Optical Design of an Integrated Paschen–Runge Spectrometer by Using a Multigrating Structure

An integrated direct-reading spectrometer scheme using seven concave gratings is proposed. At present, the optical design simulation has been completed, and subsequent physical may be carried out according to results. Ray-tracing software (Zemax) used divide spectrum on grating into bands, an area array detector receive spectral signals simultaneously, which reduces volume of improves consistency. Using this method, a covering 230–440 nm designed, resolution center wavelength corresponding windows 230–260 nm, 260–290 290–320 320–350 350–380 380–410 410–440 can reach 0.0974 0.0652 0.0361 0.0157 0.0838 0.0872 0.1471 nm.