摘要:
A low emissivity and EMI shielding transparent composite film typically for use in association with window glazing and comprising a transparent film substrate having on one side thereof an underlayer of abrasion resistant hardcoat material with at least one infrared reflective layer covering the underlayer, typically a metallic layer which may be encased in metal oxide layers, which is then covered with a thin external protective top coat of a cured fluorinated resin.
摘要:
A combination of filters (1, 2, 3) for filtering selected wavelengths of electromagnetic radiation is provided on a transparent substrate (4) such as a plastic film or glazing of a window. The combination of filters (1, 2, 3) prevents or attenuates the passage of wavelengths through the substrate (4) which would pose a security risk. The combination of filters (1, 2, 3) is useful to prevent unauthorized data collection and information exchange from or within buildings or otherwise prevent such unauthorized data collection and information exchange from, for example, computer monitors or screens, personal digital assistance, and local area networks. The substrate (4) with the combination of filters (1, 2, 3) may be in the form of a bag or a tent.
摘要:
A transparent exterior window film composite (10) comprising a base sheet material (11) having an outer PET (polyethylene terephthalate) film layer (12) which has been surface treated to elevate adhesion thereto and which is impregnated with an ultra violet light absorber (UVA), the treated surface being coated with a UV stabilized acrylic polymer or co-polymer undercoat (14) having a UV stabilized hard coat layer (15) thereon formed from at least one aliphatic urethane acrylate oligomer and at least one multifunctional acrylate monomer, the undercoat layer having a thickness which is at least as thick as the hard coat.
摘要:
A transparent protective polymeric film (10) composite for laying over a surface, typically glass, the protective composite comprising a transparent polymeric film layer (11), typically PET, coated on at least one side with a transparent hard coat (12) containing at least 0.04% by weight of a release agent. The film composite may be formed into a laminate comprising a plurality of sheets of the film composite the sheets being arranged in a stack such that adhesive (13) on one film composite sheet adheres to the hard coat (12) on an underlying sheet, and the release agent reduces the adhesion between the hard coat surface and the adhesive allowing the top sheet in the stack to be peeled off in turn as required.
摘要:
A plasma source includes a structure made up of two hollow cathode shapes (1,2) connected to a bipolar AC power supply (5). The bipolar power supply alternately drives one hollow cathode to a negative voltage while the opposite hollow cathode is driven to a positive voltage. As one of the two hollow cathode shapes is driven negative, the hollow cathode discharge forms within the corresponding cavity. The other cathode then forms an anode, causing electrons to escape the plasma and travel to the other side, completing the electric circuit. The plasma generator thus formed may be used as a heat source for an effusion cell to form a plasma from the reactant gas, or to increase the reactivity of gas situated between a vacuum deposition source and a substrate to be coated.
摘要:
A heat reflecting fenestration composite is provided which includes in sequence: (a) a substantially transparent substrate; (b) a first outer dielectric layer; (c) an infrared reflecting metal layer; (d) a color correcting metal layer comprising a metal different from the infrared reflecting metal layer; (e) a protective metal layer comprising a metal different form the infrared reflecting metal layer and different from the color correcting layer; and (f) a second outer dielectric layer. The dielectric layers are typically indium oxide, indium zinc oxide, indium tin oxide or mixtures thereof. Preferably, the composite also includes additional layers of infrared reflecting metal layer, color correcting metal, protective metal an dielectric. Also preferably, the composite comprises a top layer of glass or transparent polymeric plastic. The infrared reflecting metal layer is typically silver, gold, copper or alloys thereof. The color correcting metal layer typically has a refractive index in the visible light range between about 0.6 and about 4 and has an extinction coefficient for light in the visible light range between about 1.5 and about 7. Metals such as chromium, cobalt, nickel, zinc, palladium, indium, tin, antimony, platinum, bismuth and alloys thereof can be used in the color correcting metal layer, with indium being preferred. The protective metal layer is made from a metal whose oxide is substantially non-optically absorbing, such as aluminum, titanium, zirconium, niobium, hafnium, tantalum, tungsten and alloys thereof, with titanium being preferred. The color correcting and protective metal layers can also be disposed on both sides of the infrared reflecting metal layer. Such composites provide a heat reflecting fenestration structure having exception degradation resistant properties and visible light transmission reduction properties, without excessive reflectance.
摘要:
A heat-treated titanium nitride film including a polymeric substrate and at least one titanium nitride layer is disclosed. The titanium nitride layer of the film is characterized by microscopic uniform generally parallel surface cracking in the machine direction of the film. The film is particularly useful as a solar control film suitable for application to a contoured transparent substrate with reduced or eliminated ghosting. A method for treating a titanium nitride film prior to application to a transparent contoured substrate and a method for applying a titanium nitride film to a transparent contoured substrate are also described.
摘要:
An optically active film composite comprising a transparent substrate and at least one layer of a block copolymer blend comprising between 30:70 to 70:30 percent by volume of each component of the copolymer, the block copolymer forming lamellar microdomains of each polymeric component, which components have different refractive indices. The thickness of the lamellae may be controlled through selection of molecular weights of the components and by the addition of compatible homopolymers.
摘要:
Now, according to the present invention, interference filters (10) are provided that incorporate two band pass interference filters (12,14) into a single composite interference filter (10). The two filters each have at least one band pass curve that is centered at the same wavelength for light that is incident at a given angle to the filter surface. The band pass curve shifts of the filter components, however, are dissimilar, which results in a decrease of transmitted light as the angle of incidence diverges from the given angle.