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公开(公告)号:EP1373844A2
公开(公告)日:2004-01-02
申请号:EP02723450.9
申请日:2002-03-12
CPC分类号: G01J3/02 , G01J3/0256 , G01J3/26 , G01J3/28
摘要: An optical spectrometer uses a tapered Fabry-Perot type linear variable optical filter in conjunction with an optical detector array. The filter can be a long-pass, short-pass, or narrow bandpass filter. The stability of the variable optical filter allows high resolution, depending on the number and spacing of the detectors used. In a further embodiment, signal-processing techniques are used to enhance the resolution of the spectrometer beyond the measured response.