Electromagnetically shielded window, sensor system using the window, and method of manufacture
AssigneeExotic Electrooptics
InventorDonald S. Fisher
Life of this patent
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Abstract
A window is transparent to infrared and/or visible radiation, and is shielded against electromagnetic radiation. The window includes a substrate made of a material transparent to the selected wavelength band of radiation, and a multilayer grid pattern overlying the substrate. The grid pattern comprises a first layer of an electrically conductive material adjacent to the substrate, and a second layer of a magnetically permeable material overlying the first layer. Preferably, there is a third layer of an electrically conductive material overlying the second layer.
Claims41
A window, comprising:
- a substrate made of a material transparent to a selected wavelength band of radiation;
- and
- a multilayer grid pattern formed of an array of stripes overlying and contacting the substrate, the stripes comprising:
- a first layer of an electrically conductive material, and
- a second layer of a second-layer material contacting the first layer, the second-layer material having a relative magnetic permeability equal to or exceeding about 1000.
A window, comprising:
- a substrate made of a material transparent to a selected wavelength band of radiation, the selected wavelength band being selected from the group consisting of the visible and the infrared;
- a multilayer grid pattern overlying the substrate, the grid pattern comprising:
- a first layer of an electrically conductive material overlying and contacting the substrate,
- a second layer of a second-layer material overlying and contacting the first layer, the second-layer material having a relative magnetic permeability equal to or exceeding about 1000, and
- a third layer of an electrically conductive material overlying and contacting the second layer;
- and
- an electrical ground conductor in electrical communication with the first layer.
A sensor system operable to view a scene, comprising
- a sensor;
- and
- a window between the sensor and the scene, the window comprising
- a substrate made of a material transparent to a selected wavelength band of radiation,
- a multilayer grid pattern formed of an array of stripes overlying and contacting the substrate, each of the stripes comprising:
- a first layer of an electrically conductive material, and
- a second layer of a second-layer material contacting the first layer, the second-layer material having a relative magnetic permeability equal to or exceeding about 1000.
A window, comprising:
- a substrate made of a material transparent to a selected wavelength band of radiation;
- and
- a multilayer grid pattern formed of an array of stripes overlying and contacting the substrate, the stripes comprising:
- a first layer of an electrically conductive material, and
- a second layer of a second-layer material contacting the first layer, the second-layer material being a ferromagnetic alloy of a metal selected from the group consisting of iron, nickel, and cobalt.
Dependencies are inferred from the claim text.