| 摘要 |
A multi-band imaging spectrometer and method of remote hydrocarbon gas detection using the spectrometer. One example of the multi-band imaging spectrometer includes a front objective optical system, and an optical spectrometer sub-system including a diffraction grating, the optical spectrometer sub-system configured to receive and collimate an input beam from the objective optical system to provide a collimated beam at the diffraction grating, the diffraction grating configured to disperse the collimated beam into at least two spectral bands. The spectrometer also includes a single entrance slit positioned between the objective optical system and the optical spectrometer sub-system and configured to direct the input beam from the objective optical system to the optical spectrometer sub-system, and a single focal plane array optically coupled to the diffraction grating and configured to produce an image from the at least two spectral bands. |
