richard Topliss
发明人： Richard Topliss
IPC分类号： G02B7/02
CPC分类号： G03B3/10
摘要： A miniature camera lens actuation apparatus employs an SMA actuator comprising SMA wire to move a camera lens element. To provide autofocus, the SMA actuator is heated across its range of contraction and the resistance at which the focus is at an acceptable level is stored. To combat hysteresis, there is performed a flyback in which the SMA actuator is cooled, before heating the SMA actuator to the stored resistance. The stored resistance is adjusted to combat creep caused by non-linear heating of the SMA actuator. The SMA wire has conductive material extending along on a portion of the SMA wire which extends from a member connected to the SMA wire and being in electrical connection with the SMA wire in order to short out that portion of the SMA wire to reduce creep. Additional material is applied over the SMA wire and the member to reduce fatigue.
摘要翻译：微型相机镜头致动装置使用包括SMA线的SMA致动器来移动相机镜头元件。为了提供自动对焦，SMA致动器在其收缩范围内被加热，并且存储焦点处于可接受水平的电阻。为了对抗滞后，在将SMA致动器加热到存储的电阻之前，执行了一个反激式，其中SMA致动器被冷却。调整存储的电阻以抵抗由SMA致动器的非线性加热引起的蠕变。 SMA线具有沿着SMA线的一部分延伸的导电材料，SMA部分从连接到SMA线的部件延伸并且与SMA线电连接，以缩短SMA线的那部分以减少蠕变。额外的材料应用于SMA线和构件上以减少疲劳。

4. 发明授权

US07486004B2 Piezolelectric devices 失效
标题翻译：压电元件
公开(公告)号：US07486004B2
公开(公告)日：2009-02-03
申请号：US10493743
申请日：2002-10-28
申请人： James Allan , Gareth McKevitt , Mark Richard Shepherd , Richard Topliss
发明人： James Allan , Gareth McKevitt , Mark Richard Shepherd , Richard Topliss
IPC分类号： H01L41/08
CPC分类号： H01L41/0953 , H01L41/33
摘要： A piezoelectric device comprising a continuous piezoelectric element (10) extending alternately back and forth to form a plurality of parallel, straight portions (14) arranged in a stack with intermediate linkage portions (15) at alternate ends of the straight portions (14). Each straight portion (14) is constructed and arranged with electrodes (12, 13) to bend, on activation, in the stacking direction in which the straight portions (14) are stacked with opposite curvature in two halves (16, 17) of the straight portion (14) to create displacement between the ends of the straight portion (14) in the stacking direction adding in series through the stack. The continuous nature of the piezoelectric element (10) eases manufacture. Devices with two types of construction are disclosed. Firstly, the continuous piezoelectric element (10) may have a bender construction such as a bimorph bender construction. Secondly, the continuous piezoelectric element (101) may be a sheet of piezoelectric material having overlapping slits (102) extending from alternate sides to form the straight portions (103) between the slits (102), with opposed electrodes (105) arranged on each major surface of the sheet in pairs separated across, and extending along, the straight portions (103).
摘要翻译：一种压电装置，包括连续的压电元件（10），所述连续压电元件（10）交替地前后延伸以形成多个平行的直线部分（14），所述直的部分以直线部分（14）的交替端部处的中间连接部分（15）布置成堆叠。每个直线部分（14）被构造和布置成具有电极（12,13），在激活时，沿堆叠方向弯曲，其中直线部分（14）以相反的曲率堆叠在两个半部（16,17）中直线部分（14），以在堆叠方向上在直线部分（14）的端部之间产生位移，通过堆叠串联。压电元件（10）的连续性使制造变得容易。公开了具有两种结构类型的装置。首先，连续压电元件（10）可以具有诸如双压电晶片弯曲机结构的弯曲结构。其次，所述连续压电元件（101）可以是具有从交替侧延伸的重叠狭缝（102）的压电材料片，以在狭缝（102）之间形成直线部分（103），并且每个上设置有相对电极（105）片材的主表面成对地分离并且沿直线部分（103）延伸。

