Strip neutral density filter for correcting intensity non-uniformity in a raster output scanning system

摘要

A strip neutral density filter varies the Gaussian intensity profile of the modulated light beam in an overfilled raster output scanner to provide a generally uniform intensity light beam spot at the photosensitive medium. The strip neutral density filter is positioned in the light beam path between the emitting laser source and the rotating polygon mirror of the raster output scanner. <IMAGE>