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描述了人眼屈光度仪的测量原理,设计了一套屈光度测量、采集处理、显示、打印系统.该系统是以一束红外脉冲光射入视网膜,由CCD接受视网膜反射的图像,将CCD图像进行数字化处理存入SRAM.CPU计算出人眼的屈光度值,并显示、打印出数据.该研究成果能准确测量人眼屈光度值.
A measuring system of diopter measurement, acquisition and processing, display and printing is designed, which is based on the measurement principle of human eye refraction meter.The system injects a bunch of infrared pulsed light into the retina, receives the retinal reflex image from the CCD, Digital processing stored in SRAM.CPU calculate the human eye’s diopter value, and display, print out the data.The results of this study can accurately measure the human eye refraction value.