Internally patterned multilayer optical films using spatially selective birefringence reduction
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United States of America Patent
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Feb 21, 2017
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app pub date -
Jun 26, 2014
filing date -
Dec 22, 2008
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Abstract
A reflective film includes interior layers arranged to selectively reflect light by constructive or destructive interference, the layers extending from a first zone to a second zone of the film. The film has a first thickness and the interior layers provide a first reflective characteristic in the first zone; the film has a second thickness and the interior layers provide a second reflective characteristic in the second zone. The difference between the first and second reflective characteristics is not substantially attributable to any difference between the first and second thicknesses, which difference may be zero. Rather, the difference in the reflective characteristics is substantially attributable to reduced birefringence of at least some of the interior layers in one zone relative to the other zone. The film may also incorporate absorbing agents to assist in the manufacture or processing of the film. Related methods and articles are also disclosed.
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Patent Owner(s)
- 3M INNOVATIVE PROPERTIES COMPANY
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- [Patents Count]
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Dunn, Douglas S | Maplewood, US | 65 | 1178 |
Merrill, William W | White Bear Lake, US | 94 | 3024 |
Potts, Travis L | Woodbury, US | 24 | 223 |
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