ULTRAVIOLET IRRADIATING DEVICE

摘要

PURPOSE:To obtain the titled device capable of curing efficiently an ultraviolet- setting resin coated on an optical fiber by specifying the major diameter/minor diameter ratio of the elliptic form of the inner circumferential surface of a reflector having an elliptic cylinder-shaped specular inner circumferential surface. CONSTITUTION:A reflector 3 having an elliptic cylinder-shaped inner circumferential surface having 1.02-1.3 major diameter/minor diameter ratio is halved in the direction of the major axis, and assembled and fixed in a case body 10. An air-cooled high-voltage mercury-vapor lamp or an ultraviolet generating source 2 having a light-emitting tube 7 wherein Hg and a metal other than Hg are enclosed and which has 12-24mm. diameter and >=15cm light-emitting diameter is arranged and fixed on the center axis of the first focus of the specular surface of the reflector 3 or around the center axis, and an ultraviolet-transmissive hollow tube 1 is arranged and fixed on the center axis of the second focus or around the center axis. And an opening part for cooling air having an air filter 4 is formed on one side surface of the case body 10, and an air discharge duct 6 is provided.