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1. 发明授权

US5442592A Ultrasonic distance meter 失效
标题翻译：超声波测距仪
公开(公告)号：US5442592A
公开(公告)日：1995-08-15
申请号：US193345
申请日：1994-02-08
申请人： Minoru Toda , Kyung T. Park
发明人： Minoru Toda , Kyung T. Park
IPC分类号： G01B17/00 , G01N29/32 , G01S1/74 , G01S11/14 , G01N29/00
CPC分类号： G01B17/00 , G01N29/32 , G01N29/326 , G01S1/74 , G01S11/14 , Y10S367/902
摘要： An ultrasonic distance meter cancels out the effects of temperature and humidity variations by including a measuring unit and a reference unit. In each of the units, a repetitive series of pulses is generated, each having a repetition rate directly related to the respective distance between an electroacoustic transmitter and an electroacoustic receiver. The pulse trains are provided to respective counters, and the ratio of the counter outputs is utilized to determine the distance being measured.
摘要翻译：超声波距离仪通过包括测量单元和参考单元来消除温度和湿度变化的影响。在每个单元中，产生重复的一系列脉冲，每个脉冲具有与电声发射器和电声接收器之间的相应距离直接相关的重复率。将脉冲序列提供给相应的计数器，并且利用计数器输出的比率来确定被测量的距离。

2. 发明授权

US5483501A Short distance ultrasonic distance meter 失效
标题翻译：短距离超声波距离计
公开(公告)号：US5483501A
公开(公告)日：1996-01-09
申请号：US236907
申请日：1994-04-29
申请人： Kyung T. Park , Minoru Toda
发明人： Kyung T. Park , Minoru Toda
IPC分类号： H04R17/00 , B06B1/06 , G01D5/48 , G01D11/24 , G01S7/521 , G01S7/524 , G01S15/02 , G01S15/04 , G01S15/87 , G01S15/93 , G10K9/125
CPC分类号： G01S15/931 , B06B1/0688 , G01D11/245 , G01D5/48 , G01S15/02 , G01S15/87 , G01S7/521 , G01S7/524 , G10K9/125 , G01S2015/938 , Y10S310/80
摘要： A short distance ultrasonic distance meter is disclosed with provisions to reduce the ill-effects of ringing when measurements are of obstacles closer than about ten inches. In one embodiment an opposite phase ultrasonic wave is introduced by a circuit (245) and in another embodiment a strain sensor (232) introduces negative feedback to effect cancellation of ringing (147). Finally, in a third embodiment, both the negative feedback and opposite phase methods are employed for optimal results.
摘要翻译：公开了一种短距离超声波距离计，用于在测量距离近于10英寸的障碍物时减少振铃的不良影响。在一个实施例中，相位相位超声波由电路（245）引入，在另一个实施例中，应变传感器（232）引入负反馈以实现振铃消除（147）。最后，在第三实施例中，采用负反馈和反相方法来获得最佳结果。

3. 发明授权

US5515341A Proximity sensor utilizing polymer piezoelectric film 失效
标题翻译：使用聚合物压电薄膜的接近传感器
公开(公告)号：US5515341A
公开(公告)日：1996-05-07
申请号：US121392
申请日：1993-09-14
申请人： Minoru Toda , Kyung T. Park , Albert Casciotti
发明人： Minoru Toda , Kyung T. Park , Albert Casciotti
IPC分类号： H04R17/00 , B06B1/06 , G01D5/48 , G01D11/24 , G01S7/521 , G01S7/524 , G01S15/02 , G01S15/04 , G01S15/87 , G01S15/93 , G10K9/125
CPC分类号： G01S15/931 , B06B1/0688 , G01D11/245 , G01D5/48 , G01S15/02 , G01S15/87 , G01S7/521 , G01S7/524 , G10K9/125 , G01S2015/938 , Y10S310/80 , Y10S367/908 , Y10S367/909
摘要： A transducer assembly for a proximity sensor which comprises an elongated polymer piezoelectric film (16). The film is supported as an elongated series of arcuate segments which are curved in the same direction and have the same radius of curvature. Electrodes (18) on both sides of the piezoelectric film form opposed pairs, each pair being associated with a respective arcuate segment. The electrodes are utilized for applying a varying electric field across the thickness of the film to cause an ultrasonic acoustic wave to be radiated from the film.
摘要翻译：一种用于接近传感器的换能器组件，其包括细长的聚合物压电薄膜（16）。该薄膜被支撑为一个细长的弧形段，它们沿同一方向弯曲并具有相同的曲率半径。压电薄膜两侧的电极（18）形成相对的对，每一对与相应的弧形段相关联。电极用于在膜的厚度上施加变化的电场，以使超声波从薄膜辐射。

