Patent ID: 8120766

Claim:
An inspection apparatus for detecting defects and haze on a surface of a sample, the apparatus comprising: illumination optics for emitting light to illuminate an inspection region on the surface of the sample from an oblique direction relative to the inspection region; first detection optics provided at one or a plurality of forward positions relative to the direction of the illumination by the illumination optics, the detection optics being adapted to detect the light scattered from the inspection region, in a forward direction relative to the direction of the illumination by the illumination optics; second detection optics provided at one or a plurality of sideward or backward positions relative to the direction of the illumination by the illumination optics, the detection optics being adapted to detect the light scattered from the inspection region, in sideward or backward directions relative to the direction of the illumination by the illumination optics; and a signal-processing unit for detecting defects on the surface of the sample on the basis of a signal detected by the first detection optics, the unit further detecting haze on the surface of the sample on the basis of a signal detected by the second detection optics.