How does stage lighting color work?
August 14, 2010 1:08 PM Subscribe
How does color-changing work in modern stage lighting?
posted by smackfu to Technology (9 answers total)
When I was in high school, our shiny new auditorium had pretty fancy computer controlled lights. The color-changing part was just a series of gels on a roll that were rotated in front of the beam, to get various distinct colors. This meant you generally could only switch the colors while the light was off (otherwise you would see the intermediate colors), and it wasn't very fast. Neat, but trade-offs.
Last week, I went to a rock concert and clearly technology has moved on. In addition to the steerable lights, they had banks of lights that could change color instantly. (You can see them in this photo
, the red and blue sets of four.) Generally they just used them to light the entire stage but one part of the show had them continuously cycling through colors.
So, how do they do that? And can anyone identify that light fixture?