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A collimator is a device that narrows a beam of particles or waves. To narrow can mean either to cause the directions of motion to become more aligned in a specific direction (i.e., make collimated light or parallel rays), or to cause the spatial cross section of the beam to become smaller (beam limiting device).
following lasers colours 445nm, 405nm and other blue 450nm , 454 nm ,462nm,473 nm
ideal for 5.6mm laser diodes
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