LASER SCANNER

摘要

PURPOSE: A laser scanner is provided to output an incident light to a synchronization detection sensor in a constant angle range by using a synchronized mirror concavely or convexly curved to an incident direction of the light. CONSTITUTION: A scanning part(203) scans the light by moving the light from a light source with a constant linear velocity. A focusing lens(205) has a constant refractive index for a light axis and fits a focus on a photoconductive drum(207) by refracting the scanning light to a main scanning direction and correcting aberration. The synchronized mirror(208) having a curved surface reflects the light from the focusing lens(205). The synchronization detection sensor(209) detects a synchronization signal by receiving the light reflected from the synchronized mirror(205).