【作者】 葛婧菁； 王肇圻； 刘涛；

【Author】 Ge Jingjing Wang Zhaoqi Liu Tao (Key Laboratory of Optoelectronic Information Science and Technology,Ministry of Education,Institute of Modern Optics,Nankai University,Tianjin,300071)

【机构】 南开大学现代光学研究所光电信息技术科学教育部重点实验室；

【摘要】 搭建了基于波前像差的视网膜空间调制度测定系统,利用Hartman-Shack波前像差传感器测量人眼波前像差,以及高空间频率的对比敏感度测量仪测量全视觉对比敏感度函数,进而得到人限的视网膜空间像调制度(Aerial Image Modulation,AIM)。和传统激光干涉方法测量视网膜空间像调制度相比较,本文的测定方法,不仅避免了激光干涉所产生的相干噪声和激光散斑不利因素,并且可以得到白光视网膜空间像调制度AIM和白光神经对比敏感度NCSF。对人眼绿光和白光视网膜AIM分别进行了测定,测试结果表明:在同等亮度下,绿光的神经对比敏感度远高于白光神经对比敏感度,说明视锥细胞的接收系统和眼视神经的传输系统对绿光要比对白光更敏感和更有效。更多还原

【Abstract】 We have constructed a system for measurement to obtain Aerial Image Modulation(AIM) according to the relationship between Modulation Transfer Function(MTF) calculated from wave-front date and Contrast Sensitivity Function(CSF) with a wide range of spatial frequencies.Comparing with previous measurement method,this technique not only avoids the coherent noise and speckle noise which are brought in by the interference of laser beams,but also can provide white-light AIM and white-light Neural Contrast Sensitivity Function(NCSF).The green-light and white-light AIM are acquired with this technique.It is shown that NCSF for green-light is higher than that for white-light under the condition of the same illumination.This indicates that green-light is more sensitive and effective than white-light in the reception system of cones and in the transmission system of visual nerve.更多还原