4. 发明授权

US5495137A Proximity sensor utilizing polymer piezoelectric film with protective metal layer 失效
标题翻译：接近传感器采用具有保护金属层的聚合物压电薄膜
公开(公告)号：US5495137A
公开(公告)日：1996-02-27
申请号：US298864
申请日：1994-08-31
申请人： Kyung T. Park , Minoru Toda
发明人： Kyung T. Park , Minoru Toda
IPC分类号： H04R17/00 , B06B1/06 , G01D5/48 , G01D11/24 , G01S7/521 , G01S7/524 , G01S15/02 , G01S15/04 , G01S15/87 , G01S15/93 , G10K9/125 , H01L41/08
CPC分类号： B06B1/0688 , B06B1/0692 , G01D11/245 , G01D5/48 , G01S15/02 , G01S15/87 , G01S15/931 , G01S7/521 , G01S7/524 , G10K9/125 , G01S2015/938 , Y10S310/80
摘要： An ultrasonic proximity sensor particularly suited for outdoor environments having a transducer including a polymer piezoelectric film bonded to a protective metal layer. The transducer is mounted in the sensor housing so that the protective metal layer is exposed to the environment through a window of the sensor housing. The transducer can be implemented as an asymmetric bimorph structure, having an electrode bonded to a surface of the polymer piezoelectric film opposite the protective metal layer and between support members. Deformation of the polymer piezoelectric film between the protective metal layer and the electrode occurs upon application of a voltage thereto, generating an ultrasonic wave. The transducer can also be used as a receiver, generating an output voltage from the electrode upon impingement of an ultrasonic wave upon the protective metal layer. The transducer can also be implemented as a curved length mode transducer including an arcuate shaped support member for supporting the polymer piezoelectric film to be curved between the support members. The radius of the curved length mode transducer is selected so that the transducer can be resonant at the resonance frequency of the curved length mode, therefore vibrating at high frequency to generate an ultrasonic wave.
摘要翻译：一种超声波接近传感器，特别适用于具有结合到保护金属层的聚合物压电膜的换能器的户外环境。传感器安装在传感器外壳中，使保护金属层通过传感器外壳的窗户暴露在环境中。换能器可以实现为不对称双压电晶片结构，其电极结合到与保护金属层相对的聚合物压电薄膜的表面和支撑构件之间。在保护金属层和电极之间的聚合物压电膜的变形在施加电压时发生，产生超声波。换能器也可以用作接收器，在超声波撞击保护金属层时，从电极产生输出电压。换能器还可以实现为弯曲长度模式换能器，其包括用于支撑聚合物压电膜以在支撑构件之间弯曲的弓形支撑构件。选择弯曲长度模式换能器的半径，使得换能器可以在弯曲长度模式的共振频率下共振，因此以高频振动以产生超声波。

5. 发明申请

US20130002094A1 MULTILAYER ACOUSTIC IMPEDANCE CONVERTER FOR ULTRASONIC TRANSDUCERS 有权
标题翻译：用于超声波传感器的多层阻抗转换器
公开(公告)号：US20130002094A1
公开(公告)日：2013-01-03
申请号：US13609946
申请日：2012-09-11
申请人： Minoru Toda , Mitchell L. Thompson
发明人： Minoru Toda , Mitchell L. Thompson
IPC分类号： H01L41/04
CPC分类号： H01L41/22 , B06B1/0622 , B06B1/0644 , B06B1/0685 , G10K11/02 , Y10T29/42
摘要： An impedance conversion layer useful for medical imaging ultrasonic transducers comprises a low impedance polymer layer and a high impedance metal layer. These layers are combined with corresponding thicknesses adapted to provide a function of converting from a specific high impedance to specific low impedance, wherein the polymer layer is at the high impedance side and the metal layer is at the low impedance side. The effective acoustic impedance of the polymer and metal layer combination may be adapted to configure an impedance converter in the same way as a quarter wavelength impedance converter, converting from low impedance to high impedance (metal to polymer) or from a high impedance to low impedance (polymer to metal). This structure may be used for front matching with the propagation medium and back matching with an absorber for ultrasonic transducers.
摘要翻译：用于医学成像超声换能器的阻抗转换层包括低阻抗聚合物层和高阻抗金属层。这些层与适于提供从特定高阻抗转换为特定低阻抗的功能的相应厚度组合，其中聚合物层处于高阻抗侧，并且金属层处于低阻抗侧。聚合物和金属层组合的有效声阻抗可适用于以与四分之一波长阻抗转换器相同的方式配置阻抗转换器，从低阻抗转换为高阻抗（金属至聚合物）或从高阻抗转换为低阻抗（聚合物与金属）。该结构可以用于与传播介质的前匹配以及用于超声波换能器的吸收器的后匹配。

