The laser beam passes through the F theta lens system and will produce off-axis deflection. Relative to an ideal plane, abnormal images or distortion will appear on the marking surface.
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Wow! Your collection is amazing! Even if the camera can't fully capture the beauty of the 561nm pen, those comparison shots are a nice touch. It's always hard to demonstrate the differences among wavelengths, but the work you put in is appreciated. 👏📸 The wide range of colors is attractive. Keep...