High-Speed Laser Scanner Maps a Surface in Three DimensionsA scanning optoelectronic instrument generates the digital equivalent of a threedimensional (X,Y,Z) map of a surface that spans an area with resolution on the order of 0.005 in. ( 0.125mm). Originally intended for characterizing surface flaws (e.g., pits) on space-shuttle thermal-insulation tiles, the instrument could just as well be used for similar purposes in other settings in which there are requirements to inspect the surfaces of many objects. While many commercial instruments can perform this surface-inspection function, the present instrument offers a unique combination of capabilities not available in commercial instruments. This instrument utilizes a laser triangulation method that has been described previously in NASA Tech Briefs in connection with simpler related instruments used for different purposes. The instrument includes a sensor head comprising a monochrome electronic camera and two lasers. The camera is a high-resolution
Document ID
20110014147
Acquisition Source
Ames Research Center
Document Type
Other - NASA Tech Brief
Authors
Lavelle, Joseph (NASA Ames Research Center Moffett Field, CA, United States)
Schuet, Stefan (NASA Ames Research Center Moffett Field, CA, United States)