Patent ID: 7522325
Filing Date: 2009-04-21
Classification: B41J,G02B

Abstract:
1. A light scanning device comprising: a light source; a lens which converts a light emitted from the light source to a parallel light flux; an oscillating mirror which oscillates rotationally and changes a reflection direction of the light flux from the lens to make scanning; a mirror support body which supports the oscillating mirror and which includes a first opening larger than the oscillating mirror; a light shield wall which is disposed between the lens and the oscillating mirror and which includes a second opening; and a diaphragm which is disposed between the light source and the light shield wall and which includes a third opening, wherein a relation expression A where W indicates a width of the second opening in any direction orthogonal to an optical axis, A B indicates a width of the first opening in the direction corresponding to the direction of the width W of the second opening.