04202600 is referenced by 165 patents and cites 8 patents.

Retroreflective sheeting having a plurality of retroreflective cube corner prisms distributed over one of its surfaces is described. The prisms are disposed in a planar array having a plurality of zones of prisms having differing angular orientations such that the zones have differing retroreflective brightness when illuminated by a light beam at a high angle of incidence. The zones are small enough to be substantially unresolvable by the unaided human eye at the expected viewing distances, so that the sheeting appears to have uniform retroreflective brightness when viewed at a high angle of incidence.

Title
Diced retroreflective sheeting
Application Number
5/899311
Publication Number
4202600
Application Date
April 24, 1978
Publication Date
May 13, 1980
Inventor
Donald H Walker
Winchester
MA, US
Thomas F Burke
Wayland
MA, US
Agent
Christie Parker & Hale
Assignee
Avery International Corporation
CA, US
IPC
G02B 5/122
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