Take the prism pill

I finished working at Unilever this week, but I still have one or two things to post about. First of all, the mystery optical element is actually a polarizer, but only for certain wavelengths.
Anyway, we needed a special kind of prism for an experiment, so ThorLabs sent us a sample. A teeny tiny sample. They packed it inside a caplet:They were also kind enough to provide food!
Most of this wasn't kosher, but the thought was nice.