MadTeacup
Well-Known Member
I'm not sure if the lasers are powerful enough to burn skin considering they don't scorch the paint on the castle. However, you are correct that there is a certain focus height tolerance that exists. It's typically more to ensure that the lasers never point to a human eye. In the VoLM theater there are actually lines painted on the walls where the lasers must not go past. Every morning before park opening, a trained technician must come to test the lasers. If just one of the lasers points below the lines, the whole laser system is shut off until the laser responsible can be refocused. Also, if the daily laser test cannot take place, the lasers will not be used. I imagine there are similar procedures for all other shows featuring lasers. As you mention, one of the current issues with live entertainment is the lack of trained staff.It appears to be a (trained) staffing issue. Starting up, adjusting, and monitoring these laser systems are not trivial tasks. Remember that these lasers are reasonably high powered and can burn a person's skin if aimed incorrectly - that's why they are tested and tuned every time they are powered up for a show.
The only FAA requirement is that they get a call each night before the show(s) - the flight advisory (?) is only filed once per year and is current.
Lastly, I asked an Imagineer about use the laser(s) by more than one show and her reply was that it's just a show controller on the other end of an Ethernet link, and can be used by any show at any time, without any special interface or change of control script.