Inspection apparatus, inspection method, and manufacturing...

Details Inspection apparatus, inspection method, and manufacturing... Inspection apparatus, inspection method, and manufacturing...

2008-02-04

2009-06-16

Nguyen, Sang (Department: 2886)

Optics: measuring and testing

Inspection of flaws or impurities

Surface condition

C356S237100, C356S237500, C356S394000

Reexamination Certificate

active

07548309

ABSTRACT:
A defect inspection apparatus according to an aspect of the present invention includes a laser source generating light beam, an objective lens focusing the light beam emitted from the laser source to form a light spot on a surface of a sample W, a prism dividing the light beam reflected from the sample into two light beams, two light receiving elements receiving the light beams divided by the prism to output output signals based on the beam amount of the received beams, and a real defect determination part determining a candidate detect as a real defect when output signals from the two light receiving elements are detected substantially at the same time.

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patent: 2006-125967 (2006-05-01), None

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