1. The problem statement, all variables and given/known data I am looking for a conversion factor that will ultimately get me from units of lux (illumination) which is a weighted scale of light intensity, to watts per square meter, which is not weighted. 2. Relevant equations None availiable 3. The attempt at a solution I am informed that the conversion is different for each wavelength of light, so there may be a conversion table with a list of wavelengths?