LIGHT BEAM DISPLAY EMPLOYING POLYGON SCAN OPTICS WITH PARALLEL SCAN LINES

摘要

A light beam display employs a polygon reflector (32) to scan one or more light beams (202, 302) in horizontal scan lines on a display screen. A horizontal scan line correction lens (236, 336) is provided in the optical path between the display screen (206) and the polygon reflector (32) to correct scan line bowing. An optical mechanical element (216, 316) is provided for vertically shifting the light beams so as to illuminate different scan lines of the display screen. Control electronics (220) is employed to adjust the timing on a line by line basis to correct vertical pixel line distortion introduced by the correction lens.