发明名称 Two and a half dimension inspection system
摘要 An inspection system for detecting surface defects on an object is disclosed, which includes a light source operable to emit a broad spectrum visible light to illuminate the object and a video source operable to receive an image from light reflected from the object surface at a predetermined direction. The system further includes an image processor operable to compare the intensity of the reflected light received by the video source with a range of predetermined intensity values so as to detect defects on the object surface. The inspection system is particularly suited for use in semiconductor manufacturing.
申请公布号 US6046803(A) 申请公布日期 2000.04.04
申请号 US19970995111 申请日期 1997.12.19
申请人 HEWLETT-PACKARD COMPANY 发明人 TOH, PENG SENG
分类号 G01N21/956;G01R31/311;(IPC1-7):G01N21/88 主分类号 G01N21/956
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