Daylight redirecting window film laminates

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United States of America Patent

PATENT NO 11365857
APP PUB NO 20210231276A1
SERIAL NO

17233472

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A daylight redirecting window film formed by a flexible multi-layer film laminate with a total thickness of less than one millimeter and configured to be applied to an indoor-facing window surface of a building facade. The window film includes a pair of outer film substrates flanking a light redirecting core layer. The core layer includes a parallel array of channels defining total internal reflection (TIR) surfaces and linear optically transmissive structures protruding transversely thought the core layer and bonded to the outer film substrates. A light output surface of the outer film substrate which is disposed on an indoor-facing side of the laminate includes a two-dimensional pattern of light scattering microstructures which are configured to spread light at least in a plane that is perpendicular to the channels. The TIR surfaces intercept and reflect a portion of sunlight propagating through the core layer such that the window film redirects that portion of incident sunlight towards a plurality of divergent directions, forming relatively high bend angles.

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Patent Owner(s)

  • S.V.V. TECHNOLOGY INNOVATIONS INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Vasylyev, Sergiy Elk Grove, US 125 693

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