EP0456487A2
Expired / Lapsed
EP
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Interference filters
Assignee: Messer LLC
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Filing: 1991-05-09
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Granted: —
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Expires: 2011-05-09
Abstract
Abstract An infrared reflecting interference filter capable of transmitting a desired proportion of visible radiation while reflecting a large portion of incident solar radiation comprising a transparent substrate coated with a dielectric layer and a metal reflectance layer with a precoat layer being interposed between each metal-dielectric layer interface. <IMAGE>
Inventors
- 👤 Jesse D. Wolfe
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 07:56
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/34; C03C17/36; C03C17/3602; C03C17/3618; G; G02; G02B; G02B5/00; G02B5/20; G02B5/28; C03C17/3626; C03C17/3642; C03C17/3652; C03C17/3657; C03C17/366; G02B5/281; G02B5/282; C03C2217/00; C03C2217/70; C03C2217/78
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
29 words
An interference filter which comprises: a transparent substrate, a dielectric layer, an optically reflective metal layer, and a precoat layer interposed between the dielectric layer and the metal layer.
Claim 2
Dependent Claim
32 words
An interference filter according to Claim 1 which comprises alternate dielectric layers and metal layers on the substrate and a precoat layer is interposed between each dielectric layer and each metal layer.
Claim 3
Dependent Claim
17 words
An interference filter according to Claim 1 or Claim 2 in which the substrate is a glass.
Claim 4
Dependent Claim
16 words
An interference filter according to any preceding claim in which the substrate is a polymeric material.
Claim 5
Dependent Claim
25 words
An interference filter according to any preceding claim in which the optically reflective metal layer comprises one or more of silver, gold, copper and platinum.
Claim 6
Dependent Claim
23 words
An interference filter according to any preceding claim in which the precoat layer comprises nickel, chromium, rhodium and platinum or an alloy thereof.
Claim 7
Dependent Claim
32 words
An interference filter according to any preceding claim in which the precoat layer is formed from an alloy comprising approximately 1 to 80 percent nickel and approximately 1 to 20 percent chromium.
Claim 8
Dependent Claim
16 words
An interference filter according to any preceding claim in which the dielectric layer comprises silicon nitride.
Claim 9
Dependent Claim
21 words
An interference filter according to any one of Claim 1 to 7 in which the dielectric layer comprises a metal oxide.
Claim 10
Dependent Claim
30 words
An interference filter according to Claim 9 in which the dielectric layer comprises one or more of titanium oxide, silicon oxide, aluminium oxide, tantalum oxide, zirconium oxide and tin oxide.
References Cited (Backward Citations)
No citation records indexed.
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