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    • 5. 发明申请
    • GAS COMPONENT DETECTION DEVICE
    • 气体组分检测装置
    • US20140070101A1
    • 2014-03-13
    • US14110999
    • 2012-04-05
    • Shunsuke MatsushimaEiichi Furukubo
    • Shunsuke MatsushimaEiichi Furukubo
    • G01N21/17
    • G01N21/17G01N21/3504
    • An optical path of infrared rays (see the broken lines in FIG. 1) is modified to a substantially U-like shape by a first reflecting mirror and a second reflecting mirror. An incidence angle of the infrared rays incident on the wavelength filter (an angle between the infrared rays incident on the surface of the wavelength filter and the line perpendicular to the surface of the wavelength filter) is nearly zero. For this reason, as compared with a conventional example, the influence of the incidence angle dependence of the wavelength filter can be reduced. As a result, the amount of the infrared rays reaching the light receiving unit through the wavelength filter is increased, thereby suppressing a decline in the detection accuracy of the gas component.
    • 通过第一反射镜和第二反射镜将红外线的光路(见图1中的虚线)修改为大致U字状。 入射到波长滤波器上的红外线的入射角(入射到波长滤波器的表面上的红外线与垂直于波长滤波器的表面的线之间的角度)的入射角几乎为零。 因此,与传统的例子相比,可以降低波长滤波器的入射角依赖性的影响。 结果,通过波长滤波器到达光接收单元的红外线的量增加,从而抑制气体成分的检测精度的下降。
    • 7. 发明授权
    • Gas component detection device
    • 气体成分检测装置
    • US09134224B2
    • 2015-09-15
    • US14110999
    • 2012-04-05
    • Shunsuke MatsushimaEiichi Furukubo
    • Shunsuke MatsushimaEiichi Furukubo
    • G01N21/17G01N21/3504
    • G01N21/17G01N21/3504
    • An optical path of infrared rays (see the broken lines in FIG. 1) is modified to a substantially U-like shape by a first reflecting mirror and a second reflecting mirror. An incidence angle of the infrared rays incident on the wavelength filter (an angle between the infrared rays incident on the surface of the wavelength filter and the line perpendicular to the surface of the wavelength filter) is nearly zero. For this reason, as compared with a conventional example, the influence of the incidence angle dependence of the wavelength filter can be reduced. As a result, the amount of the infrared rays reaching the light receiving unit through the wavelength filter is increased, thereby suppressing a decline in the detection accuracy of the gas component.
    • 通过第一反射镜和第二反射镜将红外线的光路(见图1中的虚线)修改为大致U字状。 入射到波长滤波器上的红外线的入射角(入射到波长滤波器的表面上的红外线与垂直于波长滤波器的表面的线之间的角度)的入射角几乎为零。 因此,与传统的例子相比,可以降低波长滤波器的入射角依赖性的影响。 结果,通过波长滤波器到达光接收单元的红外线的量增加,从而抑制气体成分的检测精度的下降。