Multiple glazed insulating unit, especially for an aircraft window, with electromagnetic armour
First Claim
Patent Images
1_13. —
- An insulating multiple glazing unit whose glazed section is provided with at least two superposed panes (2;
3) of mechanically strong transparent substrate, between which there is interposed at least one gap filled with gas, the said panes (2;
3) being mounted at their periphery in a seal (4), by means of which the said glazing unit (1) can be built into a structure designed to enclose a space containing instruments susceptible to being disturbed by an electromagnetic field and which has an electromagnetic shielding function, characterized by the fact that the glazed section is provided with at least one continuous electrically conductive transparent thin layer (5), and in that the seal (4) is made conductive at least in part in order to ensure connection of the said electrically conductive transparent thin layer or layers (5) to the said structure, the conductivities of the said electrically conductive transparent thin layer or layers (5) and of the said seal (4) being chosen to ensure continuity of the electromagnetic shielding of the said structure.
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Abstract
A multiple glazed insulating unit, especially for an aircraft window, with electromagnetic armour. An insulating multiple glazing unit includes a glazed section provided with at least two superposed panes of mechanically-strong transparent substrate, between which is interposed at least one gap filled with gas. The panes are mounted at their periphery in a seal, by which the glazing unit can be built into a structure designed to enclose a space containing instruments susceptible to being disturbed by an electromagnetic field, and which has an electromagnetic shielding function. The glazed section is provided with at least one continuous electrically-conductive transparent thin layer, and the seal is made conductive at least in part to ensure connection of the electrically-conductive transparent thin layer to the structure. Conductivities of the electrically-conductive transparent thin layer and of the seal are chosen to ensure continuity of the electromagnetic shielding of the structure.
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Citations
1313 Claims
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1_13. —
- An insulating multiple glazing unit whose glazed section is provided with at least two superposed panes (2;
3) of mechanically strong transparent substrate, between which there is interposed at least one gap filled with gas, the said panes (2;
3) being mounted at their periphery in a seal (4), by means of which the said glazing unit (1) can be built into a structure designed to enclose a space containing instruments susceptible to being disturbed by an electromagnetic field and which has an electromagnetic shielding function, characterized by the fact that the glazed section is provided with at least one continuous electrically conductive transparent thin layer (5), and in that the seal (4) is made conductive at least in part in order to ensure connection of the said electrically conductive transparent thin layer or layers (5) to the said structure, the conductivities of the said electrically conductive transparent thin layer or layers (5) and of the said seal (4) being chosen to ensure continuity of the electromagnetic shielding of the said structure.
- An insulating multiple glazing unit whose glazed section is provided with at least two superposed panes (2;
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2_13. —
- A glazing unit according to claim 1, characterized by the fact that the panes (2;
3) of mechanically strong, transparent substrate are made of one-piece glass plates or of polymer plates or of laminated glass plates.
- A glazing unit according to claim 1, characterized by the fact that the panes (2;
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3_13. —
- A glazing unit according to one of claims 1 and 2, characterized by the fact that the electrically conductive thin layer or layers (5) are disposed in the interior thereof.
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4_13. —
- A glazing unit according to one of claims 1 to 3, characterized by the fact that at least one electrically conductive transparent thin layer (5) is constituted by a layer of doped semiconductor, deposited in particular by cathodic sputtering under vacuum or by liquid-phase or gas-phase pyrolysis, having a thickness of between 100 nm and 1000 nm and a surface resistivity of 2 to 40 Ω
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, particularly 15 to 30 Ω
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, a layer of doped semiconductor oxide being disposed to cover at least one face of a pane which is a component of this glazing unit, preferably a face turned toward the interior of the glazing unit, or being included in the body of a pane, or even being deposited on at least one face of a transparent thin film of poly(ethylene terephthalate) type, or of a thin glass plate, integrated as an additional layer in the glazed section.
- A glazing unit according to one of claims 1 to 3, characterized by the fact that at least one electrically conductive transparent thin layer (5) is constituted by a layer of doped semiconductor, deposited in particular by cathodic sputtering under vacuum or by liquid-phase or gas-phase pyrolysis, having a thickness of between 100 nm and 1000 nm and a surface resistivity of 2 to 40 Ω
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5_13. —
- A glazing unit according to claim 4, characterized by the fact that the semiconductor oxide is indium oxide doped with tin (ITO) or tin oxide doped with antimony or fluorine.
