What is Spectral Power Distribution?

Spectral Power Distribution (SPD) describes how much power (or intensity) a light source emits at each wavelength across the visible spectrum. In simpler terms, it’s the “rainbow” and “fingerprint” of a light source — showing which colors (wavelengths) of light are present and how strong each one is. This webinar will help you understand the impact SPD has on both CCT and CRI.