Pursuer (headlight)
The follower (English followspot ) is a special form of a profile spotlight that is used to z. B. on a stage , in film and television or shows (car shows etc.) to put the actor in the limelight.
The chaser sends out a strong, pinpoint beam of light that only highlights the desired section and leaves the rest in the dark. The name is derived from the fact that the headlight follows the actor in his movements. This can be done by a sensor that automatically controls the headlight. However, these devices are unreliable and inaccurate, and development in this area has largely ceased. As a rule, it is operated by a person ("pursuer driver") who stands or sits at the pursuer. The device is usually set up at a distance of 5 to 200 meters from the specified lighting area, at the level of the stage or above. The light cone optimally points directly at the front of the actor, so that no undesired light cones are offset by the actor.
The tracker often has color filter systems (e.g. Boomerang ) that are mounted on the device. The color filters can be pushed into the beam path manually or remotely .
Chasers are available in different versions, whereby the power varies widely: There are smaller chasers with an output of 650 watts and more, but also headlights with over 4000 watts ( xenon lamps ). The best-known major pursuer is the legendary Super Trouper , which was used for long distances of up to 300 m as early as the 1970s. An internationally successful song (by the Swedish pop group ABBA ) was even named after him.
Also moving heads or scanner can be used with a transmitter or manual control by a mixer as a persecutor, usually they are but too faint or have a so that the illuminated area no sharp edge facing large dispersion.