| 摘要 |
PURPOSE: A plotting device is provided to condense light beams from a plurality of lasers or light emitting diodes by using a single optical unit, thereby preventing the increase of the device and simply making the radiated light beams uniform. CONSTITUTION: In a plotting device, an optical fiber bundle(15) formed of a plurality of optical fibers inducing laser beams or light emitting diode beams and disposed rectilinearly focuses on a surface of a reaction layer of an object material by using a single optical element, wherein the optical fiber bundle has a V-shaped groove block(51) with a plurality of V-shaped grooves in which optical fibers(18) are adhered by a first adhesive agent(54a), a pressing plate(53) positioned on the optical fibers, and a resin layer formed of a second adhesive agent(54b) positioned on the first adhesive agent.
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