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    • 51. 发明授权
    • Optical type range finder apparatus for motor vehicle
    • 机动车用光学式取景器装置
    • US5689328A
    • 1997-11-18
    • US618198
    • 1996-03-19
    • Koji Katayama
    • Koji Katayama
    • B60R21/00G01S7/48G01S7/481G01S13/93G01S17/08G01S17/93G02B7/32G01C3/08G02B7/00
    • G01S17/936G01S7/4813G01S7/4817G02B7/32G01S2007/4975
    • An optical type range finder apparatus for a motor vehicle. Dew condensation and deposition on an inner surface of an irradiation laser beam projecting window is prevented even in the environment where a front surface of the range finder is cooled down steeply, for ensuring a stable distance measuring performance. The apparatus projects outwardly an irradiation light beam (LE) from the motor vehicle and detects a distance between the motor vehicle and an object on the basis of known relation between the irradiation light beam (LE) and an echo light beam (LR) from the object existing in environment of the motor vehicle. An irradiation window (3a) includes a first light-transmissive panel (7) having a surface exposed to the exterior, a second light-transmissive panel (21) having a surface exposed to the interior of the range finder apparatus, and a heat insulation space (24) formed by an air layer confined between the first light-transmissive panel (7) and the second light-transmissive panel (21).
    • 一种用于机动车辆的光学式取景器装置。 即使在测距仪的前表面陡峭地冷却的环境中也能够防止在照射激光投射窗的内表面上的露水冷凝和沉积,以确保稳定的距离测量性能。 该装置向外突出来自机动车辆的照射光束(LE),并根据照射光束(LE)和回波光束(LR)之间的已知关系检测机动车辆和物体之间的距离 存在于汽车环境中的物体。 照射窗(3a)包括具有暴露于外部的表面的第一透光板(7),具有暴露于测距装置的内部的表面的第二透光板(21)和隔热层 由限定在第一透光性面板(7)与第二透光面板(21)之间的空气层形成的空间(24)。
    • 52. 发明授权
    • Blood flow measurement system
    • 血流量测系统
    • US5598841A
    • 1997-02-04
    • US306379
    • 1994-09-15
    • Ayafumi TanijiKoji KatayamaSatohiko Takanashi
    • Ayafumi TanijiKoji KatayamaSatohiko Takanashi
    • G01P5/00A61B5/026G01F1/66
    • A61B5/6876A61B5/0261A61B5/6884A61B5/7253A61B5/7257
    • A blood flow measurement system for measuring blood flow rate and blood flow velocity comprises a circuit device for irradiating an in vivo tissue measurement subject with coherent light, a light receiving element for receiving scattered light from the in vivo tissue, a converter for converting an intensity of the received scattered light into an electric signal, a circuit device for calculating a power spectrum of the time-course variation of the scattered light intensity, a device for plotting the power spectrum in a semilogarithmic coordinate system having a logarithmic vertical axis, and a device for linearly approximating a prescribed frequency component of the semilogarithmic power spectrum and calculating a slope and a y intercept of the power spectrum curve. The blood flow velocity can be determined from the slope of the curve approximating the power spectrum, while blood flow rate can be determined from the slope and y intercept of the curve approximating the power spectrum.
    • 用于测量血流速度和血流速度的血流测量系统包括用于用相干光照射体内组织测量对象的电路装置,用于接收来自体内组织的散射光的光接收元件,用于转换强度 的接收到的散射光成为电信号的电路装置,用于计算散射光强度的时间间隔变化的功率谱的电路装置,在具有对数纵轴的半对数坐标系中绘制功率谱的装置,以及 用于线性近似半对数功率谱的规定频率分量并计算功率谱曲线的斜率和ay截距的装置。 血流速度可以从接近功率谱的曲线的斜率确定,而血液流速可以根据接近功率谱的曲线的斜率和y截距来确定。
    • 54. 发明授权
    • Flow control valve unit
    • 流量控制阀单元
    • US5052656A
    • 1991-10-01
    • US519989
    • 1990-05-07
    • Koji Katayama
    • Koji Katayama
    • F16K31/04G05D7/06
    • F16K31/04
    • A valve unit for controlling a fluid flow through a fluid passage (2) comprising a valve assembly (27) having a substantially cylindrical valve holder (43) axially movably mounted to a motor shaft (34,35) and a valve member (44) securely attached to the valve holder (43), and a conversion mechanism, including spiral splines (35,49) disposed between the motor shaft (34,35) and the valve holder (43) and an axial guide (24,42) disposed between the motor (26) and the valve holder (43), for converting a rotation of the motor shaft (30) into an axial translational movement of the valve assembly (27). The valve holder (43) and the valve member (44) are made of a resin and fastened together by a bayonet joint (45) and welding (46).
    • 一种用于控制通过流体通道(2)的流体流动的阀单元,所述流体通道(2)包括阀组件(27),所述阀组件具有轴向可移动地安装到电动机轴(34,35)和阀构件(44)的大致圆柱形的阀保持器(43) 以及转换机构,包括设置在电动机轴(34,35)和阀保持器(43)之间的螺旋花键(35,49)和设置在所述电动机轴(34,35)和阀保持器(43)之间的轴向引导件 在电动机(26)和阀保持器(43)之间,用于将电动机轴(30)的旋转转换成阀组件(27)的轴向平移运动。 阀座(43)和阀构件(44)由树脂制成并通过卡口接头(45)和焊接(46)紧固在一起。
    • 58. 发明授权
    • Compound semiconductor device
    • 复合半导体器件
    • US08581296B2
    • 2013-11-12
    • US12835003
    • 2010-07-13
    • Masahiro AdachiShinji TokuyamaKoji Katayama
    • Masahiro AdachiShinji TokuyamaKoji Katayama
    • H01L33/00
    • H01L33/40H01L33/32H01L33/34
    • A compound semiconductor device having reduced contact resistance to an electrode is provided. The compound semiconductor device includes an n-substrate 3 comprising a hexagonal compound semiconductor GaN and having surfaces S1 and S2; an n-electrode 13 formed on the surface S1 of the n-substrate 3; a layered product having an n-cladding layer 5, an active layer 7, a p-cladding layer 9, and a contact layer 11 formed on the surface S2 of the n-substrate 3; and a p-electrode 15 formed on the p-cladding layer 9. The number of N atoms contained on the surface S1 of the n-substrate 3 is more than the number of Ga atoms contained on the surface S1. The electrode formed on the surface S1 is an n-electrode 13. The surface S1 has an oxygen concentration of not more than 5 atomic percent. The number of Ga atoms contained on the surface S3 of the contact layer 11 is more than the number of N atoms contained on the surface S3. The electrode formed on the surface S3 is a p-electrode 15. The surface S3 has an oxygen concentration of not more than 5 atomic percent.
    • 提供了具有降低的与电极的接触电阻的化合物半导体器件。 该化合物半导体器件包括包含六方晶系化合物半导体GaN并具有表面S1和S2的n衬底3; 形成在n基板3的表面S1上的n电极13; 具有形成在n基板3的表面S2上的n包层5,有源层7,p包覆层9和接触层11的层叠体, 以及形成在p包覆层9上的p电极15.包含在n基板3的表面S1上的N原子的数量大于表面S1上包含的Ga原子的数量。 形成在表面S1上的电极是n电极13.表面S1的氧浓度不大于5原子%。 接触层11的表面S3上所含的Ga原子数多于表面S3所含的N原子数。 形成在表面S3上的电极是p电极15.表面S3的氧浓度不大于5原子%。