If the laser stops scanning, permanent damage to the eye will result because the beam stays focused in one spot.
Suddenly, the beam of the police searchlight focused on an object in the river.
I have placed these so the sound beams they put out will meet and focus on a weak point, a potential slide area.
She kept the beam focused on the second man, the one they'd never seen before.
He kept the beam focused on the closet and cast back rapidly through time.
He made a direct hit and kept the beam focused on the sensor.
He rolled away from the body and dropped the light, its beam still focused on Crofton.
The beam of my torch finally focused on a group of dolls all dressed in the same particular costume.
Then the beams focus on all the guide spots.
His beam focused on faint scratch marks in the stone.