Optical fiber winding reel and reel-wound optical fiber

摘要

An optical fiber winding reel of the invention includes: a cylindrical main winding body; main flanges provided at both respective ends of the main winding body in an axis direction thereof; and an auxiliary winding body provided outside at least one of the main flanges, wherein a slit that extends toward a central axis line of a reel is formed at part in a circumferential direction of the main flange at which the auxiliary winding body is provided, and both side portions of a position of the main flange at which the slit is formed are a low rigidity region, the low rigidity region has a rigidity locally lower than that of the other portions in a direction orthogonal to a plate surface of the main flange.

主权项

1. An optical fiber winding reel comprising:
a cylindrical main winding body; main flanges provided at both respective ends of the main winding body in an axis direction thereof; and an auxiliary winding body provided outside at least one of the main flanges, wherein: a slit that extends toward a central axis line of a reel is formed at part in a circumferential direction of the main flange at which the auxiliary winding body is provided, the main flange has a low rigidity region and a high rigidity region, the low rigidity region being both side portions which are located near the slit and are formed on the main flange, the high rigidity region being located at a position displaced from the low rigidity region in the circumferential direction of the main flange, and the low rigidity region has rigidity locally lower than that of the high rigidity region in a direction orthogonal to a plate surface of the main flange.