Method for optimizing a progressive spectacle lens

Details Method for optimizing a progressive spectacle lens Method for optimizing a progressive spectacle lens

2007-01-30

2007-01-30

Sugarman, Scott J. (Department: 2873)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

C351S169000

Reexamination Certificate

active

11222826

ABSTRACT:
A method of optimizing a progressive lens is described.This invention is characterized by the following steps:selecting a preset progressive lens having a preset object distance function A1(x,y),selecting an object distance function A2(x=x0,y) along the main line of vision of the preset progressive lens for a lens that is to be derived,locating the map U:y→y′ along the main line of vision, such that the value y′ for which the following holds is calculated for each value of y:in-line-formulae description="In-line Formulae" end="lead"?A1(x=x0,y)=A2(x=x0,y′),in-line-formulae description="In-line Formulae" end="tail"?calculating the setpoint values S(x,y) atin-line-formulae description="In-line Formulae" end="lead"?S(x,y′)=S(x,U(y)).in-line-formulae description="In-line Formulae" end="tail"?

REFERENCES:
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patent: WO 01/81979 (2001-11-01), None
patent: WO 02/061496 (2002-08-01), None
patent: WO 02/088826 (2002-11-01), None
patent: WO 03/01929 (2003-03-01), None

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