LED lights are also called LED Fixtures.
LED (Light Emitting Diode) Lights are gradually replacing incandescent lights in all areas of lighting production. As the technology improves and becomes more affordable, they are expected to totally replace incandescent lights. They have the advantage of being running at a lower temperature, using a substantially smaller amount of electricity and each light is able to produce different colours, reducing the need have having multiple lights focussed on the same area to provide different coloured lighting. Their greatest limitation is the intensity of the beam and the distance the light can throw. But every year improvements are being made and their beam intensity and throw range increases.
One of the big advantages of LED lighting that colours can be calibrated to suit film and television quite easily. Colour temperatures can be selected to best suit the needs of the recording
LED Lights are controllable by DMC (Digital Multiplexing). The intensity and the colour of the light can be controlled at the console. Each light or fixture is given an address in binary and that address allows it to be individually controlled by the console. If multiple LED lights are given the same address, they will all be controlled by the same channels on the console.
LED lights come in three main types
Flood Lights – often a single colour, but some are available with colour mixing capabilities. Often used outdoors as security lighting or coloured ones are used as cyclorama lights for stage work.
PAR Lights – these are used to produce a wash of light on stage. Usually RGB, but sometimes RGBW or RGBAW (red, green, blue, amber, white). The beam is not commonly adjustable, but you can get zoom versions. Sometimes silk filters are used to spread and soften the light.
Profile - these are a newer development and are the lights that will eventually replace standard incandescent theatre lanterns. They have the same functionality of a traditional incandescent zoom profile with the added bonus of being programable and have full colour mixing. Plus, they need a lot less electricity to power them.