Bae Systems, Inc.

Daniel Benjamin Black

Leslie Charles Laycock

Mohammed-Asif Akhmad

Ian Anthony Moore

Mark Trevor Newman

A material for 3D printing is described. The material comprises a polymeric composition comprising a thermoplastic polymer; and from 50 to 99 wt. % ceramic particles comprising a metal, wherein at least 50% by weight of the particles have a diameter in a range from 10 to 100 &#x3bc;m; wherein the material has a dielectric strength of at least 5 kV/mm and/or a dielectric constant of at least 5.

Material for 3D printing and a 3D printed device

A method of forming a filter, comprising the steps of: &#x2014;selecting at least a first wavelength corresponding to a predetermined laser threat and having a first colour in the visible spectrum; &#x2014;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; &#x2014;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.

Filter for laser protection

There is disclosed a filter for a vehicle window comprising a layer of filter material, the layer of filter material being for substantially preventing the transmission of radiation at a first predetermined visible wavelength band, the first predetermined visible wavelength band covering the wavelength of a predetermined laser threat, whilst substantially allowing visible wavelengths outside of the band to be transmitted, such that the filter can offer a visible light transmission of at least 70%, and a radiation detector, such that radiation at the first predetermined wavelength band can be detected.

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Chelmsford, United Kingdom

Daniel Benjamin Black