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    • 93. 发明授权
    • Planar light source device and liquid-crystal display device
    • 平面光源装置和液晶显示装置
    • US07004612B2
    • 2006-02-28
    • US11003732
    • 2004-12-06
    • Tomotsugu TakahashiTakahiko UedaHiroshi Koyama
    • Tomotsugu TakahashiTakahiko UedaHiroshi Koyama
    • F21V7/04
    • G02B6/0055G02B6/0065
    • Provided is a planar light source device, which comprises a light guide having at least one side end serving as a light incident side and having one surface serving as a light-emitting side, a light source disposed in the vicinity of the side end of the light guide, and a light reflector disposed on the other side opposite to the light-emitting side, and which is characterized in that the light guide is essentially formed of a polyolefin resin, the light reflector is also essentially formed of a polyolefin resin, and when a piece of the light reflector having a face size of 1.5 cm×1.5 cm is prepared, and it is pressed against the surface of the light guide with its reflective face being in contact with the surface of the light guide under a load of 135 g/cm2 thereto, and, in that condition, when it is reciprocated 10 times on the surface of the light guide to a width of 5 cm every time at a speed of 2.5 cm/sec, then the surface of the light guide is not substantially scratched by it. The planar light source device is characterized in that the light guide therein is hardly scratched and the device is lightweight.
    • 提供一种平面光源装置,其包括具有至少一个侧端用作光入射侧并具有一个表面用作发光侧的光导,设置在该光源的侧端附近的光源 导光体和配置在与发光侧相反的另一侧的光反射体,其特征在于,所述导光体基本上由聚烯烃树脂形成,所述光反射体也基本上由聚烯烃树脂形成,并且 当准备具有1.5cm×1.5cm面积的光反射体的一部分时,其反射面在135°的负载下与导光体的表面接触而被压靠在导光体的表面上 g / cm 2,并且在该条件下,每当以2.5cm / sec的速度每次在导光体的表面上往复运动10次至5cm的宽度时,则 导光体的表面基本上不划伤 由它编辑。 平面光源装置的特征在于,其中的导光体几乎不被划伤,并且该装置重量轻。
    • 100. 发明授权
    • System for detecting speed of engine for vehicle
    • 车辆发动机速度检测系统
    • US4984455A
    • 1991-01-15
    • US503844
    • 1990-04-03
    • Hiroshi KoyamaMasami KondoHiroshi Kawahara
    • Hiroshi KoyamaMasami KondoHiroshi Kawahara
    • F02D29/00F02D41/22F02D41/34F02D45/00G01P21/02
    • F02D41/0097F02D41/222G01P21/02
    • A system for detecting the speed of an engine for a vehicle calculates the engine speed in accordance with a signal which is outputted from a main rotation sensor in accordance with the operation of the engine. In case the main rotation sensor is subjected to malfunction, the engine speed is calculated using a back-up signal. Namely, an auxiliary rotation sensor detects the rotation of a portion of a power transmission device. When the above portion of the power transmission device is connected to an output shaft of the engine, the signal from the auxiliary rotation sensor is used as the back-up signal. When the two are disconnected from each other, a signal, representing the condition of the operation of an actuator for controlling the amount of supply of fuel to the engine, is used as the back-up signal.
    • 用于检测车辆的发动机的速度的系统根据从主旋转传感器输出的根据发动机的操作的信号来计算发动机转速。 在主旋转传感器发生故障的情况下,使用备用信号计算发动机转速。 即,辅助旋转传感器检测动力传递装置的一部分的旋转。 当动力传递装置的上述部分连接到发动机的输出轴时,来自辅助旋转传感器的信号用作备用信号。 当两者彼此断开时,表示用于控制向发动机供给燃料量的致动器的操作状态的信号作为备用信号。