Patent ID: 7859734
Filing Date: 2010-12-28
Classification: G02B

Abstract:
1. A light scanning device comprising: a light source which emits a light beam; an oscillating mirror which oscillates rotationally to reflect the light beam; an optical system which is disposed between the oscillating mirror and a target, and which is configured to convert the light beam reflected by the oscillating mirror to be scanned over a scanning line on the target at a constant speed when an oscillation amplitude of the light beam by the oscillating mirror is a reference value; a detection unit which detects the light beam at least one position within a scanning range of the light beam; a modulation controller which controls modulation of the light beam based on external data; and a timing correction unit which corrects a modulation timing by the modulation controller based on two consecutive detection times of the light beam detected by the detection unit and two consecutive detection times of the light beam detected by the detection unit when the oscillation amplitude of the light beam by the oscillating mirror is the reference value.