| 摘要 |
PROBLEM TO BE SOLVED: To provide the subject equipment enabling an electron beam generated to effectively to irradiate a coating material applied to optical fibers and therefore enabling hardening processing to be speeded up with the compact equipment. SOLUTION: This electron beam irradiation equipment is constituted as follows: a window 4 having a fan-shaped, circular or elliptic shape is formed in an equipment main body 1 having a cross section showing a fan-shaped, circular or elliptic shape and also a filament 2 emitting thermoelectrons is placed in a form of an arc, a circular ring, an elliptic ring or a spiral in such a way as to surround the window 4 in the main body 1; a grid 3 for controlling thermoelectrons generated from the filament in such a way as to travel straight toward the central part of the equipment main body is placed between the filament and the window; and an thermoelectron beam generated from the filament and controlled to travel straight toward the central part of the equipment main body penetrates the window 4 and irradiates a fine line traveling in a hollow central part of the equipment main body.
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