The Research and Analysis of Factors Affecting Critical Flicker Frequency

The research is trying to find the influence factors of CFF (Critical Flicker Frequency) from these factors: light spot intensity strength, light spot color, eyesight, gender. By using the factor analysis method of multivariate statistical analysis, this paper analyses the ANOVA and the regression analysis with software SPSS. Results showed that: 1) light spot intensity strength did affect CFF value significantly; 2) color did affect CFF value highly significantly; 3) gender and eyesight did not affect CFF value significantly. Besides, interaction of multi-level factors based on color and light spot intensity strength did affect CFF value highly significantly. Finally, we verified the functional relationship between CFF and light intensity in accordance with laws of Ferry-Porter. Discussion our findings and research results according to real dates are not identical with existing research; we try to identify the reasons for differences.