| 摘要 |
PROBLEM TO BE SOLVED: To simply accurately register the cutting position of a material to be cut and the cutting position of a cutter using a laser light. SOLUTION: A convex lens 26b for focusing the laser light L which is movable parallel on a laser optical axis, is provided forward of a laser light source 26b for a laser oscillator 26. In addition, a columnar lens 26f which makes the laser light L linear is provided forward of the convex lens 26b. Further, it is possible to adjust the linear width of the laser light L by moving the convex lens 26b parallel on the laser optical axis.
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