Methods and apparatus for ultrawide entrance angle reflective articles for use with autonomous vehicle machine vision systems

A retroreflective sheeting overlay article comprising:

• a body layer presenting a front surface;
• a backing layer having an adhesive surface;
• and
• an intermediate layer material of retroreflective material between the body layer and the backing layer having a texturized array of cube corner elements configured with at least some of the cube corner elements having an apex axis having an orientation generally tilted relative to a normal of the front surface proximate the cube corner element such that the mezzanine layer is reflective for electromagnetic radiation striking the front surface at higher entrance angles above a critical angle but is bi-directionally transmissive for electromagnetic radiation striking the front surface at lower entrance angles below the critical angle.

A retroreflective sign article, comprising:

• a backing material;
• and
• an approved sign sheeting material applied to the backing material;
• and
• an overlay material applied to the sign sheeting material constructed with a layer of texturized cube corner elements configured with at least some of the cube corner elements having an apex axis having an orientation generally tilted relative to a normal of the front surface proximate the cube corner element such that the mezzanine layer is reflective for electromagnetic radiation striking the front surface at higher entrance angles above a critical angle but is bi-directionally transmissive for electromagnetic radiation striking the front surface at lower entrance angles below the critical angle.