Patent ID: 7992785

Claim:
A spinner for scattering a laser beam comprising: a mirrored polygon having a centerline, the mirrored polygon including a first number of mirrored facets defining vertices of the polygon where the centerline passes through a first vertex and a second vertex, the first number of mirrored facets including a second number of pairs of offset mirrored facets, wherein the mirrored facets of the pairs of offset mirrored facets are oriented at different vertex angles, at least a first vertex angle defined by a first line passing through the first vertex and perpendicular to the centerline and a first mirrored facet having the first vertex as a vertex, and at least a second vertex angle defined by a second line passing through the second vertex and perpendicular to the centerline and a second mirrored facet having the second vertex as a vertex; wherein a first supplementary angle of the first vertex angle is greater than an interior angle of a regular polygon having a same number of facets and a second supplementary angle of the second vertex angle is less than the interior angle of the regular polygon with the same number of facets.