| 摘要 |
PROBLEM TO BE SOLVED: To provide a laser marking device capable of preventing linear light from varying in light intensity. SOLUTION: The laser marking device 1 is equipped with a laser light source 24, a beam splitter 230, wide-angle lenses 26a, 26b and 26c, and a plumbing mechanism 22. The beam splitter 230 splits a laser beam emitted from the laser light source 24 into a plurality of laser beams in different directions. The wide-angle lenses 26a, 26b and 26c convert the laser beams split by the beam splitter 230 into the linear light. The plumbing mechanism 22 supports the beam splitter 230 such that the split laser beams are emitted from the wide-angle lenses 26a, 26b and 26c in prescribed directions with respect to the horizontal plane. The beam splitter 230 has a half mirror 233 whose one surface is coated with a non-polarization film 233a, and the laser beam enters the one surface. COPYRIGHT: (C)2007,JPO&INPIT
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