Surface inspection system

Details Surface inspection system Surface inspection system

2006-09-19

2006-09-19

Lauchman, Layla G. (Department: 2877)

Optics: measuring and testing

Inspection of flaws or impurities

Surface condition

C356S237100, C356S237200

Reexamination Certificate

active

07110106

ABSTRACT:
An inspection system includes a stage, a light source, and a light collection subsystem is disclosed. The stage supports an article for inspection, the article having a surface. The light source provides light impinging on and scattering from an illumination area of the surface. The light collection system includes a plurality of collectors arranged generally in a semi-spherical layout such that each collector collects at least a portion of the scattering light at a collection polar angle and a collection azimuthal angle that are unique relative to collection polar angle and collection azimuthal angle of other collectors. The collectors are arranged in three rings of collectors. The inspection system includes a plurality of channels where each collector of the light collection subsystem is associated with a channel. The inspection system includes a processor connected to the channels. The processor is adapted to process information from the channels.

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