Mahr has introduced a new high-precision measuring station to measure and evaluate optical components, including freeform, aspheric, and spherical lenses. Developed to provide quick 2-D and 3-D testing to support the entire lens production process, the MarForm MFU 200 Aspheric 3D is CNC operated with nine motorized axes, including four measuring axes, and delivers the highest measuring speed available and ultra-precise path control. The system includes both an interferometric point sensor for fully non-contact measurements, and a tactile probing system for surfaces in early stages of production that do not allow the interferometer to interact well with the rough surface.
The high precision MarForm MFU 200 Aspheric 3D ensures very low measurement uncertainties while quickly measuring the complete topography of optical components. For the complete 3-D measurement of a lens, one or more linear profiles are measured over the zenith of the lens, then several concentric circular profiles at different radii are recorded by turning the C-axis. All of these measuring points are combined to create the 3-D topography. Interrupted surfaces can also be measured easily with the MFU 200 since the probe can automatically move over the interruption. The system includes built-in vibration isolation and a full machine enclosure to ensure minimal effects from the external environment.