Spectrophotometer covers the 340–2000 nm range

The PHOTON RT 0420 Ultra spectrophotometer characterizes multilayer optical coatings, including ultranarrow bandpass filters, edge filters with steep slopes, notch filters, and coatings up to OD8. It covers the 340–2000 nm range, has a stray light level of 0.000001%, 0.06 nm spectral resolution, a bandwidth of 0.1 nm, and a slope steepness to 0.02%.