Patent ID: 6639675
Filing Date: 2003-10-28
Classification: G01N

Abstract:
A method for aligning the first axis of a first mirror of a sensor comprising the steps of:a) determining when said first mirror is in a first location which is a first predetermined number of steps in a first direction from a starting point for said first mirror the average peak amplitude of a signal received at a receiver connected to said first mirror; b) moving said first mirror in a second direction which is opposite to said first direction in first increments each of a second predetermined number of steps and determining the average peak amplitude of said signal received at said receiving section at each of said first increments; c) stopping movement of said first mirror in said second direction when said first mirror has moved a predetermined number of said first increments beyond said starting point; d) determining said first increment where said average peak amplitude of said received signal was the highest and moving said first mirror to said determined first increment; e) moving said first mirror said second predetermined number of steps in said first direction to a second location and determining the average peak amplitude of said signal received at said receiving section at said second location; f) moving said first mirror in said second direction in second increments each of a third predetermined number of steps and determining the average peak amplitude of said signal received at said receiving section at each of said second increments; g) stopping movement of said first mirror in said second direction when said first mirror has moved beyond said determined first increment a predetermined number of said second increments; and h) determining said second increment where said average peak amplitude of said received signal was the highest and moving said first mirror to said determined second increment.