| 摘要 |
<p>PURPOSE:To reduce the size of a main device body and to increase its density by curving arcuately a specifically sectioned tube which has an opening part smaller than the external diameter of an optical fiber in use to a radius of curvature equal to or larger than the radius of proper curvature of the optical fiber cord so that the opening part is on the inner peripheral side. CONSTITUTION:The optical fiber cord 13 is inserted into a curvature radius securing tool 11 from its opening part 12 and changed in direction according to the curvature of the curvature radius securing tool 1. The opening part 12, on the other hand, is set to a size smaller than the outer appearance of the optical fiber cord 13, so the optical fiber cord 13 put in the curvature radius securing tool 1 once never jumps out of the opening part 12 unless artificial external force is applied. Consequently, the curvature of the optical fiber cord is held proper to maintain the performance of optical communication excellently and the ratio of the space in the main device body is reduced because the shape is small, thereby accelerating the size reduction and density increase of the main device body.</p> |
