In this approach, each cylindrical lens that is created by the
acoustic wave covers multi pixels for a multi-view display. By
adjusting the sound frequency, an AOL lens array, viz. multiple
pitches of lens array can be generated. The pitch of a lens array
means the width of each cylindrical lens, and is measured in LPI
(lines per in.). The relationship between lens pitch (PL) of AOL and
acoustic wave can be described by