flashlight led lens and reflector

[nkgamer1990]

so im looking to make a flashlight with really great throw but have no clue what i need to accomplish this.
im gonna be using a cree xp-g led Cree Engineering Support | Arrow Electronics - North American Components (NAC)
can anyone help me calculate what would be desired in a reflector and lens to do this?
do i even need a lens if i have a good reflector?
-nick

 

[Morgan]

Hi nkgamer1990,

There are probably more appropriate forums than this to find help with that project. Is it CPF, (Candle Power Forums)? They deal with flashlight modification.

M

 

[BShanahan14rulz]

Go to CPF. I will say that the sources that collimate best (and hence, throw best) are laser diodes because of the sheer brightness coming from mere nanometers-wide spot.

Definitely check out CPF for flashlight mods. (DEFT comes to mind....)

 

[aXit]

I will say that the sources that collimate best (and hence, throw best) are laser diodes because of the sheer brightness coming from mere nanometers-wide spot.

Not necessarily, the biggest reason that lasers collimate so well with optics is because laser light is monochromatic, all the light refracts through optics to a constant and predictable degree. With a mix of wavelengths, you get something called chromatic aberration.

 

[randomlugia]

I would use an aspheric lens, no reflector. You can get these from CPF market place or KD.

Or the Tiablo A9s: