Wide angle holographic display system with spatiotemporal multiplexing

Abstract

This paper presents a wide angle holographic display system with extended viewing angle in both horizontal and vertical directions. The display is constructed from six spatial light modulators (SLM) arranged on a circle and an additional SLM used for spatiotemporal multiplexing and a viewing angle extension in two perpendicular directions. The additional SLM, that is synchronized with the SLMs on the circle is placed in the image space. This method increases effective space bandwidth product of display system data from 12.4 to 50 megapixels. The software solution based on three Nvidia graphic cards is developed and implemented in order to achieve fast and synchronized displaying. The experiments presented for both synthetic and real 3D data prove the possibility to view binocularly having good quality images reconstructed in full FoV of the display.

3D Capture and 3D Contents Generation for Holographic Imaging

“…Under coherent illumination, a circular arrangement of SLMs puts less severe requirements to the space-bandwidth product of the display and supports full-parallax binocular vision at an increased viewing angle. Different circular configurations have been recently proposed [24][25][26].…”

Spatiotemporal multiplexing method for visual field of view extension in holographic displays with naked eye observation

“…Also due to the size of physical frames of SLMs, it is difficult to obtain a continuous aperture of a dis− play. Another way to increase SBP is an implementation of temporal multiplexing [17][18][19] in which a number of SLMs, from which information originates, increases virtually. This is possible by modulating a direction of updated light field propagation with the frequency above eye refreshing rate (50 Hz preferably).…”

“…This is possible by modulating a direction of updated light field propagation with the frequency above eye refreshing rate (50 Hz preferably). In this way a continuous row or matrix of virtual SLMs is generated [17]. However, the more virtual SLMs appear, the higher refresh rate an SLM should work with.…”

“…17 combined with a sequence of an image demagnifying and magnifying operations performed by an appropriate 4f optical system. The paper is organized as follows.…”

Large scale calculation for holography using SSD

“…In electro-holography to reflect a three-dimensional (3-D) picture, we use spatial light modulators (SLMs) such as a high-definition LCD [1][2][3]. Recently, the number of pixels constructing an LCD increases.…”