US Patent 11659290 Light detection system

A system that can acquire a larger amount of information is provided. In the disclosure, calculation processing is performed on a data set including a plurality of pieces of data each including light amount distribution information on a two-dimensional plane that is acquired by a detection unit and time information indicating a time at which the light amount distribution information is acquired. In the calculation processing, among vectors in traveling directions of observation target light, a vector component in a direction orthogonal to the two-dimensional plane is estimated from the data set.