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6_13. —
- A glazing unit according to one of claims 1 to 3, characterized by the fact that at least one electrically conductive transparent thin layer (5) is constituted by at least one metal layer M inserted between two layers of a dielectric transparent material D of high optical index, in such a way as to form a stack of DMD type or combinations of several base stacks of DMDMD type, the said stack or stacks being disposed so as to cover one face, preferably a face of a pane which is a component of the glazing unit, the said face being turned toward the interior of the glazing unit, or else, when one of the panes which are components of the multiple glazing unit of the window is a laminate, being disposed in the body of the said pane, applied on one of the internal faces of one of the constituents of the laminate;
on one of the glass sheets and/or on a film integrated into the laminate.
- A glazing unit according to one of claims 1 to 3, characterized by the fact that at least one electrically conductive transparent thin layer (5) is constituted by at least one metal layer M inserted between two layers of a dielectric transparent material D of high optical index, in such a way as to form a stack of DMD type or combinations of several base stacks of DMDMD type, the said stack or stacks being disposed so as to cover one face, preferably a face of a pane which is a component of the glazing unit, the said face being turned toward the interior of the glazing unit, or else, when one of the panes which are components of the multiple glazing unit of the window is a laminate, being disposed in the body of the said pane, applied on one of the internal faces of one of the constituents of the laminate;
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7_13. —
- A glazing unit according to claim 6, characterized by the fact that the metal layer M is a layer of gold or silver, and that the dielectric transparent material D of high optical index is tin dioxide or zinc sulfide.
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8_13. —
- A glazing unit according to one of claims 1 to 7, characterized by the fact that the seal is made from an elastomer which comprises a silicone or fluorosilicone that has been made conductive at least in part by incorporation into its composition of an electrically conductive filler formed from metal granules or fibers, especially of silver, copper, aluminum, nickel, silver/copper, silver/aluminum, silver/glass, etc., or from carbon black, the said conductive elastomer having in particular a volume resistivity of 2×
10−
5 to 2×
10−
3 ohm·
m (0.002 to 0.1 ohm·
cm), the electrically conductive thin layer or layers (5) being in contact with a conductive part of the seal (4), which is also designed to make contact with the structure to be provided with electromagnetic shielding.
- A glazing unit according to one of claims 1 to 7, characterized by the fact that the seal is made from an elastomer which comprises a silicone or fluorosilicone that has been made conductive at least in part by incorporation into its composition of an electrically conductive filler formed from metal granules or fibers, especially of silver, copper, aluminum, nickel, silver/copper, silver/aluminum, silver/glass, etc., or from carbon black, the said conductive elastomer having in particular a volume resistivity of 2×
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9_13. —
- A glazing unit according to claim 8, characterized by the fact that the elastomer has a Shore hardness A of 30 to 80.
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10_13. —
- A glazing unit according to one of claims 8 and 9, characterized by the fact that the seal is produced from elastomer made conductive throughout its composition.
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11_13. —
- A glazing unit according to one of claims 8 and 9, characterized by the fact that the seal (4) is made by comolding of two elastomers, one of which has been made conductive and is disposed so as to cooperate with the electrically conductive thin layer or layers (5).
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12_13. —
- A glazing unit according to one of claims 8 to 11, characterized by the fact that it is endowed with a conductivity boost comprising;
a conductive film or a conductive layer or a conductive paint on at least one part of the seal surface; and
/ora metal hoop or a metal foil (6) or an adhesive metal tape placed at the periphery of the glazing unit or at points or regions of the said periphery, against at least one internal part of the seal, in such a way as to make contact with an electromagnetic thin layer (5) and/or with the structure to be provided with electromagnetic shielding; and
/ora conductive enamel (7) or a conductive paste deposited on a conductive thin layer and making contact with the seal or, as the case may be, with a metal hoop or foil or tape at the periphery of the glazing unit or at points or regions of the said periphery.
- A glazing unit according to one of claims 8 to 11, characterized by the fact that it is endowed with a conductivity boost comprising;
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13_13. —
- A glazing unit according to one of claims 1 to 12, characterized by the fact that it comprises an aircraft window provided with electromagnetic shielding with a rating of at least 10 db, particularly 10 db to 30 db.
Specification
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Current AssigneeSaint-Gobain Glass France (Compagnie De Saint-Gobain)
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Original AssigneeSaint-Gobain Vitrage
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InventorsChaussade, Pierre, Drouet, Xavier
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Granted Patent
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Time in Patent OfficeDays
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Field of Search
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US Class Current428/34
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CPC Class CodesB64C 1/1492 Structure and mounting of t...E06B 3/66328 of rubber, plastics or simi...E06B 5/18 against harmful radiation a...H05K 9/00 Screening of apparatus or c...H05K 9/0094 being light-transmitting, e...
