The triangulation laser is a cost-effective means of measuring short distances precisely and thus to digitally capture surfaces pointwise. At this point it is worth referring to the fact that when light waves impinge upon a surface they are deflected or scattered. It is this deflection of the light waves that enables the exact distance between the surface and the sender of the light waves to be determined.
Generally speaking, the laser triangulation method is a good solution when absolute distances between 1 and 50 cm are to be determined with an 1/1000 degree of accuracy. This is perfectly adequate for most industrial applications. Since HSM-MODAL® operates using 5 axis, there is usually no problem to steer the head of HSM-MODAL® with the triangulation laser to be positioned a maximum of 50 cm away from the surface to be scanned.
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