The color rendering index shows how true colors are displayed under a light source. Look at the bulb’s Color Rendering Index (CRI). Lighting experts currently recommend only buying Energy STAR-qualified LED light bulbs, as they must pass numerous quality tests to earn that designation. As manufacturers rush to fill the market with LED bulbs in the wake of changing laws, watch out for cheap fixes-if it seems too good to be true, it likely is. Newer bulbs have a Lighting Facts label that will give you all the details of a particular bulb:Įspecially in LEDs, the manufacturing quality of the bulb varies, with lesser bulbs not lasting as long as their better-built counterparts. For example, while we’ve previously looked to watts to learn a bulb’s brightness, that information is now presented in lumens. How do I read the light bulb label?Ĭhanges in lighting regulations and technologies mean that there are new lighting terms to learn. Additionally, you can use the color temperature chart to help you in choosing the best lighting for your application. For instance, a 60 watt bulb is equivalent to 800 lumens of light, a 40 watt bulb is equivalent to 450 lumens and so forth. This should provide you with a good understanding of how bright 120 lumens is vs. Use the chart above to determine exactly how many lumens are in a watt and vice versa. See how to measure lumens below: How many lumens do you need? Converting Watts to Lumens: With new, energy-efficient LED technology, we can no longer rely upon wattage to indicate how bright a bulb is. Not that watts are bad, but they measure energy use, not light output. The definition of lumen is: “a unit of luminous flux in the International System of Units, that is equal to the amount of light given out through a solid angle by a source of one candela intensity radiating equally in all directions.” Needs, or to understand more about how you can choose the correct LED bulbs, please contact us here at Superior Lighting.What is a lumen? How is it different from a watt? You would use these types of bulbs inĪreas where high levels of illumination are required, such as security lights. Read or perform tasks that require high levels of vision.Īnything over 1,500 lumens could be considered ‘too bright’. You would still be able to see where you are going, but you may find it hard to Anything under 400 lumens would be considered ‘low light’. Watt incandescent bulb gives off 800 lumens, while a 75 watt incandescent gives See! Understanding Lumens, and What Power of Bulb You Needįor most applications,LED bulbs with lumen ratings of between 800 and 1,100 lumens are fine. LED would give off 3,600 lumens – you would need to wear sunglasses just to Incandescent bulb for a 60 watt LED bulb, when you switch the light on yourĮyes would not be able to cope with the amount of light generated. Power than their incandescent counterparts. Swap in terms of wattage, but you could not be more wrong. You may think that swapping an incandescent bulb for an LED one involves a simple like-for-like Incandescent Watts Versus LED Watts – An Important Difference All objects that give off light can have the amount of light theyĬreate measured in lumens. Lumens were originally created as a standard scientific The definition of a single lumen is highly complicated and is not really something to get overlyĬoncerned about. Perfect sense to use lumens, rather than watts. Main purpose of light is to aid vision by providing illumination, it makes To visible wavelengths rather than the pure ‘strength’ of the light. Lumens measure light in terms of the human’s eye sensitivity That any source gives off, be it an incandescent bulb, an LED bulb or a natural They’ve been around for years and are used to measure the amount of light The First Step in Choosing the Right LED Bulb – Understanding Lumens Is far more satisfactory to gauge the amount of light given by an LED bulb by You can still gauge the amount of light by ascertaining the bulb’s power rating, but doing so does not give you the whole picture. With LED bulbs matters are a little different. A 60 watt bulb generally gives off around two-thirds of theĪmount of light of a 90 watt bulb, for example. Issue as the amount of light obtained from such bulbs is in direct relation to With traditional incandescent light bulbs this has not been an Over time, people have become accustomed to measuring the amount of light emitted by a bulb in terms of power input.
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