| 摘要 |
<p>Electro-optical sensing of form type and other defects on surfaces such as sheet metal or plastic panels. Method and apparatus are disclosed for detection and quantification of defects such as dents, creases, low spots, flat spots, etc. which are a result of the manufacturing, material handling and assembly process. In one embodiment (Fig. 3) the sensing apparatus includes a laser (201) for illuminating an area (220) of the surface to be inspected. A retroreflective member (203) is positioned relative to the surface so that light reflected from the surface area (220) is retroreflected back to the surface to be re-reflected therefrom. A lens (210) images the returning light via a beam splitter (213) onto a detector (215).</p> |
