Randomized circular grids for low-scatter EM shielding of a sensor window
First Claim
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1. A metallization coating for a sensor window, the coating comprising:
- a plurality of randomly distributed elliptical shapes arranged in a randomized elliptical grid pattern such that the elliptical shapes are physically connected to each-other as a result of direct shape-to-shape contact or overlap;
where the elliptical shapes are hollow to allow for transmission of electro-optical radiation through the sensor window; and
where pattern density, which is a ratio of shapes per unit of sensor window area, increases toward an edge of the sensor window.
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Abstract
A randomized elliptical grid disposed on a sensor window for electro-magnetic and/or radio-frequency shielding of sensors, and a method of applying same. Grids may be made of electrically conductive or resistive material and may include elliptical or circular shapes. The shapes are in physical contact with each-other and preferably do not contain straight lines to reduce detection artifacts caused by the coating. Grid element shape, size, orientation, and grid pattern density may be randomized or varied across a sensor window.
11 Citations
17 Claims
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1. A metallization coating for a sensor window, the coating comprising:
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a plurality of randomly distributed elliptical shapes arranged in a randomized elliptical grid pattern such that the elliptical shapes are physically connected to each-other as a result of direct shape-to-shape contact or overlap; where the elliptical shapes are hollow to allow for transmission of electro-optical radiation through the sensor window; and where pattern density, which is a ratio of shapes per unit of sensor window area, increases toward an edge of the sensor window. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A metallization coating for a sensor window, the coating comprising:
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a metallization layer including a plurality of randomly distributed elliptical shapes arranged in a randomized elliptical grid pattern such that the elliptical shapes are physically connected to each-other as a result of direct shape-to-shape contact or overlap; a light-absorbing surface binder layer; and a primer layer, disposed on top of the binder layer, where the primer layer improves adhesion between the metallization layer and the binder layer; where the surface binder layer is disposed on the sensor window and the metallization layer is disposed on top of the primer layer; and where the elliptical shapes are hollow to allow for transmission of electro-optical radiation through the sensor window.
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Specification