Optics: measuring and testing – Inspection of flaws or impurities
Reexamination Certificate
2004-09-03
2010-06-15
Chowdhury, Tarifur R. (Department: 2886)
Optics: measuring and testing
Inspection of flaws or impurities
Reexamination Certificate
active
07738089
ABSTRACT:
Methods and systems for inspection of a specimen using different parameters are provided. One computer-implemented method includes determining optimal parameters for inspection based on selected defects. This method also includes setting parameters of an inspection system at the optimal parameters prior to inspection. Another method for inspecting a specimen includes illuminating the specimen with light having a wavelength below about 350 nm and with light having a wavelength above about 350 nm. The method also includes processing signals representative of light collected from the specimen to detect defects or process variations on the specimen. One system configured to inspect a specimen includes a first optical subsystem coupled to a broadband light source and a second optical subsystem coupled to a laser. The system also includes a third optical subsystem configured to couple light from the first and second optical subsystems to an objective, which focuses the light onto the specimen.
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Ceglio Nat
Fu Tao-Yi
Hwang Shiow-Hwei
Lange Steve R.
Marella Paul Frank
Akanbi Isiaka O
Chowdhury Tarifur R.
KLA-Tencor Technologies Corp.
Mewherter Ann Marie
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