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公开(公告)号:EP0320530B1
公开(公告)日:1992-03-04
申请号:EP87118796.9
申请日:1987-12-18
申请人: Hewlett-Packard GmbH
IPC分类号: G01J3/28
CPC分类号: G01J3/06 , G01J3/02 , G01J3/021 , G01J3/1838 , G01J3/2803 , G01J2003/062 , G01J2003/064 , G01J2003/067 , G01N21/31 , G01N30/74
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公开(公告)号:EP0320530A1
公开(公告)日:1989-06-21
申请号:EP87118796.9
申请日:1987-12-18
申请人: Hewlett-Packard GmbH
IPC分类号: G01J3/28
CPC分类号: G01J3/06 , G01J3/02 , G01J3/021 , G01J3/1838 , G01J3/2803 , G01J2003/062 , G01J2003/064 , G01J2003/067 , G01N21/31 , G01N30/74
摘要: A photodiode array spectrometer for determining the spectral composition of a polychromatic beam of radiation comprises diffraction means (10) which generate from the polychromatic beam a diffracted beam with a plurality of spatially separated diffracted rays of different wavelengths (λ₁ ,λ₂ ,λ₃ ) . A photodiode array (11) receives the diffracted beam whereby each photodiode intercepts a different spectral portion of the beam. A rotatable transparent plate (8) is provided in the beam path in front of the diffraction means (10) which, due to refraction of the beam upon entering and leaving the plate (8), permits to vary the direction of the beam impinging on the diffraction means (10) and therefore the direction of the diffracted beam in small steps depending on the angle of rotation of the plate (8). By the stepwise displacement of the diffracted beam across the photodiode array (11) , a better sampling of the diffracted beam and therefore an improved spectral resolution is achieved. The invention can be used in the spectrometric analysis of a sample contained in a sample cell (5), whereby the sample cell is irradiated with polychromatic light from a light source (1).
摘要翻译: 用于确定多色辐射光束的光谱组成的光电二极管阵列光谱仪包括衍射装置(10),其从多色光束产生衍射光束,其具有多个不同波长(λ1,λ2,λ3)的空间分离的衍射光线 )。 光电二极管阵列(11)接收衍射光束,由此每个光电二极管截取光束的不同光谱部分。 可旋转的透明板(8)设置在衍射装置(10)前面的光束路径中,由于光束在进入和离开板(8)时由于折射而允许改变射入的光束的方向 衍射装置(10),并因此衍射光束的方向取决于板(8)的旋转角度而以小的步长。 通过衍射光束跨越光电二极管阵列(11)的逐步位移,实现了衍射光束的更好采样,从而实现了改进的光谱分辨率。 本发明可以用于样品池(5)中包含的样品的光谱分析,由此用来自光源(1)的多色光照射样品池。
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