Patent ID: 6185029
Filing Date: 2001-02-06
Classification: G02B

Abstract:
An optical scanner comprising:a light source;a polygon mirror having plural light deflection faces for deflecting a light flux emitted from the light source;a first optical system for introducing the light flux emitted from the light source to the polygon mirror in which the light flux introduced to the polygon mirror has a breadth in a main scanning direction larger than a breadth of one of the light deflection faces in the main scanning direction; anda second optical system for condensing the light flux deflected by the polygon mirror onto a scanned face, wherein the second optical system has a reflection member for reflecting and introducing the light flux onto the scanned face, and the reflection member has a reflectivity varying from a center toward a periphery in the main scanning direction to uniformize substantially a light quantity distribution in the main scanning direction of the light flux on the scanned face.