The Trouble with P60 MC-Es

[Daekar]

So it seems that it's just not possible (right now) to get a satisfactory narrow beam out of a P60-sized TIR optic with an MC-E emitter. So, what to do for that lovely 2x18650 Leef or FM body that's begging for more LED power? I have a few ideas I'd like to offer for discussion:

1) If you're going for absolutely maximum output instead of neutral color, try using a Surefire Turbohead with a P7 on a pedastal heatsink with the stock reflector.

2) If you want to stick with a 5A MC-E, make a drop-in using a larger-diameter reflector like the 30mm 5-degree model by Polymer Optics. 30mm translates to about 1.181", and a stock 6PD head (don't have a 6P head) measures about 1.245" on the OD, leaving a wall-thickness of 0.032". In my opinion, that's a little too thin, but doable in extreme cases. Possibility for custom C-series head? Make the head wider to accomadate a wider, more effective optic.

3) If you want an MC-E with a reflector, make a drop-in that uses a deeper reflector and custom head that is longer to accomadate it.

4) Any other ideas that come to you!


EDIT: I thought I'd add some links to MC-E optics:

5-deg:
Polymer Optics 30mm Reflector, Part Number 225 (Datasheet with beamshot)
10-deg:
Polymer Optics Diffuse Collimator Lens, Part Number 186 (Datasheet with beamshot)
Ledil Boom-MC-S Reflector, Part Number C10569 (Datasheet with beamshot)
19-deg:
Ledil Boom-MC-M Reflector, Part Number C10570 (Datasheet with beamshot)
24-deg:
Ledil Boom-MC-W Reflector, Part Number C10571 (Datasheet with beamshot)
25-deg:
Polymer Optics Diffuse Collimator Lens, Part Number 219 (Datasheet with beamshot)
25x10-deg:
Polymer Optics Diffuse Line Lens, Part Number 218 (Datasheet with beamshot)

 

[Al Combs]

I've seen a few posts saying Ledil's Boom-MC-S is one of the best so far. It's the same kind of hexagonal shape as Polymer Optics 225 series. The MC-S has a 10° FWHM angle. That's twice the diameter of the 225's beam. But considering it's only 22.2 mm at max diameter compared to 37.5 mm for the 225, that's pretty good. Should be able to fit in a custom P60 without modification to the reflector.

 

[DaFABRICATA]

That Boom MC-S reflector is great!
Large hot-spot, but provides a nice smooth beam.
It would easily fit in a P60 type drop-in and allow for more mass to the heatsink.
I drilled out the reflector of my KL4 and replaced it with the Boom MC-S to drasticly change the beam with much improvement.

 

[darkzero]

Nice job Tim! :twothumbs

 

[collector]

Awesome !