Image Intensifier's Resolution Study

Image intensifier(I2) is the core device of the low-light level (LLL) night vision equipment. The resolution of 12 restricts the development of Night Vision technology. This paper is to improve the basic theory of the 12 resolution, obtain the method of improving the resolution and provide a theoretical basis for the development of the fourth-generation image intensifier.In this paper, we summarize the theoretical knowledges of the electrostatic field, equipotential line, E-trajectories and the resolution. First of all, we can obtain the mathematical expression of the potential of each grid point by the finite difference method. Then, subsitituting the values into the espression, we get the potential of each discrete point. Secondly, we can calculate the distribution of the equipotential lines by the tracking theory, and the E-trajectories by the method of Hechtel. Finally, we gain the placement distribution function at the screen of the E-trajectories and calculate the MTF by the placement distribution function. In this paper, we program using the MATLAB software, calculate the equipotential line, E-trajectories and the resolutions at the different parameters, final obtain the image intensifier with the high resolution.