根据10 bit的CRT显示器的显色特性及色度和亮度的稳定性特征,制作了大量的不同空间频率和对比度值的亮度光栅图片,通过CRT显示器显示.对站在0.Sm,1 m,2m,4m观测距离的8名观察者进行实验,结果表明,随着观察距离的增加,人眼敏感程度的趋势是先增加后减小.对不同空间频率的观察目标,人眼最佳观测距离各不相同,并且人眼在最佳观测距离处觉察时,不同的人眼敏感程度有较大差异.%According to the color characteristics of 10 bit CRT displays and the stability of color and brightness,a large number of brightness gratings with different spatial frequency and contrast values are manufactured. Eight observers standing at 0.5 cm,1 m,2 m,4 m distances are detected for the gratings displayed on the CRT display. Experimental results show that the trend of the human vision sensitivity is firstly increased and then decreased with the viewing distance increasing,and when observing the targets with the different spatial frequency, the optimal observing distance of the human eye is varied,and when human eye detecting at optimal observing distance,the sensitivity of the different human eye is quite different.
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