| 摘要 |
<p>Disclosed is a jump rope device that includes an optical fiber. The jump rope device according to the present disclosure includes a rope in which the optical fiber is integrated in a transparent tube, and light emitted from a light source built into the handle is transmitted to the optical fiber in order to emit light from the optical fiber. At least one light-emitting area is formed in the optical fiber, and the light-emitting area has multiple micro grooves formed in a cladding that surrounds the core of the optical fiber so that light progressing along the core can be emitted to the outside of the optical fiber.</p> |
