narrowing the beam of 3,5 or more led flashlight.

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Aistis
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narrowing the beam of 3,5 or more led flashlight.

Hello, how to narrow beam of flashlight with several leds? for exmaple TR-j12. will it work with one convex lens ? or it need 5 individual lenses ? 

wiljen
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it wont work with a single aspheric as that produces a pattern that looks a bit like a biohazard symbol on the wall when used with a 3 emitter flashlight.  I tried it with the dry and a 60mm Aspheric for kicks.   Might be good for the zombie hunting crowd.  (Kind of a biohazard batman symbol).

Aistis
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If i throw away a reflector and replace original glass with this ? http://www.dealextreme.com/p/59mm-20mm-15-120-degree-99-transmittance-glass-optic-13569

 

is there any other project with lenses and leds in internet ? i can't find any.

2100
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There is, you'd need 3 seperate aspherics. Search for Viffer750's work.

http://budgetlightforum.com/node/4131

dthrckt
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or 5, for the OPs question

Aistis
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what diameter and shape lens need for tr-j12?? 

Chicago X
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The Ledil boomerang works well in multi-LED apps:

http://www.cutter.com.au/proddetail.php?prod=cut820

 

These look promising as well; I'm planning on ordering some with the next Cutter order:

http://www.cutter.com.au/proddetail.php?prod=cut850&cat=76

http://wardogsmakingithome.org/index.html

War Dogs, Making it Home - Rescue Dogs for Returning Vets

Aistis
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