XLR-250 Red Lumen Rating????

Lumen Ratings for XLR 250 Kill Light:

White LED = 360 lumens
Red LED = 270 Lumens
Blue LED = 210 Lumens
Green LED = 260 Lumens

This is the maximum lumens, so if you have the new 3-mode, this is the lumen output on the highest setting.
 
Originally Posted By: iLOVEthehuntLumen Ratings for XLR 250 Kill Light:

White LED = 360 lumens
Red LED = 270 Lumens
Blue LED = 210 Lumens
Green LED = 260 Lumens

This is the maximum lumens, so if you have the new 3-mode, this is the lumen output on the highest setting.

Where did you find those ratings?
 
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I bought on a the TTHA convention, its unreal. Now I have all these freekin lights. Thank god Im not married. I bought the 250 green
 
Sorry, but the last time I revealed my source I got in trouble on the forums.
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But those lumen ratings are accurate on the Kill Light as they are from the supplier that EWT uses.
 
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http://www.cree.com/products/xlamp_xpe.asp
Looking at the latest, improved Cree XP-E high-efficiency led spec sheets (released June 2011), and driving the led between 1200 to 1400 mAmps, I calculate the following emitter lumens (keep in mind that "out-the-front lens" lumens is a little less due to efficiency).
White - 385 lumens
Red - 200 lumens
Blue - 135 lumens
Green - 330 lumens
I wonder when Elusive Technologies and Sniper Hog Lights will incorporate this latest led (especially the green) into their lights.
 
Yes, but remember that higher lumen output deals with intensity of light (usually measured at 1 meter), not necessarily how far downrange that light travels. The determining factor in how far a light "throws" the beam is the level of surface brightness of the LED. Therefore more lumens doesn't always equal being able to ID your target at a greater distance. So don't shop on lumens alone. Unfortunately, most manufacturers don't measure surface brightness for you, so you have to use a math equation to calculate it yourself. The link below helps to explain this principle and the formula to calculate surface brightness.

http://www.candlepowerforums.com/vb/show...g-aspheric-lens
 
Lumens is a measurement of the total amount of light out of the flashlight, no matter if the beam is large diameter (wide) or concentrated, or has lots of spill around the main beam.
The throw of the light depends on the size of the emitter (smaller is better), the surface brightness of the emitter, and the size/design of the reflector (large and smooth is better). Flashlights are usually measured for throw, by measuring the LUX falling on the center of an object placed 1 meter away [note that it may be a pencil beam or a large beam; for lux measurement, that doesn't matter].
A good HS-802 and white XLR250 generate about 30,000 lux at one meter.
The Solarforce Masterpiece PRO-1 (with large head & XR-E R2 led) generates about 48,000 lux at one meter. This light is one of the best throwers (without an aspheric lens system). But the light head is big and heavy.
The Predator lamp is 12,000 lux at one meter.
Many of the XR-E Q5 budget thrower lights generate about 20,000 lux at one meter.
A lux number of 3 is about the same illumination you see on an object at civil twilight. Full moonlight has a lux value of about 0.3.
For my throw comparison purposes, I liked to calculate the throw distances for an illumination of 1 lux (something I can see clearly in a good scope). It also makes the calculations easier.
Lux varies as the square root of the distance.
Therefore, the HS-802 puts 1 lux of illumination on an object at 173 meters (190 yards) [square root of 30,000].
The Masterpiece PRO-1 puts 1 lux at 219 meters (240 yards).
The Predator light puts 1 lux at 110 meters (120 yards).
The budget Q5 thrower lights put 1 lux at 140 meters (153 yards).
Hope this helps.
 
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