First, I'd like to offer a few words of caution. UV light can and will hurt your eyes. This is the exact reason why welders wear goggles. Sunburn on your eyes is no joke. I highly recommend wearing a good pair of sunglasses, or welding goggles if you have them.
|The L-Bracket with the LEDs has been removed.|
I tried several methods for building a suitable reflector/collimator, including dis-assembling and removing elements from various LED flashlights, and even building a simple light-pipe from acyclic rod.
In the end, I decided I was over-thinking it and decided to do something drastic.
|I taped over the lens while removing plastic|
|Most of the optic path removed.|
|Projected onto a sheet of white paper.|
|A little light leakage around the edges can be fixed...|
The next order of business is as follows:
1) Heatsink the LED (probably with a fan)
2) Build a mount for the DLP assembly / heatsinked LED
I'm currently designing a FDM 3d-printed 'carrier' right now.
Stay tuned for part 3, which will include some curing times and the initial design of a pico-SLA machine.