Veiling Luminance Caused by a Peripheral Glare Source on Extra-Foveal Vision

抄録

To verify the validity of Stiles–Crawford’s formula that defines veiling luminance caused by a peripheral glare source on extra-foveal vision, this study conducted peripheral target detection experiments with/without a glare source located in the peripheral visual field. The experimental results suggested that veiling luminances obtained from our experiments was higher than that of the Stiles–Crawford formula. On the other hand, the exponents n of the regression curves obtained from our experiments were smaller than those of the Stiles–Crawford model. Thus, we attempted to modify the Stiles–Crawford formula based on our experimental data. It should be noted that veiling luminance caused by oncoming headlights may cause more serious disability glare to drivers in the real world than the Stiles–Crawford formula predicts.