Focusing and sensing apparatus, methods, and systems
First Claim
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1. A method, comprising:
- identifying a nominal focusing region for a focusing structure, the nominal focusing region having a nominal axial dimension; and
determining electromagnetic parameters for a spatial region containing the nominal focusing region, the electromagnetic parameters providing an actual focusing region having an actual axial dimension greater than the nominal axial dimension;
where the electromagnetic parameters include;
axial electromagnetic parameters; and
transverse electromagnetic parameters that inversely correspond to the axial electromagnetic parameters.
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Abstract
Apparatus, methods, and systems provide focusing, focus-adjusting, and sensing. In some approaches the focus-adjusting includes providing an extended depth of focus greater than a nominal depth of focus. In some approaches the focus-adjusting includes focus-adjusting with a transformation medium, where the transformation medium may include an artificially-structured material such as a metamaterial.
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50 Claims
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1. A method, comprising:
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identifying a nominal focusing region for a focusing structure, the nominal focusing region having a nominal axial dimension; and determining electromagnetic parameters for a spatial region containing the nominal focusing region, the electromagnetic parameters providing an actual focusing region having an actual axial dimension greater than the nominal axial dimension;
where the electromagnetic parameters include;axial electromagnetic parameters; and transverse electromagnetic parameters that inversely correspond to the axial electromagnetic parameters. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
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Specification