Cell phone microscope

It is a holder for a sample, a lens and a cell phone, which together act as a microscope. There are many set ups like this documented on the Internet, but I wanted to make a sturdy supporting structure. The lens has 7mm diameter and is taken from a cheap laser pointer. Sample is put between a reversal film slide holder, which keeps at least hair pieces well together. There is room for material that diffuses the light evenly behind the sample. I cut some from a diffuser of an old broken LCD monit