Patent ID: 8939614
Filing Date: 2015-01-27
Classification: G02B,G02F

Abstract:
1. 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 configured to transmit a position signal corresponding to a coordinate value of each pattern to be formed in the light guide panel; a header moving unit comprising: the laser system configured to output a laser beam by a pulse signal synchronized with an operation of the header moving unit; one or more beam splitters positioned within the header unit and configured to split a laser beam, which is outputted from the laser system and passes through the header moving unit, into two or more laser beams; and two or more optical units positioned within the header unit and configured to reflect and collect each of the two or more laser beams split in the beam splitters, 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 two or more laser beams 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.