OpenFlexure Delta Stage
The microscope works nicely for simple microscopy, with 12mm lateral travel and 4mm travel in the focus direction. However, the optics module moves - that’s less than ideal if you want to use more complicated optics than just bright field. The block stage has a single stage that moves in X, Y, and Z, but it’s really just designed for fine motion - its 2mm range is less than we’d like for microscopy. The delta stage aims to solve this, by moving the sample in 3D with a mechanism very similar to the microscope’s. That should allow it to get similar range of travel, but with totally static optics. We strongly suspect there will also be other fun things to do with it that don’t involve microscopes at all.
Where can I find it?
The current version of the delta stage lives on our Gitlab repository, although we have not yet set up auto-builds of the STL files, or written specific documentation. However, assembly is more or less the same as for the microscope so if you’d like to build one, have a look at the microscope instructions. Even better, send us a pull request with your assembly photos! It’s not yet described in any papers from our group - but it has already popped up in Scientific Reports and Lab on the Cheap in some very nice work by the Cambridge Sensors CDT students on an Optical Projection Tomography system.