Active thermography inspection of protective glass contamination on laser scanning heads.

@article{Skla2016ActiveTI,
  title={Active thermography inspection of protective glass contamination on laser scanning heads.},
  author={Jir{\'i} Sk{\'a}la and Michal {\vS}vantner and Jeremy Tesar and A. Franc},
  journal={Applied optics},
  year={2016},
  volume={55 34},
  pages={D60-D66}
}
Industrial lasers are an expanding technology of welding and other materials processing. Lasers with optical scanning heads are often used, as these provide more versatility, accuracy, and speed. The output part of the scanning head is covered by a protective glass, which might get contaminated by various particles from the laser processing. This decreases the transmissivity of the glass, and it can affect the production quality. The contamination needs to be checked regularly, but a visual… CONTINUE READING