Near-eye display with a triple-channel waveguide for metaverse

Chen, Chao-Ping; Cui, Yuepeng; Chen, Ye; Meng, Sheng; Sun, Yang; Mao, Chaojie; Chu, Qiang

doi:10.1364/oe.470299

Cited by 38 publications

(12 citation statements)

References 18 publications

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“…In our experiments, a prototype with a diagonal FOV of 30° is demonstrated. Compared to other multi-layer waveguides [13][14][15][16], our solution could offer a more compact form factor, which is essential for wearable devices. Compared to the liquid crystal-based holographic materials [17][18][19][20][21], the acrylate has the advantages of high sensitivity, low haze, low cost, better durability, etc.…”

Section: Discussionmentioning

confidence: 99%

Chromatic near-eye display with double-layer holographic waveguide configuration

Shen,

Zhang,

Chen

et al. 2024

Advances in Display Technologies XIV

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A double-layer holographic waveguide, which is made from the acrylate photopolymers, is proposed for the see-through augmented reality. The most significant contribution is the integration of ocular lenses into the waveguides. The waveguide design, imaging principle, optical simulations, and fabrication methods are introduced. In our experiments, a prototype with a diagonal field of view of 30° is demonstrated. Compared to other multi-layer waveguides, our solution could offer a more compact form factor, which is essential for wearable devices.

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Section: Discussionmentioning

confidence: 99%

Chromatic near-eye display with double-layer holographic waveguide configuration

Shen,

Zhang,

Chen

et al. 2024

Advances in Display Technologies XIV

Self Cite

View full text Add to dashboard Cite

show abstract

“…Due to the dispersion of grating diffraction in both the in-coupling and out-coupling processes, both the deflection angle and coupling efficiency vary as a function of wavelength. Chromatic aberration is usually circumvented by employing multiple waveguide slabs, respectively, hosting a set of couplers for each specific color, 39 , 40 which inevitably increases the system size and compromises its compactness. The emerging metacouplers have shown a higher degree of design freedom and more powerful light-field modulation capability than conventional couplers, thus providing opportunities to address the above limitations.…”

Section: Metacouplersmentioning

confidence: 99%

“…However, the light-diffraction-induced chromatic dispersion limits their use for full-color displays. To mitigate such an issue, a stack of multiple waveguides is needed, 39 , 40 which inevitably increases the system volume.…”

Section: Introductionmentioning

confidence: 99%

Metasurface-enabled augmented reality display: a review

et al. 2023

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.Augmented reality (AR) display, which superimposes virtual images on ambient scene, can visually blend the physical world and the digital world and thus opens a new vista for human–machine interaction. AR display is considered as one of the next-generation display technologies and has been drawing huge attention from both academia and industry. Current AR display systems operate based on a combination of various refractive, reflective, and diffractive optical elements, such as lenses, prisms, mirrors, and gratings. Constrained by the underlying physical mechanisms, these conventional elements only provide limited light-field modulation capability and suffer from issues such as bulky volume and considerable dispersion, resulting in large size, severe chromatic aberration, and narrow field of view of the composed AR display system. Recent years have witnessed the emerging of a new type of optical elements—metasurfaces, which are planar arrays of subwavelength electromagnetic structures that feature an ultracompact footprint and flexible light-field modulation capability, and are widely believed to be an enabling tool for overcoming the limitations faced by current AR displays. Here, we aim to provide a comprehensive review on the recent development of metasurface-enabled AR display technology. We first familiarize readers with the fundamentals of AR display, covering its basic working principle, existing conventional-optics-based solutions, as well as the associated pros and cons. We then introduce the concept of optical metasurfaces, emphasizing typical operating mechanisms, and representative phase modulation methods. We elaborate on three kinds of metasurface devices, namely, metalenses, metacouplers, and metaholograms, which have empowered different forms of AR displays. Their physical principles, device designs, and the performance improvement of the associated AR displays are explained in details. In the end, we discuss the existing challenges of metasurface optics for AR display applications and provide our perspective on future research endeavors.

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“…4 For example, the high brightness provided by LED allows them to perform better in low-efficiency waveguide-type AR glasses. 5 Nevertheless, when the pixel size goes down to several micrometers, the low light extraction from the QDCC films becomes a major issue. 6 It is clear that the increase of QDCC film thickness is not viable for solving blue light leakage, which causes low light extraction, Figure 1(a).…”

Section: Introductionmentioning

confidence: 99%

P‐65: Strategic Realization of the Highest Possible Pixel Density for Quantum Dot Color Converter with Optimized Performance

Chen,

Kuo

et al. 2023

Symp Digest of Tech Papers

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The light extraction efficiency of QDCC (quantum dot color converter) is low when its aspect ratio (width to thickness ratio) of a subpixel is less than two, which causes the problem in their high‐resolution applications. Using QDPR (quantum dot photoresist) of high OD (optical density) values and PenTile subpixel arrangement, an apparent high‐resolution application is feasible, in which the QDCC film thickness is less than 2 μm. Further incorporation of yellow color filter film or color purified layer (CPL) on the QDCC film can optimize its optical performance. Theoretically, QDCC with pixel density over 3000 ppi is achievable when it is directly applied to the CMOS substrate. In a trial test QDCC is applied on a glass substrate, which results in pixel density of 2116 ppi and color gamut of NTSC 109.64%.

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Near-eye display with a triple-channel waveguide for metaverse

Cited by 38 publications

References 18 publications

Chromatic near-eye display with double-layer holographic waveguide configuration

Chromatic near-eye display with double-layer holographic waveguide configuration

Metasurface-enabled augmented reality display: a review

P‐65: Strategic Realization of the Highest Possible Pixel Density for Quantum Dot Color Converter with Optimized Performance

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