Patent ID: 9207467
Filing Date: 2015-12-08
Classification: G02C

Abstract:
1. A method of making a lens, comprising: forming a first regressive rotationally symmetric optical design element having a first perimeter that provides an optical power profile within a first optical power region in which the power continuously or discontinuously increases from the center of the first optical power region to the first perimeter; forming a first non-regressive rotationally symmetric optical design element having a second perimeter that provides an optical power profile within a second optical power region in which the power continuously or discontinuously decreases from the center of the second optical power region to the second perimeter; forming a second non-regressive rotationally symmetric optical design element having a third perimeter that provides an optical power profile within a third optical power region in which the power continuously or discontinuously decreases from the center of the third optical power region to the third perimeter, wherein the first perimeter and the third perimeter overlap; and forming a second regressive rotationally symmetric optical design element having a fourth perimeter that provides an optical power profile within a fourth optical power region in which the power continuously or discontinuously increases from the center of the fourth optical power region to the fourth perimeter, wherein the second perimeter and the fourth perimeter overlap; wherein the first regressive rotationally symmetric optical design element and the second non-regressive rotationally symmetric optical design element are located on the same surface; wherein the first regressive rotationally symmetric optical design element and the first non-regressive rotationally symmetric optical design element are located on the same surface.