I feel you
1 Thank
I’m gonna try to pick up some large form tracing/washi paper with fine/ultrafine texturing to project the image of an LED/ reflector to it. I’m trying to be able to quantize the phosphor pigments by high res pixelating the die and gridding it. This is just being projected to a wall, but I imagine we’d get a better “image” if we caught it “in line” with the beam.
I’m all about finding practical budget solutions to our lighting analysis tools, lol…$2,000 macro lense/$80 microscope? nah, $20 loupe and a few bucks in thin tracing paper, plus a jury rig stack of old phone books as a projection platform. And a few paper clips as anti-roll. this might also inadvertently address our beam shaping concerns, we could just directly measure the transitive light intensities on an actual flat grid rather than having to account for the inch or so off the grid because of the luxmeter being thicc.
Here’s a better shot, showing the uneven distribution of the reds in the phosphor. I used the imperfections and random scraggles on the wall to do the focus, then manually adjusted the focus of the projection until it came into view
Phones piss me off…it shows me one thing on the screen and captures a completely different thing altogether. The splotchy reds you see in the corners that looks like a bad rosacia is indeed more pronounced than it looks in the photos.
