Inventors:
C. Benjamin Wooley - Jacksonville FL, US
Pierre Gerligand - Jacksonville FL, US
Jing Wang - Arden Hills MN, US
Shyamy Sastry - Roanoke VA, US
James S. Merritt - Lebanon OH, US
Assignee:
Essilor International (Compagnie Generale D'Optique) - Charenton Le Pont
International Classification:
G02C 7/06
Abstract:
Designing spectacle lens blanks for a dual-surface progressive addition lens (PAL) comprising determining a prescription range from a first set of first designs to produce a second set of first designs satisfying the prescription range, determining a common surface using the second set of first designs, and using the common surface to produce a set of second designs satisfying the prescription range.