Super duration?

[MichaelW]

Okay, we have quantity & we have quality, but do we have run-time?
So, NOT from the same lamp, what kind of lights put out:
(or better)
1,000 lumens for 1 hour
100 lumens for 10 hours
10 lumens for 100 hours
1 lumen for 1,000 hours


Just a thought.

 

[KeyGrip]

Are you actually looking to buy lights with those specs, or is this just discussion? Reason I ask is that to meet those, the light is probably going to be large and/or expensive. If you really need 1000 lumens for 1 hour, HID might be a better route to go.

 

[Snow]

1000 lumens for 1 hour - I think my Vector POB HID can do this.
1 lumen for 1000 hours - My Safe-light can probably do close to this on locator mode.

 

[MichaelW]

No, just a discussion.

I imagine that with current technology the batteries would be pretty large.

I was thinking: 1 lumen should be enough if you were trapped in a cave
10 lumens would be fine for 'living in a tent'
100 lumens for running over/through unknown terrain
1000 lumens, say an airplane goes down in a field, and you need to render aid.

http://www.aerovisions.com/hid/hid_searchlights.html
not exactly pocketable (and not cheap, under $100)

 

[TigerhawkT3]

An ROP would be close to 1kL, but the runtime would vary based on what batt you went with. On 6D NiMH, for example, runtime would be in the neighborhood of 2-2.5h. And yes, the POB HID can do 3200L for over an hour, so that's definitely in. Perhaps a single P7 light could do it with some higher bins than currently available (C-bin, speced at 900L at the emitter), DD off an 18650 or three AA or C NiMHs.

For the others, you could just go with a single LED. I think something like a Fenix "digital"-series circuit running off a pair of D NiMHs would do it.

Heck, you could get all four levels using a multi-emitter or multi-die design with a couple D NiMHs and the appropriate converter.

 

[Burgess]

The Elektro Lumens Military Anglehead,

which is a 2-D cell flashlight, claims to produce 100 Lumens.


Also claims to run continuously for 24 hours, (on Alkalines)

before light output drops to 50 % of original output.


Costs 60 bucks.


Must admit, this sounds Very Interesting ! :thumbsup:


http://elektrolumens.com/AngleLux/AngleLux.html



These are "custom-made", so perhaps he could "tweak"

you a model with (let's say) one-fourth the light output,

but with 4 times the battery life.



That would indeed be a very handy flashlight.

:wow:




Edited to Add:

from his website:
Lasts 50,000 hours. That's 10 years of continuous use.

Errrr, actually, that's less than 6 years of continuous use.

:wave:

EndEdit
_

 

[Crenshaw]

a safelight on locator will run for approx 8760hours, asuming you dont use it for anything else.

another super long running light, the Niteize LED dropin for Maglites....

Tigerhawk...wonder if anyone, maybe leef? would make D bodies for fenix lights..that WOULD be interesting...

Crenshaw

 

[TigerhawkT3]

The Elektro Lumens Military Anglehead,

which is a 2-D cell flashlight, claims to produce 100 Lumens.


Also claims to run continuously for 24 hours, (on Alkalines)

before light output drops to 50 % of original output.


Costs 60 bucks.


Must admit, this sounds Very Interesting ! :thumbsup:


http://elektrolumens.com/AngleLux/AngleLux.html



These are "custom-made", so perhaps he could "tweak"

you a model with (let's say) one-fourth the light output,

but with 4 times the battery life.



That would indeed be a very handy flashlight.

:wow:




Edited to Add:

from his website:
Lasts 50,000 hours. That's 10 years of continuous use.

Errrr, actually, that's less than 6 years of continuous use.

:wave:

EndEdit
_

I'm curious as to how he's getting 100L from a Luxeon, and how long that would last in a plastic light.

 

[2xTrinity]

My Liteflux LF2x will produce 1/3rd lumen over a week consecutively on a AAA cell. That doesn't sound like much ,but in a true dark setting, it goes a surprisingly long way -- ie, it's enough to go night hiking with and light a whole trail to half-moonlight intensity.

 

[MorePower]

I'm curious as to how he's getting 100L from a Luxeon, and how long that would last in a plastic light.

He uses a Seoul P4 U-bin now instead of a Luxeon.

 

[MichaelW]

I was thinking that a Fenix P3D would need this
https://www.fenix-store.com/product_info.php?products_id=351
to get 100 lumens for 10 hours. (more or less)


and the Surefire UA2 says 2 lumen for 100 hours

 

[matrixshaman]

I believe the Eternalight on 3x AA Alkalines states 2800 hours on lowest setting. With Lithium AA's I'd expect even more. Most of the Eternalight I've got have never had a battery change and that's going on at least 7 or 8 years for some of them. I'll admit I don't use them as much any with all the new LED's but they are still a very hand and versatile light -- unfortunately you woun't see 1000 Lumens out of one nor even a 100 I'm sure.

 

[Jarl]

lol. Bit of a silly question- lots of batteries gives more runtime and output. So yes, you can quite easily get 100 lumens for 10 hours, you just need lots of batteries.

 

[MichaelW]

Thats okay, I wasn't looking for all these attributes coming from a single light.

Which model Eternalight?
http://www.flashlightsunlimited.com/elcomparisons.htm

http://flashlightsunlimited.com/documents/EternaLight/EliteMaxManual.PDF
{page 2} 1% of full power, is that 1 lumen yet?

 

[2xTrinity]

Thats okay, I wasn't looking for all these attributes coming from a single light.

The one I mentioned, the LF2, or any in that series, is infinitely variable from 100% to 0.2%. The lowest setting will run well over 500x longer than the highest. IMO, more light designers should include that range of variability (ie, the really low lows), especailyl with LEDs where they maintain their color temperature and efficeincy at low partial outputs.