Spectroradiometer StellarNet

These instruments are calibrated to measure the spectral irradiance in units of watts m-2 (watts per meter2) over the wavelength range in nanometers (nm) provided by the selected spectrometer model. The factory performs a calibration for the appropriate wavelength range from 300-850nm or 350-1100nm using an NIST traceable calibration source lamp. This irradiance calibration service (IRRAD-CAL) is optional. If the user has an appropriate irradiance calibration source lamp, a field re-calibration can be easily performed using the included SpectraWiz software. The calibrated spectroradiometer can be used to measure LED absolute intensity, xy chromaticity (CIE 1931), purity, and dominant wavelength.

The spectrometer instruments have a slit installed to set optical resolution at 3nm for the concave grating unit and 3.2nm for other plane grating units. The units are calibrated with an F400-VIS fiber optic cable that can be attached to either a cosine corrector or an integrating sphere. The units provide 7 decades of dynamic range.

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