Uncertainty of measurement for testing sensitivity of low light level image intensifier

It is essential to measure the sensitivity accurately, because sensitivity is an important index of low light level image intensifier for evaluating the photocathode's responsiveness. In this article, the economic testing equipment has been founded on the method required in the military standards, the way to select parameters of measurement have been shown, and the uncertainty of measurement for testing sensitivity has been analyzed. The expanded uncertainty, which is only below 4.6%, can completely satisfied to the requirement of high precision testing.