Abstract
Abstract
Single spatial light modulator (SLM), full-frame-rate RGB displays require a complex off-axis architecture for the reference beams. A recent approach (Pi
et al
2022
Opt. Lett.
47
4379) provides a simpler on-axis solution, but its use of conventional zero-order imaging limits SLM bandwidth utilization to 17%. We overcome this inefficiency by introducing wide-angle multi order holographic near eye display (MoHNED), exploiting higher diffraction orders and multi-order imaging. The developed wavelength-dependent spatial-frequency allocation rule, based on a sine-diffraction constraint, co-aligns the angular components of the RGB channels while keeping them spectrally separated. This raises bandwidth utilization to 86% for single-high-order and 88% for multi-order operation. As a result, the field of view (FoV) expands from 2° × 33° to 12° × 33°, without increasing SLM resolution. To ensure symmetric reconstruction in the center of the FoV, we implement an analytically derived tilted-SLM configuration. Experimental validation of MoHNED confirms high-quality, full-color 3D imaging with a large depth of field, successfully driving 4K holographic video at a native 58 Hz refresh rate.