Toward a Painless Cure

Seeing the light

Today, different methods are used to excite the metals and gases within UV lamp bulbs. There has been a drive to increase the energy output of UV bulbs, which introduces its own set of challenges, including UV energy focus and bulb cooling. "It used to be common to have a lamp with an output of 200 wpi," says Jeff Bade, sales manager at Primarc UV Technology. "Today, 400 wpi and 600 wpi systems are more common, with at least one dryer manufacturer designing systems to have an output of over 1,000 wpi," he says.