CPC G01N 21/255 (2013.01) [G01J 3/108 (2013.01); G01J 3/1256 (2013.01); G01N 21/35 (2013.01)] | 19 Claims |
1. A multiband IR adjunct (MIRA) sensor to spectroscopically determine the content and the concentration of chemical composition of a targeted object, comprising:
a sensor housing;
a first optical channel carried by the housing;
a first front optics in the first optical channel receiving a photon signal;
a second front optics in the first optical channel receiving the photon signal from the first front optics;
an acousto-optic tunable filter (AOTF), carried by the housing, receiving light beams from the second front optics;
a photo detector (PD) carried by the housing;
a set of back optics in the first optical channel that receives polarized narrow-band light beams from the AOTF and focuses the polarized narrow-band light beams onto the PD, the PD converting the polarized narrow-band light beams into an electrical signal;
a data acquisition unit signal-connected to the PD, the data acquisition unit collecting the electrical signal.
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