Method and system for electro-active spectacle lens design

• US 7,290,876 B2
• Filed: 07/18/2005
• Issued: 11/06/2007
• Est. Priority Date: 07/02/1999
• Status: Expired due to Fees

• Current Assignee: E-Vision Optics LLC
• Original Assignee: e-Vision, LLC (New Smart Optics, Inc.)
• Inventors: Duston, Dwight P., Kokonaski, William
• Primary Examiner(s): SCHWARTZ, JORDAN MARC
• Application Number:
  US11/183,454
• Publication Number:
  US 20060023004A1
• Time in Patent Office: 841 Days
• Field of Search: 351/159, 351/177
• US Class Current: 351/177
• CPC Class Codes: G02C 7/02 Lenses; Lens systems ; Methods of designing lenses
• CPC Class Codes: G02C 7/101 having an electro-optical light valve electro-optical elements per se G02F

Abstract

A method and system for designing electro-active lenses adapted to correct for a higher-order aberration, whereby a desired pixel size is determined. In certain embodiments, the desired pixel size may be determined by identifying a desired pixel size for an electro-active lens adapted to correct for a conventional aberration.

Claims

1. A method for determining the number of single-layer pixel electrodes in an electro-active lens having an electro-active pixilated portion that corrects for a higher order aberration of an eye, the method comprising:

a) identifying a surface area of the electro-active pixilated portion;

b) selecting a desired pixel electrode width between 240 and 50 microns per pixel for the electro-active pixilated portion;

c) dividing said surface area by said desired pixel electrode width;

d) dividing the value obtained in step “

c”

by said desired pixel electrode width;

e) multiplying the value obtained in step “

d”

by a fill factor; and

f) producing said electro-active lens.

2. The method of claim 1 wherein said fill factor is slightly less than 1.

3. A system for determining the number of single-layer pixel electrodes in an electro-active lens having an electro-active pixilated portion that corrects for a higher order aberration of an eye, the system comprising:

a) a means for identifying a surface area of the electro-active pixilated portion;

b) a means for selecting a desired pixel electrode width between 240 and 50 microns per pixel for the electro-active pixilated portion;

c) a means for dividing said surface area by said desired pixel electrode width;

d) a means for dividing the value obtained in step “

c”

by said desired pixel electrode width;

e) a means for multiplying the value obtained in step “

d”

by a fill factor;

f) a means for producing said electro-active lens.

4. The system of claim 3 wherein said fill factor is slightly less than 1.