Large real-time holographic 3D displays: enabling components and results

Häussler, R.; Gritsai, Yuri; Zschau, Enrico; Missbach, R.; Sahm, Hagen; Stock, Markus; Stolle, Hagen

doi:10.1364/ao.56.000f45

Cited by 68 publications

(23 citation statements)

References 10 publications

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“…The value of complex coding would be minimal computation and near perfect reconstruction. The sub-systems required for complex coding are currently being researched in a number of laboratories [2,10]. It has been possible to achieve initial holographic display systems at the full resolution of the SLM by using limited modulation devices in particular phase-only electrically addressed devices [11] and amplitude-only optically addressed [9] devices.…”

Section: Spatial Light Modulators (Slms)mentioning

confidence: 99%

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Displays Based on Dynamic Phase-Only Holography

Christmas¹,

Collings²

2018

Applied Sciences

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Static holographic displays of high quality are works of art. We are creating commercial displays using dynamic phase-only spatial light modulators (SLMs). The main advantages of this approach are light efficiency and fault tolerance. When polarized lasers are used as the illumination source, there is no requirement for polarizers in the light engine. Moreover, the illumination beam can be directed towards bright points of the image and away from dark regions. Due to the many-to-one correspondence between the pixels in the SLM and the points in the image, faults in high complexity SLMs will be annealed in the image. Compared with normal displays where etendue is of overriding importance for light efficiency, holographic displays favor small pixel devices. Smaller pixel devices generate a larger reconstruction which improves the etendue for a second stage imaging system.

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Section: Spatial Light Modulators (Slms)mentioning

confidence: 99%

“…The current complexity of SLMs limits the size of the CGH. However, prototypes have been developed using SeeReal [2], Microsoft Research [3], Light Blue Optics [4], and the European Real3D project [5]. This work has focused on the reconstruction of 2D scenes and has grown from student work [6] to commercialization within 10 years.…”

Section: Introductionmentioning

confidence: 99%

Displays Based on Dynamic Phase-Only Holography

Christmas¹,

Collings²

2018

Applied Sciences

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“…To avoid the issue, head-mounted or near-eye holographic displays have been researched. 86,[90][91][92][93][94] A near-eye display does not require large SLMs; the SLMs only need to cover the field of view of a human eye. Since the view point is fixed in the near-eye display, a large viewing angle is not needed.…”

Section: Comparisonmentioning

confidence: 99%

Review of real-time reconstruction techniques for aerial-projection holographic displays

et al. 2018

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Electroholography enables the projection of three-dimensional (3-D) images using a spatial-light modulator. The extreme computational complexity and load involved in generating a hologram make realtime production of holograms difficult. Many methods have been proposed to overcome this challenge and realize real-time reconstruction of 3-D motion pictures. We review two real-time reconstruction techniques for aerial-projection holographic displays. The first reduces the computational load required for a hologram by using an image-type computer-generated hologram (CGH) because an image-type CGH is generated from a 3-D object that is located on or close to the hologram plane. The other technique parallelizes CGH calculation via a graphics processing unit by exploiting the independence of each pixel in the holographic plane. © The Authors.Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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“…Moreover, the ultra-high PPI (>4000 PPI) LCoS not only can develop 2D projection displays but also reconstruct 3D imaging by using diffractive optics. Phase-only SLM is particularly wanted for adaptive focus depth and holographic 3D displays for near-eye AR glasses, automotive HUDs, holotable/box, and focal surface VR HMDs [12][13][14][15]. In summary, an ideal SLM requires (1) full phase modulation (2π radians) for depth-focus display, (2) small pixel pitch (< 4 μm) for high diffraction angle, (3) high aperture for large FoV, and (4) fast response time for image blur reduction, image speckle suppression, and for additional FoV enlargement with temporal averaging/multiplexing techniques for a full color-sequential displays.…”

Section: Introductionmentioning

confidence: 99%

66‐3: Submillisecond‐Response 10‐Megapixel 4K2K LCoS for Microdisplay and Spatial Light Modulator

Yang

Chen

Huang

et al. 2019

Symp Digest of Tech Papers

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The NCTU PCU-3-02 10-megapixel 4K2K (max. 4160x2464) LCoS panels with LCM-1107 nematic LC were assembled and evaluated. The results of both 1.2-inch 4K2K (~4,000 PPI) amplitude type LCoS microdisplay and 0.7-inch 4K2K (~7,000 PPI) phase-only type LCoS spatial light modulator (SLM) can achieve 1~2 ms response time at T=45 o C. Meanwhile, the phase linearity, precision and accuracy of 4K2K LCoS-SLM were assessed in this work. These new LCoS schemes will potentially be utilized in color-sequential, holographic, virtual and augmented reality display.

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Large real-time holographic 3D displays: enabling components and results

Cited by 68 publications

References 10 publications

Displays Based on Dynamic Phase-Only Holography

Displays Based on Dynamic Phase-Only Holography

Review of real-time reconstruction techniques for aerial-projection holographic displays

66‐3: Submillisecond‐Response 10‐Megapixel 4K2K LCoS for Microdisplay and Spatial Light Modulator

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