| 摘要 |
PURPOSE:To detect the position of a wiring board correctly by forming a detecting conductor in the position, where other wiring conductors are not formed simultaneously with a wiring conductor, on one surface of the board of translucent electrical insulating material; by applying light to the board from the other surface side; and by picking up the image of the position-sensing conductor through an image pickup means from the one surface side. CONSTITUTION:On one surface 11a of a board 11, a wiring conductor ranging to picture-mounting parts is formed in a body part 17. The board 11 is composed of materials such as glass fiber and is translucent. A separable part to be grasped 15 is formed in the board 11. A position-sensing conductor 16 is formed in the part to be grasped 15. A light source 20 is provided on the other surface 1b side of the board 11 and light is applied to the board 11 from the light source 20. On the one surface 11a side, a TV camera 21 being an image pickup means is arranged to pick up the image of the conductor 16. Even if there is irregularity in the protective layer on the surface of the conductor 16, the shape of the position-forming conductor can be correctly detected without being adversely affected by the irregularity. |
