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Forums
Engineering
General Engineering
Optics for High Resolution Laser Imaging: Finding the Best Path
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[QUOTE="Baluncore, post: 6859568, member: 447632"] Will you draw vectors or use a raster scan ? 500 mm / 0.08 mm = 6250 elements = 13 bit resolution. How accurate can your galvanometer and mirror be ? How long will the mirror take to settle to the required resolution ? How long must each element be exposed for ? 6250 x 6250 = 39 Mega pixels. The time taken to draw the image will be very much longer than you expect. 2 msec * 39 M = 78,125 sec = 1302 minutes = 21.7 hours = all day. The system you show is only a 1D system, so the flat mirror does not obstruct the parabolic mirror. 2D is impossible without a diagonal optical path and a 2D galvanometer. Note that a 2D parabolic mirror is needed to keep the ray perpendicular to the target, so it must be the same size as the target. That would be circa 710 mm diameter for the 500x500 mm target. Consider a raster scan, using a 1D system, as the bridge of an XY router. You will still need the 1D laser printer optical path. [/QUOTE]
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Optics for High Resolution Laser Imaging: Finding the Best Path
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