| 摘要 |
PURPOSE:To adjust an angle by connecting a cord capable of drawing to any of a light emitting section or a light receiving section to the light receiving section or the light emitting section of an opposite party and viewing the relation of the cord and the light receiving section and the light emitting section. CONSTITUTION:A pulling-out cord 17 is drawn out from a cord case 26 by a ring section 21 and the ring section 21 is latched to a hook section 22 after the cord is hooked to the position of a light receiving section 11. Thus, since the angle of the light emitting section 1 and the light receiving section 11 is viewed based on the pulling-out cord 17, the projection angle of the light emitting section 1 and the light receiving angle of the light receiving section 11 are adjusted based on the pulling-out cord 17. In the case of the light emitting section 1, the vertical angle is adjusted by an oscillation section 23 and the horizontal angle is adjusted by turning the entire light emitting section 1 with a base 24. On the other hand, in the case of the light receiving section 11, the vertical angle is adjusted by the oscillation section 10, and the horizontal angle is adjusted by turning the entire light receiving section 11 with the base 25. |
