Reproducing system for an optical disc.

摘要

A plurality of tracks (44 - 46; 44a - 46a; 44b - 46b) are spirally arranged in a group on an optical disc (25). The tracks in the group are simultaneously radiated by laser beams. Adjacent tracks in the group are disposed at a radial distance d1, and adjacent spots (401, 402, 403) of the laser beams on the tracks are disposed at a radial distance ds which is smaller than the distance d1. <IMAGE>