The present invention generally provides an apparatus and a method for inspecting
a substrate in a processing system. In one embodiment, a substrate process inspection
system comprises a plurality of optical inspection systems each configured to perform
an optical inspection process at a first degree of optical resolution and an inspection
platform configured to perform an optical inspection process at a second degree
of optical resolution. The plurality of optical inspection systems each comprises
a transmitter unit and a receiver unit. The substrate process inspection system
further comprises a controller system connected to the plurality of optical inspection
systems and the inspection platform. The controller system is configured to (i)
process optical signal information indicative of a topographical condition on a
substrate inspected by at least one of the plurality of optical inspection systems
and (ii) in response to the topographical condition, cause execution of one of
a plurality of subsequent substrate handling steps. In one embodiment, a first
substrate handling step comprises transferring the substrate to the inspection
platform for further optical inspection.