| 摘要 |
An infrared spectrometer assembly (100; 200) includes an entrance slit (101; 201) and a collimating optical element (102; 202) aligned with the entrance slit. A diffractive optical element (104; 204) is optically coupled to the collimating optical element. A focusing optical element (103; 203) is optically coupled to the diffractive optical element. A detector array (106; 206) is optically coupled to the focusing optical element. A linear variable filter, LVF, (108; 208) is optically coupled between the focusing optical element and the detector array. A method (300) for filtering a baseline signal emitted from spectrometer components in the infrared spectrometer assembly includes transmitting (304) radiation into a spectrometer and passing (306) the radiation through the LVF to filter the baseline signal being emitted from spectrometer components. The method includes receiving (308) the radiation in the detector array. |
