Deterministic EMI grid layout for controlling optical diffraction
First Claim
Patent Images
1. A method of shielding an object from an electromagnetic signal, comprising:
- forming a metallic coating characterized by a plurality of apertures aligned in a pattern that is defined by a deterministic relation, wherein distances between each of the plurality of apertures and an observation point in an associated image plane are uncorrelated and the pattern is formed as an Archimedes spiral of the plurality of apertures; and
placing the metallic coating between the object and the electromagnetic signal.
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Abstract
An electromagnetic interference shield is disclosed. The electromagnetic interference shield includes an optically transparent substrate and a metallic coating on the optically transparent substrate. The metal coating is characterized by a plurality of apertures aligned in a pattern that is defined by a deterministic relation. Distances between each of the plurality of apertures and an observation point in an associated image plane are uncorrelated.
11 Citations
9 Claims
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1. A method of shielding an object from an electromagnetic signal, comprising:
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forming a metallic coating characterized by a plurality of apertures aligned in a pattern that is defined by a deterministic relation, wherein distances between each of the plurality of apertures and an observation point in an associated image plane are uncorrelated and the pattern is formed as an Archimedes spiral of the plurality of apertures; and placing the metallic coating between the object and the electromagnetic signal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of reducing diffraction effects in an electromagnetic interference shield, comprising:
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forming the electromagnetic interference shield using a metallic coating having a plurality of apertures aligned in a pattern that is defined by a deterministic relation, wherein distances between each of the plurality of apertures and an observation point in an associated image plane are uncorrelated wherein the deterministic relation is an Archimedes spiral. - View Dependent Claims (8, 9)
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Specification