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How large is the pattern at a given distance?

The image size scales linearly with distance. With a PLM module at approx. 30° opening angle, 1 m distance gives an image of around 30 cm diagonal. At 2 m this doubles to 60 cm; at 0.5 m it halves to 15 cm. Recommended operating distance: 5 cm to approx. 100 cm. Beyond 100 cm the line sharpness drops noticeably, because DOE optics widen the line proportionally with distance. For very large distances we recommend the FloorPoint (100 mW at 532 nm) or an ILP laser projector.