Invention Grant
US09431445B2 Reflective optical sensor, image forming apparatus, and surface information detecting method 有权
反射光学传感器,图像形成装置和表面信息检测方法

Reflective optical sensor, image forming apparatus, and surface information detecting method
Abstract:
A reflective optical sensor for detecting surface information on a moving element moving in a certain direction includes at least one light emitter, a light emitting lens provided between the light emitter and a surface of the moving element and formed to become conjugated with the light emitter in the moving direction of the moving element in a longer distance from the light emitter than in a vertical direction relative to the moving direction, at least one light receiver, and a light receiving lens provided between the light receiver and the surface of the moving element.
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