| 摘要 |
<p>A surface inspection apparatus for inspecting a complex shaped surface, such as the paint surface of a motor car, comprising laser means (31) providing a beam (26) of radiation, scanning means (39) for scanning the beam across the surface, retroreflective material being provided to reflect radiation reflected from the surface back along the incident beam path, the apparatus including the retroreflective material being mounted as a unit to be moved over the surface of the motor car by means of a robot (13). Analysis of the light signal will indicate defects such as scratches, paint inclusions, orange peel, dry spray, dents and gloss defects and can distinguish the defects from features which should be present on the surface such as door cracks.</p> |
