How is this 50 watt equivalent at 280 lumen? 50 watt halogens put out about 500 lumen.
1007912
LEDs create a specific spectrum of energy - and the good news is that it is only in the visible light spectrum. Of the 50watts being used by the halogen, a lot of the energy is in non-visible spectrum - specifically heat (IR) energy. Almost all of the LED energy goes to visible spectrum (e.g. light).
1007913
Even though the lumen output is supposedly half a halogen's rated output, I have found the bulbs (I've got seven of them) to be close. I just replaced one halogen today. However, I've been swapping out medium base (screw-in) medium spot bulbs for these GU10 (twist) base bulbs. Because I didn't convert from GU10 halogen reflector bulbs, the light quality may be more noticable different. I hope this helps.
1435231
The one I received is not as bright as a 500 watt halogen fixture, although it is still very bright. The manufacturer claims 4500 lumens.
1821995
Their claims seem a bit off, it's more like 1200 to 1500 lumens. Elsewhere datasheets show 67 lumens per watt Epistar LEDs and current measurements show 23W INPUT, so you do the math subtracting for inefficiencies since output must be lower than input power. It's still a good lumen:price ratio but the actual lumen range is helpful to know for comparative purposes.
385730
I cannot give you an answer. Going to the "contact us" on the manufacture's website is your best option.www.dlightdesigns.com I have seen the unit at the high setting. It appears to be equivalent to 50 watt or higher bulb. Hope this helps.
1454633
I have put these bulbs along side 40 watt incandescent, and I'd say the light output was comparable...perhaps just a tad less. 50 watt seems to be common in vanity fixtures, so you would certainly say that the output was not enough if replacing all. As I said earlier, the color is more of an issue (to me) than the output. Noticeably 'cooler' than incandescent, and not warm enough (IMO) to be called 'warm white.'
927028
As one who is getting older also I find that 750 lumens, the only real measure is adequate for general work but not detail. I use them to reduce energy cost and A/C but still miss my 85 watt incandescants.
1947481
1100 lumens. Compare that to what you have now. It replaced my 75 watt bulb just fine. You could always get a dimmer switch to if it's too bright.
1881232
The Luminous Intensity for this kind of light is around 90-100Lm/W. Then you can calculate the output lumens as the wattage you need.
378715
A 100 watt incandescent bulb puts out about 1600 lumens. This light is rated at 1400 lumens. It appears brighter in my opinion due to the way the LEDs are spread out. Appears to light a larger area more uniformly.
2170206
I was wondering the same thing. They don't seem to know what they are talking about. Wikipedia says there are around 16 lumens per 1 incandescent watt. A 100 watt incandescent bulb puts out about 1,600 lumens by the Wikipedia conversion, to give people perspective. I just got a 2,000 lumen Snap-On LED Worklight, which by the Wiki conversion is equivalent to 125 watt incandescent bulb (or 30 watt compact flourescent).
198902
I just looked up Lumens. Based on my calculations, these 25 11W bulbs will generate a total of 3,647 lumens. This is how I calculated it: 40W Bulb replaced with an LED = 450 lumens; 60W bulb replaced with LED = 800 lumens; 75W bulb replaced with LED = 1100 lumens. Divided all by their respective wattage for an average of 13.08 lumens per watt X 11 Watts per bulb = 145.88 X 25 bulbs = 3,647 total Lumens. I'm not a mathematician or a scientist. What I will tell you is they make my walkway look enchanted. On the box it says: 11S14 130V 11W E27 Nickel Base Bulbs. Hope this helps.
153529
I am not what the equivalent lumes are for these light but they are about as bright as a 30 watt light bulb
1753678
It's depen on the halogen bulb's light output. Some old halogen bulb has 1100 Lumen and some new halogen bulb has 1600 ~ 1900 Lumen output. This bulb has 2000 Lumen output with much less power consumption and longer life. Thanks
1828891
I have four of these installed on a ceiling fan. I feel each give out light equivalent of ~20W incandescent light bulb or slightly less though it is advertised as 700 LM...
710254
Per the box, 300 lumen. I replaced 12 35-watt halogens with 12 of these, and have more light at one-seventh the wattage. A terrific product.
1237514
The spots are 20 watts, the floods are 50 watts. I replaced the halogens with LED's. The spots with 3watt, the floods with 5 watts and they work just great. Just about same amount of light as halogens.
1329099
The Cree bulbs at Home Depot are *outstanding* and they throw around 450 lumens. They have 60w A19 equivalents too that throw a lot more than that.