NirUVis is an add-on frequency mixer for TOPAS-Prime series devices.  A single enclosed unit offers an easy access to wavelengths from 189nm to 1160nm. NirUVis consists of three computer controlled nonlinear crystal stages combined with wavelength separators in a monolithic housing. Output is generated by employing a combination of second and fourth harmonic generation as well as sum frequency generation. In comparison with separately standing crystal stages, NirUVis offers higher conversion efficiency in certain wavelength ranges, ease of operation, compact design, and low environmental sensitivity. In addition, wavelength separation is added after each nonlinear interaction ensuring higher output pulse contrast. NirUVis can be positioned both after and sideways of TOPAS-Prime device and is easy compatible with NDFG units.