Computer-implemented method for designing an interferential stack for an optical component

A computer-implemented method for designing an interferential stack of an antireflective coating for an optical component to minimize the deviation in the optical performance when associated with different substrates, the interferential stack being configured to reduce the refractive index mismatch between a substrate and a base layer (HC) of the optical component, the method comprising the steps of:

• providing (100, 200) a plurality of configurations (AR2 to ARn) of an interferential stack and a plurality of substrates to be associated with the interferential stack,
• determining (300) for each configuration (AR2 to ARn) of the interferential stack a value of at least one optical property representative of the optical performance (OP) of the interferential stack, said value of at least one optical property being determined for each substrate,
• determining (400) for each configuration (AR2 to ARn) a deviation of the optical performance (ΔOP) between the substrates depending on the values of a same configuration determined for each substrate, a deviation of the optical performance (ΔOP) being determined for each optical property,
• selecting (700, 800) a configuration (ARs) of the interferential stack having at least one minimized deviation of the optical performance (ΔOP).