Spectacle lens and manufacturing method therefor

Details Spectacle lens and manufacturing method therefor Spectacle lens and manufacturing method therefor

2005-03-29

2005-03-29

Sugarman, Scott J. (Department: 2873)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

C351S168000, C351S177000

Reexamination Certificate

active

06871955

ABSTRACT:
A spectacle lens is designed by using a value determined by either measuring or specifying for an individual spectacles wearer the value of the distance VR from a reference point on the back surface of a spectacle lens to the center of rotation of the eye, which adds together the value of the distance VC from a reference point of the back surface of a spectacle lens to the vertex of the cornea of the eye of the spectacles wearer at spectacle lenses wearing time, which is one of the required data in spectacle lens design, and the distance CR from the above-mentioned vertex of the cornea to the center of rotation of the eye, and manufacturing a spectacle lens based on this design specification.

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