G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 1/00 (2006.01) B29D 11/00 (2006.01) C09D 5/22 (2006.01) E01F 9/04 (2006.01) G02B 5/00 (2006.01)
Patent
CA 2481854
A retroreflective device 1, for use in creating a retroreflective surface, comprises an agglomeration of glass beads 2, formed by binding together glass beads 2 of a specific size with an adhesive material 3. Selected properties, for example refractive index, of each glass bead 2 are chosen in accordance with the desired retroreflectivity of the device 1. The adhesive material 3 may be pigmented, thereby to colour light retroreflected from the device 1. Preferably, the agglomeration of glass beads 2 is approximately spherical or ovoid and the glass beads 2 are approximately spherical. A retroreflective road marking coating may comprise a road marking material applied to the surface of a road and a plurality of the retroreflective devices 1 embedded in the road marking material so as to protrude partially therefrom. The retroreflective devices 1 may also be used with a coating from which they protrude so as to provide a road surfacing material.
Durant Ian I.
Hughes Richard H.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Prismo Limited
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