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    • 63. 发明授权
    • Polyurethane spectacle frames or single parts thereof and process for
making
    • 聚氨酯眼镜架或其单个部件及其制造工艺
    • US4120848A
    • 1978-10-17
    • US750567
    • 1976-12-14
    • Yoichi MoriKanichi UedaMasao Takahashi
    • Yoichi MoriKanichi UedaMasao Takahashi
    • B29D12/02C08G18/00C08G18/72C08G18/73G02C5/00C08G18/76C08G18/42C08G18/48C08G18/77
    • C08G18/724B29D12/02G02C5/00
    • Disclosed are spectacle frames or single parts thereof having a moderate heat distortion temperature, i.e. approximately 60.degree. to approximately 70.degree. C. The spectacle frames or single parts thereof are composed of a cured polyurethane prepared by the reaction of (1) a mixture of two types of diisocyanates represented by the following formulae (A) and (B): ##STR1## where R.sub.1 is an aliphatic hydrocarbon group of 1 to 12 carbon atoms and R.sub.2 and R.sub.3 are hydrogen or an aliphatic hydrocarbon group of 1 to 12 carbon atoms, ##STR2## where X is oxygen or an aliphatic hydrocarbon group having 1 to 5 carbon atoms, with (2) a polyhydroxy compound having a hydroxyl value of at least 150 and an average molecular weight of 300 to 5,000. The ratio in amount of the diisocyanate of type (B) to the total of the two types of diisocyanates (A) and (B) is 0.2-0.7 by mole.
    • 公开了具有中等热变形温度即60度至约70℃的眼镜架或其单个部件。眼镜架或其单个部件由通过(1)两种混合物的混合物反应制备的固化聚氨酯 由下式(A)和(B)表示的二异氰酸酯类型:其中R 1是1至12个碳原子的脂族烃基,R 2和R 3是氢或脂族烃基1至12 碳原子,(B)其中X是氧或具有1至5个碳原子的脂族烃基,(2)羟基值至少为150,平均分子量为300至5,000的多羟基化合物。 类型(B)的二异氰酸酯与两种二异氰酸酯(A)和(B)的总量的比例为0.2-0.7摩尔。
    • 69. 发明申请
    • SAGNAC INTERFEROMETER-TYPE FIBER-OPTIC CURRENT SENSOR
    • SAGNAC干涉仪型光纤电流传感器
    • US20110141478A1
    • 2011-06-16
    • US12965147
    • 2010-12-10
    • Kinichi SASAKIMasao TakahashiYukihisa Hirata
    • Kinichi SASAKIMasao TakahashiYukihisa Hirata
    • G01B9/02
    • G01R15/246G01D5/35322G01R19/0092
    • In one embodiment, a Sagnac interferometer-type fiber-optic sensor includes a synchronous detection circuit to carry out synchronous detection of detected light signal with a phase modulation angular frequency of a phase modulator. A signal processing circuit calculates and outputs the magnitude of current to be measured using the signal detected in the synchronous detection circuit. A phase modulator driving circuit controls the driving of the phase modulator. The phase modulator driving circuit controls a phase modulation depth of the phase modulator so that the amplitude of the second-order harmonics and the fourth-order harmonics obtained by carrying out the synchronous detection of the detected light signal with the phase modulation angular frequency becomes the same.
    • 在一个实施例中,Sagnac干涉仪型光纤传感器包括同步检测电路,以相位调制器的相位调制角频率对检测到的光信号进行同步检测。 信号处理电路使用在同步检测电路中检测的信号来计算并输出要测量的电流的大小。 相位调制器驱动电路控制相位调制器的驱动。 相位调制器驱动电路控制相位调制器的相位调制深度,使得通过以相位调制角频率执行检测到的光信号的同步检测而获得的二次谐波和四次谐波的振幅变为 相同。