nothing would compare to the rigidity and accuracy of three linear scales and drives. We were resigned to the fact that any improvement in CMMs would be only incremental. We lived this way for decades. Recently, however, optical CMMs began developing and maturing, which could be enough of a paradigm shift to become the revolutionary change the metrology market is looking for.
About the Optical CMM technology
While the technology comes in different “flavors,” most optical CMMs work around a similar principal. Nikon Metrology’s optical CMM (KCMM) begins with three linear CCD cameras. When light from an active infrared LED is detected, the three cameras triangulate its position in space.
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