Abstract
With the rapid development of electronic, people live in the alternating Current’s Fluorescent and the television’s Fluorescent world during all the day, even accompanied by dazzling light art, so flashing light on the impact of the visual system have become increasingly prominent. Therefore determine the critical flicker frequency of human eye is necessary. The subject first learned about the structure of the human eye, In particular, two kinds of visual cells-- cone cells and rod-shaped cells in different roles, and consulted a number of books about LED drive circuit design requirements. Second, by analyzing the experimental requirements, we design a better LED driver circuit, which can via the signal source frequency to control the frequency of the LED flash. Thus It’s laid a hardware foundation of measured the critical flicker frequency of the human eye. Finally, with processed and counted the date tested sample, we can calculate the critical flicker frequency of the human eye.. We also discussed the conditions change whether has effect on the critical flicker frequency of the human eye, and learn more about our eye have the strong sensitivity under which condition.
Keywords: Structure of the human eye; LED driver; Critical frequency