Semi-Lens Lens Array and Fast Fourier Transform to Generate Hologram for Live Electronic Holography

摘要

We are studying electronic holography and have already developed a real-time color holography system for livescene which includes three functional blocks, capture block, processing block, and display block. One of the issuesof such systems is to spoil half of the captured 3-D information due to half-zone-plate processing in processingblock, which means the resolution of reconstructed 3-D objects is reduced to half at the instant of processingblock. This issue belongs to not only our system but also all similar systems, because electronic display devicesdo not have enough resolution for hologram even now. In this paper, we propose to use semi-lens lens array(SLLA) in capture block to solve this issue, whose optical axis of elemental lens is not at the center of elementallens but at the edge of it. In addition to that, we will describe the processing block for SLLA. We show the basicexperimental results that SLLA is better than general lens array.