Got one of the inexpensive HID H4 kits.
Light output is fantastic.
Beam pattern is atrocious.
I don't need to see the treetops, nor spot low-flying aircraft.
I'd like to have all that light that's wasted directed at the road.
Any FHE out there?
AFAIK you are looking for something that doesn't exist. The optics of an H4 headlight do not match the beam from a true HID. Could it be done? Probably, moving the arc and focal length might work. Or you could do something like He Man did. I wasn't successful at the search...BINGO! Found it on his web site.
http://kuixihe.com/node/33 (http://kuixihe.com/node/33)
if you go with a straight clear glass it will most likely help tremendously.