Invention Grant
- Patent Title: Method for identifying materials, impurities and related defects with diffuse dispersion transparent objects
- Patent Title (中): 用扩散色散透明物质识别材料，杂质和相关缺陷的方法
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Application No.: US09508137Application Date: 2000-03-07
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Publication No.: US06239870B1Publication Date: 2001-05-29
- Inventor: Bernhard Heuft
- Applicant: Bernhard Heuft
- Priority: DE19741384 19970919
- Main IPC: G01N2100
- IPC: G01N2100
Abstract:
Diffusely scattering defects are to be detected in items made from transparent material, e.g. drinks bottles. To this end, the items (10) are inspected using a light source (12) and a camera (16), a contrast pattern (14) being arranged between the light source (12) and the item to be inspected. Diffusely scattering defects are detected by a decrease in the contrast of the contrast pattern (14) reproduced through the item.
Information query
