Laser Crowd Scanning is and amazing visual effect at most live entertainment shows, especially concerts. But, there is a bunch of safety factors that go into play before the lasers can or may be used. Some of these safety factors include, knowing where the free space is amongst the venue, understanding the angle of the beams and knowing that the safe zones aren’t amongst the areas where a person in the crowd could be in line with the beams.
Before even wasting the time and effort to setup the lasers at the venue, the people of the building should provide a layout of the venue so the crew can adjust to where they shall be able to point the beams. The crew must also make sure that they may be able to use the lasers in the venue and be aware if they can even use the laser at all where they may be travelling.
The angles of the beams are a key role in safety. When positioning the lasers the crew needs to know where the lasers are going to be placed. They should also know where the act onstage may be moving to. If the lasers are placed at a lower height, the crew should be aware of the tallest person onstage to adjust the beam angles when the laser is at such a height.
After knowing the specifications on the venue, where the laser will be positioned, knowing the safe zones where the beam will be directed to and knowing the act that’s potentially the closest to the laser. The setup may begin after all the fine details are worked out.
When setting up a laser after all the safety requirements is met the main tools that are used from a control worker to do safe crowd scanning. Knowing where the beam hits the stage at its placement, a mirror would be taped down to the stage so the beam has something to redirect off of and not harm anyone down in front of the stage. But, after the beam reflects off the mirror, it needs a new safe zone to be redirected to so nobody gets harmed. After safe zones are marked while the venue is empty, an operator should go through the entire laser display and check for any flaws to be safe that the safe zones are exactly safe so nobody in the crowd can get hurt.
When you watch a live concert and you see the lasers pointing downwards and then reflecting out into the crowd, those beams are reflecting off the mirrors placed on the stage floor. Those mirrors are often taped down with a bright reflective colour of tape, or even just white tape. The tape acts as more than just a fastener for the mirrors. It also acts as a caution signal that the mirror is there for laser to reflect. A really good example of the mirrors taped to the stage for the lasers can be viewed from “Snakes And Arrows, Rush” as the movie as multiple angles of viewing the mirrors.
Another great reference for the lasers in live events in to watch any live event with “The Who”. The use of lasers by “The Who” was the first big step in the Rock N’ Roll Worlds. If...