Light guide panel and apparatus for forming pattern on light guide panel

A pattern forming apparatus for forming a plurality of patterned light guide pattern parts on a light guide panel, the apparatus comprising:

• a pattern design system configured to receive an input of data on a pattern to be formed in a light guide panel;
• a control system configured to connect with the pattern design system and to divide a position signal corresponding to a coordinate value of each pattern to be formed in the light guide panel into two or more signals for transmission;
• two or more header moving units comprising:
• XY moving units each configured to mechanically move up/down and left/right in response to the position signal received from the control system;
• and
• header units each coupled with the XY moving units and configured to reflect laser beams scanned from two or more laser systems to the light guide panel;
• the two or more laser systems configured to output laser beams by pulse signals synchronized with operations of the header moving units;
• beam splitters each positioned within a header unit of the two or more header moving units, the beam splitters being configured to split the laser beams, which are outputted from the laser systems and pass through the header moving units, into two or more laser beams;
• and
• two or more optical units each positioned within a header unit of the two or more header moving units, the two or more optical units being configured to reflect and to collect the two or more laser beams split by the beam splitters;
• and
• an optical control unit configured to independently control each of the two or more optical units according to an optical unit control signal delivered from the control system to vary a distance between focuses of the laser beams forming a groove pair based on a process position on the light guide panel,
• wherein the four or more laser beams each simultaneously outputted from the two or more optical units each are collected as multi-focus beams at a distance on a process surface of the light guide panel.