A simple portable polychromatic pupillometer for human eye annoyance measurement

The Standards EN 61000-4-15 which has been adopted by the IEEE as IEEE std 1453, gives functional and design specifications about the actual Flickermeter based on the analysis of the voltage supplying a specified light source. Such incandescent light source based instrument is obsolete nowadays, with the advent of new light sources, such as halogen, fluorescent, and especially solid state sources; a different and appropriate tools is mandatory to investigate the effects on the human eye of these sources. This paper describes an improved version of the instrument presented in our previous articles. Thanks to a microcontroller, the new system allows controlling all the characteristics of the flicker stimulus, i.e. amplitude, mean value, modulation, frequency and color. Moreover, the optical head has been revised in order to improve the alignment repeatability.