Think, fireplace or candlelight quality (red and orange hues). We covered the efficacy of LEDs and a newly-innovated incandescent light bulb in our post, 'MIT’s ‘recycling light’ innovation may save the incandescent light bulb.' Common LED lighting terms for visual appeal and colorĬolor temperature, officially referred to as Correlated Color Temperature, is a numerical value that indicates the color of light a particular fixture or bulb will emit.Ī low number indicates warm light. In labs, they are already reporting numbers like 300lu/watt, so it's only a matter of time for the next wave of LED efficiency! Who doesn't want more for less? Currently, you shouldn't settle for less than 70lu/watt, and some LED's are over 100lu/watt. Just a few years ago, most LED's were around 30-50lu/watt. Manufacturers are making huge improvements to both engineering and manufacturing processes, and efficacy ratings are constantly improving. Efficacy (lumens per watt)Įfficacy is a ratio of how many lumens are produced (how much light) per watt of energy consumed.Įfficiency! The higher the efficacy ratio, the more efficiently your product is performing. The right light source may actually have lower lumens than comparable products, but if the manufacturer has done a good job of concentrating the light to the center of the beam, then your sequin jumpsuit will sparkle and shine like nothing else. This would imply that the light is spread out over a large area, which wouldn't work well for trying to draw attention to a painting on the wall, or a mannequin wearing a sequin jumpsuit. It is possible to have a high LUMEN output, but a low CBCP. It often isn't enough to only use the lumen output when determining if a lamp will be bright enough. This is an important measurement for spot and accent lighting. Center Beam Candle Power (CBCP)Ĭenter beam candle power measures the intensity of light at the center of a beam of light. Comparing the lumens of an LED bulb to the lumens of a traditional one will help determine if an LED bulb will be bright enough to directly replace your traditional lamp. Lumens are important in comparing an LED bulb to a traditional source.
Lumens are the measurement of how much light the bulb puts out. Common LED lighting terms for light output or brightness Remember, this means that it should be at 70 percent brightness at 50,000 hours. There are LED bulbs that can replace a 4,000-hour halogen lamp and last up to 50,000 hours.
An LED’s rated life is therefore when the lamp is expected to be 30 percent dimmer than it was when brand new.Īnother key advantage LED’s have over traditional lighting is how long they last. LED’s, however, don’t typically burn out. This is set by listing the number of hours it takes for 50 percent of a sample of identical products to burn out. With traditional light sources, the rated life is the length of time the product is expected to operate before burning out.
The rated life of an LED is how long it is intended to operate before reaching 70 percent of its original brightness. For example, you may see an LED A-Lamp that only uses 8 watts, but its replacement wattage is a 40W incandescent bulb. Replacement wattage will help you find an LED bulb that will be bright enough to replace the one that you are currently using. Replacement wattage indicates the wattage of the traditional lamp that is being replaced by the LED bulb or fixture.
While there are other benefits to LED lighting over traditional lighting, their reduced wattage consumption is still their biggest advantage. The wattage of an LED lamp is usually going to be its most marketed feature. Wattage is simply the measure of how much energy a lamp needs to light up. Common LED lighting terms for efficiency and reliability Let me help you sort through a few of the most common specs, and offer you an easy way out!Ĭheck out Regency's online Lighting Glossary for a more extensive list of lighting terms. There are a number of different terms and performance metrics that can make a simple thing feel hard. When you’re ready to make the leap to LED lighting, it can be a little scary.
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