Eliminate reflections
If you’re working with a reflective surface or an object that is covered in liquid residue, an added light source to your digital microscope might causes reflections. Let’s say you’re working with a PCB. The light source can cause reflections on smooth surfaces of the board, interfering with the image quality. In this case, a polarizer set will filter out the light causing reflections, allowing the digital microscope to create a much crisper image to work with and store for documentation purposes.
Another application for the polarizer set is if you’re working with seeds. More specifically seeds that have been covered in a liquid. Using a polarizer set will eliminate reflections created by the liquid still covering the seeds.