发明名称 System and method for inspecting a workpiece surface by analyzing scattered light in a front quartersphere region above the workpiece
摘要 A surface inspection system, as well as related components and methods, are provided. The surface inspection system includes a beam source subsystem, a beam scanning subsystem, a workpiece movement subsystem, an optical collection and detection subsystem, and a processing subsystem. The optical collection and detection system features, in the front quartersphere, a light channel assembly for collecting light reflected from the surface of the workpiece, and a front collector and wing collectors for collecting light scattered from the surface, to greatly improve the measurement capabilities of the system. The light channel assembly has a switchable edge exclusion mask and a reflected light detection system for improved detection of the reflected light.
申请公布号 US7605913(B2) 申请公布日期 2009.10.20
申请号 US20050311919 申请日期 2005.12.17
申请人 KLA-TENCOR CORPORATION 发明人 BILLS RICHARD EARL;JUDELL NEIL;FREISCHLAD KLAUS REINHARD;MCNIVEN JAMES PETER
分类号 G01N21/00 主分类号 G01N21/00
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