人眼对比敏感度函数测量方法研究

According to the definition of contrast and contrast sensitivity function, a method of producing test targets for human eye contrast sensitivity measurement is proposed with integrating spheres and special light modulators. Then an automated measurement system is built and human eye contrast sensitivity function can be measured by psychophysical experiment with cross ladder method. Its spatial frequency covers 0.8, 1.5, 2.0, 3.0, 4.5, 6.0, 12.0 and 18.0 cycles per degree. The indication error of background luminance of test targets satisfies ±5%, and contrast repeatability is 0.001 and reproducibility is 0.004, which meet requirements of human eye contrast sensitivity measurement.