Apparatus and methods for scanning conoscopic holography measurements are disclosed. In one embodiment, a system includes a conoscopic holography sensor, a beam directing assembly, and a control assembly. The beam directing assembly is adapted to adjustably direct a laser beam from the sensor toward...http://www.google.com.au/patents/US7321421?utm_source=gb-gplus-sharePatent US7321421 - Apparatus and methods for scanning conoscopic holography measurements
