Integration of a conoscopic holography sensor on a CMM

Conoscopic Holography is a non-contact digitizing technique used for verification and reverse engineering tasks. Conoscopic holography share some advantages with other non-contact digitizing techniques: surface digitizing from a secure distance and high point sampling rates. On the other hand, conoscopic holography owns some exclusive advantages: no occlusion problems, vision angles up to 85° and a higher robustness against variations in surface characteristics. The work presented here is part of a project that aims to evaluate conoscopic holography performance when used as an on-machine measurement system. Here, the scope is the integration of a conoscopic holography sensor onto a coordinates measuring machine. Special attention has been paid to calibration procedure, in order to achieve measurements with similar accuracy as those obtained with more common techniques, like laser triangulation sensors.