Looking at the intense beam causes a short-lived effect similar to staring at the sun forcing the target to turn away.

At night, an intense beam of light will be projected above the spire, being visible over 1000 ft into the air above the tower.

The projector emits an intense beam of light above into the sky at an angle that varies with the rotation.

They are also used in very high power laser systems, which use chains of optical amplifiers to produce an intense beam.

This will prevent degradation of the detector from the more intense beam energies.