6. 发明授权

US07342350B2 Handheld device having ultrasonic transducer for axial transmission of acoustic signals 有权
标题翻译：具有用于声学信号的轴向传播的超声波换能器的手持式装置
公开(公告)号：US07342350B2
公开(公告)日：2008-03-11
申请号：US11504306
申请日：2006-08-15
申请人： Minoru Toda
发明人： Minoru Toda
IPC分类号： G09G5/00 , H01L41/08
CPC分类号： G06F3/03545 , A61B8/4209 , B06B1/0655 , B06B1/0688 , Y10S310/80
摘要： A handheld stylus having an elongated housing, a writing and drawing implement disposed within the housing and including a tip extending through an opening at an end of the housing where ultrasonic waves radiate therefrom and are used for determining a position of the stylus; and at least one ultrasonic transducer disposed within the housing. The transducer may be a cylindrical piezoelectric transducer having a holder and a cylindrical piezoelectric film spanning between at least two spaced apart cylindrical surfaces of the holder, or a flat transducer having a diaphragm, and a piezoelectric material disposed on a surface of the diaphragm.
摘要翻译：一种具有细长壳体的手持式触控笔，设置在壳体内的书写和绘图工具，包括一个尖端，该尖端延伸穿过外壳的端部处的一个开口，超声波从其中辐射出来，用于确定触针的位置; 以及设置在所述壳体内的至少一个超声换能器。传感器可以是圆柱形压电换能器，其具有保持器和跨过保持器的至少两个间隔开的圆柱形表面之间的圆柱形压电薄膜，或具有隔膜的平坦换能器以及设置在隔膜表面上的压电材料。

7. 发明授权

US06504289B2 Piezeoelectric transducer having protuberances for transmitting acoustic energy and method of making the same 失效
公开(公告)号：US06504289B2
公开(公告)日：2003-01-07
申请号：US09954811
申请日：2001-09-17
申请人： Minoru Toda , Kyung-Tae Park , Jeffrey D. Swan
发明人： Minoru Toda , Kyung-Tae Park , Jeffrey D. Swan
IPC分类号： H01L4108
CPC分类号： H01L41/45 , B06B1/0688 , Y10S310/80 , Y10T29/42
摘要： A method of forming an ultrasound transducer having thermoformed protuberances comprises providing a substrate having a plurality of perforations of a given dimension. The perforations or apertures are formed in the substrate and operate to determine the resonance frequency associated with the transducer. A film of polymeric material capable of showing piezoelectric properties when strained in its plane and electrically biassed by a field applied in a direction normal to its faces, is then laminated onto the substrate. The film is heated to a given temperature and a pressure differential is applied between the top and bottom surfaces of the film for a sufficient time to form protuberances in the film through the apertures in the substrate. The film is then cooled to a given ambient temperature while maintaining a pressure differential between the top and bottom surfaces of the film for a sufficient time until the ambient temperature is reached so as to cause the protuberances to maintain a substantially permanent curvature.

8. 发明授权

US06400065B1 Omni-directional ultrasonic transducer apparatus and staking method 失效
标题翻译：全方向超声波换能器和放样方法
公开(公告)号：US06400065B1
公开(公告)日：2002-06-04
申请号：US09281247
申请日：1999-03-30
申请人： Minoru Toda , Kyung-Tae Park , Susan Huang Zaks , Jeffrey D. Swan
发明人： Minoru Toda , Kyung-Tae Park , Susan Huang Zaks , Jeffrey D. Swan
IPC分类号： H01L4108
CPC分类号： B06B1/0688 , B06B1/0655 , Y10S310/80
摘要： A transducer apparatus is disclosed having a spool member with a body portion and first and second elevated regions formed on the body portion. A PVDF film surrounds the spool member, the film including an inner surface facing the spool member and an outer surface opposite the inner surface. The film as surrounding the spool member has a predetermined frequency of resonance. Lateral ends of the film are secured together by a securing material. The securing material is such that the secured ends of the film will have substantially the same resonance frequency as a remainder of the film. The film includes a non-electrode area at a perimeter of the inner surface and an electrode material formed on a remainder of the inner surface. Upon securing the lateral edges of the film together, the securement is at overlapping non-electrode lateral edges of the film. The securing material may be any one of an adhesive in combination with screws or thermally deformable nails, adhesive alone, tape, or ultrasonic welding.
摘要翻译：公开了一种换能器装置，其具有带主体部分的卷轴部件和形成在主体部分上的第一和第二升高部分。 PVDF膜围绕卷轴构件，膜包括面向卷轴构件的内表面和与内表面相对的外表面。围绕卷轴构件的薄膜具有预定的共振频率。膜的侧端通过固定材料固定在一起。固定材料使得薄膜的固定端部将具有与薄膜的其余部分基本相同的共振频率。该膜包括在内表面的周边处的非电极区域和形成在内表面的其余部分上的电极材料。在将膜的侧边缘固定在一起时，固定件位于膜的重叠非电极侧边缘处。固定材料可以是与螺钉或热变形钉，粘合剂单独，胶带或超声波焊接组合的粘合剂中的任何一种。

