Halloween has come and gone and I did promise you pictures of a pumpkin being lit by a 100W LED. Not a hundred watt equivalent, but one that draws 100W.
This is full-on and with the top cracked a bit to let more photons out. It hurts to look at and you don’t dare look inside the pumpkin.
Next I will collimate (as much as you can collimate a huge extended source without an asphere and lots of distance) the LED output and send it through a spare prism I have laying around… Dark Side of the Moon. Gonna be a hell of a demagnification. Might have to search the net for some lenses to do it. They are cheap on eBay.
Maybe more later. Maybe.