Single-pass imaging system using spatial light modulator and anamorphic projection optics

摘要

Substantially one-dimensional scan line images at 1200 dpi or greater are generated in response to predetermined scan line image data. A substantially uniform two-dimensional homogenous light field is modulated using a spatial light modulator (120) in accordance with the predetermined scan line image data such that the modulated light forms a two-dimensional modulated light field (119B). The modulated light field (119B) is then anamorphically imaged and concentrated to form the substantially one-dimensional scan line image. The spatial light modulator (120) includes light modulating elements (125) arranged in a two-dimensional array. The light modulating elements (125) are disposed such that each modulating element receives an associated homogenous light portion, and is individually adjustable between an "on" modulated state and an "off" modulated state, whereby in the "on" modulated state each modulating element directs its received light portion onto a corresponding region of the anamorphic optical system, and in the "off" state blocks or diverts the light portion.