Disclosed herein is a multi-layered window or door system for EMP protection. This may include a frame-shaped window or door frame, a plurality of shielding materials disposed on a side of the window or door frame to be spaced apart from each other, a first bracket disposed between the plurality of shielding materials and supported by an elastic mechanism, and a second bracket disposed outside an outermost shielding material among the plurality of shielding materials and supported by a cylinder.

Disclosed herein is a multi-layered window or door system for EMP protection. This may include a frame-shaped window or door frame, a plurality of shielding materials disposed on a side of the window or door frame to be spaced apart from each other, a first bracket disposed between the plurality of shielding materials and supported by an elastic mechanism, and a second bracket disposed outside an outermost shielding material among the plurality of shielding materials and supported by a cylinder.

Electromagnetically shielding an enclosable structure having a floor, walls, a ceiling, and at least one closeable opening by applying a shielding wallcovering to at least a portion of one of the walls and applying a second type of shielding material to at least a portion of the enclosable structure, wherein the second type of shielding material differs from the shielding wallcovering. The shielding wall covering is wallpaper comprising a metal-coated broad good and a resin. Other types of shielding material may include a transparent, shielding window covering such as NiCVD coated screen of woven silk fibers; shielded flooring such as a layered combinations of Kevlar non-woven as a base layer, nickel-coated non-woven layers, and a PCF toughened polymer; and a transition shielding strip made of a base layer of the shielding wallpaper with a PCF toughened polymer coating over a portion of the strip.

Electromagnetically shielding an enclosable structure having a floor, walls, a ceiling, and at least one closeable opening by applying a shielding wallcovering to at least a portion of one of the walls and applying a second type of shielding material to at least a portion of the enclosable structure, wherein the second type of shielding material differs from the shielding wallcovering. The shielding wall covering is wallpaper comprising a metal-coated broad good and a resin. Other types of shielding material may include a transparent, shielding window covering such as NiCVD coated screen of woven silk fibers; shielded flooring such as a layered combinations of Kevlar non-woven as a base layer, nickel-coated non-woven layers, and a PCF toughened polymer; and a transition shielding strip made of a base layer of the shielding wallpaper with a PCF toughened polymer coating over a portion of the strip.

An optical device includes a shaped layer, an optical function layer, and an embedding resin layer. The shaped layer has a structure forming a concave section. The optical function layer is formed on the structure, and partially reflects incident light. The embedding resin layer is made of energy beam curable resin, the embedding resin layer having a first layer having a first volume, and a second layer formed on the first layer, the second layer having a second volume, the concave section being filled with the first layer, a ratio of the second volume to the first volume being equal to or larger than 5%, the structure and the optical function layer being embedded in the embedding resin layer. In the optical device, at least one of the shaped layer and the embedding resin layer has light transmissive property, and an entrance surface for the incident light.

An optical device includes a shaped layer, an optical function layer, and an embedding resin layer. The shaped layer has a structure forming a concave section. The optical function layer is formed on the structure, and partially reflects incident light. The embedding resin layer is made of energy beam curable resin, the embedding resin layer having a first layer having a first volume, and a second layer formed on the first layer, the second layer having a second volume, the concave section being filled with the first layer, a ratio of the second volume to the first volume being equal to or larger than 5%, the structure and the optical function layer being embedded in the embedding resin layer. In the optical device, at least one of the shaped layer and the embedding resin layer has light transmissive property, and an entrance surface for the incident light.

An electromagnetic wave shielding material is provided that is configured to prevent a usage environment from being limited. The electromagnetic wave shielding material shields an electromagnetic wave having a frequency, and includes a substrate and a plurality of resonance loops disposed on the substrate. Moreover, the plurality of resonance loops are positioned on the substrate to be magnetically coupled to each other. Each of the resonance loops forms an LC parallel resonance circuit that resonates at the frequency of the electromagnetic wave.

A system that utilizes a very thin arrangement of transparent sub panels containing embedded very small distributed electromagnet wires to control the distribution of very fine magneto-rheological fluid particles suspended in a very thin panel sandwiched between the electromagnet wire panels. The current applied to specific electromagnets may be used to control the amount of electromagnetic energy, such as visible light, that can be transmitted through the panel system. The system may also be used to increase or decrease the rigidity of the multi-panel structure as a function of current applied to the electromagnets.

A system that utilizes a very thin arrangement of transparent sub panels containing embedded very small distributed electromagnet wires to control the distribution of very fine magneto-rheological fluid particles suspended in a very thin panel sandwiched between the electromagnet wire panels. The current applied to specific electromagnets may be used to control the amount of electromagnetic energy, such as visible light, that can be transmitted through the panel system. The system may also be used to increase or decrease the rigidity of the multi-panel structure as a function of current applied to the electromagnets.

A method of forming a filter, comprising the steps of:selecting at least a first wavelength corresponding to a predetermined laser threat and having a first colour in the visible spectrum;providing a generally transparent substrate and forming a first notch filter region therein configured to substantially block incident radiation thereon of wavelengths within a first predetermined wavelength band including said first wavelength;selecting a second wavelength having a second colour in the visible spectrum and forming a colour balancing notch filter region in said substrate configured to block incident radiation thereon of wavelengths within a wavelength band including said second wavelength, thereby to balance or neutralise any colour distortion of said substrate caused by said first notch filter region.