Bringing LEDs Into Focus
Posted on Tuesday, July 31st, 2012
by Michael S. Eddy
No doubt, LEDs are all the rage. With lower prices, higher power and improving quality, it’s tempting to consider them viable for every application. Yet trouble-shooting, maintenance and debate over color temperature can complicate matters. Our panel of experts weigh in with advice.
As the use of Light Emitting Diodes (LED) has grown for theatrical lighting applications, most of the fixtures offered have been PAR and floods with red, green, and blue (RGB) LEDs ganged up for washes of color. Today there are some good white-light LED options available as well, and in the past two years manufacturers have been tackling the goal of producing a profile fixture with an LED light engine. While some refer to profile fixtures as ellipsoidals, they technically aren’t since they don’t use an elliptical reflector. They use shutters and a lens system for beam control so they are referred to as a profile. There is now a range of profiles with LED light engines from a selection of manufacturers that offer beam control with shutters and the ability to add gobos for pattern projection. Manufacturers also are producing Fresnels powered by LEDs that have spot-to-flood control-and the barndoors can actually shape the beam.
Read the full review at: http://www.churchproduction.com/go.php/article/bringing_leds_into_focus