SYSTEM AND METHOD FOR INSPECTING A WORKPIECE SURFACE BY ANALYZING SCATTERED IN A FRONT QUARTERSPHERE REGION ABOVE THE WORKPIECE

    公开(公告)号:WO2006066139A3

    公开(公告)日:2006-06-22

    申请号:PCT/US2005/045786

    申请日:2005-12-17

    Abstract: 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.

    SYSTEM AND METHOD FOR INSPECTING A WORKPIECE SURFACE BY ANALYZING SCATTERED LIGHT IN A BACK QUARTERSPHERE REGION ABOVE THE WORKPIECE

    公开(公告)号:WO2006066136A3

    公开(公告)日:2006-06-22

    申请号:PCT/US2005/045783

    申请日:2005-12-17

    Abstract: A 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 back collectors disposed in the back quartersphere, outside the incident plane, for collecting light scattered from the surface of the workpiece. The back collectors are disposed at a relative minimum in the portion of scattered light attributable to haze relative to the portion of scattered light attributable to defect scatter portion, or, alternatively, at a relative minimum in the Rayleigh scatter.

Patent Agency Ranking