Super multi-view display based on pixelated nanogratings under an illumination of a point light source

Wan, Wenqiang; Qiao, Wen; Pu, Donglin; Chen, Linsen

doi:10.1016/j.optlaseng.2020.106258

Cited by 15 publications

(5 citation statements)

References 32 publications

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“…Figure 1 presents the principle of two or more viewpoints existing in the pupil to provide depth cues [ 32 , 33 , 34 ]. Figure 1 a,b show that the human eye focuses on the display panel and a point of the 3D image, respectively.…”

Section: Conventional Holographic Smv Maxwellian Display With Limited...mentioning

confidence: 99%

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A Depth-Enhanced Holographic Super Multi-View Display Based on Depth Segmentation

Wang,

Su,

Pang

et al. 2023

Micromachines

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A super multi-view (SMV) near-eye display (NED) effectively provides depth cues for three-dimensional (3D) display by projecting multiple viewpoint or parallax images onto the retina simultaneously. Previous SMV NED have suffered from a limited depth of field (DOF) due to a fixed image plane. In this paper, a holographic SMV Maxwellian display based on depth segmentation is proposed to enhance the DOF. The proposed approach involves capturing a set of parallax images and their corresponding depth maps. According to the depth maps, the parallax images are segmented into N sub-parallax images at different depth ranges. These sub-parallax images are then projected onto N image-recording planes (IRPs) of the corresponding depth for hologram computation. The wavefront at each IRP is calculated by multiplying the sub-parallax images with the corresponding spherical wave phases. Then, they are propagated to the hologram plane and added together to form a DOF-enhanced hologram. The simulation and experimental results are obtained to validate the effectiveness of the proposed method in extending the DOF of the holographic SMV displays, while accurately preserving occlusion.

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Section: Conventional Holographic Smv Maxwellian Display With Limited...mentioning

confidence: 99%

“…The narrower the light ray is, the larger the DOF will be. Conventional SMV is based on geometric optics; however, it has a limited DOF [ 32 , 33 , 34 ]. To increase the DOF, an effective method is to limit the width of the light beam entering the pupil.…”

Section: Introductionmentioning

confidence: 99%

A Depth-Enhanced Holographic Super Multi-View Display Based on Depth Segmentation

Wang,

Su,

Pang

et al. 2023

Micromachines

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“…Unlike multi-view displays that rely on so-called "sweet spots" [26], which are evenly distributed positions in front of the display from which the same perspective with limited variations can be perceived, light field displays utilize the entire field of view (FOV) and provide a smooth, continuous parallax within. Light field displays are also often addressed as super multi-view (SMV) displays in the scientific literature [27][28][29]. This terminology also extends to near-eye solutions [30][31][32], which, as the name suggests, use viewing devices near the eyes of the observer.…”

Section: Introductionmentioning

confidence: 99%

The Good News, the Bad News, and the Ugly Truth: A Review on the 3D Interaction of Light Field Displays

Kara

Simon

2023

MTI

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Light field displays offer glasses-free 3D visualization, which means that multiple individuals may observe the same content simultaneously from a virtually infinite number of perspectives without the need of viewing devices. The practical utilization of such visualization systems include various passive and active use cases. In the case of the latter, users often engage with the utilized system via human–computer interaction. Beyond conventional controls and interfaces, it is also possible to use advanced solutions such as motion tracking, which may seem seamless and highly convenient when paired with glasses-free 3D visualization. However, such solutions may not necessarily outperform conventional controls, and their true potentials may fundamentally depend on the use case in which they are deployed. In this paper, we provide a review on the 3D interaction of light field displays. Our work takes into consideration the different requirements posed by passive and active use cases, discusses the numerous challenges, limitations and potentials, and proposes research initiatives that could progress the investigated field of science.

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“…The enhanced viewing angle can be achieved by multiview 3D display [ 14 , 15 , 16 ]. The method of realizing multiview 3D display can be classified into geometric optics method and diffractive optics method.…”

Section: Introductionmentioning

confidence: 99%

High Resolution Multiview Holographic Display Based on the Holographic Optical Element

Qin

Sang²,

Li³

et al. 2023

Micromachines

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Limited by the low space-bandwidth product of the spatial light modulator (SLM), it is difficult to realize multiview holographic three-dimensional (3D) display. To conquer the problem, a method based on the holographic optical element (HOE), which is regarded as a controlled light element, is proposed in the study. The SLM is employed to upload the synthetic phase-only hologram generated by the angular spectrum diffraction theory. Digital grating is introduced in the generation process of the hologram to achieve the splicing of the reconstructions and adjust the position of the reconstructions. The HOE fabricated by the computer-generated hologram printing can redirect the reconstructed images of multiview into multiple viewing zones. Thus, the modulation function of the HOE should be well-designed to avoid crosstalk between perspectives. The experimental results show that the proposed system can achieve multiview holographic augmented reality (AR) 3D display without crosstalk. The resolution of each perspective is 4K, which is higher than that of the existing multiview 3D display system.

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Super multi-view display based on pixelated nanogratings under an illumination of a point light source

Cited by 15 publications

References 32 publications

A Depth-Enhanced Holographic Super Multi-View Display Based on Depth Segmentation

A Depth-Enhanced Holographic Super Multi-View Display Based on Depth Segmentation

The Good News, the Bad News, and the Ugly Truth: A Review on the 3D Interaction of Light Field Displays

High Resolution Multiview Holographic Display Based on the Holographic Optical Element

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