Multifocal optical device design

Details Multifocal optical device design Multifocal optical device design

2006-05-16

2006-05-16

Schwartz, Jordan M. (Department: 2873)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

C351S169000

Reexamination Certificate

active

07044601

ABSTRACT:
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.

REFERENCES:
patent: 5805260 (1998-09-01), Roffman et al.
patent: 5861935 (1999-01-01), Morris et al.
patent: 6019470 (2000-02-01), Mukaiyama et al.
patent: 6102544 (2000-08-01), Baudart et al.
patent: 6241355 (2001-06-01), Barsky
patent: 6302540 (2001-10-01), Katzman et al.
patent: 6382789 (2002-05-01), Baudart et al.
patent: 6390623 (2002-05-01), Kokonaski et al.
patent: 6776486 (2004-08-01), Steele et al.
patent: 6802606 (2004-10-01), Roffman et al.
patent: 2004/0008320 (2004-01-01), Shirayanagi
patent: 2004/0099972 (2004-05-01), Morris et al.
patent: 0744646 (1996-11-01), None
patent: 2013548 (1990-05-01), None
“International Search Report for PCT Application PCT/US2004/028771”, (Feb. 17, 2005),4 pgs.
Loos, J. , et al., “A Variational Approach to Progressive Lens Design”,Computer Aided Design, 30(8), (1998),595-602.

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