Here is closer look at some interesting features of Photon prototype:

LED Box Adapter:

Sometimes directed light isn't needed. Instead what is needed is illumination of large surface area. That is where this adapter comes in. It is basically simple bolt and nut design. The idea is to use cardboard box lined with reflective material(like aluminum foil) to achieve effect of so called "light box". This approach is used when illumination of larger surface area is needed. Reflective foil reflects UV rays to object where instead they would be wasted.

UV Filter:

Since long UV exposure is harmful, a way to protect the operator of this device is needed. That is why this protective filter was designed. It's just plain orange plexiglass sheet. The reason why this works is because the sheet blocks all wavelengths except orange(620nm). This won't be useful against strong directed light like laser but it will be more than enough for reflected UV rays from illuminated surface. Yellow or red plexiglass can also be used. Here is simple demonstration of effectiveness of this simple filter. Fluorescent residue on PCB is conformal coating used to protect PCB from corrosion.