An analytical expression for spot moving speed on the former vibrating mirror of the polygonal mirror scanning system objective is derived from geometrical optical principle.

根据几何光学原理，推导出转镜-振镜扫描系统物镜前振镜上光斑移动速度的解析表达式。

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This invention is related to an image forming device including an optical scanning device which is able to adjust the irradiation from a beam to a vibrating mirror in a simpler means.

本发明涉及一种包含能够以更简单的方式调整光束对振动镜照射的光扫描装置的图像形成装置。

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Vibrating mirror, light writing device, and image forming apparatus.

振动镜，光写设备，以及成像装置。

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