I think LED technology would fill that gap just fine now. I have a 1W LED that is blinding to look at, and I havent even got the chance to drive it to its maximum (or a little udner just to be safe :lol: )
A 5W LED is rated as a class II laser if I recall correctly, and it would emit nicely distributed, pure white light.
Even an 4 cd LED is blinding to look at.I used it in as an power indicator and it roled some paper from an chewing gum around it to keep it from blinding me.(not to mentchon the 20 cd green)I then made an color mixning experement whith the red green and blue.I founf out thet if a reflected it off a sheet of paper the colors mixed perfectly.(and it iluminated the wlone wall)