500 watt halogen output?

[FredM]

Wondering how many 100 watt incan bulbs are equal to a 500 watt floor lamp. The 100 watt incans claim around 1700 lumens.

[StainlessSteel]

i THINK 500 watts of halogen is around 10,000 lumens

[mattheww50]

It is going to depend upon both lamp life and technology.
Generally the shorter the life, the higher the lumens per watt, and some high power Icans (the GE's with HIR) use a special IR reflective coating on the inside to further increase Lumens/watt (by reflecting IR energy back onto the filament instead of radiating it), but your typical 100 watt lamp runs anywhere from about 9 lumens per watt for a long life lamp to perhaps 15 for some halogen lamps with relatively short lives (a few hundred hours or less).

A 500 watt halogen should be good for about 20 lumens per watt, some may be good for a little more, depending upon life expectancy.

[Super Tico]

bump with video

http://www.wimp.com/homemadeflashlight/