This means you can theoretically pump up your "green values" to cheaply boost lumen levels (easier to do than boosting red due to phosphor issues). One case is how lumens are actually measured against the spectrum that the eye if capable of seeing. Frankly, all the tests and standards for lighting aren't optimized and don't measure LED performance well. I think this kind of speaks to the differences in light from the different bulb types. Very green, especially when compared to other lights. Full disclosure, I work for another fixture manufacturer but we have looked at using their LEDs before and they just don't have good coloration in my opinion. I would personally recommend against cree, but mostly cause I think their LEDs are terrible. So in conclusion, even though the two fixtures produce the same amount of lumens, and LED can harness, and direct much more of the light that is actually produced, essentially making the space you are pointing at brighter. LEDs are closer to a direction spot light, with a much wider field of view. These hotspots exist without a gradient because the light at that fixture is essentially peeling away into the night sky (ever wonder what one of the reasons we get that "orange glow" over cities is?).ĮLI5: Traditional bulbs are like a handheld lantern, with light escaping in every which direction. That's why when you see an orange parking lot, the light beneath the pole is very focused - aka "hotspots". Bulbs tend to waste a lot of light that escapes at the edge of the fixture and scatters. Lumens from an LED have a higher efficiency in terms of where their light is directed, as opposed to a traditional bulb. Similar to HPS floodlights, Metal Halide floodlights take 10-15 minutes to start up while LEDs reach maximum brightness in less than a second.īy modernizing floodlight systems with high-efficiency industrial LED floodlights, companies could see energy savings of up to 90% over conventional systems.TBH, there's the 300 page way of explaining it, and the really really watered down way of explaining it. Moreover, Metal Halides will last for around 15,000 hours and blown bulbs are very common during the lifespan of this type of lamp. A 100W V-TAC LED floodlight can offer 120 Lm/W while Metal Halide floodlights require 200W for the same output. LED floodlights are twice as efficient as Metal Halides variants. HPS also requires frequent monitoring and regular maintenance for top performance while LED floodlights require little or no maintenance. However, LEDs last longer: 30,000 hours vs 24,000 hours.Īn important factor is that HPS floodlights can be slow to switch on, often taking as long as ten minutes while LEDs light up in a fraction of a second. A good HPS floodlight can offer the same Lm/W as an LED floodlight. High Pressure Sodium floodlights are the closest rivals to LED floodlights – in terms of efficiency. They also last up to 30,000 hours – requiring little maintenance – while a halogen floodlight may last 15,000 hours if maintained regularly.Īnother point in favour of LED floodlights is that they dissipate light less than halogen floodlights, making them brighter and better at concentrating light in a single direction. LED floodlights, on the other hand, produce 80% less heat. Estimates suggest that swapping an existing halogen floodlight with an LED counterpart could cut energy consumption by up to 65%.Īdditionally, 80% of the energy consumed by a halogen floodlight is dissipated as heat. So why is V-TAC convinced that LED floodlights are the future? However, with the Lumens per Watt measurement, all you need to know is that a floodlight with a higher Lm/W value requires lesser energy to produce bright light, making it more energy efficient. A higher wattage no longer means brighter light, making the unit ‘Watt’ a redundant measurement of brightness.
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