Patent ID: 7158222

Claim:
A spectacle lens evaluation method characterized by executing: the measurement step of, when a first surface of a target lens is irradiated with light, measuring optical paths of exit light beams emerging from a plurality of measurement points on a second surface on an opposite side; the target lens dioptric power distribution calculation step of calculating a dioptric power distribution of the target lens on the basis of the measurement result; the design lens spatial model construction step of constructing a design lens spatial model imitating optical characteristics of the target lens on the basis of design values registered in advance; the light exit position calculation step of calculating a light exit position on a first surface of the design lens spatial model, assuming that light directly opposite to the exit light having undergone optical path measurement is incident at the same position as the measurement point on a second surface of the design lens spatial model; the exit light optical path calculation step of calculating optical paths of exit light beams emerging from a plurality of measurement points on the second surface of the design lens spatial model, assuming that the same light as that in the measurement step is applied at the calculated light exit position of the design lens spatial model; the design lens dioptric power distribution calculation step of calculating a dioptric power distribution of the design lens spatial model on the basis of the calculated optical paths of the exit light beams; and the error distribution calculation step of calculating an error distribution of the dioptric power distribution of the target lens with respect to the dioptric power distribution of the design lens spatial model.