Hey all, I own a fenix l2d q5 flashlight and it is excellent thus far, but one department it lacks in is throw because of it's small reflector. Could one of these be modded with an aspheric ball like can be done with a minimag? Would the throw increase dramatically? Cheers.
What about modding a fenix with an aspheric lens for super throw?
- Thread starter joey_1987
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djblank87
Enlightened
:welcome:
I do not think you could fit an aspheric lens into such a small package like the L2D, I'm not saying it could not be done but doing so would take some good modding skills.
Why not go with a bigger light like an Aspheric Mag for a decent size light with super throw or go for the Dereelight, Tiablo, MRV for throwers?
seeing as I've got one of these comming in the post now I'd like to know too
I think something like the way the red lens filter fits on would be cool
https://www.fenix-store.com/product_info.php?cPath=27_38&products_id=338
I think something like the way the red lens filter fits on would be cool
https://www.fenix-store.com/product_info.php?cPath=27_38&products_id=338
Bunk3r
Newly Enlightened
A TIR optic is what you are after for such a small package. there is a cheap small one available from DX etc but Ive not compared the measurements to a fenix.
I might be completely wrong here, but I think the shape of the lens is what concentrates the light. Even if the lens was small, if it was the right shape it should work. The only problem would be getting an aspheric that would fit a Fenix. I would love to see one; maybe a 300+ yard P2D?:naughty:
Federal LG
Flashlight Enthusiast
:welcome:
Thanks for the replies so far and thanks for the welcome too 
. Does anyone have a link for a potentially suitable TIR optic or any other sort of lens that could be used for an l2d to focus the beam into a tight spot? Cheers.
. Does anyone have a link for a potentially suitable TIR optic or any other sort of lens that could be used for an l2d to focus the beam into a tight spot? Cheers.Bunk3r
Newly Enlightened
Thanks for the replies so far and thanks for the welcome too
http://www.dealextreme.com/details.dx/sku.4584 -optic, i suspect its slightly too large.
http://www.dealextreme.com/details.dx/sku.1920 -TIR optic (much more efficient, less wasted light) but too big for the fenix.
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moon lander
Enlightened
Welcome to CPF!
use http://theledguy.chainreactionweb.com/product_info.php?cPath=48_50_65&products_id=136
i used this 1/2 acrylic ball on my modded rexlight, and it focuses perfectly and at least quadruples the throw. i think it is spheric, not aspheric, as it is a half of a ball, but the focus is great.
i just attached it to a 1/2" length of pvc pipe that fits over the head of the rexlight. basically the same idea as the fenix diffuser but replace the diffuser with the optic. the focus is adjustable between a die projection and a slightly defocused die projection, but no flood, and it can be removed and replaced easily. i carry it in my pocket incase i need throw, i just slip it on the rexlight head... problem is its scratch-able, so it'd be best to recess it into the pvc pipe if possible.
the focal length is perfect for the rexlight, so if your reflector is deeper (distance from the led to the end of the light is greater) then it may not focus the same. if i had to guess, id say it would work for almost all AA sized lights.
the reason a mag aspheric would be better, is that in the rexlight, the sides of the direct beam from the die are truncated by the reflector. only the direct light gets focused into a spot, anything that hit the reflector first will appear as a wide ring around the spot. the mag has a head wide enough to fit most of the Crees actual projection angle without cutting off the sides of the beam before it hits the optic. hope that helps.
use http://theledguy.chainreactionweb.com/product_info.php?cPath=48_50_65&products_id=136
i used this 1/2 acrylic ball on my modded rexlight, and it focuses perfectly and at least quadruples the throw. i think it is spheric, not aspheric, as it is a half of a ball, but the focus is great.
i just attached it to a 1/2" length of pvc pipe that fits over the head of the rexlight. basically the same idea as the fenix diffuser but replace the diffuser with the optic. the focus is adjustable between a die projection and a slightly defocused die projection, but no flood, and it can be removed and replaced easily. i carry it in my pocket incase i need throw, i just slip it on the rexlight head... problem is its scratch-able, so it'd be best to recess it into the pvc pipe if possible.
the focal length is perfect for the rexlight, so if your reflector is deeper (distance from the led to the end of the light is greater) then it may not focus the same. if i had to guess, id say it would work for almost all AA sized lights.
the reason a mag aspheric would be better, is that in the rexlight, the sides of the direct beam from the die are truncated by the reflector. only the direct light gets focused into a spot, anything that hit the reflector first will appear as a wide ring around the spot. the mag has a head wide enough to fit most of the Crees actual projection angle without cutting off the sides of the beam before it hits the optic. hope that helps.
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easilyled
Flashaholic
I think that its both shape and size.
A 52mm Aspheric lens will throw the light much further than a 27mm one,
all other factors being the same.
Sgt. LED
Flashaholic
It has been done with an asphere from surplus shed. Results provided a good throw, but the glass sticks out too much for an EDC. Also a light rigged for throw is not good for much else. If you want a tiny throw only light then have at it, if you measure the Fl mm properly you will have success.
WadeF
Flashlight Enthusiast
I had a small aspheric in my P3D that had been modded with a Q5 by fenix-store. It did improve through, but because the lens is so small it won't compare to a aspheric mag. Seems the larger aspheric lenses put out a tighter beam. Here is my topic:
https://www.candlepowerforums.com/threads/173459&highlight=ashperic+p3d
Still, for a little light like the P3D, the throw was pretty amazing.
https://www.candlepowerforums.com/threads/173459&highlight=ashperic+p3d
Still, for a little light like the P3D, the throw was pretty amazing.
easilyled
Flashaholic
Thanks, my knowledge on this subject is almost non-existent, that is why I said "I think". Thanks for correcting that. You learn something new everyday on here.
No problem. I also said "I think", but I'm fairly confident that's the case
Its the holy grail to find something that one can attach to a keychain
and throws for miles.
The only solution is a laser, as far as I know.
Gunner12
Flashaholic
How's this:
Buy an aspheric lens, attach it to a cone of correct width and height(To ensure the correct focus and fitting) and attach it to the front of you light. That will let you to have both throw and flood.
:welcome:
Buy an aspheric lens, attach it to a cone of correct width and height(To ensure the correct focus and fitting) and attach it to the front of you light. That will let you to have both throw and flood.
:welcome:
Once again thanks for the replies, keep them coming. I have had a look at surplusshed and found this: http://www.surplusshed.com/pages/item/pl1099.html
I measured the diameter of the l2d lens and it is about 19mm, from edge of reflector-edge of reflector it is about 17mm, would this lens suit? Would It improve the throw if I simply attached it as an add on to the outside of the AR glass lens that is there? Cheers.
I measured the diameter of the l2d lens and it is about 19mm, from edge of reflector-edge of reflector it is about 17mm, would this lens suit? Would It improve the throw if I simply attached it as an add on to the outside of the AR glass lens that is there? Cheers.
yeah that's what I would like to do too, that's why I wonder if it's possible to modify the red filter to take the aspherical lens, it would make it so much easier to take on and off when you needWould It improve the throw if I simply attached it as an add on to the outside of the AR glass lens that is there? Cheers.
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