For example, a 15-watt LED bulb shall output 1,100 lumens. LED lights produce more lumens than incandescent bulbs per watt. However, with newer lighting technologies such as CFL (compact fluorescent lamp) and LED (light-emitting diode) entering the fray and consuming much less energy than the power-hungry incandescent lamps, watt figures are no longer the only reliable indicators of a bulb’s brightness. While one of the parameters, watts, do not necessarily communicate the brightness levels of a lighting tool.īack in the day when only incandescent lights were around, the wattage of a bulb gave a clear idea of how bright the light could potentially get. The “wattage” of a bulb denotes the total power a bulb consumes. Lumen is, therefore, not the best measure to ascertain or explain how much light a particular lamp will cast on a specific area.īut because it indicates the amount of light a given light source produces, lamps and other lighting tools usually have their light output labeled in lumens. If light travels in dots from a particular light source, lux will be the total number of light dots falling on an area, and lumens shall be the number of dots released.Ī light source’s lux figure is usually mentioned in correlation with the distance the light can travel-for instance, 2000 lux at 5 feet. Do not confuse lumens with “lux”-the latter measuring the total light falling on a surface.
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