发明名称 |
A METHOD FOR CALIBRATING EQUIPMENT FOR DETECTING IMPURITIES IN TRANSPARENT MATERIAL |
摘要 |
Equipment for detecting impurities in transparent material comprising a light source to illuminate the material, a camera to detect light transmitted through the material and signal-processing apparatus for processing and analysing signals from the camera representing the light transmission through the material. This type of equipment is calibrated by dark areas being displayed on a film of transparent material (22, 24, 26) and the actual sizes (30) of the areas being determined. The sizes of the dark areas are then determined using the detecting equipment (34) and in this way determined sizes are compared with actual sizes (36) for calibration of the detecting equipment (38).
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申请公布号 |
WO0062044(A1) |
申请公布日期 |
2000.10.19 |
申请号 |
WO2000SE00683 |
申请日期 |
2000.04.10 |
申请人 |
SEMYRE PHOTONIC SYSTEMS AB;AASEMYR, GOERAN |
发明人 |
AASEMYR, GOERAN |
分类号 |
G01N21/93;(IPC1-7):G01N21/88 |
主分类号 |
G01N21/93 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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