周辺視における閃光の快・不快限界輝度
1996 年 80 巻 2 号 p. 76-80
詳細
1996 年 80 巻 2 号 p. 76-80
We performed a visual experiment to determine the characteristics of discomfort glare caused by a flashing light in the periphery of the visual field. Subjects adjusted the luminance of a flashing light and a steady light to the borderline between comfort and discomfort (BCD) at various flashing frequencies and retinal eccentricities. The results show that the BCD decreases as the flash frequency increases between the frequencies of 0.25 and 4 Hz. In the periphery, the BCD of the flashing light at upper vertical positions is greater than that at lower vertical positions. The BCD is higher for the steady light than for the flashing light, regardless of the retinal eccentricity. The BCD of the flashing light can not be obtained from the effective value calculated using the Blondel and Rey equation.
