Patent ID: 6626544
Filing Date: 2003-09-30
Classification: G02B,Y10S

Abstract:
A retroreflective sheeting comprising an array of transparent prisms formed into pairs of prisms, each prism comprising a base aperture and three intersecting lateral faces which meet at an apex, each of the lateral faces having a base edge which forms a portion of the perimeter of the base aperture and said base edge of each lateral face intersects the base edge of a contiguous lateral face to form a base point, wherein a first face of at least one prism in the array includes at least a first face first planar surface and a first face second planar surface, the first face first planar surface and the first face second planar surface being contiguous along an edge having a first end point and a second end point which forms at least a portion of a middle aperture, wherein the apex, the first end point and a first base point are coplanar and form a continuous edge from the first base point to the apex.