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INDICIA READING TERMINAL HAVING MULTIPLE SETTING IMAGING LENS

  • US 20090072038A1
  • Filed: 06/03/2008
  • Published: 03/19/2009
  • Est. Priority Date: 06/04/2007
  • Status: Active Grant
First Claim
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1. A bar code reading terminal comprising:

  • an image sensor having a plurality of pixels;

    a multiple setting imaging lens assembly having a plurality of lens elements, the multiple setting imaging lens assembly having a plurality of lens settings;

    a hand held housing, wherein said image sensor is disposed within said hand held housing;

    wherein said lens settings of said imaging lens assembly includes at least first, second, and third lens settings;

    wherein said terminal when said lens setting is at said first lens setting has a first best focus distance and a first focal length;

    wherein said terminal when said lens setting is at said second lens setting has a second best focus distance different from said first best focus distance and a focal length unchanged relative to said first focal length;

    wherein said terminal when said lens setting is at said third lens setting has a third best focus distance different from either of said first or second best focus distance and a focal length different from said first focal length; and

    wherein said terminal is adapted so that when a trigger signal is active, said terminal automatically cycles a lens setting of said multiple setting imaging lens assembly between said first, second, and third lens settings;

    wherein said terminal is further adapted so that when a trigger signal is active, said terminal captures a certain subsequent and a further subsequent frame of image data, and subjects each of the certain, subsequent and further subsequent frames of image data to a decode attempt, the certain frame having image data representing light incident on pixels of said image sensor when said imaging lens assembly is at a first lens setting, the subsequent frame having image data representing light incident on pixels of said image sensor when said imaging lens assembly is at said second lens setting, the further subsequent frame having image data representing light incident on pixels of said image sensor when said imaging lens assembly is at said third lens setting.

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