At that glass inspection stage, rejects are identified, then shunted aside and reprocessed efficiently, greatly reducing scrap. SWIR cameras can detect the imaging quality of laser spot in the industry，like detects the centroid energy of the spot. whether the laser spot meets the gaussian distribution and other purposes allowing operators to inspect both the interior and exterior walls of the bottle, as well as monitor the temperature uniformity and cooling rate of the material.
Objects may be the same color in the visible, but outside the visible wavelength band, their reflective properties can be very different. This enables short wave ir camera to detect the contaminants and allow systems to remove them from the processing line.