Measuring sub-wavelength displacements

Image analysis – Image compression or coding – Transform coding

Reexamination Certificate

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Details

C427S248100, C428S328000

Reexamination Certificate

active

10931647

ABSTRACT:
Measurement systems and methods extend the use of optical navigation to measure displacements smaller than a wavelength of the light used to capture images of an object measured. Nanometer-scale movements can thus be measured, for example, in equipment used for manufacture of integrated circuits or nanometer scale devices.

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patent: WO 02/097535 (2002-12-01), None

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