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    • 25. 发明授权
    • Method and apparatus for optically analyzing specimen by using two light
beams
    • 用两光束光学分析试样的方法和装置
    • US4176957A
    • 1979-12-04
    • US760130
    • 1977-01-17
    • Yoshio MaedaKoichi MatsumotoKenji FukudaIsao Shindo
    • Yoshio MaedaKoichi MatsumotoKenji FukudaIsao Shindo
    • G01J3/02G01J3/42
    • G01J3/42
    • Method for optically analyzing a specimen by using two light beams comprises steps of initiating automatically wavelength scanning operation when a predetermined time has elapsed after the switching-on of a power source, sampling a ratio between a reference light intensity and a specimen light intensity during the wavelength scanning operation when no specimen to be measured is placed in the sample cell, and storing signals derived from the sampling operation in a volatile memory. When the specimen is to be measured or analyzed, the measure signal representative of ratio between the reference light intensity and the specimen transmitting light intensity which are produced or the wavelength scanning operation proceeds is corrected by the corresponding signal read out from the volatile memory in accordance with the wavelength of the measure signal, and the corrected signals are processed as the error-free measure signal.
    • 通过使用两个光束对样本进行光学分析的方法包括以下步骤:在电源接通之后经过预定时间时自动启动波长扫描操作,在该期间对参考光强度和标本光强之间的比率进行采样 波长扫描操作,当不测量样本被放置在采样单元中,并将从取样操作得到的信号存储在易失性存储器中。 当要测量或分析样本时,表示参考光强度和所产生的样品透射光强度之间的比率的测量信号或波长扫描操作的进行是通过根据从易失性存储器读出的对应信号来校正的 与测量信号的波长,并且校正的信号被作为无差错测量信号被处理。
    • 26. 发明授权
    • Monochromator combining a plurality of light dispersing elements
    • 组合多个光分散元件的单色器
    • US4102576A
    • 1978-07-25
    • US734636
    • 1976-10-21
    • Yoshio MaedaKoichi MatsumotoKenji Fukuda
    • Yoshio MaedaKoichi MatsumotoKenji Fukuda
    • G01J3/04G01J3/12G01J3/18
    • G01J3/12
    • The present monochromator comprises a plurality of monochromator portions including one prism and at least one diffraction grating, the prism being arranged in the first or final portion. In order to cover a deviation of light having a required wavelength at an exit slit, resulting from the variation of refractive index of the prism due to the variation of temperature and from the rotational error of the prism and in order to increase the amount of exit light, the width of an entrance or exit slit adjacent to the prism is held always greater by a constant value a than an intermediate slit adjacent to the prism. The value a is selected to be equal to either a.sub.T or a.sub.r shown by the following expression or greater than it,a.sub.T = D.sub.p..DELTA..lambda..sub.Ta.sub.r = D.sub.p..DELTA..lambda..sub.rwhere D.sub.p is a line dispersion of the monochromator portion due to the prism, .DELTA..lambda..sub.T is a deviation of wavelength resulting from the variation of refractive index of the prism due to the variation of temperature, and .DELTA..lambda..sub.r is a deviation of wavelength resulting from the rotational error of the prism.
    • 本单色仪包括多个单色器部分,包括一个棱镜和至少一个衍射光栅,该棱镜布置在第一或最后部分。 为了覆盖由于温度的变化和棱镜的旋转误差引起的棱镜的折射率的变化而导致的在出射狭缝处具有所需波长的光的偏差,并且为了增加出射量 光,与棱镜相邻的入口或出口狭缝的宽度总是比与棱镜相邻的中间狭缝保持恒定的值a。 值a被选择为等于以下表达式所示的aT或ar或大于其的AT = Dp。 DELTA lambda T ar = Dp。 DELTAλr WHERE Dp是由于棱镜而导致的单色器部分的线色散,DELTAλT是由于温度变化而由棱镜的折射率变化引起的波长的偏差,并且DELTAλr是偏差 的波长由棱镜的旋转误差产生。