Patent ID: 7190435
Filing Date: 2007-03-13
Classification: G03B

Abstract:
1. A pattern writing apparatus for writing a pattern by light irradiation on a photosensitive material, comprising: a spatial light modulator applying a modulated light beam to an irradiation region group arrayed in a lattice arrangement on a photosensitive material; a main scanning mechanism for scanning said irradiation region group over a photosensitive material in a main scanning direction that is tilted relative to a direction of arrangement of said irradiation region group, so that a plurality of irradiation regions pass over each of writing regions included in a writing region group fixed on said photosensitive material; a sub-scanning mechanism for intermittently moving said irradiation region group relative to a photosensitive material in a sub-scanning direction orthogonal to said main scanning direction by a distance shorter than a width of said irradiation region group in said sub-scanning direction; and a controller controlling said spatial light modulator in synchronization with main scanning of said irradiation region group.