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Emitting and focusing apparatus, methods, and systems

  • US 20090296236A1
  • Filed: 06/18/2008
  • Published: 12/03/2009
  • Est. Priority Date: 05/30/2008
  • Status: Active Grant
First Claim
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1. An electromagnetic apparatus, comprising:

  • a focusing structure oriented to transmit output electromagnetic energy and having a nominal depth of field for input electromagnetic energy; and

    a field-adjusting structure disposed to transmit the input electromagnetic energy and having electromagnetic parameters that provide an extended depth of field for the input electromagnetic energy greater than the nominal depth of field, the electromagnetic parameters including;

    axial electromagnetic parameters; and

    transverse electromagnetic parameters that inversely correspond to the axial electromagnetic parameters.

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