Patent ID: 6703108
Filing Date: 2004-03-09
Classification: E01F,G02B,Y10T

Abstract:
A retroreflective material comprising on a top surface thereof an enclosed-lens retroreflective sheet that comprises a cover layer, a monolayer of retroreflective elements and a specular reflector or an air interface protected by a sealing film, wherein first portions of said monolayer are arranged in an upwardly contoured profile and second portions of said monolayer arc arranged in a lower, substantially planar horizontal position, said material comprising a plurality of said first portions and a plurality of said second portions and wherein the material exhibits bright retroreflective performance under both wet and dry conditions such that the minimum retroreflective brightness of said material is at least 50 percent of the maximum retroreflective brightness of such material at any orientation angle at a constant entrance angle.