夜間走行を想定した低照度環境下における物体の認識率と認識時間の年代差

Abstract

To determine the differences in the visual characteristics between people in their twenties and those in their sixties under low-illuminance conditions, assuming night driving conditions, we measured the recognition ratios and recognition time of subjects by changing the presentation position, the size, the luminance, and the contrast of a Landolt. A Landolt is the circle which is cut off like alphabet “C”, and is used as the eye testing chart. By analyzing the data, we found that the recognition ratio of both age groups increased as the background luminance increased with a constant contrast, or as the contrast increased with a constant background luminance.