Planar laser illumination and imaging (PLIIM) systems with integrated despeckling mechanisms provided therein
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United States of America Patent
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May 5, 2009
Grant Date -
Jan 18, 2007
app pub date -
Jun 20, 2006
filing date -
Mar 24, 1998
priority date (Note) -
Expired
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Abstract
A hand-supportable planar laser illumination and imaging (PLIIM) based device having hand-supportable housing with a light transmission aperture. A linear image formation and detection (IFD) module is mounted within the housing, and has a linear array of image detection elements and also image formation optics with a field of view (FOV). When an object is presented within the FOV, the FOV focuses a linear image of the object onto the linear array. At least one planar laser illumination module (PLIM) is mounted on the support platform, with the linear IFD module, and produces a planar laser illumination beam (PLIB) spatially aligned with respect to the FOV and arranged in a coplanar relationship with at least a portion of the FOV. A laser beam despeckling mechanism is integrated in the device, for reducing speckle-pattern noise observed the linear digital images formed and detected at the linear array of image detection elements.
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