UV STABLE ASSEMBLIES COMPRISING MULTI-LAYER OPTICAL FILM
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Abstract
Assemblies comprising multi-layer optical film comprising optical layers reflecting incident UV and blue light over specified wavelength ranges. Embodiments of the multi-layer optical films are useful, for example, as a UV protective covering. An exemplary UV stable assembly comprises a multi-layer optical film comprising at least a first plurality of first and second optical layers reflecting at least 50 percent of incident UV light over at least a 30 nanometer wavelength range in a wavelength range from at least 300 nanometers to 400 nanometers, and a second plurality of first and second optical layers reflecting at least 50 percent of incident light over at least 30 nanometer wavelength in a wavelength range from at least 430 nanometers to 500 nanometers.
15 Citations
22 Claims
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1-6. -6. (canceled)
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7. A UV stable assembly comprising
a first layer that absorbs at least 90 percent of incident UV light over a wavelength range from at least 300 nanometers to 400 nanometers; -
a multi-layer optical film comprising a plurality of first and second optical layers that reflects at least 50 percent of incident light over at least 30 nanometer wavelength in a wavelength range from at least 430 nanometers to 500 nanometers, wherein the multi-layer optical film is essentially free of PEN; and a material that absorbs at least some percent of incident light over a wavelength range from at least 430 nanometers to 500 nanometers, wherein the assembly has, in order, the first layer that absorbs at least 90 percent of incident UV light, the multi-layer optical film comprising a plurality of first and second optical layers that reflects at least 50 percent of incident light over a wavelength range from at least 430 nm to 500 nm, and the material that absorbs at least some incident light over a wavelength range from at least 430 nm to 500 nm. - View Dependent Claims (8, 9, 10, 11, 12)
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13. An assembly comprising:
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a multi-layer optical film comprising at least first and second optical layers reflecting at least 50 percent of incident light over at least 30 nanometer wavelength in a wavelength range from at least 430 nanometers to 500 nanometers, wherein the plurality of first and second optical layers is essentially free of PEN; and a multi-layer optical film comprising at least one layer comprising PEN. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification