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公开(公告)号：US4424465A
公开(公告)日：1984-01-03
申请号：US434713
申请日：1982-10-15
CPC分类号： B06B1/0622 , Y10S310/80
摘要： A piezoelectric vibration transducer is disclosed which includes a polymeric piezoelectric film as the active element. The film is a selectively or fully polarized, uniaxially oriented material selected from the group of polyvinylidene fluoride, blended material such as polyvinylidene fluoride and PZT powder, polyvinyl fluoride, polyacrylonitrile, copolymers or vinylidene fluoride such as vinylidene fluoride and tetrafluoroethylene or trifluoroethylene. The film is bonded to electrode strips formed by printed circuit methods and then overcoated with a front electrode layer. The sandwich formed by the electrode layers and intermediate polymeric piezoelectric film can be reversed so that the front electrode layer is discontinuous while the back electrode layer is continuous, or both electrode layers can be formed to be discontinuous. Special configurations for the discontinuous pattern of electrode layers can be employed such as that specified by Fresnel's theory.
摘要翻译： 公开了一种压电振动传感器，其包括作为有源元件的聚合物压电膜。 该膜是选自聚偏二氟乙烯，聚偏二氟乙烯和PZT粉末，聚氟乙烯，聚丙烯腈，共轭或偏二氟乙烯如偏二氟乙烯和四氟乙烯或三氟乙烯的共混材料的选择性或完全极化的单轴取向材料。 将该膜粘合到通过印刷电路方法形成的电极条上，然后用前电极层涂覆。 由电极层和中间聚合物压电膜形成的夹层可以反转，使得前电极层不连续，而背电极层是连续的，或者两个电极层可以形成为不连续的。 可以采用电极层不连续图案的特殊配置，如菲涅耳理论规定的那样。
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公开(公告)号：US4296349A
公开(公告)日：1981-10-20
申请号：US120782
申请日：1980-02-12
CPC分类号： G10K11/28 , B06B1/0677 , Y10S310/80
摘要： Ultrasonic transducer advantageously usable for diagnostic purpose includes a piezoelectric element such as a PVDF film backed with a reflective layer of a reduced thickness specified in relation to the wavelength of sound waves within the reflective layer at one-half of the free resonant frequency of the piezoelectric element. Remarkable reduction in thickness assures high transfer efficiency, broad available frequency-band and easy application of fine treatments such as etching.
摘要翻译： 有利地用于诊断目的的超声波换能器包括压电元件，例如PVDF膜，其背面具有相对于反射层内的声波的波长规定的减小厚度的反射层，其厚度为压电自由共振频率的一半 元件。 厚度的显着降低确保了高转印效率，广泛的可用频带和易于应用精细处理如蚀刻。
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公开(公告)号：US4395652A
公开(公告)日：1983-07-26
申请号：US186258
申请日：1980-09-11
CPC分类号： G10K11/32 , Y10S310/80
摘要： An ultrasonic transducer element includes a polymer piezoelectric film having a plurality of sections. The sections are defined by wave planes of ultrasonic waves having substantially .lambda./2 phase difference emanated from an imaginary focal point or line located in front of the piezoelectric film. .lambda. is the wave length of the ultrasonic waves within an acoustic transmission medium located between the piezoelectric film and the imaginary focal point or line. The sections are arranged so that ultrasonic waves emanated from adjacent sections have substantially no phase difference at the imaginary focal point or line. Front and rear electrodes are deposited on opposite surfaces of the piezoelectric film.
摘要翻译： 超声波换能器元件包括具有多个部分的聚合物压电薄膜。 这些部分由具有从位于压电膜前方的假想焦点或线发出的基本上λ/ 2相位差的超声波的波面限定。 λ是位于压电膜和虚拟焦点或线之间的声传播介质内的超声波的波长。 这些部分布置成使得从相邻部分发出的超声波在假想焦点或线处基本上没有相位差。 前后电极沉积在压电膜的相对表面上。
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4.发明授权
公开(公告)号：US4578442A
公开(公告)日：1986-03-25
申请号：US510687
申请日：1983-07-05
申请人： Hiroji Ohigashi , Keiko Koga , Toshiharu Nakanishi
发明人： Hiroji Ohigashi , Keiko Koga , Toshiharu Nakanishi
IPC分类号： H01L41/193 , C04B35/00 , C08F214/22
CPC分类号： H01L41/193
摘要： A piezoelectric polymeric material having utility in ultrasonic transducers is disclosed which consists essentially of a copolymer of about 65 to 82 mol percent of vinylidene fluoride and about 35 to 18 mol percent of ethylene trifluoride. The polymeric material is formed into a film of the desired thickness and then heated to a temperature greater than about the crystal phase transition temperature and less than about the melting-point temperature to produce a heat-treated film. The heat-treated film is poled in an electrical field of from about 50 to about 1,500 kilovolts per centimeter to give the film a thickness extensional electromechanical coupling factor of at least 0.05 and preferably greater than 0.2.
摘要翻译： 公开了一种用于超声波换能器的压电聚合材料，其基本上由约65至82摩尔％的偏二氟乙烯和约35至18摩尔％的三氟乙烯的共聚物组成。 将聚合物材料形成为所需厚度的膜，然后加热至大于约晶体相转变温度并小于约熔点温度的温度以产生热处理膜。 热处理的膜在约50至约1500千伏/厘米的电场中极化，以使膜的厚度延伸机电耦合系数至少为0.05，优选大于0.2。
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公开(公告)号：US4577132A
公开(公告)日：1986-03-18
申请号：US662946
申请日：1984-10-19
申请人： Hiroji Ohigashi , Keiko Koga , Toshiharu Nakanishi
发明人： Hiroji Ohigashi , Keiko Koga , Toshiharu Nakanishi
CPC分类号： B06B1/0688 , Y10T29/42
摘要： An ultrasonic transducer is disclosed which includes a vibrating element comprising a sheet of a piezoelectric polymeric material which consists essentially of a copolymer of about 65 to 82 mol percent of vinylidene fluoride and about 35 to 18 mol percent of ethylene trifluoride. The polymeric material is formed into a film of the desired thickness and then heated to a temperature greater than about the crystal phase transition temperature and less than about the melting-point temperature for a period of time of about ten minutes to about two hours to produce a heat-treated film. The heat-treated film is poled in an electrical field of from about 50 to about 1,500 kilovolts per centimeter to give the film a thickness extensional electromechanical coupling factor of at least 0.05 and preferably greater than 0.2.
摘要翻译： 公开了一种超声波换能器，其包括振动元件，该振动元件包括压电聚合材料片，该片材基本上由约65至82摩尔％的偏二氟乙烯和约35至18摩尔百分数的三氟乙烯的共聚物组成。 将聚合物材料形成为所需厚度的膜，然后加热到大于约晶体相转变温度并且小于约熔点温度的温度约10分钟至约2小时的时间段以产生 热处理膜。 热处理的膜在约50至约1500千伏/厘米的电场中极化，以使膜的厚度延伸机电耦合系数至少为0.05，优选大于0.2。
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公开(公告)号：US5124232A
公开(公告)日：1992-06-23
申请号：US561637
申请日：1990-08-02
CPC分类号： G11B7/257 , G11B7/243 , G11B2007/2431 , G11B2007/24312 , G11B2007/24314 , G11B2007/24316 , G11B2007/2571 , G11B2007/25713 , G11B7/2534 , G11B7/2578 , Y10S430/146
摘要： An optical recording medium includes at least a substrate and a recording layer formed on the substrate, said recording layer being irradiated with an energy beam to change the optical properties thereof by directly or indirectly generated heat, thereby recording information, wherein said recording layer comprises four elements of tellurium (Te), germanium (Ge), gallium (Ga) and bismuth (Bi) and has a composition represented by the following formula:(Te.sub.x Ge.sub.1-x).sub.1-y (Ga.sub.z Bi.sub.1-z).sub.ywherein0.40.ltoreq.x.ltoreq.0.750.02.ltoreq.y.ltoreq.0.30 and0.05.ltoreq.z.ltoreq.0.50,x is the molar fraction of Te in Te-Ge, y is the molar fraction of the total amount of Bi and Ga in the recording layer, and z is the molar fraction of Ga in Ga-Bi. The optical recording medium of the present invention exhibits excellent CNR and recording sensitivity, no significant noise, a large amplitude of read-out signal, no significant jitter fluctuation excellent capability for high-speed and high-density recording, excellent life of media and resistance to moisture-and-heat, and high reliability.
