紫色半導体レーザーの精密集光による樹脂表面への染・顔料マーキング [in Japanese] Micro-Marking Using Precise Beam Focusing of Violet Laser Diode with Dyestuff and Pigments on Plastic Surfaces [in Japanese]
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The wavefront distortion of a beam from a single-mode violet laser diode (VLD) with a collimator lens was measured and corrected to provide a precise focal spot. This output beam was focused on a plastic plate to which dyestuff or pigments were added to enable color micro-marking without an absorbent. The part irradiated by the laser was marked, and unfixed dyestuff or pigments were removed with ethyl alcohol. Using this VLD, color micro-marking of 100μm font size on the plastic plate was achieved.
rle 35(2), 100-104, 2007-02-15
The Laser Society of Japan