Patent ID: 6292285
Filing Date: 2001-09-18
Classification: G02B

Abstract:
A dual beam raster output scanning system comprisinga light source emitting a first light beam that is modulated in accordance with an input video data signal and a second light beam that is modulated in accordance with an input video data signal,a first photoreceptor and a second photoreceptor, anda rotating polygon mirror having a plurality of facets,each facet having an upper facet surface having a first tilt angle relative to the axis of rotation of said rotating polygon mirror and a lower facet surface having a second tilt angle relative to the axis of rotation of said rotating polygon mirror, said second tilt angle being different from said first tilt angle,said upper facet surface reflecting said first modulated light beam to scan across a line on said first photoreceptor, and said lower facet surface reflecting said second modulated light beam to scan across a line on said second photoreceptor.