METHOD OF CONTROLLING DEFLECTION AMPLITUDE AND OFFSET OF RESONANT SCANNING MIRROR USING PHOTO DETECTOR TIMING

PURPOSE: Provided are a system and a method for controlling the deflection amplitude and offset of a laser beam that is deflected off of a vibrating mirror galvanometer, given only beam deflection timing information. CONSTITUTION: Two photo detectors(10,12) are formed near both ends of the deflectio...

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Bibliographische Detailangaben
Hauptverfasser:	HAGEN MARK D, TURNER ARTHUR M, NOXON JAMES E
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	CORRECTION OF TYPOGRAPHICAL ERRORS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME LINING MACHINES OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PERFORMING OPERATIONS PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION PRINTING SELECTIVE PRINTING MECHANISMS STAMPS TRANSPORTING TYPEWRITERS
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Beschreibung
Zusammenfassung:	PURPOSE: Provided are a system and a method for controlling the deflection amplitude and offset of a laser beam that is deflected off of a vibrating mirror galvanometer, given only beam deflection timing information. CONSTITUTION: Two photo detectors(10,12) are formed near both ends of the deflection range associated with a resonant scanning mirror(14) that is deflecting a laser beam(16). A method of controlling a resonant scanning mirror comprises the steps of: measuring deflection timing associated with a laser beam deflected off the resonant scanning mirror in response to movement of the resonant scanning mirror; and controlling the deflection amplitude and offset of the laser beam in response to deflection timing measurements.