| 摘要 |
PURPOSE:To easily and inexpensively lock an optical element by attaching a shield body to the position, where a coupling hole of an optical connector and a drawing hole of L-shaped metal fittings are provided, on a backboard through attaching pins while giving a number of degrees of freedom in the vertical direction. CONSTITUTION:A notched part 8-1, which has such width that the outside of an optical connector 5 is loosely fitted to this part 8-1, is provided in the center part to form vertically divided tongue pieces 8a and 8b, and the tongue piece 8b is formed with a height higher than that of the flange of a lock screw 4 and in parallel with the other face, and attaching pins 9 are inserted to narrow and long holes 8-2 to attach a shield body 8, on which two holes 8-2 are linearly arranged in the direction of a solid-line arrow, to such position that the shield body 8 covers a coupling round hole 1-1 of the optical connector 5 and the drawing hole of L-shaped metal fittings 3 on a backboard 1. When the optical connector 5 is detached, the shield body 8 falls in the direction of the arrow by its own weight to automatically intercept the light of an optical element 7. |
