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    • 8. 发明申请
    • Photothermal conversion measuring instrument
    • 光热转换测量仪器
    • US20080123099A1
    • 2008-05-29
    • US11902279
    • 2007-09-20
    • Eiji TakahashiRyo KatayamaHiroyuki Takamatsu
    • Eiji TakahashiRyo KatayamaHiroyuki Takamatsu
    • G01B9/02G01N21/00
    • G01N21/171G01N21/031
    • There is provided a photothermal conversion measuring instrument which can measure change in property caused by thermal effect in a sample with high sensitivity and high accuracy by a simple structure. The instrument includes a current control circuit for sequentially switching output light of a plurality of excitation light sources each outputting excitation light having a different wavelength band so that one of the output light is irradiated to the sample, a light detector for interfering measurement light transmitted through the sample with reference light and detecting the intensity of the interference light, and a signal processor for extracting the same cycle components as the switching cycle of the output light switched by the current control circuit from a signal of the interference light intensity obtained from the light detector and for obtaining a difference of signal values corresponding to each of the excitation light based on the extracted signals.
    • 提供了一种光热转换测量仪器,可以通过简单的结构,以高灵敏度和高精度测量样品中热效应引起的性能变化。 该仪器包括电流控制电路,用于顺序地切换多个激发光源的输出光,每个激发光源输出具有不同波长带的激发光,使得输出光中的一个照射到样本,用于干扰测量光的光检测器, 具有参考光的样本并检测干涉光的强度;以及信号处理器,用于从由光获得的干涉光强度的信号中提取与由电流控制电路切换的输出光的切换周期相同的周期分量 并且用于基于所提取的信号获得与每个激发光对应的信号值的差异。