From the course: Lighting with LED Panels

Unlock this course with a free trial

Join today to access over 22,400 courses taught by industry experts.

Key terms you need to know

Key terms you need to know

- When looking at lights and trying to describe how bright they are, there's a few terms that you should try to get your head wrapped around. You're probably familiar with the term watts. There's also lumens, and there's lux. Now, how does this apply to LED lights? Well, first of all, we're used to watts; you kind of know how bright a 60 watt bulb is or 100 watt bulb and a 500 watt junior or a baby light. You kind of know how bright it is based upon watts, but watts is really not the right measurement of luminous or luminosity, how bright a light is. Watt is just how much power is being consumed, so traditionally we knew that if it consumed so much power, a light is so bright. But lights are getting a lot more efficient, and so when you start getting to lights such as a HMI light or to fluorescent light or especially to LEDs, watts really doesn't represent how bright something is, and that's why we use the term lumens. Now lumens is based upon a term called foot-candles. And a…

Contents