Tightest reflector?

[k00zk0]

I need an idea for an object to use as a reflector to make the tightest beam from an incandescent light bulb. I'm building my own flashlight here. The problem is that this reflector it has now is dichroic, and I can't have infra red light behind the light (batteries will burst).

I was thinking of taking a metal shot glass, tall and thin, and drilling out the bottom for the light. Another thing would be to attach some sort of soft long brush to a drill and letting it sit inside buffing the shot glass till its mirror reflective on the inside.

An alternative would be if someone would provide me with another 12v incandescent light bulb with a normal reflector that throws a tight beam, no greater than 100 watts, and light output over 4000 lumens. Try to find the most efficient light possable for this power range. I think I've seen like 8000 lumens before somewhere, I don't remember. What I want is the brightest tightest stream of light (that can also light things on fire, for when its needed like camping for example) for purchase online or locally somewhere.

Thanks for all your help.

 

[LowTEC]

Mag623 with a FM3 head fits your bill? but the 8 minutes run time might not be ideal for camping :laughing:

 

[k00zk0]

No no, what I am looking for is just the bulb. The Mag623 uses the Osram 64623 which outputs 4500 lumens, I was going to buy this bulb but then noticed Amazon doesn't ship to Canada. I want something even brighter, if its available. All I need is the bulb with a reflector, or a good idea for a tight-throw reflector to use with what I got, but if you see or know of a very efficient and bright bulb tell me.

I've looked through some catalogues and i think i remember seeing 20,000 lux (not sure about lux's relation to lumens) with a 10 degree throw. That would be perfect, actually a bit too tight but powerful.

Any help greatly appreciated.

Edit: With the 12 NiMH cells I'm runnign this off of I get about an hour of run at 100 watts drain (or thats what I should get )

I'm putting two switches into it, one at 2 volts for normal use and one at 14.4 volts for ignition and distance throw.

 

[Icebreak]

Interesting question.

A funnel might be a bad collimator. Nothing tight coming from it.

A wok might work but would be a little unwieldy.

Take the lowly chicken egg. Empty it then reflectorize the interior with virtually 100% efficient reflective material. Virtually model a source of light and float it inside the egg.

There will be two sweet spots in the egg at each end that will reflect the rays axially in either direction. The perfect photon management system. Except you won't have a beam.

Darn. I guess we will have to chop a third of it off to let the light out. Hmmm 1/3. OK 33.33 from 100 is 66.67. Then subtract a little for the heck of it and you get your 65% efficiency.

Here is a regulated metal egg:

Here are a couple of nice egg reflectors:

So what happened to that perfect ray management system? Dang. 35% chopped right off leaving you with 65%. If only we could just keep the shape intact but have a reflective medium that was also invisible.

Enter TIR. I've thought that it would work for some time now and I guess Luna thinks it has possibilities. How about this one? Focusable. Yeah.

...I don't profess to be an expert of any flashlight technology...

- Jeff

Here's a long but interesting discussion started by _js_ about bLu vs. tLu: IS confirms 65% conversion factor

 

[Paul_in_Maryland]

Pelican's 2C plastic light has the tightest collimation I've ever seen--likie a laser. I forget the model name or number; it's sold to plumbers.

(added): It's the Pelican Super Pelilite.