Holographic near-eye display with continuously expanded eyebox using two-dimensional replication and angular spectrum wrapping

Choi, Myeong-Ho; Ju, Yeon-Gyeong; Park, Jae‐Hyeung

doi:10.1364/oe.381277

Cited by 45 publications

(21 citation statements)

References 12 publications

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“…Kim et al [2018] create several copies of the hologram and used a reflective display to control which copy is shown. Choi et al [2020] also create copies of the hologram but effectively control which copy is used computationally. While showing promise, these pupil steered methods require precise and low-latency eye tracking, have complex and difficult to miniaturize optics, and have lower performance than non-pupil steered holographic displays.…”

Section: Related Workmentioning

confidence: 99%

High resolution étendue expansion for holographic displays

Kuo

Waller

et al. 2020

ACM Trans. Graph.

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Holographic displays can create high quality 3D images while maintaining a small form factor suitable for head-mounted virtual and augmented reality systems. However, holographic displays have limited étendue based on the number of pixels in their spatial light modulators, creating a tradeoff between the eyebox size and the field-of-view. Scattering-based étendue expansion, in which coherent light is focused into an image after being scattered by a static mask, is a promising avenue to break this tradeoff. However, to date, this approach has been limited to very sparse content consisting of, for example, only tens of spots. In this work, we introduce new algorithms to scattering-based étendue expansion that support dense, photorealistic imagery at the native resolution of the spatial light modulator, offering up to a 20 dB improvement in peak signal to noise ratio over baseline methods. We propose spatial and frequency constraints to optimize performance for human perception, and performance is characterized both through simulation and a preliminary benchtop prototype. We further demonstrate the ability to generate content at multiple depths, and we provide a path for the miniaturization of our benchtop prototype into a sunglasses-like form factor.

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Section: Related Workmentioning

confidence: 99%

High resolution étendue expansion for holographic displays

Kuo

Waller

et al. 2020

ACM Trans. Graph.

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“…HOEs can, in principle, be structured into 2D or 3D lattices, and in the 2000s, HOEs were extended to 2D or 3D lattices with the rise of PDLC technology. [ 57–60 ] However, despite similarities in working principle and structural dimensions, their main applications, such as holographic data storage, [ 49,87–97 ] holographic lens, [ 64,66,69,74–79,82 ] and AR/VR technologies, [ 64–85,291–293 ] are different from those of PhCs (e.g., nanolasers, waveguides, colorimetric sensors, and display pixels). These aspects further prevented HOEs from being viewed as PhCs.…”

Section: Fourier Optics and Photonic Crystalsmentioning

confidence: 99%

“…This has led to the development of both holographic materials (e.g., intensity/polarization holographic materials such as diffractive [ 4–19 ] and holographic optical elements [ 20–60 ] (DOEs and HOEs)) and recording and reconstruction strategies (e.g., Gabor‐, [ 2,3 ] Denisyuk‐, [ 61 ] and Leith/Upatnieks [ 62,63 ] ‐type holograms). These research efforts had progressed and matured well from the 1960s to the 1990s, and many applications of Fourier optics such as augmented reality/virtual reality (AR/VR), [ 64–86 ] 3D optical data storage, [ 49,87–97 ] and Bragg diffractive visual sensors, [ 98–102 ] benefitted significantly from such impressive developments in holographic technologies.…”

Section: Introductionmentioning

confidence: 99%

Holography, Fourier Optics, and Beyond Photonic Crystals: Holographic Fabrications for Weyl Points, Bound States in the Continuum, and Exceptional Points

Lim

Park

Kang

et al. 2021

Advanced Photonics Research

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Since the 1990s, applications of holography and Fourier optics have been significantly expanded from the spatial modulation of light propagation to the nanofabrication of superlattices. Holographic mixing of multiple beams is found to be highly compatible with unprecedented engineering of 1D, 2D, and 3D superlattices, particularly at the nanoscales. This is essential for the development of champion photonic crystals working at optical frequencies. However, these extensive efforts toward holographic photonic crystals have declined with the failure to obtain a champion photonic crystal and the rapid rise of other important classes of optical modes in the 2010s such as Weyl points, bound state in continuum (BIC), and exceptional points (EPs). To obtain photonic crystals, the symmetric modulations of the sinusoidally distributed real part of permittivity (Re(ε)), that can be considered as waves of matter from the viewpoint of Fourier optics, are sufficient. However, Weyl points, BIC, and EPs demand more complicated and advanced modulation of such as asymmetrically distributed wave of Re(ε) and the coupled Re(ε) and imaginary ε (Im(ε)). It is, therefore, important to determine whether holographic fabrications can be an efficient solution to Weyl points, BIC, and EPs. In this review, a comprehensive overview of holography, Fourier optical surface/volume gratings, and their implementations for Weyl points, BIC, and EPs is presented.

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“…Spatial light modulators, such as liquid-crystal-on-silicon (LCoS) [1][2][3], have found widespread applications in adaptive optics [4][5][6][7], holographic near-eye display [8,9], laser beam steering [10][11][12][13], time-multiplexing 3D displays [14], and adaptive lens [15,16]. Unlike an amplitude modulator, a reflective LCoS usually requires 2π phase change, δ = 2(2πd∆n/λ), where the first factor 2 represents the double-pass due to reflective mode, d is the cell gap, ∆n is the LC birefringence, and λ is the wavelength.…”

Section: Introductionmentioning

confidence: 99%

Submillisecond-Response Polymer Network Liquid Crystal Phase Modulators

Yang

Chen

et al. 2020

Polymers

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A submillisecond-response and light scattering-free polymer-network liquid crystal (PNLC) for infrared spatial light modulators is demonstrated. Our new liquid crystal host exhibits a higher birefringence, comparable dielectric anisotropy, and slightly lower visco-elastic constant than a commonly employed commercial material, HTG-135200. Moreover, the electro-optical performance of our PNLCs with different monomer concentrations, cell gaps, and liquid crystal (LC) hosts is compared and discussed from four aspects: operating voltage, hysteresis, relaxation time, and light scattering loss. The temperature effect on hysteresis is also analyzed. Potential applications of PNLCs for laser beam steering and spatial light modulators especially in the infrared region are foreseeable.

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Holographic near-eye display with continuously expanded eyebox using two-dimensional replication and angular spectrum wrapping

Cited by 45 publications

References 12 publications

High resolution étendue expansion for holographic displays

High resolution étendue expansion for holographic displays

Holography, Fourier Optics, and Beyond Photonic Crystals: Holographic Fabrications for Weyl Points, Bound States in the Continuum, and Exceptional Points

Submillisecond-Response Polymer Network Liquid Crystal Phase Modulators

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