9. 发明授权

US06321428B1 Method of making a piezoelectric transducer having protuberances for transmitting acoustic energy 失效
标题翻译：制造具有用于传输声能的突起的压电换能器的方法
公开(公告)号：US06321428B1
公开(公告)日：2001-11-27
申请号：US09537199
申请日：2000-03-28
申请人： Minoru Toda , Kyung-Tae Park , Jeffrey D. Swan
发明人： Minoru Toda , Kyung-Tae Park , Jeffrey D. Swan
IPC分类号： H01L4100
CPC分类号： H01L41/45 , B06B1/0688 , Y10S310/80 , Y10T29/42
摘要： A method of forming an ultrasound transducer having thermoformed protuberances comprises providing a substrate having a plurality of perforations of a given dimension. The perforations or apertures are formed in the substrate and operate to determine the resonance frequency associated with the transducer. A film of polymeric material capable of showing piezoelectric properties when strained in its plane and electrically biassed by a field applied in a direction normal to its faces, is then laminated onto the substrate. The film is heated to a given temperature and a pressure differential is applied between the top and bottom surfaces of the film for a sufficient time to form protuberances in the film through the apertures in the substrate. The film is then cooled to a given ambient temperature while maintaining a pressure differential between the top and bottom surfaces of the film for a sufficient time until the ambient temperature is reached so as to cause the protuberances to maintain a substantially permanent curvature.
摘要翻译：形成具有热成型突起的超声换能器的方法包括提供具有给定尺寸的多个穿孔的基底。穿孔或孔形成在衬底中并且用于确定与换能器相关联的共振频率。然后将一层聚合材料的薄膜层压到基底上，该薄膜能够在其平面中应变并且通过沿垂直于其表面的方向施加电场而被电气偏压时显示出压电特性。将膜加热到给定温度，并且在膜的顶表面和底表面之间施加压差足够的时间以通过基底中的孔在膜中形成突起。然后将膜冷却到给定的环境温度，同时保持膜的顶表面和底表面之间的压力差足够的时间直到达到环境温度，以使得突起保持基本上永久的曲率。

10. 发明授权

US4942366A Amplifier device with coupled surface emitting grating 失效
标题翻译：具有耦合表面发射光栅的放大器器件
公开(公告)号：US4942366A
公开(公告)日：1990-07-17
申请号：US326714
申请日：1989-03-21
申请人： Minoru Toda
发明人： Minoru Toda
IPC分类号： G02B6/122 , G02B6/12 , G02F1/35 , H01S3/06 , H01S3/08 , H01S3/10 , H01S5/00 , H01S5/10 , H01S5/187 , H01S5/50
CPC分类号： H01S5/10 , H01S5/187 , H01S5/50
摘要： A surface emitting grating is coupled to an optical amplifier and has grating elements tilted non-normal relative to the amplifier optical axis. The angle of tilt in one embodiment is such that the grating reflections are refracted out of the amplifier region. The amplifier may have a tilted light receiving end serving as an input port in a second embodiment to cause internal reflections from the grating to be reflected to an amplifier boundary at an angle greater than the critical angle to cause the reflections to pass out of the amplifier region. In the latter embodiment, the grating tilt angle is minimized to reduce the surface emission beam angle tilt from the normal to a relatively small angle.
摘要翻译：表面发射光栅耦合到光放大器，并且具有相对于放大器光轴倾斜非正常的光栅元件。一个实施例中的倾斜角度使得光栅反射被折射出放大器区域。在第二实施例中，放大器可以具有用作输入端口的倾斜光接收端，以使得来自光栅的内部反射以大于临界角的角度被反射到放大器边界，以使反射从放大器地区。在后一个实施例中，光栅倾斜角被最小化以将表面发射光束角度从正常角度倾斜到相对较小的角度。

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