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公开(公告)号：US4206167A
公开(公告)日：1980-06-03
申请号：US867195
申请日：1978-01-05
CPC分类号： B29C43/00 , Y10S264/911
摘要： A method for the manufacture of man-made fish-gathering plates having specific gravity between about 1.2 to 1.8 comprising the steps of providing a charge of raw material consisting of subdivided composite plastic consisting of at least two types of thermofusible plastic material or at least one type of thermofusible plastic material and non-plastic material, forming a molten mass from said charge of raw material by mixing by an agitator said charge with particulate inorganic material so the molten mass contains 25 to 70 weight percent of thermofusible plastic material as a bonding agent, said inorganic material being preheated to a temperature suitable for melting the thermofusible plastic material as a bonding agent and said agitator being kept at substantially the same temperature, charging the molten mass into a mold in a press machine to form it into a shape conforming to the shape of the mold, and after cooling solidifying the resulting shaped article, removing it from the mold.
摘要翻译： 一种用于制造比重在约1.2至1.8之间的人造鱼类收集板的方法，包括以下步骤：提供由至少两种类型的热熔塑性材料组成的细分复合塑料或至少一种 热塑性塑料材料和非塑性材料的类型，通过搅拌器将所述装料与颗粒状无机材料混合形成来自所述原料装料的熔融物料，使得熔融物料含有25-70％（重量）的热熔塑性材料作为粘合剂 所述无机材料被预热到适于熔化作为粘合剂的热熔塑性材料的温度，并且所述搅拌器保持在基本上相同的温度，将熔融物质装入压机中的模具中以形成符合 模具的形状，并且在冷却固化所得成形制品之后，将其从模具中取出。
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公开(公告)号：US5063097A
公开(公告)日：1991-11-05
申请号：US450782
申请日：1989-12-14
CPC分类号： G11B7/24 , G11B7/00557 , G11B7/243 , G11B7/258 , G11B7/26 , G11B2007/24306 , G11B2007/24308 , G11B2007/24312 , G11B2007/24314 , G11B2007/24316 , G11B7/2534 , G11B7/2542 , G11B7/2585 , G11B7/2595 , Y10S428/913
摘要： In an optical recording medium of the type on which information can be written, erased, and read by irradiating light to a recording layer formed on a substrate and in which writing and erasing of the information are effected by phase transition between an amorphous phase and a crystalline phase, this invention relates to an optical recording medium which includes at least a recording layer and protective layers and the composition of the recording layer comprises at least one kind of metals selected from the group consisting of palladium (Pd), nickel (Ni), silver (Ag), and gold (Au); antimony (Sb); germanium (Ge); and tellurium (Te), and is expressed by the formula given below. The present invention provides an optical recording medium which has a high erasing speed, is excellent in recording characteristics such as a carrier-to-noise ratio, an erase ratio, recording sensitivity, etc., is capable of a large number of writing and erasing cycles, is excellent in thermal stability, oxidation resistance and moisture-and-heat resistance, and has a long service life.(M.sub.x Sb.sub.y Te.sub.1-x-y).sub.1-z (Te.sub.0.5 Ge.sub.0.5).sub.z0.01.ltoreq.x.ltoreq.0.10.35.ltoreq.y.ltoreq.0.650.1.ltoreq.z.ltoreq.0.2where each of x, y, z and 0.5 represents the atomic fraction of each element and M represents at least one kind of metals selected from the group consisting of Pd, Ni, Ag and Au.
摘要翻译： 在通过将光照射到形成在基板上的记录层可以写入，擦除和读取信息的类型的光记录介质中，并且其中信息的写入和擦除通过非晶相和 晶体相，本发明涉及至少包括记录层和保护层的光学记录介质，并且记录层的组成包括选自钯（Pd），镍（Ni） ，银（Ag）和金（Au）; 锑（Sb）; 锗（Ge）; 和碲（Te），并由下面给出的公式表示。 本发明提供一种具有高擦除速度的光记录介质，具有优异的记录特性，如载波噪声比，擦除率，记录灵敏度等，能够进行大量写入和擦除 循环，热稳定性，抗氧化性和耐湿热性优异，使用寿命长。 （MxSbyTe1-xy）1-z（Te0.5Ge0.5）z 0.01
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