Patent ID: 7145589
Filing Date: 2006-12-05
Classification: B41J,G02B,H04N

Abstract:
1. A light scanning apparatus configured to scan a scanned face with a light beam, comprising: a liquid crystal element configured to deflect the light beam to adjust the position of a light spot of said light beam formed on the scanned face, said liquid crystal element being provided between a light source and a polygon mirror; and a compensating unit configured to compensate a light intensity of the light beam at the scanned face due to a change caused by an adjustment of a position of the light spot, wherein said light scanning apparatus scans said scanned face with a plurality of N light beams emitted by N light sources, and said liquid crystal element further comprises at least N-1 deflecting units located between said light source and said polygon mirror, wherein each of the deflecting units deflects a corresponding one of the plurality of light beams in sub-scan directions and adjusts scan line pitch.