METHOD AND SYSTEM FOR CONTROLLING DEFLECTION AMPLITUDE AND OFFSET OF RESONANCE SCANNING MIRROR BY USING TIMING OF PHOTODETECTOR

PROBLEM TO BE SOLVED: To provide a system and a method for controlling the deflection amplitude and offset of a laser beam deflected by a resonance mirror galvanometer to which only beam deflection timing information is provided. SOLUTION: Two photodetectors 10, 12 are arranged in the vicinity of bo...

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Bibliographische Detailangaben
Hauptverfasser:	HAGEN MARK D, TURNER ARTHUR M, NOXON JAMES E
Format:	Patent
Sprache:	eng
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:	PROBLEM TO BE SOLVED: To provide a system and a method for controlling the deflection amplitude and offset of a laser beam deflected by a resonance mirror galvanometer to which only beam deflection timing information is provided. SOLUTION: Two photodetectors 10, 12 are arranged in the vicinity of both the ends of a deflection range of a resonance scanning mirror 14 for deflecting a laser beam 16. Respective photodetectors 10, 12 are located on equal distance from the center 18 of deflection. When a beam is swept from a side part 10 to a side part 12, the photodetectors 10, 12 generate pulses. COPYRIGHT: (C)2004,JPO