Abstract
We compare the resolution of the hologram reconstruction synthesis methods based on integral imaging using rectangular and hexagonal lens arrays. By using a hexagonal lens array instead of conventional rectangular lens array, the three-dimensional objects are sampled with hexagonal grids. Due to more efficient sampling of the hexagonal grid, the resolution of the reconstructed object is higher compared with the case of using rectangular lens array. We analyze the resolution enhancement of the hologram reconstruction quantitatively and verify it experimentally.
Highlights
Holography is an attractive autostereoscopic three-dimensional (3D) display technique
Digital hologram synthesis of 3D objects under incoherent illumination has been developed [1,2] the basic concept of incoherent illumination is quite old [3]
There are many researches for enhancing the resolution of reconstructed images in integral imaging or holograms generated based on integral imaging, such as time multiplexing method [4,5,6], synchronously moving micro-optics method [5,7], micro lens array scanning method [8], and lens array shift method [9,10]
Summary
Holography is an attractive autostereoscopic three-dimensional (3D) display technique. There are many researches for enhancing the resolution of reconstructed images in integral imaging or holograms generated based on integral imaging, such as time multiplexing method [4,5,6], synchronously moving micro-optics method [5,7], micro lens array scanning method [8], and lens array shift method [9,10]. We compare the resolution of the hologram reconstruction based on integral imaging with a rectangular lens array and a hexagonal lens array. To the authors’ best knowledge, this is the first report that provides the quantitative analysis and experimental verification on the resolution enhancement of the hologram synthesis using hexagonal lens array.
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