How it works
A show laser draws with a single point of light. Two tiny mirrors, called galvos, move that point thousands of times a second, so the eye sees lines, shapes and moving beams instead of a dot. Lasershow software turns a timeline of effects into those mirror movements and colour changes, locked to the music.
There are two main looks. Beam shows aim the light into the air above the audience, where haze makes the beams visible as sheets, tunnels and fans. Graphic shows project lines, logos and animation onto a surface such as a building, a screen or a mist of water. Most shows mix both.
Good to know
- Haze is what makes beams visible. Without it, a beam show looks like a few dots on the far wall.
- Projector power is chosen for the distance and the ambient light. A ballroom and a stadium need very different kit.
- Most show lasers are Class 4, so beam paths, operator training and emergency stops are planned before the show, not on the night.
- Outdoor shows near airports or flight paths usually need approvals from the local aviation authority.
