Can you really get 80 lumens from a 1w LED?
http://www.bhphotovideo.com/c/produ...DUAL_Dual_M2_LED_Tactical.html#specifications
http://www.bhphotovideo.com/c/produ...DUAL_Dual_M2_LED_Tactical.html#specifications
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Is this even possible?
- Thread starter NWdude83
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80 emitter lumens, yes. I think it would be tough to do 80 emitter lumens out the front of the light, though. Some LED's are over 100 lumens per watt, so you'd have to get your reflector and lens losses to 20% or less, or use an optic, which typically lose 15%.
I remember Terralux made a 1 watt, 90 lumen light a few years ago. I gave one away. It was supposed to have 5 hours of runtime on 2 AA's. It was pretty heavily constructed light, too.
I remember Terralux made a 1 watt, 90 lumen light a few years ago. I gave one away. It was supposed to have 5 hours of runtime on 2 AA's. It was pretty heavily constructed light, too.
Morelite
Flashlight Enthusiast
It is possible if the LED is overdriven and well heatsinked. Normal Luxeon I white LEDs produced 40 to 50 lumens when driven to spec.
LEDninja
Flashlight Enthusiast
Nowadays most 1 watt LEDs are run at 350 mA though that is technically closer to 1.25 watt.
Depends on who and when the LED is made. At 350mA:
Lumileds Luxeon produce 30-42 lumens.
Lumileds Rebel 60/80/100 produce 60/80/100 lumens.
Cree XRE P4 bin produce 80 lumens.
Cree XRE Q5 bin produce 107 lumens.
Cree XRE R2 bin produce 114 lumens.
Cree XPG R5 bin produce 135 lumens.
About 65% of the light gets out a stock Maglite, about 80% get out of a Fenix or other high end light.
I do not know the efficiency of dive lights, but 80 lumens is possible.
People who use Cree usually have CREE as part of the spec. With no CREE, I suspect this torch is using the Rebel 80 (hence the 80 lumen claim). 80 LED lumens, 50-65 lumens out the front.
Depends on who and when the LED is made. At 350mA:
Lumileds Luxeon produce 30-42 lumens.
Lumileds Rebel 60/80/100 produce 60/80/100 lumens.
Cree XRE P4 bin produce 80 lumens.
Cree XRE Q5 bin produce 107 lumens.
Cree XRE R2 bin produce 114 lumens.
Cree XPG R5 bin produce 135 lumens.
About 65% of the light gets out a stock Maglite, about 80% get out of a Fenix or other high end light.
I do not know the efficiency of dive lights, but 80 lumens is possible.
People who use Cree usually have CREE as part of the spec. With no CREE, I suspect this torch is using the Rebel 80 (hence the 80 lumen claim). 80 LED lumens, 50-65 lumens out the front.
