Conductive frequency selective surface utilizing arc and line elements
First Claim
1. An article having a communication window comprising:
- a substrate having a major surface, the major surface having a portion to block out at least one predetermined wavelength of an electromagnetic spectrum and a portion of the major surface outlined by an imaginary boundary defined as an aperture, the aperture having a frequency selective surface pattern defined by an area that passes the at least one predetermined wavelength of the electromagnetic spectrum, defined as a passing area, and an area that blocks out the at least one predetermined wavelength of the electromagnetic spectrum, defined as a blocking area, wherein the frequency selective surface pattern comprises;
a plurality of spaced columns, each column defined by a first boundary line spaced from a second boundary line and having a plurality of blocking areas between the first and second boundary lines of the column, the blocking areas spaced from one another by a passing area, and the column having a first at least one passing area between the blocking areas and the first boundary, and a second at least one passing area between the blocking areas and the second boundary, and each of the columns separated by a blocking area.
5 Assignments
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Accused Products
Abstract
An electrically conductive coating of an automotive heatable windshield has a communication window having an enhanced frequency selective surface having arranged passing areas (uncoated areas) and blocking areas (coated areas) to pass and block, respectively, predetermined wavelengths of the electromagnetic spectrum. In one nonlimiting embodiment, the frequency selective surface includes a plurality columns spaced from one another by a continuous elongated blocking area. Each of the columns includes passing areas with each of the passing areas have a perimeter with a blocking area in the perimeter spaced from the perimeter. The perimeters of the passing areas contact one another with the blocking area of adjacent passing areas spaced from one another. The elongated blocking area between the break lines and columns extend to the perimeter of the communication window. In this manner current passing through the coating, passes through the communication window to eliminate hot and cold spots around and within the perimeter of the communication window.
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Citations
22 Claims
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1. An article having a communication window comprising:
a substrate having a major surface, the major surface having a portion to block out at least one predetermined wavelength of an electromagnetic spectrum and a portion of the major surface outlined by an imaginary boundary defined as an aperture, the aperture having a frequency selective surface pattern defined by an area that passes the at least one predetermined wavelength of the electromagnetic spectrum, defined as a passing area, and an area that blocks out the at least one predetermined wavelength of the electromagnetic spectrum, defined as a blocking area, wherein the frequency selective surface pattern comprises; a plurality of spaced columns, each column defined by a first boundary line spaced from a second boundary line and having a plurality of blocking areas between the first and second boundary lines of the column, the blocking areas spaced from one another by a passing area, and the column having a first at least one passing area between the blocking areas and the first boundary, and a second at least one passing area between the blocking areas and the second boundary, and each of the columns separated by a blocking area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An article having a communication window comprising:
a substrate having a major surface, the major surface having a portion to block out at least one predetermined wavelength of an electromagnetic spectrum and a portion of the major surface outlined by an imaginary boundary defined as an aperture, the aperture having a frequency selective surface pattern defined by an area that passes the at least one predetermined wavelength of the electromagnetic spectrum, defined as a passing area, and an area that blocks out the at least one predetermined wavelength of the electromagnetic spectrum, defined as a blocking area, wherein the frequency selective surface pattern comprises; a plurality of columns, each column having a plurality of passing areas separated by blocking areas, each passing area having a perimeter with a blocking area within the perimeter, and each of the columns are separated by a blocking area, and at least one column includes at least two subcolumns, each subcolumn having a plurality of passing areas separated by blocking areas, with the blocking areas and passing areas of adjacent subcolumns in contact with one another and the blocking areas within the perimeter of the passing areas spaced from one another.
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21. An article having a communication window, wherein the article is an automotive windshield comprising:
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a substrate having a major surface, the major surface having a portion to block out at least one predetermined wavelength of an electromagnetic spectrum and a portion of the major surface outlined by an imaginary boundary defined as an aperture, the aperture having a frequency selective surface pattern defined by an area that passes the at least one predetermined wavelength of the electromagnetic spectrum, defined as a passing area, and an area that blocks out the at least one predetermined wavelength of the electromagnetic spectrum, defined as a blocking area; a coating comprising a silver film on the major surface of the substrate, the coating selected from a solar control coating, an electrically heatable coating, and combinations thereof with the passing areas extending at least through the silver film of the coating, and the frequency selective surface pattern comprising; a plurality of columns, each column having a plurality of passing areas separated by blocking areas, each passing area having a perimeter with a blocking area within the perimeter, and each of the columns are separated by a blocking area. - View Dependent Claims (22)
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Specification