David S Jacob

US Patent:

6626544, Sep 30, 2003

Filed:

Mar 28, 2001

Appl. No.:

09/820162

Inventors:

Xiao-Jing Lu - Avon CT
Gary J. Gauer - South Windsor CT
David A. Jacob - Hilton NY
Erich Minier - Rochester NY

Assignee:

Reflexite Corporation - Avon CT

International Classification:

G02B 5124

US Classification:

359530, 359531, 359532, 359529, 359834

Abstract:

A retroreflective structure includes a retroreflective sheeting having an array of transparent prisms formed into pairs of prisms. Each prism includes a base aperture and three intersecting lateral faces meeting at an apex. Each of the lateral faces includes a base edge which forms a portion of the perimeter of the base aperture. The base edge of each lateral face intersects the base edge of a contiguous lateral face to form a base point, the first face of at least one prism in the array including 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 are contiguous along an edge having a first and second end points, 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.