I'm in the midst of a challenge with some mates, which is to build the most evil primary light imaginable. It should have the tightest beam, with the most intensity. At a minimum it needs to destroy a 50w HID primary.
From what I've seen, a SST-90 at 9A with aspheric lens will do this. I know very little about aspherics.
Ideally I want to make the head as small as possible, though can any confirm:
I'll be driving it with this sucker. http://www.candlepowerforums.com/vb/...-SST-50-SST-90
- A good aspheric lens for this job? I've got some el cheapo aspheric lenses from dx (52mm and 28mm), though I suspect there may be better out there.
- As I'll be machining the head to match the lens, size is a factor as I can't work any material bigger than 70mm OD on my small lathe. Does big = better when it comes to aspherics?
- Distance between LED and lens, is this just trial and error or is there science to it?
- Water and the aspheric, I assume that water cannot hit the domed aspheric, and that a second lens must be seal the housing. ie. keep the aspheric dry.
Power source will be a 5S2P 18v 5.2ah lipo pack, simply because I have batteries lying around from a few video solutions.