5. 发明申请

US20050040736A1 Piezoelectric structures 失效
标题翻译：压电结构
公开(公告)号：US20050040736A1
公开(公告)日：2005-02-24
申请号：US10491220
申请日：2002-09-26
申请人： Richard Topliss , David Livingstone , Andrew Matheson , Gareth McKevitt , Mark Shepherd , Anthony Hooley
发明人： Richard Topliss , David Livingstone , Andrew Matheson , Gareth McKevitt , Mark Shepherd , Anthony Hooley
IPC分类号： H01L41/09 , H01L41/187 , H01L41/22 , H02N2/00 , H01L41/08
CPC分类号： H01L41/094 , H01L41/098
摘要： An equivalent to the spatial separation either side of a nominal median plane that is inherent in a bimorph (with one piezoelectric layer on one side, and the second on the other side of the plane) is attained by structurally shaping the cross-section of a simple, single piezoelectric layer (11) such that it has a multiplicity of piezoelectric portions arranged in two generally-planar groups one either side of a median plane, so that any dimension change undergone by a portion on one side of that plane will tend to bend the whole device in the opposite direction to the same sense dimension change undergone by a portion on the other side of that plane. The simple, single layer acts as though it were a bimorph if elongate and beam-like, bending along its length, one end moving up/down, or back/forth, relative to the other but with any need for an internal, electrode.
摘要翻译：相当于双压电晶片中固有的标称中间平面的两侧（在一侧具有一个压电层，而在该平面的另一侧上的第二面）的空间分离是通过结构地成形一个简单的单个压电层（11），使得其具有多个压电部分，其布置在中间平面的任一侧上的两个大致平面的组中，使得由该平面的一侧上的部分所经历的任何尺寸变化将倾向于使整个设备沿与该平面另一侧的部分相同的感官尺寸变化的相反方向弯曲。简单的单层如同细长的和束状的，像其一样弯曲，一端向上/向下移动，或相对于另一端向前/向前弯曲，但是任何需要内部的电极。

6. 发明申请

US20140055630A1 OPTICAL IMAGE STABILISATION 有权
标题翻译：光学图像稳定
公开(公告)号：US20140055630A1
公开(公告)日：2014-02-27
申请号：US13825382
申请日：2011-09-22
申请人： Thomas Matthew Gregory , Richard Topliss
发明人： Thomas Matthew Gregory , Richard Topliss
IPC分类号： H04N5/232
CPC分类号： H04N5/23258 , F03G7/065 , G02B27/646 , G03B3/02 , G03B2205/0023 , G03B2205/0076 , H04N5/2257 , H04N5/23261 , H04N5/23287
摘要： A camera apparatus capable of providing optical image stabilisation comprises: a support structure; a camera unit comprising an image sensor and a lens system; a suspension system comprising a plurality of flexure elements supporting the camera unit on the support structure in a manner allowing the camera unit to tilt; and a plurality of SMA actuators. A sensor arrangement, whose output is used as the basis for generating drive signals, is mounted on the camera unit. A control circuit generates drive signals for the SMA actuators, by deriving closed-loop control signals representative of a desired degree of variation in the power of the drive signals from the output signals of the sensor arrangement without dependence on any measurement of the resistance of the SMA actuators, and generating the drive signals with powers that varies from a set-point power in correspondence with the closed-loop control signal.
摘要翻译：能够提供光学图像稳定性的相机装置包括：支撑结构; 包括图像传感器和透镜系统的相机单元; 一种悬挂系统，包括以允许相机单元倾斜的方式在支撑结构上支撑相机单元的多个挠曲元件; 和多个SMA致动器。将其输出用作产生驱动信号的基础的传感器装置安装在相机单元上。一个控制电路产生用于SMA致动器的驱动信号，通过从传感器装置的输出信号得出表示驱动信号的功率的期望变化程度的闭环控制信号，而不依赖于对传感器装置的电阻的任何测量 SMA致动器，并且产生具有与闭环控制信号对应的设定点功率变化的功率的驱动信号。

7. 发明申请

US20130002933A1 SMA ACTUATION APPARATUS 有权
标题翻译： SMA执行装置
公开(公告)号：US20130002933A1
公开(公告)日：2013-01-03
申请号：US13581150
申请日：2011-02-28
申请人： Richard Topliss , Andrew Benjamin David Brown
发明人： Richard Topliss , Andrew Benjamin David Brown
IPC分类号： H02N10/00 , H04N5/232
CPC分类号： G03B3/10 , G02B7/005 , G02B7/08 , G02B27/646 , H04N5/2254 , H04N5/23287
摘要： An SMA actuation apparatus uses SMA actuator wires to move a movable element supported on a support structure, for example to provide optical image stabilisation. Eight SMA actuator wires are arranged inclined with respect to a notional primary axis with a pair of the SMA actuator wires on each of four sides around the primary axis. The SMA actuators are connected so that on contraction two groups of four SMA actuator wires provide a force with a component in opposite directions along the primary axis, so that the groups are capable of providing movement along the primary axis. The SMA actuator wires of each group have 2-fold rotational symmetry about the primary axis, so that there are SMA actuator wires opposing each other that are capable of providing lateral movement or tilting.
摘要翻译： SMA致动装置使用SMA致动器线来移动支撑在支撑结构上的可移动元件，例如以提供光学图像稳定。八个SMA致动器线相对于概念主轴倾斜地布置，在主轴上的四个侧面中的每一侧上具有一对SMA致动器线。 SMA致动器被连接，使得在收缩时，两组四个SMA致动器线沿着主轴线向相反方向提供与部件成比例的力，使得这些组能够沿主轴提供运动。每个组的SMA致动器导线围绕主轴线具有2倍的旋转对称性，使得存在能够提供横向运动或倾斜的彼此相对的SMA致动器线。

