US Patent 8172411 Multi-curvature convex mirror having an enhanced field of vision

A multi-curvature convex mirror is comprised of a first reflective surface having a first curvature and defined by a portion of the surface area of a greater sphere and a second reflective surface having a second curvature greater than the first curvature and defined by a portion of the surface area of a lesser sphere that intersects the surface area of the greater sphere. The primary and secondary reflective surfaces are comprised of a series of locations, each defined by an x, y, and z coordinate, determined in accordance with the relationship