With a detailed instructions video, anyone can build it at home - you just need access to a 3D printer and have to buy a Raspberry Pi computer and an 8MP Raspberry Pi camera.
Assembly instructions: https://github.com/IBM/MicroscoPy
Read more here: https://ibm-research.medium.com/ibm-open-sources-300-fully-functional-lego-microscope-design-248a6cdc81bf