| 摘要 |
PURPOSE: To accurately position a light source relative to a reference part by means of a simple structure by forming a positioning member of a separate- metallic part in a supporting body, and shifting a connecting member on the surface of the positioning member in the mutually orthogonal direction before fixing it in the positioning member. CONSTITUTION: A positioning member 14 is made of an independent metallic part in a supporting body 10, and a connecting member 16, which can be shifted in the mutually orthogonal direction on a surface 19 of the positioning member 14 before it is fixed to the positioning member 14, is fixed to the positioning member 14. A light source 4 positioned on a reference line 17 concentrically with it is separated from the positioning member 14 by a distance (d). This is because a supporting body 10 is provided with two joint points fixed after adjustment, that is, a first joint part between a holding member 12 and the connecting member 16 and a second joint part between the connecting member 15 and the positioning member 14, even through the light source 4 is positioned diagonally. In this way, an axis 5 of the light source 4 can be positioned accurately. |
