Dedicated tool for aspheric and freeform optics metrology The versatile PLu apex is able to measure any optical surface, from aspheric to flat surfaces, machined and freeform optics, molded optics and even the molds themselves. Its innovative design based on Sensofar’s core technology, confocal metrology allows a non-contact and high-precision measurement. Not limited by the shape of the sample, independent of sample reflectivity, and suitable for circular or rectangular shapes.