EP0277818A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Electromagnetic shielding panel
Assignee: Pilkington Group Ltd
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Filing: 1988-02-03
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Granted: —
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Expires: 2008-02-03
Abstract
Abstract The invention concerns an electromagnetic shielding panel (1) for attenuating electromagnetic radiation typically in the frequency range 20 MHz to 10,000 MHz. In one embodiment of the invention, the panel comprises a laminate of two panes of glass (2)(9) one of which includes an electroconductive coating (3) sandwiched between the two sheets of glass is a plastics interlayer (i) into which is embedded four strips of fine electroconductive mesh (4,5,6,7) which lie along the edge of the laminate (8) and which are in electrical contact with the coating (3). In another embodiment of the invention, the coated glass includes peripheral bus bars (11) which are in electrical contact with the coating (3). The mesh (4,5,6,7) and bus bars (11) are arranged to make electrical contact with a metal frame (10) which may be earthed (12). Alternatively, no direct mechanical contact is made between the frame (10) and the coating (3) and a capacitive coupling (cc) suffices.
Inventors
- 👤 Leslie Thomas Clarke
- 👤 Mervyn John Flat 5 Oxford Court Davies
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 00:55
CPC Classifications
H; H05; H05K; H05K9/00; B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10165; B32B17/10174; B32B17/10009; B32B17/10036; B32B17/10376; B32B17/1055; B32B17/10761; C; C03; C03C; C03C17/00; C03C17/34; C03C17/36; C03C17/3602; C03C17/3613; C03C17/3644; C03C17/3652; C03C17/3681; H05K9/0001; H05K9/0005; H05K9/0073; H05K9/0094; B32B2305/00; B32B2305/38; B32B2307/00; B32B2307/20; B32B2307/202; B32B2307/212; B32B2307/40; B32B2307/414; B32B2607/00
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
59 words
A translucent electromagnetic shielding panel (1) comprising a pane of glass (2) carrying a coating (3) comprising a silver layer (3) having a thickness in the range 15 nm to 50 nm and a protective layer over the silver, with electrical connection (4,5,6,7)(11)(cc) means in electrical contact with the silver layer (3) all around the periphery of the coating.
Claim 2
Dependent Claim
59 words
A translucent electromagnetic shielding panel (1) comprising a pane of glass (2) carrying a coating (3) comprising a silver layer (3) having a thickness in the range 15 nm to 50 nm and a protective layer over the silver, with electrical connection (4,5,6,7)(11)(cc) means in electrical contact with the silver layer (3) all around the periphery of the coating.
Claim 3
Dependent Claim
25 words
A panel as claimed in claim 1, wherein the coating (3) comprises a silver layer (3) having a thickness between 20 nm to 30 nm.
Claim 4
Dependent Claim
24 words
A panel as claimed in claim 1 wherein the coating (3) comprises a silver layer (3) having a thickness of at least 22.5 nm.
Claim 5
Dependent Claim
23 words
A panel as claimed in claim 1, 2 or 3 wherein the silver layer (3) is sandwiched between anti-reflection layers of metal oxide.
Claim 6
Dependent Claim
15 words
A panel as claimed in claim 4 wherein the anti-reflection layers are of tin oxide.
Claim 7
Dependent Claim
24 words
A panel as claimed in claim 5 wherein each tin oxide anti-reflection layer has a thickness in the range 30 nm to 50 nm.
Claim 8
Dependent Claim
60 words
A panel as claimed in any of the preceding claims which is a laminated panel with the silver coated face (3) of the coated pane facing inwards, and the electrical connection means (4,5,6,7)(11) is sandwiched between a plastics interlayer (8) and the coating (3) and is in electrical contact with the silver layer around the whole periphery of the coating.
Claim 9
Dependent Claim
49 words
A panel as claimed in any of claims 1 to 6, which is a multiple glazing unit with the silver face (3) of the coated pane (2) facing inwards and the electrical connection means (4,5,6,7)(11)(cc) in electrical contact with the silver layer around the whole periphery of the coating.
Claim 10
Dependent Claim
33 words
A panel as claimed in claims 7 or 8, in which the electrical connection means comprises bus bars (11) in electrical contact with the silver layer (3) around the periphery of the coating.
Claim 11
Dependent Claim
27 words
A panel as claimed in claim 9, in which the bus bars (11) extend around the edges of the coated glass pane (2) to its opposite face.
Claim 12
Dependent Claim
37 words
A panel as claimed in claims 7 or 8 in which the electrical connection means comprises a border of fine electroconductive mesh (4,5,6,7) in electrical contact with the silver layer (3) around the periphery of the coating.
Claim 13
Dependent Claim
30 words
A panel as claimed in claim 11, wherein the border of electro-conductive mesh (4,5,6,7) extends beyond the edges of the coated pane along each side of the coated pane (2).
Claim 14
Dependent Claim
56 words
A panel as claimed in any of the preceding claims which comprises additionally an electroconductive surround means (10) for supporting the pane of glass (2), wherein the electrical connection means (4,5,6,7)(11)(cc) provides an electrically conductive path between the silver layer (3) and the electroconductive surround means (10) for electromagnetic radiation (ER) captured by the panel (1).
Claim 15
Dependent Claim
38 words
A panel as claimed in any of claims 1 to 6 in an electroconductive surround means (10) in which the electrical connection means is constituted by capacitive coupling (cc) between the coating and the electroconductive surround means (10).
Claim 16
Dependent Claim
34 words
The use of a panel as claimed in any of claims 1 to 13 as a light translucent shield against electromagnetic radiation (ER) having a frequency in the range 20 MHz to 10000 MHz.
Claim 17
Dependent Claim
34 words
The use of a panel as claimed in any of claims 1 to 14 as a light translucent shield against electromagnetic radiation (ER) having a frequency in the range 200 MHz to 10000 MHz.
Claim 18
Dependent Claim
79 words
A panel as claimed in claims 13 or 14 wherein the electroconductive surround means (10) is coupled to earth (12) and wherein the insertion of said panel in the transmission path (TP) of electromagnetic radiation (ER) emanating from an electromagnetic radiation source (ES) provides a substantial reduction in the electromagnetic radiation (ER) present on the side of the panel opposite the said radiation source (ES) and provides an electrically conductive path to earth (12) for said electromagnetic radiation (ER).
References Cited (Backward Citations)
No citation records indexed.
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