| 摘要 |
PURPOSE: A vision inspecting device is provided to obtain the vision of the entire periphery surface of a screw by fine patterns formed on a prism sheet. CONSTITUTION: A vision inspecting device includes a transfer unit (130), a camera (151), and a flat type prism sheet (152). The transfer unit transfers a product having a head unit and a screw body. The camera is arranged at a position on the transfer unit and photographs the product. The prism sheet is arranged perpendicularly on an optical shaft of the camera and includes circular fine patterns (153) so that lights reflected by the lateral surface of the head unit and the screw body are refracted at least one surface and becomes incident into the camera. |