8. 发明申请

US20100283887A1 SHAPE MEMORY ALLOY ACTUATION APPARATUS 有权
标题翻译：形状记忆合金执行装置
公开(公告)号：US20100283887A1
公开(公告)日：2010-11-11
申请号：US12740488
申请日：2008-10-30
申请人： Richard Topliss , Dominic George Webber
发明人： Richard Topliss , Dominic George Webber
IPC分类号： H04N5/232 , F03G7/06 , G02B7/02
CPC分类号： F03G7/065 , G02B7/08 , G03B3/10 , H04N5/2257
摘要： A shape memory alloy actuation apparatus comprises a movable element supported on a support structure by a suspension system comprising a plurality of resilient flexures. A shape memory alloy actuator drives movement of the movable element on contraction. An end-stop limits the movement of the movable element in the opposite direction. Rather than using the resilient flexures of the suspension system as the sole biassing means, an additional Massing element biasses the movable element against the SMA actuator. When the moveable element is held against the end-stop, the force applied by the biassing element is greater than the force applied by the flexures of the suspension system. This reduces the design constraints, for example allowing a greater range of movement.
摘要翻译：形状记忆合金致动装置包括通过包括多个弹性挠曲的悬架系统支撑在支撑结构上的可移动元件。形状记忆合金致动器驱动可动元件的收缩运动。终点限制可移动元件在相反方向上的运动。除了使用悬架系统的弹性挠曲件作为唯一的偏置装置之外，附加的质量元件将可移动元件偏压抵靠SMA致动器。当可移动元件抵靠端挡时，由偏置元件施加的力大于由悬架系统的挠曲力施加的力。这减少了设计限制，例如允许更大的移动范围。

9. 发明申请

US20090295986A1 CAMERA LENS ACTUATION APPARATUS 有权
标题翻译：摄像机镜头执行装置
公开(公告)号：US20090295986A1
公开(公告)日：2009-12-03
申请号：US12295382
申请日：2007-03-23
申请人： Richard Topliss , David Livingstone , Robert John Leedham
发明人： Richard Topliss , David Livingstone , Robert John Leedham
IPC分类号： H04N5/225
CPC分类号： G03B13/34 , F03G7/065 , G02B7/023 , G02B7/026 , G02B7/08 , G02B13/001
摘要： A camera lens actuation apparatus for driving motion of a camera lens supported on a support structure by a suspension system. The apparatus incorporates a subassembly comprising SMA wire connected to at least one mounting member which is mounted to the support structure. At least one pair of lengths of SMA wire are held in tension between the camera lens element and the support structure at respective acute angles to the optical axis applying a tensional force having a component along the optical axis. The lengths of SMA wire in the pair are held at angle as viewed along the optical axis. There may be plural pairs with a balanced arrangement in which the forces generated have no net component perpendicular to the optical axis and generate no net torque around any axis perpendicular to the optical axis. A control circuit controls heating of the SMA wire in response to a measure of its resistance.
摘要翻译：一种用于通过悬挂系统驱动支撑在支撑结构上的相机镜头的运动的相机镜头致动装置。该装置包括一个子组件，该子组件包括连接到至少一个安装到支撑结构上的安装构件的SMA线。至少一对长度的SMA线在照相机透镜元件和支撑结构之间以相对于光轴的锐角保持张力，施加具有沿着光轴的分量的张力。一对SMA中的SMA线的长度保持为沿着光轴的角度。可以存在具有平衡布置的多对，其中产生的力没有垂直于光轴的网分量，并且不围绕垂直于光轴的任何轴线产生净转矩。控制电路响应于其电阻的测量来控制SMA线的加热。

10. 发明授权

US07161279B2 Curved electro-active actuators 失效
标题翻译：弯曲电动执行器
公开(公告)号：US07161279B2
公开(公告)日：2007-01-09
申请号：US10494138
申请日：2002-10-30
申请人： Richard Topliss , Neel Bhalsod , Mark Richard Shepherd
发明人： Richard Topliss , Neel Bhalsod , Mark Richard Shepherd
IPC分类号： H01L41/08
CPC分类号： H01L41/0953 , H01L41/092
摘要： Electro-active actuators (310) and methods of manufacturing such actuators are described with such actuators (310) having a plurality of electro-active segments (311) arranged along a curved line with each segment (311) being essentially planar and coupled to adjacent segments (311) through joint sections (312) placed at opposite corners of the segment (311). The actuators (310) exhibit a displacement in a different direction than the direction of displacement of a segment when seen in isolation. They can be made from a continuous tape of material, preferably by die punching.
摘要翻译：使用具有沿着曲线布置的多个电活动段（311）的这种致动器（310）来描述电活动致动器（310）和制造这种致动器的方法，每个段（311）基本上是平面的并且被耦合到相邻通过放置在段（311）的相对拐角处的接合部分（312）的段（311）。当孤立地看到时，致动器（310）在与段的位移方向不同的方向上表现出位移。它们可以由连续的材料带制成，优选通过冲模制成。

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