Patent ID: 8820809
Filing Date: 2014-09-02
Classification: H01L

Abstract:
1. A robot hand comprising: a holding unit that holds a thin-plate-shaped workpiece; a bottom of which a leading part is coupled to the holding unit and a tail part is rotatably coupled to an arm; an optical sensor that is provided in the bottom and includes a projector and a photoreceiver; and first and second reflecting members that are provided in the holding unit, the first reflecting member reflecting light emitted linearly and directly from the projector in the bottom to make the light pass through a holding area of the workpiece, and the second reflecting member reflecting the light from the first reflecting member to make the light linearly and directly reach the photoreceiver so as to form an optical path, wherein the holding unit includes a plurality of salient portions that contacts the workpiece to hold the workpiece, and the reflecting members are provided in at least two of the salient portions.