Importance

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Abstract

A scanner for reading indicia having portions of differing light reflectivity has means for directing a light beam from the scanner towards the indicia and collecting reflected light returning from the indicia. The scanner includes a scanning arrangement with a scanner component, such as a mirror. First and second vibratory means support the scanner component for angular oscillatory movement to scan the light beam in first and second orthogonal scan directions. The scanning arrangement includes read-start means for moving the scanner component to simultaneously scan the light beam in the first and second scan directions. Control means, operatively connected to the read-start means, are provided for imparting differing signals to the read-start means to (1) alternatively drive fast and slow vibrations of the first and second vibratory means to vary the scanning of the light beam in the first scan direction and (2) to drive vibration of only the second vibratory means to cause the scanning of the light beam in the second scan direction. The scanning of the light beam in the first and second scan directions generates a scan pattern over the indicia.

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First Claim