Browse Prior Art Database

Modified AC Light Source for Constant Output

IP.com Disclosure Number: IPCOM000046406D
Original Publication Date: 1983-Jul-01
Included in the Prior Art Database: 2005-Feb-07

Publishing Venue

IBM

Related People

Authors:
Burke, AJ [+details]

Abstract

This synchronization circuit effectively modifies an AC light source to provide a constant output to an optical signal. The circuit synchronizes the data sampling rate of an optical processing tool to the AC light. Specifically, the data sampling rate is synchronized with the peak intensity of the AC light source. AC variations of the source are eliminated from the optical information presented to a controlling computer for a tool, such as the automatic aligner of a wafer exposure tool.