Low-profile raised retroreflective sheeting

Details Low-profile raised retroreflective sheeting Low-profile raised retroreflective sheeting

G - Physics

02

B

88/113, 240/151,

G02B 5/124 (2006.01) E01F 9/04 (2006.01)

Patent

CA 1090127

ABSTRACT Low-profile raised retroreflective sheeting useful for retroreflecting light that strikes the sheeting at a high incidence angle comprises a base retroreflective layer and a light-directing layer disposed above the base retroreflective layer. The light-directing layer comprises a longitudinally-extending series of short transparent projections which each have upwardly extending front and back edge surfaces. The front edge surface is disposed across the path of high-incidence-angle light so as to transmit a high percentage of such light rays; and the back edge surface is disposed so as to reflect the light transmitted through the front edge surface to the retro- reflective layer for retroreflection by the layer and to return light retroreflected by the retroreflection elements back through the front edge surface toward its source.

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