When we talk about lighting in greenhouse horticulture, there are quite a few complex formulas involved. Calculate the values you need yourself with the Ledgnd Calculators.
Lux to μmol (PAR)
In this calculator, you can convert your current Lux values in the greenhouse to PAR.
DLI Calculator (PPFD to DLI)
In this calculator, you can calculate the current DLI values of your current assimilation lighting.