The sub 4 dolor 365nm 3 watt leds came into day and they are better then i had expected, i don't have a way to measure the output in mw but here is a shot from my living room, exposure time is 2 seconds with the aperture of about F2.0, the led is 8 feet from the wall.
distance about 3 feet but this rock normally florescence under short wave UV
the led does have some visible light but is better then what i was using, i am running one led at 700ma, 4 will be over kill for my original idea
Remember Remember The 8th of November, When No One Stood, but Kneel, In Surrender
In a popular government when the laws have ceased to be executed, as this can come only from the corruption of the republic, the state is already lost. Montesquieu