Spectroradiometer

Spectroradiometer is usually used with a integrating sphere to measure the photometric and colorimetric parameters of all kinds of lamps. Relative spectral power distribution P(λ), chromaticity coordinate (x,y), (u,v), correlated color temperature Tc, color rendering index Ra, dominant wavelength, peak wavelength, spectral bandwidth, color purity, color ratio, SDCM, luminous flux, etc.