The standard interpretation of Young’s double slit experiment is that the light behaves as waves before and after passing through the diaphragm of the double slit. There is one primary maximum intensity at the central position of the interference pattern. Recently, the photon chamber has been proposed and utilized to study the behavior of photons near the detecting screen. The experiments show that the light, near the screen, behaves as photons propagating along the straight-line trajectories that distribute as waves. Furthermore, the photon chamber placed near the double slit shows non-interference pattern.
In this article we show how the non-interference pattern evolving gradually to the interference pattern: (1) at 50 mm from the diaphragm of the double slit, the non-interference pattern shows and has two primary maximum intensities (Figure on left); (2) at 150 mm, there are two shape-changed maximum intensities (Figure at middle); (3) at 400 mm, the non-interference pattern evolves to the regular interference pattern (Figure on right). Those phenomena provide information for theoretical development.