Patent ID: 7321421
Filing Date: 2008-01-22
Classification: G01B,G03H

Abstract:
1. A system for performing a measurement of a physical characteristic of a workpiece, comprising: a conoscopic holography sensor configured to emit a laser beam; a beam directing assembly configured to adjustably direct the laser beam toward the workpiece, and to adjustably direct a reflected light from the workpiece into the conoscopic holography sensor, wherein the conoscopic holography sensor includes a crystal configured to transmit the reflected light to form a fringe pattern at least partially indicative of the physical characteristic, wherein the beam directing assembly includes: a control assembly operatively coupled to the conoscopic holography sensor and to the beam directing assembly, the control assembly being configured to send a first control signal to the conoscopic holography sensor to initiate the emission of the laser beam, and a second control signal to the beam directing assembly to controllably adjust a direction of the laser beam.