MULTIPLE DATA SURFACE DATA STORAGE SYSTEM AND METHOD

摘要

AN OPTICAL DATA STORAGE SYSTEM COMPRISES A MULTIPLE DATA SURFACE MEDIUM AND OPTICAL HEAD. THE MEDIUM COMPRISES A PLURALITY OF SUBSTRATES SEPARATED BY A LIGHT TRANSMISSIVE MEDIUM. DATA SURFACES ARE LOCATED ON THE SUBSTRATE SURFACES WHICH LIE ADJACENT A LIGHT TRANSMISSIVE MEDIUM. THE DATA SURFACES ARE SUBSTANTIALLY LIGHT TRANSMISSIVE. THE OPTICAL HEAD INCLUDES AN ABERRATION COMPENSATOR TO ALLOW THE HEAD TO FOCUS ONTO THE DIFFERENT DATA SURFACES AND A FILTER TO SCREEN OUT UNWANTED REFLECTED LIGHT.