{HEAD ~ a plurality} of photodiodes integrated in said substrate, {TAIL ~ each} of said photodiodes having a light sensitive region completely disposed only at said surface 
{ HEAD ~ a plurality } of photodiodes integrated in said substrate , { TAIL ~ each } of said photodiodes having a light sensitive region completely disposed only at said surface
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH