Patent ID: 7819320
Filing Date: 2010-10-26
Classification: G01N

Abstract:
1. A method for y-axis beam pointing-error correction in an optical reader-scanner having pointing-error, the method comprising: determining the y-pointing error for each beam arranged in a column along the y-axis; accomplishing N scans across a row of wells of a microplate with a beam along the x-axis, each scan having a separation from any adjacent scan along the y-axis of Δs, and each scanned row having the center of the N scans offset by the y-pointing error (PE eliminating scan lines so that the center of remaining scan lines is ±Δs/4, where scan lines are eliminated by calculating the value of equation (1): where “round” rounds the result in the brackets to the nearest integer, the number of scan lines eliminated is the absolute value of equation (1): according to: