System for inspecting can lids for through the lid flaws,申请号US19760677471-传众专利搜索

System for inspecting can lids for through the lid flaws

申请公布号：US4086497(A)

申请号：US19760677471

申请日期：1976.04.15

申请公布日期：1978.04.25

申请人：

COLUMBIA RESEARCH CORPORATION

发明人：MURRAY, RUSSELL

分类号：G01M3/38;G01N21/954;(IPC1-7):G01N21/32

主分类号：G01M3/38

摘要：A method for detecting light passing flaws in discrete elements, which are normally opaque to visible light, characterized by a sampling technique to enhance the signal to noise ratio of the ultimate signal. The ultimate signal is a composite signal generated by the addition of a number of discrete sample signals, each signal representing both a repeating reaction of a photosensitive means to light passing through flaws in the normally opaque element, and random ambient signal noise.