Optical: systems and elements – Stereoscopic – Having record with lenticular surface
Reexamination Certificate
2006-07-12
2010-12-14
Fineman, Lee (Department: 2872)
Optical: systems and elements
Stereoscopic
Having record with lenticular surface
C359S619000
Reexamination Certificate
active
07852557
ABSTRACT:
An object of the present invention is to provide a stereoscopic sheet structure in which a three-dimensional design appears to be changing by changing the angle of observation, the stereoscopic sheet structure being a stereoscopic sheet structure that has: a convex lens assembly which is formed on one surface of a sheet member and in which a plurality of convex lenses are arranged; and a repeating design portion in which a plurality of design units are arranged on a focal plane of the convex lenses at arrangement intervals and/or in arrangement directions different from those of the convex lenses, and which has a continuously deformed design portion in which the arrangement intervals and arrangement directions of the design units regularly change while satisfying the condition of 0.95≦DN˜N+1/DN+1˜N+2≦0.95 and −1≦θ≦+1. It should be noted that the D is an interval between adjacent design elements, and the θ is an intersection angle that is formed between a straight line connecting adjacent design elements and a straight line connecting one of the adjacent design elements to a design element adjacent thereto.
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Fineman Lee
Grapac Japan Co., Inc.
Holtz, Holtz, Goodman & Chick, P.C.
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