FOCUS started already back in 2010 to design, build and install the electron optics for the first tungsten-based Imaging 2D Spinfilter prototype (Tusche et al., Appl. Phys. Lett. 99, 032505 (2011), doi:10.1063/1.3611648.)
The first two FOCUS-built and Iridium-based 2D Imaging Spinfilter in operation are located at
ELI ALPS (www.eli-alps.hu) and Trondheim University
( https://sites.google.com/site/quantumwells/news ).
At the latter you also can see first spin-resolved ARPES data from the NanoESCA: