Lenses having astigmatism correcting inside reflective surface

摘要

A lens includes a material spanning an area and providing an inside reflective three-dimensional (3D) surface. The reflective 3D surface is defined by a plurality of reflective optical elements including a first reflective optical element and at least a second reflective optical element that each include a sub-element set including a center sub-element (CS) and a plurality of neighboring sub-elements. The plurality of reflective optical elements each have their own non-overlapping optical center axis; and a cylindrically bent spherical surface. The cylindrically bent spherical surface is defined by the neighboring sub-elements in each reflective optical element being located at different 3D points so that the reflective optical elements relative to at least one neighboring reflective optical element provides different values of spherical curvature and different values of cylindrical axis orientation. Each of the plurality of reflective optical elements can provide a different optical power for correction of astigmatism.

主权项

1. A lens, comprising:
a material spanning an area providing a single inside reflective three-dimensional (3D) surface; wherein said area of said reflective 3D surface is defined by a plurality of reflective optical segments including a first reflective optical segment and at least a second reflective optical segment that each include a sub-element set including a center sub-element (CS) and a plurality of neighboring sub-elements; said plurality of reflective optical segments each having their own non-overlapping optical center axis and a cylindrically bent spherical surface; wherein said cylindrically bent spherical surface is defined by said plurality of neighboring sub-elements in each of said plurality of reflective optical segments being located at different 3D points so that said plurality of reflective optical segments relative to at least one neighboring one of said plurality of reflective optical segments provide different values of spherical curvature and different values of cylindrical axis orientation, and wherein each of said plurality of reflective optical segments provide a different optical power for correction of astigmatism.