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The single element version of this puts out a listed 630 lumens, less than a 120V 60W incandescent bulb which puts out about 850 watts. I don't know where they got the 693 feet from and at that distance whatever light is output it wouldn't be usable, IMHO. The twin version is about the same as a 120V 75W bulb, about 1200 lumens. A typical H4 halogen automotive lamp (the correct name for a bulb) puts out about 1000 lumens as a low beam and 1600 lumens as a high beam. I think the LEDs will light up the road in front of you a bit, and will definitely make your scooter easier to see, but they are far from being long distance spot lights.

That's my two cents and I'll take my change, now.
 

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Discussion Starter #3
If me understan, optical are improve concentrate light very much which permit more distance.
 

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It's a very narrow beam (has to be to be able to be seen at that distance) that would be unsuitable for usage alone as a 'high beam' or 'driving light. Fog lamp, maybe. but the narrow range of what it covers would leave a LOT that is in front of you IN THE DARK.
 

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Discussion Starter #5
Available in 10° or 20° pattern, 20° pattern wider light up side of roads/field but beam go about 500 feet compare 693 feet, which still better than high beam.

Do not want beam too wide for light up forest for attract 4 leg animal to have accident.
 

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Lumens are the standard measure of light output. Do the math. The numbers don't lie.

As to beam spread LEDs have directional output and this light seems to only have one LED which faces forward. I think that the reflector system is just for show; it probably doesn't do anything.

Most of the marketing on this web site seems to be so much hype. I'd take it all with a couple of shakers of salt. I'm thinking that if you buy these you will be greatly disappointed.
 

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The 2012 average Lumen per watt of Cree LED's is about 200, so if these were just AVERAGE Cree LED's at 10 Watts then it would be 2000 lum's. Not sure where the 630 rate is from. But the 1 lux at 693 feet would be about 7.875 times the equivalent of a 55 watt low beam at 1 lux at 88 feet. Cherie, this is a question TAG or Daboo may answer as they have played with 10 watt Led driving lights. I have a buddy that has a setup with 3 Cree 3 watt chips per housing that are focased in different patterns, 1 on for low and all 3 on for high and the total of 9 watts per housing, X-2 housings makes it look like daylight at night. The one LED shines down and to the right and the other two are more up and forward but still to the sides a bit, like 10 degrees spread.

http://en.wikipedia.org/wiki/Lux
 

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The Leds are very Much Improving now!! Colors such as Red, Amber, Green, Blue, now you can get those at 600lm-900lm
have not found one at 1000lm yet? but soon.

i was able to locate mr16's with the Power of 1000lm

if we wait just a little longer we can get the new Plasma Leds, which are suppose to have less current and less heat then Standard Leds.

Elliott,
 

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