<p>Multifocal optical device designs receive input parameters to specify a desired power distribution function, a power deviation weight function, and an astigmatism weight function over the design field. A fourth-order partial differential variational equation is linearized by defining the optical surface in terms of perturbations from a base surface such as a sphere or a toric. The solution may be expressed as piecewise quadratic splines superposed over a triangulation of the field. Evaluation of the surface may use a set of tensor-product splines. An astigmatic base surface permits both multiple magnifying powers and a prescribed astigmatism correction in a single optical surface.</p>
申请公布号
WO2005026825(A1)
申请公布日期
2005.03.24
申请号
WO2004US28771
申请日期
2004.09.03
申请人
REGENTS OF THE UNIVERSITY OF MINNESOTA;WANG, JING;SANTOSA, FADIL;GULLIVER, ROBERT, D.