Handlobraesing
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Each one of them gives a lumen spec. Anyone know if their design specs are verified by a calibrated integrating sphere?
Fenix lights, are they tested for specs?
- Thread starter Handlobraesing
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I own the L0P, L1P and L2P.greg_in_canada
Flashlight Enthusiast
Most manufacturers (Surefire and HDS excepted) just quote "bulb" lumens. So they take the lumens rating of the bulb or Luxeon they are using and quote that. The reflector and lens loses are ignored. And for Luxeons the loss from the die not being 25 degrees C is also ignored.
Greg
Greg
LEDninja
Flashlight Enthusiast
Fenix L1P claimed 46 lumensgreg_in_canada said:
Measured at Flashlightreviews.com 26 lumens
Fenix L2P claimed 46 lumens
Measured at Flashlightreviews.com 27 lumens
Fenix L0P claimed 30 lumens
Measured at Flashlightreviews.com 20 lumens
Big difference between bulb lumens and out the front lens lumens.
Handlobraesing
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LEDninja said:
Flashlightreviews.com do not have an integrating sphere and they don't measure in lumens. They measure in a proprietary "relative units" which has no conversion factor with lumens.
Last edited:
Actually, the conversion factor is 1.43 +/- 17%.
http://www.flashlightreviews.com/features/output_vs_throw.htm
http://www.flashlightreviews.com/features/output_vs_throw.htm
