Retroreflective articles having polymer multilayer reflective coatings
First Claim
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1. A retroreflective article that comprises:
- a layer of optical elements; and
a multiple layer reflective coating disposed in optical association with the optical elements, the reflective coating comprising at least two adjacent layers having different refractive indices, at least one of which layers comprises a cured polymer.
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Abstract
A retroreflective article that has a layer of optical elements and a multilayer reflective coating disposed on the optical elements. The reflective coating reflects light back into the optical elements so that it can be returned toward the light source. The multilayer reflective coating has multiple polymer layers and has layers that possess different refractive indices.
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Citations
17 Claims
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1. A retroreflective article that comprises:
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a layer of optical elements; and
a multiple layer reflective coating disposed in optical association with the optical elements, the reflective coating comprising at least two adjacent layers having different refractive indices, at least one of which layers comprises a cured polymer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification