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Smart Optics
Norman Axelrod has an innovative optical signal called Smart Optics. SMART OPTICSSM modifies the optical signal before the light reaches an electronic camera or photodetector, before signal processing and before rejection decisions. It exploits optical variations arising from changes in materials, structure and processing to enhance signal-to-noise or optical contrast. It eliminates background images & produces signals from critical features only. This improves reliability and simplifies software and hardware.
Optical techniques can enhance a signal and obscure background noise.
A defect runs from top to bottom in a semiconductor wafer,
but it is much clearer with better optics
