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Automatic Focus Checking for Optical Inspection System

IP.com Disclosure Number: IPCOM000035919D
Original Publication Date: 1989-Aug-01
Included in the Prior Art Database: 2005-Jan-28

Publishing Venue

IBM

Related People

Authors:
Parker, DT Seigart, W Skinner, M [+details]

Abstract

The mechanical focus position of video cameras in automated optical inspection systems must be maintained to ensure proper defect detection. Optimum focus is the mechanical camera position providing the steepest video rise time.