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Devices and methods of reading monochromatic patterns

  • US 8,682,066 B2
  • Filed: 03/10/2011
  • Issued: 03/25/2014
  • Est. Priority Date: 03/11/2010
  • Status: Active Grant
First Claim
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1. A method of extracting data from an identifiable monochromatic pattern, said method comprising:

  • using a optical assembly having a mask with a at least concentric ring for separating a polychromatic optical signal, received from an object having identifiable monochromatic pattern, into a plurality of wavelength components;

    using an image sensor having a plurality of color channels for separately capturing each of said plurality of wavelength components in another color channel of said plurality of color channels;

    reconstructing a plurality of images each from a different color channel of said plurality of color channels that includes a different wavelength component of said plurality of wavelength components;

    detecting said identifiable monochromatic pattern in at least one of said plurality of images; and

    extracting data associated with or encoded by said detected identifiable monochromatic pattern;

    wherein each of said plurality of images has a different depth of field;

    wherein said mask and said image sensor are aligned along a common axis.

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