Abstract:

4F Fourier lens system is often used in holography. The transforming process of particle field in the system was examined in particle diffraction instead of geometric imaging in this paper. The imaging field of particles can be found in space of back lens. If recording plane is located among the image field, particle image and diffraction fringe from both side of the plane will be recorded. The resolution of the image and diffraction fringe is very high. However, the feature of double directional conjugate diffraction in the image field will confuse the real location of the particles in the process of reappearance.

Key words: Fourier transformation lens system, particle, holography