Optical scanner apparatus

The invention provides for optical scanner apparatus (21) having a dynamic laser diode aperture (37) for collimating light from a laser diode (34) so as to increase the power of the beam to a predetermined maximum. The optical scanner (21) includes a motor (24) for driving a hollow cylindrical shaft...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	WIKE, CHARLES KENNETH, JR, AMES, STEPHEN JOHN
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CALCULATING COMPUTING COUNTING ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY HANDLING RECORD CARRIERS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION PRESENTATION OF DATA RECOGNITION OF DATA RECORD CARRIERS
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Beschreibung
Zusammenfassung:	The invention provides for optical scanner apparatus (21) having a dynamic laser diode aperture (37) for collimating light from a laser diode (34) so as to increase the power of the beam to a predetermined maximum. The optical scanner (21) includes a motor (24) for driving a hollow cylindrical shaft (28) through which the output laser light passes. A lens member (35) focuses the light, and the aperture (37), located within a cap member (31) within an end of the motor shaft (28) closest to the laser diode (34), collimates the focused light. The aperture (37) approximates to the cross-sectional shape of the unfocused light pattern from the laser diode (34) and in a preferred embodiment, the aperture (37) is generally elliptical in shape.