| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a sealed protective structure that satisfies a high-rating environmental standard and is enabled to easily perform replacement of optical components, adjustment of light axis, etc., in a laser processing head for an optical fiber transmission system.SOLUTION: A laser processing head 10 includes: a head body 14 equivalent to a conventional laser processing head; and a substantially rectangular parallelepiped cover body 20 covering around the head body 14. In the laser processing head, an opening 18 for exposing a body laser emission port 34 of the head body 14 to the outside is provided and a flange 38 is mounted to the opening 18. A lens unit 42 storing an fθlens 40 is detachably mounted to the flange 38 while providing a sealed state.</p> |
