Wide band semi-specular mirror film incorporating nanovoided polymeric layer

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United States of America Patent

PATENT NO 9995861
APP PUB NO 20130215512A1
SERIAL NO

13878625

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Low loss, high reflectivity wide band mirror films provide a desired mix of specular reflection and diffuse reflection or scattering to provide semi-specular reflectivity. The mirror films generally include both a specularly reflective multilayer optical film (MOF) having a wide reflection band, and a scattering layer. In some cases a low refractive index TIR layer is sandwiched between the MOF and the scattering layer. In other cases the scattering layer contacts the MOF directly. In embodiments that include the TIR layer, the TIR layer preferably has a nanovoided morphology and includes a plurality of particles and a polymer binder. In embodiments wherein the scattering layer contacts the MOF directly, the scattering layer preferably also has a nanovoided morphology and includes a plurality of particles and a polymer binder.

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Patent Owner(s)

Patent OwnerAddress
3M INNOVATIVE PROPERTIES COMPANYP O BOX 33427 SAINT PAUL MN 55133-3427

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Black, William B Eagan, US 41 1404
Coggio, William D Westford, US 63 1342
Tai, Huiwen Woodbury, US 18 108
Weber, Michael F Shoreview, US 218 13445

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