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Thread: Engineers Help
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03-11-2011, 04:48 PM #1
Engineers Help
Anyone know the calculation for watts to lumens. looking at different underwater LED's some quote in lumens some in wattts??? for example
110 halogen watts = X led lumensA Day at the Lake...Priceless
A Day in Powder...Endless
Joe V
2012 Möbius XLV~ Loaded & Exiled
2007 Outback V ~ sold
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03-11-2011, 04:53 PM #2
One site said this:
In this context, Watts are a measure of electrical power and lumens a measure of light output. So, depending on the efficiency of your light source the equivalency will vary dramatically. For example, a 60 watt conventional light bulb typically gives off 800 lumens. A frosted 60 watt bulb may only give off 500 lumens. A 13 watt CFL will give off that same 800 lumens, which is why 13 watt CFLs are often (erroneously) called 60 watt bulbs.
Here's one with a formula though:
http://www.ehow.com/how_7305200_conv...ts-lumens.htmlMy Mom said I'm not allowed to get wet!
2008 LSV (sold)
2000 Outback LS (sold)
LLTR!!!!!!!!
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03-12-2011, 05:26 PM #3
Yup, what kaneboats said. There is no conversion factor for Watts to lumens. Watts is a measure of power, Joules per second, or Newton meters per second, while lumens is a measure of light power as perceived by the human eye. Wavelengths of light affect perception.......ok I'll stop you get the point. I would base your choices off lumens, which is the important factor. Who gives a rip how many watts, if the light is dim.
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03-13-2011, 08:51 AM #4
Reason I ask . iCal Ed lumitec on the sea blaze 3 underwater led and they would not quote lumens just as bright 110 watt halogen?.....
A Day at the Lake...Priceless
A Day in Powder...Endless
Joe V
2012 Möbius XLV~ Loaded & Exiled
2007 Outback V ~ sold
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03-13-2011, 01:29 PM #5
For what it's worth -
I did the whole research thing last year and read the comparison test on WW and couldn't find any better bang for the buck than "newty's" group buy ($1 per Lumens).
There was a decent deal on Bakesonline for some Atwood's but they had the Malibu logo engraved in them and I'd have to buy the boat to match if I would have gone that route
2007 Moomba Outback - going, going, GONE
2015 "NOT A MOOMBA"
Why Not? Play Hard! Get wet
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03-13-2011, 04:12 PM #6
I Am looking at vision as well I think it 249 for 720 lumens,group buy was better priced but no green at the time. So about .30 cents per lumen. I saw the malibu as well.
A Day at the Lake...Priceless
A Day in Powder...Endless
Joe V
2012 Möbius XLV~ Loaded & Exiled
2007 Outback V ~ sold