Wireless substrate-like sensor

Details Wireless substrate-like sensor Wireless substrate-like sensor

2006-03-15

2008-11-25

Toatley, Jr., Gregory J. (Department: 2877)

Optics: measuring and testing

Position or displacement

Position transverse to viewing axis

C356S614000, C348S094000, C348S095000, C382S153000, C382S154000, C700S056000, C700S259000, C702S150000, C702S152000, C702S153000

Reexamination Certificate

active

07456977

ABSTRACT:
A wireless substrate-like sensor is provided to facilitate alignment and calibration of semiconductor processing systems. The wireless substrate-like sensor includes an optical image acquisition system that acquires one or more images of targets placed within the semiconductor processing system. Analysis of images of the targets obtained by the wireless substrate-like sensor provides position and/or orientation information in at least three degrees of freedom. An additional target is affixed to a known location within the semiconductor processing system such that imaging the reference position with the wireless substrate-like sensor allows the measurement and compensation for pick-up errors.

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