Optical scanning holography based on a binary phase pupil

In order to reduce the precision requirements of random-phase pupil, an optical scanning holography method using a binary random-phase pupil was proposed, which can be used to acquire the holographic information of a multi-section object. Series of theoretical analysis and numerical simulation were conducted. It is found that, similar as the optical scanning holography using a continuous random-phase pupil, the one using a binary phase pupil can also effectively eliminate the haze risen from the de-focus sections when the in-focus image is reconstructed. Furthermore, the reconstructed image quality has a close relationship with the degree of randomness on binary random-phase pupil, and an acceptable reconstructed image can still be obtained if randomness degree is not too low. This result is helpful for reducing the requirements of experimental conditions.