pretty new to this site and am still playing technical catch-up. i started reading last night about aspherics for the 1st time ever but have had a rough time trying to find any source of well organized information. i've still yet to find a company that may specialize in these. i've read most of the DEFT threads for aspheric LEDs but can't even find sources as to where i can buy the LEDs or other lights being compared to his LEDs. i've found one lense on DX and its not really a true aspheric.
the reason i ask is cause i frequently like to go spearing but often don't bother cause it requires charging aux car batteries hours in advance which then have to be carried down to run the lights (our 40hp outboard can barely crank enough to run one 200K CP light). my only other option is to use DC powered spotlights which at least keeps cords from tripping people but i still have to charge them all and bring 6 or more since they don't last long. this is what i normally do but i usually have to replace 1-2 lights every year cause so many of them are poor quality.
does anyone know of some well organized sources of information or distributors where i can learn more about aspherics in flashlight applications??? i have a couple lights that would probably work well if i could find proper lenses for them but would also like to learn more about purpose-built aspheric lights. it seems like this could bring an end to all the problems w/ weight, run-time, prep-time...etc.