US 8,985,766 B2 · Method for designing spectacle lenses

Abstract

A plurality of to-be-evaluated lenses that differ in lens surface design from one another is prepared in an evaluation-value calculating step. Thereafter, a subject's predetermined biological information, e.g., brain waves, is measured for each of the to-be-evaluated lenses by allowing the subject to wear each of the lenses, and an evaluation value for each of the lenses is calculated relative to a predetermined index in the brain waves, for example, relative to a “state of being under stress.” Thereafter, a correlation between the calculated evaluation value and a lens surface shape is calculated as an index characteristic in a lens-surface-shape determining step. Thereafter, a lens surface shape of a suitable spectacle lens in the index is determined based on the index characteristic, and the lens surface shape is fed back as a shape of a to-be-evaluated lens of the evaluation-value calculating step.

Claims19

Dependent claims

A method for designing spectacle lenses, the method comprising:

an evaluation-value calculating step of preparing a plurality of to-be-evaluated lenses for lens surface design performed differently from each other, thereafter measuring predetermined biological information of a subject for each of the to-be-evaluated lenses by allowing the subject to wear each of the to-be-evaluated lenses, wherein the predetermined biological information is brain waves, and calculating an evaluation value of each of the to-be-evaluated lenses with respect to a predetermined index in the brain waves;
and
a lens-surface-shape determining step of calculating a correlation between an evaluation value of each of the to-be-evaluated lenses calculated in the evaluation-value calculating step and a lens surface shape of each of the to-be-evaluated lenses as an index characteristic, and determining a lens surface shape of a spectacle lens suitable in the index based on the index characteristic.

Dependencies are inferred from the claim text.

Method for designing spectacle lenses

Life of this patent

Method for designing spectacle lenses

Life of this patent

Abstract

Claims19