Method and electro-optical system for inspecting bodies such as tiles
Abstract
Abstract A METHOD OF, AND SYSTEM FOR, AUTOMATICALLY INSPECTING REGULAR BODIES, SUCH AS CERAMIC GLAZED TILES, FOR VISUAL DEFECTS IN ITS BOUNDARY AND UPPER SURFACE. EACH BODY IS MOVED THROUGH STATIONS HAVING ELECTROOPTICAL DEVICES FOR DETERMINING VARIOUS CLASSES OF DEFECTS IN THE BODY. THE DEVICES WHICH ARE USED TO INSPECT THE UPPER SURFACE OF THE BODY SCAN THE SURFACE AND CONVERT LIGHT DIFFUSELY OR SPECULARLY REFLECTED THEREFROM INTO A WAVEFORM COMPOSED OF A SERIES OF PEDESTALS WHICH ARE ANALYSED FOR DEFECT-INDICATIVE INFORMATION. THE DEVICE USED TO INSPECT THE BOUNDARY OF THE BODY ACTS TO DETERMINE WHETHER THERE ARE ANY IRREGULARITIES, SUCH AS IDENTATIONS OR PROJECTIONS, IN THE BOUNDARY. VARIOUS TECHNIQUES ARE PROVIDED TO IMPROVE THE VALIDITY OF THE DEFECT DETECTING OPERATION.
Inventors
- 👤 Robert N West
- 👤 Richard A Brook
- 👤 Richard G Shaw
- 👤 Daniel R Lobb
- 👤 Anthony J Allnutt
Bibliographic Details
Claims Analysis
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