Sources for large deep-dish reflectors?

[kramer5150]

I'm brainstorming a 55W HID project, and am having difficulty locating a reflector supplier.

My goal is a pencil-beam, with no spill/flood. Imagine a small 12V tank light, that you can hand carry for short distances. A 1.5 mile lightsaber is my goal. I am already aware that there are commercially available 35W spotlights that reach up to ~a mile, but I want to surpass that if I can.

So I need a parabolic (I think) reflector dish thats:
-Smooth
-High reflective efficiency, hopefully higher reflective efficiency than commercially available spotlights.
-Heat resistant
-Deep and wide. I would like the reflector to fit inside a ~10 inch diameter tube, but can certainly go smaller than that if it will get the job done.
-It should be able to achieve focus from a standard automotive HID bulb, so a focal length of about .75".
-Beam artifacts and rings are not a concern.

???? Does this even exist?

thanks!!

 

[elumen8]

Here's a link to Phoenix Electroformed Products. I've never used them, but it looks like a possible supplier/manufacturer.
http://www.phoenixelectroforms.com/

JB

 

[kramer5150]

perfect thanks J!!:thumbsup:

 

[stinky]

This is pretty cool, but may be overkill:

[FONT=Arial, Helvetica, sans-serif]241.3MM DIAMETER, 38.1MM FL PARABOLIC MIRROR, RHODIUM COATED[/FONT]

 

[DM51]

There's a helpful thread here: Anyone tried Phoenix reflectors?