Need a small (less than 30mm aspherical lense for a SST-90 project
I'm currently working on a project prototype (I don't want to be too specific, being that It's been suggested that I patent it when I have a working prototype) that uses a Luminus SST-90 and a Cree XM-L.
I don't really know that much about raw optics, so if anybody know a good source of info in the internet I'll be happy to read it.
But what I'm looking for is something that will give about 18-24" at about 15' so about 5.7-7.6 degrees (full angle, not half). I would like it to wast as little light as possible (in the for of spill). I realize that a small aspherical lens is not the best for light transmission but I cant really fit anything bigger than about 30mm, and a 25mm lens would really be better... The cost of the lens isn't really a concern, though lab created diamond might be a bit out of the price range.
Also, if a 45x90 reflector for the XM-L comes to mind... I'm also looking for that too... Thanks!
Re: Need a small (less than 30mm aspherical lense for a SST-90 project
Sounds interesting. Usually aspherical lenses benefit from the smallest emitter possible (EZ900?) which neither of those are. It will also have to be pretty long or that SST-90 will be very under driven.