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    • 9. 发明申请
    • Light intensity detector
    • 光强度检测器
    • US20060289729A1
    • 2006-12-28
    • US11230518
    • 2005-09-21
    • Masaki IwamotoJun Ojima
    • Masaki IwamotoJun Ojima
    • H01J40/14
    • G01J1/04G01J1/0407G01J1/0429G01J1/047G01J1/0477G01J1/4257G02B27/283G02F1/2255
    • A polarization separating element such as a beam splitter receives a first light of a first polarization plane. The polarization separating element derives out of the first light a second light of a second polarization plane set perpendicular to the first polarization plane. A photoelectric element converts the second light into an electric signal. The intensity of the second light is in this manner detected. Since the second light is derived out of the first light, the phase of the second light is allowed to synchronize with the phase of the first light. The extinction ratio of the second light accurately reflects the extinction ratio of the first light. The detection of the intensity of the second light at the photoelectric element enables an accurate detection of the intensity of the first light.
    • 诸如分束器的偏振分离元件接收第一偏振面的第一光。 偏振分离元件从第一光源中导出垂直于第一偏振面设置的第二偏振面的第二光。 光电元件将第二光转换成电信号。 以这种方式检测第二光的强度。 由于第二光被从第一光中导出,所以允许第二光的相位与第一光的相位同步。 第二光的消光比准确地反映第一光的消光比。 在光电元件处的第二光的强度的检测能够精确地检测第一光的强度。