Automatic inspecting method for surface spot of plate type body
专利汇可以提供Automatic inspecting method for surface spot of plate type body专利检索，专利查询，专利分析的服务。并且PURPOSE: To perform detection distinctively from the signal due to dust by sweeping scanning lines of a photodetector at right angles to a conveyance direction and putting signals of the respective scanning lines together.
CONSTITUTION: A linear CCD camera 3 is provided above a conveyance path at 45° to the vertical direction of the surface of a tile 1. A high-frequency fluorescent lamp 2, on the other hand, is provided slantingly by 45° from the vertical direction of the surface of the tile 1 to the conveyance direction X. The scanning line sweeping direction of this camera 3 is perpendicular to the conveyance direction X and the surface of the tile 1 is detected successively while sliced breadthwise. If there is a scratch (f) in the surface of the tile 1, the scratch signal Sf
n of the output signal S
n of the camera 3 corresponding to the scratch (f) continues on a virtual line E. Dust (d) is present dispersedly on the surface of the tile 1, so a dust signal Sd
n also becomes random and never continues on the virtual line E. For the purpose, signals S
n are put together to detect the scratch (f) distinctively from the dust (d).
COPYRIGHT: (C)1988,JPO&Japio，下面是Automatic inspecting method for surface spot of plate type body专利的具体信息内容。
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