... National Laboratories. The fringe reflection or deflectometry systems use phase-shifted fringe patterns on a target, and view a reflection of that target in the mirror, in order to map each camera pixel image of the mirror to a specific location on the target. The process used is well documented [ 16...

.... SOFAST and other deflectometry tools mentioned here provide extensive facet characterization data. It is important to determine how uncertainties in system inputs affect system outputs for each tool in order to understand the confidence intervals for facet...

.... Measuring slope deviations in the parabolic shape of the mirror panels in the accuracy and resolution required for these applications is a challenge as it is not required with the same characteristics in other industries. Photogrammetry and deflectometry are the two optical measurement methods...

... distant observer photogrammetry absorber reflection method deflectometry One of the main influences on the overall performance of a parabolic-trough power plant is the optical quality of the concentrator field, which is determined by the reflectivity of the mirrors, the absorptivity...