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Have a look at the video in this link , you may change your view on that
I’ve studied that video in the past over and over again alongside of another video and it’s suspect at best. I’m guessing those green lasers above the crowd are Argon at about 30~35mW but the light sources galvo scanning the crowd are white. The only way that’s going to be coherent light is if you multiplex coherent RGB sources. Why would you want to do that? If the white source is in fact non-coherent, the power level is meaningless and it would be understandable why it would be allowed to scan a crowd. If it is coherent, the liabilities are unfathomable and the operators would be very familiar with that!!! With regard to the sensor, pixels are addressed in rows and columns and each independently conducts across an intrinsic material regulated by light levels. When the light source is high, the pixel reads bright IE white. If a pixel has a catastrophic failure as implied here, it would be more attuned to an open fuse and the pixel would go dark. Also, the laser was able to perfectly align and take out an entire pixel row and leave them all conducting. Really? That’s pretty good shooting!!! And lastly, when a 30mW (That’s 30/1000 of a Watt!) 1mm coherent point source goes screaming across a large area in milliseconds, how long did it have time to stop by a 6 micron area and warm it up? Oh! And a wee bit of attenuation and beam spreading from the air particulates!!! All good questions and no DPA analysis!!! Should I change my view?